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aat3176 data sheet 500ma led flash driver 1 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 general description the aat3176 is a high output current, high efficiency, low noise, low profile charge pump converter ic, ideal for multi-function led photo-flash applications where solu- tion cost, size, and efficiency are critical. the charge pump is capable of delivering up to 500ma of output cur- rent and can be easily programmed in 16 steps with a single gpio output through skyworks' s 2 cwire? (simple serial control) interface. this allows smooth transitions and flexible adjustment of brightness in flash or other lighting modes. operating at a fast 1mhz switching fre- quency, the dual-mode (1x/2x) operation of the internal charge pump offers excellent power efficiency for both flash and movie modes and combined with a low external parts count (one 1 f flying capacitors and small bypass capacitors at vin and out), the aat3176 is ideally suited for small, battery-powered applications. the maximum current for both flash and movie mode is set by two independent external resistors. the mode pin is adopted to select the led current between movie (torch) and flash mode. the aat3176 has a thermal management system to pro- tect the device in the event of short-circuit, open-circuit, and over-temperature condition. built-in soft-start cir- cuitry prevents excessive in-rush current during start- up. the shutdown feature disconnects the load from v in and reduces quiescent current to less than 1.0 a. the aat3176 is available in the 2.2 x 2.2mm pb-free 10-pin tdfn package. features 2.7v to 5.5v supply voltage range up to 500ma output drive capability at 3.6v v in flexible brightness control ? 16 step output current by s 2 cwire separate external resistors to set maximum flash and movie-mode current dual mode 1x/2x charge pump < 1.0 a in shutdown small application circuit automatic soft-start limits inrush current open- and short-circuit protection thermal shutdown protection -40 to +85c temperature range 10-pin tdfn2.2x2.2 package applications digital still cameras (dsc) led photo flash/torch mobile handsets pdas and notebook pcs typical application aat3176 c1+ vout fl rsetf rsetm mode en/set gnd c1- vin 2.7v to 5.5v c in 4.7f c1 1f c out 2.2f en flash movie r f r m flash led downloaded from: http:///
aat3176 data sheet 500ma led flash driver 2 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 pin descriptions pin # symbol description 1 c1+ flying capacitor c1 positive terminal. connect a 1.0 f capacitor between c1+ and c1-. 2 vout charge-pump output. requires 2.2uf bypass capacitor to ground. 3 fl output current source. connect the ? ash led anode to this pin. 4 rsetf connect a resistor to gnd to set maximum flash output current. 5 rsetm connect a resistor to gnd to set maximum movie-mode output current. 6 mode selects between flash and movie mode: when mode is high, it is in flash mode with rsetf for maximum current. when mode is low, it is in movie mode with rsetm for maximum current . 7 en/set charge pump enable / set input control pin. when in the low state, the aat3176 is shut down, and consumes less than 1 a. when connected logic high level, the aat3176 is active. this pin must be connected. 8 gnd ground connection and ? ash led cathode. 9 c1- flying capacitor c1 negative terminal. 10 vin input power supply pin. requires 4.7 f bypass capacitor to ground. ep exposed pad. connect directly to ground beneath the package. pin configuration tdfn2.2x2.2-10 (top view) fl rsetm rsetf c1+ vout gndmode en/set vinc1- 3 4 5 1 2 8 7 6 10 8 downloaded from: http:///
aat3176 data sheet 500ma led flash driver 3 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 1. stresses above those listed in absolute maximum ratings may cause permanent damage to the device. functional operation at conditions other than the operating conditions specified is not implied. only one absolute maximum rating should be applied at any one time. 2. based on long-term current density limitation. 3. mounted on an fr4 board. 4. derate 71.4mw/c above 25c. absolute maximum ratings 1 t a = 25c unless otherwise noted. symbol description value units v in input voltage -0.3 to 6.0 v v en en to gnd voltage -0.3 to 6.0 v v en(max) maximum en to input voltage v in + 0.3 v i out maximum dc output current 2 150 ma maximum peak output current (lasting 1 second) 550 ma t j maximum junction operating temperature -40 to 150 c t s storage temperature range -65 to 150 t lead maximum soldering temperature (at leads, 10 sec) 300 thermal information 3 symbol description value units ? ja thermal resistance 4 71.4 c/w p d maximum power dissipation (t a = 25c) 1.4 w downloaded from: http:///
aat3176 data sheet 500ma led flash driver 4 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 1. the aat3176 is guaranteed to meet performance specifications over the -40c to +85c operating temperature range and is assu red by design, characterization, and correla- tion with statistical process controls. electrical characteristics 1 v in = 3.6v; c in = 4.7 f; c out = 2.2 f; c fly = 1 f; r setf = 21k ; r setm = 105k ; t a = -40c to 85c, unless otherwise noted. typical values are t a = 25c. symbol description conditions min typ max units power supply v in input voltage range 2.7 5.5 v v out (max) maximum output voltage 5.5 v i inq input operating current en/set = in, 1x mode, i f = 100ma 0.5 ma en/set = in, 2x mode, i f = 100ma 3.0 i shdn(max) vin pin shutdown current en = gnd 1.0 a i in_short input current at short circuit v f = 0v 25 ma i dm movie output current r setm = 105k 100 ma i df flash output current r setf = 21k , t a = 25c 450 500 550 ma r setf = 21k , v in = 3.0v 350 ma i out(max) maximum output current v f = 3.6v 500 ma i led /i set led current ratio 8652 f clk charge pump clock frequency in 2x mode 0.5 1 1.5 mhz t ss soft-start time 100 s en/set, mode v rset r setf and r setm pin voltage 1.22 v v en/mode(l) en/mode threshold low 0.4 v v en/mode(h) en/mode threshold high 1.4 v i leak en/set, mode input leakage -1 1 a s 2 c control t en/set lo en/set low time 0.3 75 s t en/set hi(min) minimum en/set high time 50 ns t en/set hi(max) maximum en/set high time 75 s t off en/set off timeout 500 s t lat en/set latch timeout 500 s thermal protection t sd thermal shutdown threshold 140 o c t hys thermal shutdown hysteresis 15 downloaded from: http:///
aat3176 data sheet 500ma led flash driver 5 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 typical characteristics quiescent current vs. input voltage (v f = 3.6v; r set = 105k ) input voltage (v) quiescent current (ma) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 -40c25c 85c 0c shutdown current vs. input voltage (v f = 3.6v; en = 0v ) input voltage (v) shutdown current (a) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 -40c0c 25c 85c efficiency vs. input voltage (r set = 105k; i f = 100ma ) input voltage (v) efficiency (%) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 30% 40% 50% 60% 70% 80% 90% 100% v f = 2.7v v f = 3.0v v f = 3.3v v f = 3.6v efficiency vs. input voltage (r setf = 52.3k; i f = 200ma ) input voltage (v) efficiency (%) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 30% 40% 50% 60% 70% 80% 90% 100% v f = 2.7v v f = 3.0v v f = 3.3v v f = 3.6v efficiency vs. input voltage (r setf = 35.7k; i f = 300ma ) input voltage (v) efficiency (%) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 30% 40% 50% 60% 70% 80% 90% 100% v f = 2.7v v f = 3.0v v f = 3.3v v f = 3.6v efficiency vs. input voltage (r setf = 21k; i f = 500ma ) input voltage (v) efficiency (%) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 30% 40% 50% 60% 70% 80% 90% 100% v f = 2.7v v f = 3.0v v f = 3.3v v f = 3.6v downloaded from: http:///
aat3176 data sheet 500ma led flash driver 6 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 typical characteristics led current vs. input voltage (r set = 105k; i f = 100ma ) input voltage (v) i f (ma) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 80 85 90 95 100 105 110 115 120 v f = 2.7v v f = 3.0v v f = 3.3v v f = 3.6v led current vs. input voltage (r set = 52.3k; i f = 200ma ) input voltage (v) i f (ma) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 80 85 90 95 100 105 110 115 120 v f = 2.7v v f = 3.0v v f = 3.3v v f = 3.6v led current vs. input voltage (r set = 35.7k; i f = 300ma ) input voltage (v) i f (ma) 2.7 3.2 3.7 4.2 4.7 5.2 100 150 200 250 300 350 400 v f = 2.7v v f = 3.0v v f = 3.3v v f = 3.6v led current vs. input voltage (r set = 21k; i f = 500ma ) input voltage (v) i f (ma) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 200 250 300 350 400 450 500 550 600 v f = 2.7v v f = 3.0v v f = 3.3v v f = 3.6v maximum output current vs. input voltage (r setm = 105k; v f = 3.6v ) input voltage (v) i f_max (ma) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 60 70 80 90 100 110 120 130 140 -40c25c 85c maximum output current vs. input voltage (r setf = 21k; v f = 3.6v ) input voltage (v) i f_max (ma) 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 300 350 400 450 500 550 -40c25c 85c downloaded from: http:///
aat3176 data sheet 500ma led flash driver 7 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 typical characteristics en/mode threshold high vs. temperature temperature (c) v ih (v) -40 -15 10 35 60 85 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 v in = 2.7v v in = 3.6v v in = 4.2v en/mode threshold low vs. temperature temperature (c) v il (v) -40 -15 10 35 60 85 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 v in = 2.7v v in = 3.6v v in = 4.2v led current vs. r set r set (k) led current (ma ) 0 50 100 150 200 0 100 200 300 400 500 600 r setf r setm en leakage current vs. input voltage (v f = 3.6v; v en = 5.5v; r set = 21k ) input voltage (v) en leakage current (a) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 -40c0c 25c 85c oscillator frequency vs. input voltage input voltage (v) frequency (mhz) 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 0.90 0.95 1.00 1.05 1.10 -40c0c 25c 85c downloaded from: http:///
aat3176 data sheet 500ma led flash driver 8 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 typical characteristics led current 7.5ma to 100ma transient (v in = 5.0v; v f = 3.6v; r set = 105k) time (40s/div) v en (2v/div) i f (50ma/div) 100ma led current 100ma to 7.5ma transient (v in = 5.0v; v f = 3.6v; r set = 105k) time (40s/div) v en (2v/div) i f (50ma/div) 100ma led current 40ma to 500ma transient (v in = 5.0v; v f = 3.6v; r set = 21k) time (40s/div) v en (2v/div) i f (200ma/div) 500ma led current 500ma to 40ma transient (v in = 5.0v; v f = 3.6v; r set = 21k) time (40s/div) v en (2v/div) i f (200ma/div) 500ma downloaded from: http:///
aat3176 data sheet 500ma led flash driver 9 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 functional block diagram charge pump c+ c- out fl en / set vin system control; s 2 cwire; timing gnd r setf r setm mode soft start control 1mhz oscillator functional description the aat3176 is a high efficiency, low noise, 1x/2x regu- lating charge pump device is intended for photo flash led applications. the aat3176 requires only 3 external components: one 1.0 f ceramic capacitor for the charge pump flying capacitor, one 4.7 f ceramic capacitor for c in , and one 2.2 f to 4.7 f ceramic capacitor for c out filtering. the charge pump is designed to deliver up to 500ma load current at v in = 3.6v. the dual mode charge pump section contains soft start circuitry to prohibit an exces- sive in rush current during start up. system efficiency is maximized with a 1x/2x mode, dual mode charge-pump topology. the internal clock oscillator frequency of 1mhz allows the use of small external components. depending upon the variation of load current (at differ- ent modes), input voltage, and led forward voltage, the charge pump will operate in 1x or 2x mode to generate the output voltage required to power the load for the required current. this results in significant power sav- ings over pure voltage doubling architectures, especially when the leds are operated at lower current levels in movie, viewing, or flash modes. the aat3176 also includes open- and short-circuit pro- tection to deal with fault situations. when the flash led is not connected (an open fault occurs), the v out will be limited to 6v; when a flash led short fault occurs, the total input current is limited to typical 25ma. downloaded from: http:///
aat3176 data sheet 500ma led flash driver 10 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 1. the flash led accuracy is compromised at high data settings. s 2 cwire serial interface the aat3176 utilizes skyworks single-wire s 2 cwire interface to enable/disable the charge pump and adjust the output current level to one of sixteen different cur- rent levels. each data defines the output current as a percentage of the maximum current set by the resistor at the r set pin, as detailed in table 1. the s 2 cwire interface records rising edges of the en/set pin and decodes them into 16 individual current level settings, with data 1 reserved for maximum current. once en/set has been held in the logic high state for time t lat , the programmed current is set at the current source outputs. for subsequent current level program- ming, the number of rising edges corresponding to the desired data must be entered on the en/set pin. figure 1 shows the s 2 cwire tm interface timing. when en/set is held low for an amount of time greater than t off , the aat3176 enters shutdown mode and draws less than 1 a from vin. data and address registers are reset to 0 during shutdown. data output current (% of i max ) 1 100.0% 2 89.1% 3 79.4% 4 70.8% 5 63.1% 6 56.2% 7 50.1% 8 44.7% 9 39.8% 10 35.5% 11 31.6% 12 28.2% 13 25.1% 14 22.4% 15 20.0% 16 7.5% table 1: output current at different s 2 cwire data. 1 s 2 cwire serial interface timing 1 en/set 2 n-1 n 16 data reg 0n 0 t hi t lo t lat t off figure 1: s 2 cwire interface timing. downloaded from: http:///
aat3176 data sheet 500ma led flash driver 11 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 application informationflash and movie mode led current setting the aat3176 has two independent led current setting pins for led current in flash and movie mode: r setf and r setm . the mode pin is designed to select which current set flows through the led. when mode is high, the cur- rent set by r setf is the maximum led current; when mode is low, the maximum current is set by r setm . the calculation method of the led current set resistor value r set is the same for either mode and can be calculated using the following formula: r setf = r setm = 8652 1.22 i led table 2 shows some examples of 1% standard metal film resistor values for different maximum led currents (data = 1) in movie and flash mode. r setm (k ) maximum led current (ma) r setf (k ) maximum led current (ma) 210.0 50 105.0 100 174.0 60 69.8 150 150.0 70 52.3 200 130.0 80 42.2 250 118.0 90 35.7 300 105.0 100 30.1 350 26.1 400 23.7 450 21.0 500 table 2: maximum led current r setm and r setf example. led current can be set to levels lower than maximum via s 2 c data transferred through the en/set pin, corre- sponding to percentage of the maximum setting value. in movie mode, continuous high level of en/set lights the led light continuously at the programmed current. in flash mode, en/set high level duration controls flash time; the maximum flash time is 1 second for 500ma led current limited by the thermal characteristics of the package. figure 2 shows the operating waveform of the aat3176 driving an led for 500ms flash time in flash mode with 500ma led current at 3.6v v in (2x mode). time (100ms/div) v c1 (5v/div) i in (1a/div) i led (1a/div) v in (5v/div) v f (2v/div) v rsetf (2v/div) figure 2: aat3176 operating waveform at 500ma led current with 500ms flash time (r setf = 21k ). thermal considerations the aat3176 is designed to deliver continuous led cur- rent in movie mode. the limiting characteristic for max- imum safe operating output led current is package power dis sipation. in order to obtain high operating cur- rents, careful device layout and circuit operating condi- tions must be taken into account. the following discus- sions assume that the aat3176 is mounted on a printed cir cuit board utilizing the minimum recommended foot- print as stated in the printed circuit board layout recommendations section of this datasheet. at any given ambient temperature (t a ), the maximum package power dissipation can be determined by the fol-lowing equation: (t j(max) - t a ) p d(max) = ja the aat3176 is available in the tdfn2.2x2.2-10 pack- age, which has 71.4c/w of thermal resistance ( ja ). with 125c t j(max) , its p d(max) is 1.4w. the maximum power dissipation occurs when the mode transfers from 1x to 2x. if the die temperature rises above the thermal limit of 140c, the internal thermal protection circuit activates to shut down the charge pump and recovers when the die temperature drops below 125c. to avoid entering thermal protection in flash mode at the 500ma high flash led current setting, the flash time should not exceed 1 second at 25c ambient tempera- ture. longer flash time causes the junction temperature to increase quickly, causing thermal shutdown. the led current recovers automatically when the junction tem- perature decreases. downloaded from: http:///
aat3176 data sheet 500ma led flash driver 12 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 in movie mode, maximum continuous current value is not limited by the package thermal resistance but by the integrated metal current density. the maximum value should not exceed 150ma. charge pump efficiency the power conversion efficiency of the aat3176 depends on the charge pump mode. by definition, device effi- ciency is expressed as the output power delivered to the led divided by the total input power consumed. = p ou t p in when the input voltage is sufficiently greater than the led forward voltage, the device optimizes efficiency by operating in 1x mode. in 1x mode, the device is working as a bypass switch and passing the input supply directly to the output. due to the very low 1x mode quiescent current, the input current nearly equals the current delivered to the led. further, the low-impedance bypass switch introduces negligible voltage drop from input to output. the power conversion efficiency can be approxi- mated by: = v f i led v in i in v f v in the aat3176 maintains optimized performance and effi- ciency by detecting. when the input voltage is not suf- ficient to sustain led current, the device automatically switches to 2x mode. for ideal conversion, the 2x mode efficiency is given by: = = v f i led v in i in v f 2 v in v f i led v in 2 i led led selection a good led lighting application circuit not only deter- mined by the led driver but also the led selected. a higher luminous efficacy led emits a higher amount of luminous flux (lumens) for a given power. most led manufacturers' datasheets provide the luminous efficacy by the luminous flux curve (led forward current vs lumi- nous flux). from the luminous flux curve, increasing the led forward current may increase the led light; increased led forward current also increases led for- ward voltage with higher rating. the aat3176 is designed to drive high-intensity white leds. it is particularly suitable for leds with an operat- ing forward voltage v f in the range of 4.2v to 1.5v. low forward voltage (v f ) flash led may make the 1x/2x mode automatically transfer voltage point lower and get higher efficiency at the mode transfer input voltage. capacitor selection careful selection of the three external capacitors c in , c 1 , and c out is important because they will affect turn-on time, output ripple and transient performance. optimum performance is obtained when low esr ceramic capaci- tors are used; in general, low esr may be defined as less than 100m . a capacitor value of 1 f for all three capacitors is a good starting point when choosing capac- itors; a 2.2 f to 4.7 f value is suitable for input and output capacitance. ceramic composition capacitors are highly recommend- ed over all other types of capacitors for use with the aat3176. ceramic capacitors offer many advantages over their tantalum and aluminum electrolytic counter- parts. a ceramic capacitor typically has very low esr, is lowest cost, has a smaller pcb footprint and is non- polarized. low esr ceramic capacitors help to maximize charge pump transient response. since ceramic capaci- tors are non-polarized, they are not prone to incorrect connection damage. equivalent series resistance (esr) esr is an important characteristic to consider when selecting a capacitor. esr is resistance internal to a capacitor, which is caused by the leads, internal connec- tions, size or area, material composition, and ambient temperature. capacitor esr is typically measured in mil- liohms for ceramic capacitors and can range to more than several ohms for tantalum or aluminum electrolytic capacitors. printed circuit board layout recommendations when designing a pcb for the aat3176, the key require- ments are: 1. place the flying capacitor c p as close to the chip as possible; otherwise 2x mode performance will be compromised. 2. place input and output decoupling capacitors as close to the chip as possible to reduce switching noise and output ripple. 3. connect the exposed pad to the gnd plane to achieve the best power dissipation. downloaded from: http:///
aat3176 data sheet 500ma led flash driver 13 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 schematic and layout 0.1u f c1 jp1 en/set s 2 c down up cycle j1 vdd 1 gp5 2 gp4 3 gp3 4 gp2 5 gp1 6 gp0 7 vss 8 u2 pic12f675 led1 green led2 red c out 2.2f c p 1f c in 4.7f r setf 21k r setm 105k d1 aat3176 c1+ 1 vout 2 fl ep 3 rsetf 4 rsetm 5 mode r7 0 r6 20k r4 1k r5 1k r1 1k r2 1k r3 1k 6 en/set 7 gnd 8 c1- 9 vin 10 0 u1 mode mode mode vin dc+ dc- s 2 cwire microcontroller aat3176 white led drive r figure 3: aat3176 evaluation board schematic. figure 4: aat3176 evaluation board figure 5: aat3176 evaluation board layout top layer. layout bottom layer. downloaded from: http:///
aat3176 data sheet 500ma led flash driver 14 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 component part number description manufacturer u1 aat3176idh 500ma led flash driver with flash and movie mode skyworks u2 pic12f675 8-pin flash-based 8-bit cmos microcontrollers microchip c1 grm188r71c104k cap ceramic 0.1 f 0603 x7r 16v 10% murata cin grm188r60j475k cap ceramic 4.7 f 0603 x5r 6.3v 10% cout grm188r61a225k cap ceramic 2.2 f 0603 x5r 10v 10% cp grm188r71c105k cap ceramic 1 f 0603 x7r 16v 10% cycle, up, down 6*6*5 12v 50ma pushbutton e-lt d1 fcw401z4 max 300ma forward current, max 1500ma/300ms peak forward current seoul led1 0805kgct green led 0805 hb led2 0805krct red led 0805 r1 - r5 rc0603fr-071kl res 1k 1/10w 1% 0603 smd yageo r6 rc0603fr-0720kl res 20k 1/10w 1% 0603 smd r7 rc0603fr-070rl res 0 1/10w 1% 0603 smd rsetf rc0603fr-0721kl res 21k 1/10w 1% 0603 smd rsetm rc0603fr-07105kl res 105k 1/10w 1% 0603 smd table 3: aat3176 evaluation board bill of materials (bom). downloaded from: http:///
aat3176 data sheet 500ma led flash driver 15 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 202102a skyworks proprietary information products and product information are subject to change without notice. june 25, 2012 copyright ? 2012 skyworks solutions, inc. all rights reserved. information in this document is provided in connection with skyworks solutions, inc. (skyworks) products or services. these materials, including the information contained herein, are provided by sky works as a service to its customers and may be used for informational purposes only by the customer. skyworks assumes no responsibility fo r errors or omissions in these materials or the information contained herein. sky- works may change its documentation, products, services, speci ? cations or product descriptions at any time, without notice. skyworks makes no commitment to update the materials or information and shall have no responsibility whatsoever for con ? icts, incompatibilities, or other dif ? culties arising from any future changes. no license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. skyworks assumes no liability for any materials, products or informatio n provided here- under, including the sale, distribution, reproduction or use of skyworks products, information or materials, except as may be provided in skyworks terms and conditions of sale. the materials, products and information are provided as is without warranty of any kind, whether express, implied, statutory, or otherwise, including fitness for a particular purpose or use, merchantability, performance, quality or non-infringement of any intellectual property right; all such warranti es are hereby expressly disclaimed. skyworks does not warrant the accuracy or completeness of the information, text, graphics or other items contained within these materials. skyworks shall not be liable for any damages, in- cluding but not limited to any special, indirect, incidental, statutory, or consequential damages, including without limitation, lost revenues or lost profits that may result from the use of the materials or information, whether or not the recipient of materials has been advised of the possibility of such damage. skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the skyworks products could lead to personal injury, death, physical or en- vironmental damage. skyworks customers using or selling skyworks products for use in such applications do so at their own risk and agree to fully indemnify skyworks for any damages resulting from such improper use or sale. customers are responsible for their products and applications using skyworks products, which may deviate from published speci ? cations as a result of design defects, errors, or operation of products outside of pub- lished parameters or design speci ? cations. customers should include design and operating safeguards to minimize these and other risks. skyworks assumes no liabi lity for applications assistance, customer product design, or damage to any equipment resulting from the use of skyworks products outside of stated published speci ? cations or parameters. skyworks, the skyworks symbol, and breakthrough simplicity are trademarks or registered trademarks of skyworks solutions, inc., in the united states and other countries. third-party brands and names are for identi ? cation purposes only, and are the property of their respective owners. additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference. 1. xyy = assembly and date code. 2. sample stock is generally held on part numbers listed in bold . 3. the leadless package family, which includes qfn, tqfn, dfn, tdfn and stdfn, has exposed copper (unplated) at the end of the lead terminals due to the manufacturing process. a solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder c onnection. ordering information package part marking 1 part number (tape and reel) 2 tdfn2.2x2.2-10 8hxxy AAT3176IDH-T1 skyworks green? products are compliant with all applicable legislation and are halogen-free. for additional information, refer to skyworks de?ition of green , document number sq04-0074. package information tdfn2.2x2.2-10 2.200 0.050 2.200 0.050 index area 1.700 0.050 0.900 0.050 detail "a" 0.500 0.050 0.750 0.050 0.203 ref top view bottom view side view pin 1 indicator (optional) 0.400 bsc 0.180 0.050 0.400 0.050 detail "a" all dimensions in millimeters. downloaded from: http:///

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