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ts33000 final datasheet rev 1.9 may 1, 2015 1 of 17 semtech ts33000 triune products high efciency synchronous dc/dc buck converter features ? fixed output option has automatic low power pfm mode for reduced quiescent current at light loads ? 2.25mhz +/- 10% fxed switching frequency ? fixed output voltages: 0.8v, 0.9v, 1.2v, 1.5v, 1.8v, ? 2.5v, and 3.3v with +/- 2% output tolerance ? input voltage range: 2.0v to 5.5v ? voltage mode pwm control with input voltage feed- ? forward compensation ? voltage supervisor for vout reported at the pg pin ? input supply under voltage lockout ? soft start for controlled startup with no overshoot ? full protection for over-current, over-temperature, ? and vout overvoltage ? less than 100na in shutdown mode ? multiple enable pins for fexible system sequencing ? low external component count ? junction operating temperature -40c to 125c ? packaged in a 16 pin qfn (3x3) applications ? point of load ? systems with deep submicron asics/fpgas ? set-top box ? communications equipment ? portable and handheld equipment description the ts33000 is a dc/dc synchronous switching regulator with fully integrated power switches, internal compensation, and full fault protection. the switching frequency of 2.25mhz enables the use of extremely small flter components, resulting in smaller board space and reduced bom costs. when the input current is greater than approximately 50ma, the ts33000 utilizes pwm voltage mode feedback with input voltage feed-forward to provide a wide input voltage range without the need for external compensation. for the fixed output option, when the input current is less than 50ma, the device uses a pfm mode to provide increased efciency at light loads. the cross over between pfm mode and pwm is automatic and has hysteresis to prevent oscillation between the modes. additionally, the nlp mode pin can be used to force the device into pwm mode to reduce the output ripple, if needed (fixed output only). the ts33000 integrates a wide range of protection circuitry; including input supply under-voltage lockout, output under- voltage, output over-voltage, soft start, high side fet and low side fet current limits, and thermal shutdown. typical applications ts33000 vout 4.7uf 1.5uh fixed output en pgnd vsw vcc fb gnd vout sense 2x4.7uf vc c en pg pg 10 kohm (optional) vcc or vout nlp nlp www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 2 of 17 semtech pinout pin description pin # pin name pin function description 1 vsw switching voltage node connect to 1.5uh inductor. short to pins 12, 14, & 15 2 vcc input voltage input voltage supply. short to pins 3 & 11 3 vcc input voltage input voltage supply. short to pins 2 & 11 4 gnd gnd ground for the internal circuitry of the device 5 fb feedback input feedback voltage for the regulator when used in adjustable mode. connect to the output voltage resistor divider for adjustable mode and no connection for fxed output modes 6 v out sense output voltage sense output voltage sense. requires kelvin connection to 4.7uf output capacitor 7 nlp nlp input forcing this pin high prevents the device from going into low power pfm mode operation 8 pg pg output power good indicator open-drain output. 9 en enable input input high voltage enables the device. input low disables the device. 10 test out test mode output connect to gnd. for internal testing use only. 11 vcc input voltage input voltage supply. short to pins 2 & 3 12 vsw switching voltage node connect to 1.5uh inductor. short to pins 1, 14, & 15 13 pgnd power gnd gnd supply for internal low-side fet/integrated diode. short to pin 16 14 vsw switching voltage node connect to 1.5uh inductor. short to pins 1, 12, & 15 15 vsw switching voltage node connect to 1.5uh inductor. short to pins 1, 12, & 14 16 pgnd power gnd gnd supply for internal low-side fet/integrated diode. short to pin 13 ts33000 vcc vcc gnd vsw vcc test out en vsw vsw vsw pgnd pgnd nlp vout sens e fb pg www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 3 of 17 semtech functional block diagram figure 1: ts33000 block diagram for fxed and adjustable mode devices over curren t protection gate drive gate drive gate drive control vout sense vref & softstart oscillator ramp generator comparator error amp gnd under voltag e protection monitor & control thermal protection vcc vsw en pgnd nlp 4.7uf 1.5uh r top (adjustable) compensation networ k pg vcc fb (adjustable) vout r bot (adjustable) (adjustable) www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 4 of 17 semtech absolute maximum ratings over operating freeCair temperature range unless otherwise noted (1, 2) parameter value unit vcc -0.3 to 6.0 v vsw -1 to 6.0 v en, pg,fb, nlp, test out, v out sense -0.3 to 6 v electrostatic discharge C human body model 2k v electrostatic discharge C charge device model 500 v lead temperature (soldering, 10 seconds) 260 c notes: (1) stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating con - ditions is not implied. exposure to absoluteCmaximumCrated conditions for extended periods may affect device reliability. (2) all voltage values are with respect to network ground terminal. thermal characteristics symbol parameter value unit ja thermal resistance junction to air (note 1) 50 c/w note 1: assumes qfn16 1 in 2 area of 2 oz copper and 25c ambient temperature. recommended operating conditions symbol parameter min typ max unit vcc input operating voltage 2.0 3.3 5.5 v t stg storage temperature range -65 150 c t j max maximum junction temperature 150 c t j operating junction temperature range -40 125 c l out output filter inductor typical value (note 1,3) 1.2 1.5 1.8 uh c out output filter capacitor typical value (note 2,3) 3.76 4.7 5.64 uf c out-esr output filter capacitor esr 0 5 20 m c bypass input supply bypass capacitor typical value (note 2) 2x4.7 uf note 1: for best performance, an inductor with a saturation current rating higher than the maximum v out load requirement plus the inductor current ripple. see the inductor current ripple calculations in inductor calculations sections. note 2: for best performance, a low esr ceramic capacitor should be used C x7r or x5r types should be used. y5v should be avoided. note 3: min and max listed are to account for +/-20% variation of the typical value. typical values of 4.7uf and 1.5uh are recommended. www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 5 of 17 semtech characteristics electrical characteristics, t j = -40c to 125c, vcc = 12v (unless otherwise noted) symbol parameter condition min typ max unit vcc supply voltage vcc input supply voltage 2.0 5.5 v i cc-norm quiescent current normal mode vcc = 3.3v, i load = 0a, v en =3.3v, nlp=3.3v 12 ma i cc-lpm quiescent current low power pfm mode vcc = 3.3v, i load = 0a, v en =3.3v, nlp=0v 45 ma i cc-shutdown quiescent current shutdown mod vcc = 3.3v, en=0v 0.1 ua vcc under voltage lockout vcc -uv input supply under voltage threshold vcc increasing 1.9 2.0 v vcc -uv_hyst input supply under voltage threshold hysteresis 100 mv osc f osc oscillator frequency 2.0 2.25 2.5 mhz pg open drain output t pg pg release timer 10 ms i oh-pg high-level output leakage v pg =5v vcc=5v 0.1 ua v ol-pg low-level output voltage i pg = -0.3ma 0.01 v en/nlp input voltage thresholds v ih-en/nlp high level input voltage vcc=2v to 5v 1.0 v v il-en/nlp low level input voltage vcc=2v to 5v 0.4 v v hyst-en/nlp input hysteresis vcc=2v to 5v 100 mv i in-en en input leakage v en =5v vcc=5v 0.1 ua v en =0v vcc=5v 0.1 ua nlp pd nlp pulldown resistor pulldown to gnd 100 k thermal shutdown tsd thermal shutdown junction temperature 150 170 190 c tsd hyst tsd hysteresis 10 c www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 6 of 17 semtech regulator characteristics electrical characteristics, t j = -40c to 125c, vcc = 12v (unless otherwise noted) symbol parameter condition min typ max unit switch mode regulator: l=1.5uh and c=4.7uf v out-pwm output voltage tolerance in mode v out C 2% v out v out + 2% v r dson high side switch on resistance i vsw = -300ma 110 m low side switch on resistance i vsw = 300ma 75 m i out output current 600 ma i ocdhs over current detect hs 900 ma i ocdls over current detect ls 900 ma v out-line output line regulation vcc = 2.5v to 5v, v out = 1.8v, i load = 300ma -10 10 mv v out-load output load regulation i load = 10ma to 300ma, vcc = 5v, v out = 1.8v v out - 0.5% v out v out + 0.5% v fb th feedback reference fb switch point 0.6 v fb th-tol feedback reference tolerance -1.5 1.5 % i fb feedback input current 100na na t ss softstart ramp time 500 us v out-pg vout power good threshold 85% v out v out-pg_hyst vout power good hysteresis 2% v out v out-ov vout over voltage threshold 106% v out v out-ov_hyst vout over voltage hysteresis 2% v out www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 7 of 17 semtech functional description this voltage-mode point of load (pol) synchronous step- down power supply product can be used in the consumer, industrial, and automotive market segments. it includes fexibility to be used for a wide range of output voltages and is optimized for high efciency power conversion with low rdson integrated synchronous switches. a 2.25mhz internal switching frequency facilitates low cost lc flter combinations and improved transient response. additionally, the fxed output version, with integrated power on reset and fault circuitry enables a minimal external component count to provide a complete power supply solution for a variety of applications. detailed pin description unregulated input, vcc this terminal is the unregulated input voltage source for the ic. it is recommended that 2 4.7uf bypass capacitors be placed close as possible to the vcc pins for best performance. since this is the main supply for the ic, good layout practices need to be followed for this connection. feedback, fb this is the voltage feedback input terminal for the adjustable version. for the fxed mode versions, this pin should be left foating and not connected. the connection on the pcb should be kept as short as possible from the feedback resistors, kept away from the vsw connections or other switching/high frequency nodes, and should not be shared with any other connection. this should minimize stray coupling, reduce noise injection, and minimize voltage shift cause by output load. to choose the resistors for the adjustable version, use the following equation: v out = 0.6 (1 + r top /r bot ) for stability, rtop should be 270k ohms to 330k ohms. output voltage sense, v out sense this is the input terminal for the voltage output feedback and is needed for both adjustable and fxed voltage versions. this should be connected to the main output capacitor, and the same good layout practices should be followed as for the fb connection. keep this line as short as possible, keep it away from the vsw and other switching or high frequency traces, and do not share this connection with any other connection on the pcb. switching output, vsw this is the switching node of the regulator. it should be connected directly to the 1.5uh inductor with a wide, short trace. it is switching between vcc and pgnd at the switching frequency. ground, gnd this ground is used for the majority of the device including the analog reference, control loop, and other circuits. power ground, pgnd this is a separate ground connection used for the low side synchronous fet to isolate switching noise from the rest of the device. enable, en this is an input terminal to activate the entire device. this will enable the internal reference, oscillator, tsd, etc, and allow the fault detection circuitry to work correctly. notice that the en needs to low for the part to exhibit 100na quiescent current. power good output, pg this is an open drain, active high output. the switched mode output voltage is monitored and the pg line will remain low until the output voltage reaches the v out-uv threshold, approximately 85% of the fnal regulation output. once the internal comparator detects the output voltage is above the desired threshold, an internal 10msec delay timer is activated and the pg line is de-asserted to high when this delay timer expires. in the event the output voltage decreases below v out- uv , the pg line will be asserted low immediately and remain low until the output rises above v out-uv and the delay timer times out again. if en is pulled low, the vcc input undervoltage trips, or thermal shutdown is reached, the pg pin will immediately be pulled low. nlow power mode output, nlp this is an input to force the pwm mode when light load is on the output. the pfm low power mode has higher output voltage ripple, which is some applications may be unacceptable. if low ripple is needed on the output this pin can be tied to vcc input, or switched above 1.0v during operation to force the device into normal pwm mode. www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 8 of 17 semtech internal protection details internal current limit current limit is always active when the regulator is enabled. high side current limit will shorten the high side on time and tri-state the high side. additionally, low side current limit will protect the low side fet and turn of the switch if current limit is sensed on the low side switch. since the output is fully synchronous, the current limit is protected on the low side in both the positive and negative direction. soft start soft start ensures current limit does not prevent regulator startup and minimize overshoot at startup. the typical startup time is 925us. these values do not change with output voltage, current limit settings, or adjustable/fxed mode. the soft start is re-triggered with the any rising edge that enables the regulator, including the en input pins, thermal shutdown, vcc undervoltage, or a vcc power cycle. thermal shutdown if the temperature of the die exceeds 170c, the vsw outputs will tri-state to protect the device from damage. the pg and all other protection circuitry will stay active to inform the system of the failure mode. once the device cools to 160c, the device will attempt to start up again, following the normal soft start sequence with 10ms delay on pg. if the device reaches 170c, the shutdown/restart sequence will repeat. output overvoltage if the output of the regulator exceeds 106% of the regulation voltage, the vsw outputs will tri-state to protect the device from damage. this check occurs at the start of each switching cycle. if it occurs during the middle of a cycle, the switching for that cycle will complete, and the vsw outputs will tri-state at the beginning of the next cycle. vcc under-voltage lockout the device is held in the of state until vcc reaches 1.9v. there is a 100mv hysteresis on this input, which requires the input to fall below 1.8v before the device will disable. www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 9 of 17 semtech 9 specifications subject to change www.triunesystems.com copyright ? 2012, triune systems, llc ts33000 version 1. 9 performance results 2v/div 2v/div 100m v/div 200ma/div 50m v/div 200ma/div enable v out 100mv /div 200mv /div typical performance characteristics t j = -40c to 125c, vcc = 12v (unless otherwise noted) fig.1 startup response fig.3 10ma to 300ma load step (v cc =4v, v out =0.8v) fig.2 10ma to 300ma load step (v cc =4v, v out =3.3v) fig.4 line transient response (v cc =4v, v out =0.8v) www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 10 of 17 semtech 10 specifications subject to change www.triunesystems.com copyright ? 2012, triune systems, llc ts33000 version 1. 9 3.23 3.24 3.25 3.26 3.27 3.28 3.29 3.3 0 100 200 300 400 500 600 v out (v) i out (ma) v cc =5.5v v cc =4 v - 0.0005 0 0.0005 0.001 0.0015 0.002 0.0025 0.003 0.0035 0.004 0.0045 4 4.5 5 5.5 delta (v- nput voltage (v- v out =3.3v v out =1.8v v out =0.8v 30% 40% 50% 60% 70% 80% 90% 100% 0 100 200 300 400 500 600 efficiency i out (ma) v =5.5v v =4v v =2v 10% 20% 30% 40% 50% 60% 70% 80% 90% 0 100 200 300 400 500 600 efficiency i out (ma) v cc =2v v cc =4v v cc =5.5v 30% 40% 50% 60% 70% 80% 90% 100% 0 100 200 300 400 500 600 efficiency i out (ma) v cc =2v v cc =5.5v v cc =4v typical performance characteristics t j = -40c to 125c, vcc = 12v (unless otherwise noted) fig.5 load regulation fig.7 efciency vs. output current (v out =1.8v) fig.9 efciency vs. output current (v out =0.8v) fig.6 line regulation (i out =300ma) fig.8 efciency vs. output current (v out =3.3v) fig.10 efciency vs. input voltage (v out =3.3v) www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 11 of 17 semtech 11 specifications subject to change www.triunesystems.com copyright ? 2012, triune systems, llc ts33000 version 1. 9 0 0.05 0.1 0.15 0.2 0.25 2 2.5 3 3.5 4 4.5 5 5.5 standby urrent ( a) input voltage (v) 0 0.1 0.2 0.3 0.4 0.5 0.6 - 50 - 25 0 25 50 75 100 125 standby urrent (ua- temperature( o - 3.265 3.27 3.275 3.28 3.285 3.29 3.295 3.3 3.305 3.31 3.315 3.32 - 50 - 25 0 25 50 75 100 125 vout (v- temperature ( o - i out =10ma i out =300ma 0.03 0.035 0.04 0.045 0.05 0.055 0.06 - 50 - 25 0 25 50 75 100 125 quesient urrent(ma- temperature ( o - 598 598.5 599 599.5 600 600.5 601 601.5 - 50 - 25 0 25 50 75 100 125 oscillator requency temperature ( o c- 1.95 2 2.05 2.1 2.15 2.2 2.25 2.3 2.35 - 50 - 25 0 25 50 75 100 125 input urrent no sw (ma- temperature ( o - typical performance characteristics t j = -40c to 125c, vcc = 12v (unless otherwise noted) fig.11 standby current vs. input voltage fig.13 output voltage vs. temperature fig.15 oscillator frequency vs. temperature fig.12 standby current vs. temperature fig.14 quiescent current vs. temperature fig.16 input current vs. temperature (no load, no switching) 11 specifications subject to change www.triunesystems.com copyright ? 2012, triune systems, llc ts33000 version 1. 9 0 0.05 0.1 0.15 0.2 0.25 2 2.5 3 3.5 4 4.5 5 5.5 standby urrent ( a) input voltage (v) 0 0.1 0.2 0.3 0.4 0.5 0.6 - 50 - 25 0 25 50 75 100 125 standby urrent (ua- temperature( o - 3.265 3.27 3.275 3.28 3.285 3.29 3.295 3.3 3.305 3.31 3.315 3.32 - 50 - 25 0 25 50 75 100 125 vout (v- temperature ( o - i out =10ma i out =300ma 0.03 0.035 0.04 0.045 0.05 0.055 0.06 - 50 - 25 0 25 50 75 100 125 quesient urrent(ma- temperature ( o - 598 598.5 599 599.5 600 600.5 601 601.5 - 50 - 25 0 25 50 75 100 125 oscillator requency temperature ( o c- 1.95 2 2.05 2.1 2.15 2.2 2.25 2.3 2.35 - 50 - 25 0 25 50 75 100 125 input urrent no sw (ma- temperature ( o - 11 specifications subject to change www.triunesystems.com copyright ? 2012, triune systems, llc ts33000 version 1. 9 0 0.05 0.1 0.15 0.2 0.25 2 2.5 3 3.5 4 4.5 5 5.5 standby urrent ( a) input voltage (v) 0 0.1 0.2 0.3 0.4 0.5 0.6 - 50 - 25 0 25 50 75 100 125 standby urrent (ua- temperature( o - 3.265 3.27 3.275 3.28 3.285 3.29 3.295 3.3 3.305 3.31 3.315 3.32 - 50 - 25 0 25 50 75 100 125 vout (v- temperature ( o - i out =10ma i out =300ma 0.03 0.035 0.04 0.045 0.05 0.055 0.06 - 50 - 25 0 25 50 75 100 125 quesient urrent(ma- temperature ( o - 598 598.5 599 599.5 600 600.5 601 601.5 - 50 - 25 0 25 50 75 100 125 oscillator requency temperature ( o c- 1.95 2 2.05 2.1 2.15 2.2 2.25 2.3 2.35 - 50 - 25 0 25 50 75 100 125 input urrent no sw (ma- temperature ( o - 11 specifications subject to change www.triunesystems.com copyright ? 2012, triune systems, llc ts33000 version 1. 9 0 0.05 0.1 0.15 0.2 0.25 2 2.5 3 3.5 4 4.5 5 5.5 standby urrent ( a) input voltage (v) 0 0.1 0.2 0.3 0.4 0.5 0.6 - 50 - 25 0 25 50 75 100 125 standby urrent (ua- temperature( o - 3.265 3.27 3.275 3.28 3.285 3.29 3.295 3.3 3.305 3.31 3.315 3.32 - 50 - 25 0 25 50 75 100 125 vout (v- temperature ( o - i out =10ma i out =300ma 0.03 0.035 0.04 0.045 0.05 0.055 0.06 - 50 - 25 0 25 50 75 100 125 quesient urrent(ma- temperature ( o - 598 598.5 599 599.5 600 600.5 601 601.5 - 50 - 25 0 25 50 75 100 125 oscillator requency temperature ( o c- 1.95 2 2.05 2.1 2.15 2.2 2.25 2.3 2.35 - 50 - 25 0 25 50 75 100 125 input urrent no sw (ma- temperature ( o - 11 specifications subject to change www.triunesystems.com copyright ? 2012, triune systems, llc ts33000 version 1. 9 0 0.05 0.1 0.15 0.2 0.25 2 2.5 3 3.5 4 4.5 5 5.5 standby urrent ( a) input voltage (v) 0 0.1 0.2 0.3 0.4 0.5 0.6 - 50 - 25 0 25 50 75 100 125 standby urrent (ua- temperature( o - 3.265 3.27 3.275 3.28 3.285 3.29 3.295 3.3 3.305 3.31 3.315 3.32 - 50 - 25 0 25 50 75 100 125 vout (v- temperature ( o - i out =10ma i out =300ma 0.03 0.035 0.04 0.045 0.05 0.055 0.06 - 50 - 25 0 25 50 75 100 125 quesient urrent(ma- temperature ( o - 598 598.5 599 599.5 600 600.5 601 601.5 - 50 - 25 0 25 50 75 100 125 oscillator requency temperature ( o c- 1.95 2 2.05 2.1 2.15 2.2 2.25 2.3 2.35 - 50 - 25 0 25 50 75 100 125 input urrent no sw (ma- temperature ( o - 11 specifications subject to change www.triunesystems.com copyright ? 2012, triune systems, llc ts33000 version 1. 9 0 0.05 0.1 0.15 0.2 0.25 2 2.5 3 3.5 4 4.5 5 5.5 standby urrent ( a) input voltage (v) 0 0.1 0.2 0.3 0.4 0.5 0.6 - 50 - 25 0 25 50 75 100 125 standby urrent (ua- temperature( o - 3.265 3.27 3.275 3.28 3.285 3.29 3.295 3.3 3.305 3.31 3.315 3.32 - 50 - 25 0 25 50 75 100 125 vout (v- temperature ( o - i out =10ma i out =300ma 0.03 0.035 0.04 0.045 0.05 0.055 0.06 - 50 - 25 0 25 50 75 100 125 quesient urrent(ma- temperature ( o - 598 598.5 599 599.5 600 600.5 601 601.5 - 50 - 25 0 25 50 75 100 125 oscillator requency temperature ( o c- 1.95 2 2.05 2.1 2.15 2.2 2.25 2.3 2.35 - 50 - 25 0 25 50 75 100 125 input urrent no sw (ma- temperature ( o - input voltage (v) temperature (c) temperature (c) temperature (c) temperature (c) temperature (c) www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 12 of 17 semtech external component selection the internal compensation is optimized for a 4.7uf output capacitor and a 1.5uh inductor. to keep the output ripple low, a low esr (less than 20mohm) ceramic is recommended. for optimal over-current protection, inductor should be able to handle the 400ma without saturation. functional description (continued) application using a multi-layer pcb to maximize the efciency of this package for application on a single layer or multi-layer pcb, certain guidelines must be followed when laying out this part on the pcb. the following are guidelines for mounting the exposed pad ic on a multi-layer pcb with ground a plane. package th er ma l pa d so ld er pad (lan d pa tt er n) th er ma l vi a' s package ou tl in e package and pcb la nd co nf ig ur atio n fo r a mu lt i- la ye r pc b jedec standard fr4 pcb cross-section: (square) pa ckage solder pa d package solder pad (bottom tr ace ) thermal vi a component tr aces thermal isolatio n powe r plane only 1.5748mm 0.0 - 0.071 mm board base & bottom pa d 0.5246 - 0.5606 mm powe r plan e (1oz cu ) 1.0142 - 1.0502 mm ground plan e (1oz cu ) 1.5038 - 1.5748 mm component tr ace (2oz cu) 2 plan e 4 plan e multi-layer board (cross-sectional view) in a multi-layer board application, the thermal vias are the primary method of heat transfer from the package thermal pad to the internal ground plane. the efciency of this method depends on several factors, including die area, number of thermal vias, thickness of copper, etc. www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 13 of 17 semtech the above drawing is a representation of how the heat can be conducted away from the die using an exposed pad package. each application will have diferent requirements and limitations and therefore the user should use sufcient copper to dissipate the power in the system. the output current rating for the linear regulators may have to be de-rated for ambient temperatures above 85c. the de-rate value will depend on calculated worst case power dissipation and the thermal management implementation in the application. application using a single layer pcb use as mu ch co pper ar ea as po ssib le fo r he at sp re ad package th er ma l pa d package ou tl in e layout recommendations for a single layer pcb: utilize as much copper area for power management. in a single layer board application the thermal pad is attached to a heat spreader (copper areas) by using low thermal impedance attachment method (solder paste or thermal conductive epoxy). in both of the methods mentioned above it is advisable to use as much copper traces as possible to dissipate the heat. important: if the attachment method is not implemented correctly, the functionality of the product is not guaranteed. power dissipation capability will be adversely afected if the device is incorrectly mounted onto the circuit board. mold compoun d di e epoxy die attach exposed pa d solder thermal vias with cu plating single layer, 2oz cu ground layer, 1oz cu signal layer , 1oz cu bottom layer, 2oz cu 20% cu coverage 90% cu coverage 5% - 10% cu coverage note: not to scal e www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 14 of 17 semtech units millimeters dimension limits min nom max number of pins n 16 pitch e 0.50 bsc overall height a 0.80 0.90 1.00 standof a1 0.00 0.02 0.05 contact thickness a3 0.20 ref overall length d 3.00 bsc exposed pad width e2 1.55 1.70 1.80 overall width e 3.00 bsc exposed pad length d2 1.55 1.70 1.80 contact width b 0.20 0.25 0.30 contact length l 0.20 0.30 0.40 contact-to-exposed pad k 0.20 - - package mechanical drawings (all dimensions in mm) www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 15 of 17 semtech recommeded pcb land pattern dimensions in millimeters units millimeters dimension limits min nom max contact pitch e 0.50 bsc optional center pad width w2 - - 1.70 optional center pad length t2 - - 1.70 contact pad spacing c1 - 3.00 - contact pad spacing c2 - 3.00 - contact pad width (x8) x1 - - 0.35 contact pad length (x8) y1 - - 0.65 distance between pads g 0.15 - - notes: dimensions and tolerances per asme y14.5m. bsc: basic dimension. theoretically exact values shown without tolerances. ref: reference dimension, usually without tolerance, for information only. www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 16 of 17 semtech ordering information part number description TS33000-M008QFNR 2.25mhz sync buck, 600ma - 0.8v ts33000-m012qfnr 2.25mhz sync buck, 600ma - 1.2v ts33000-m015qfnr 2.25mhz sync buck, 600ma - 1.5v ts33000-m018qfnr 2.25mhz sync buck, 600ma - 1.8v ts33000-m025qfnr 2.25mhz sync buck, 600ma - 2.5v ts33000-m033qfnr 2.25mhz sync buck, 600ma - 3.3v rohs and reach compliance triune systems is fully committed to environmental quality. all triune systems materials and suppliers are fully compliant with rohs (european union directive 2011/65/eu), reach svhc chemical restrictions (ec 1907/2006), ipc-1752 level 3 materials declarations, and their subsequent amendments. triune systems maintains certifed laboratory reports for all product materials, from all suppliers, which show full compliance to restrictions on the following: ? cadmium (cd) ? chlorofuorocarbons (cfcs) ? chlorinate hydrocarbons (chcs) ? halons (halogen free) ? hexavalent chromium (crvi) ? hydrobromofuorocarbons (hbfcs) ? hydrochlorofuorocarbons (hcfcs) ? lead (pb) ? mercury (hg) ? perfuorocarbons (pfcs) ? polybrominated biphenyls (pbb) ? polybrominated diphenyl ethers (pbdes) www.semtech.com
ts33000 final datasheet rev 1.9 may 1, 2015 17 of 17 semtech contactfinformation semtechfcorporation 200fflynnfroad,fcamarillo,fcaf93012 phone:f(805)f498-2111,ffax:f(805)f498-3804 www.semtech.com importantfnotice informationfrelatingftofthisfproductfandfthefapplicationforfdesignfdescribedfhereinfisfbelievedftofbefreliable,fhoweverfsuchfinformationfisfprovidedfasfaf guidefonlyfandfsemtechfassumesfnofliabilityfforfanyferrorsfinfthisfdocument,forfforfthefapplicationforfdesignfdescribedfherein.fsemtechfreservesfthefrightf tofmakefchangesftofthefproductforfthisfdocumentfatfanyftimefwithoutfnotice.fbuyersfshouldfobtainftheflatestfrelevantfinformationfbeforefplacingfordersf andfshouldfverifyfthatfsuchfinformationfisfcurrentfandfcomplete.fsemtechfwarrantsfperformancefoffitsfproductsftofthefspecifcationsfapplicablefatftheftimef offsale,fandfallfsalesfarefmadefinfaccordancefwithfsemtechsfstandardftermsfandfconditionsfoffsale. semtechfproductsfarefnotfdesigned,fintended,fauthorizedforfwarrantedftofbefsuitablefforfusefinflife-supportfapplications,fdevicesf orfsystems,forfinfnuclearfapplicationsfinfwhichftheffailurefcouldfbefreasonablyfexpectedftofresultfinfpersonalfinjury,flossfofflifef orfseverefpropertyforfenvironmentalfdamage.finclusionfoffsemtechfproductsfinfsuchfapplicationsfisfunderstoodftofbefundertakenf solelyfatfthefcustomersfownfrisk.fshouldfafcustomerfpurchaseforfusefsemtechfproductsfforfanyfsuchfunauthorizedfapplication,fthefcustomerfshallf indemnifyfandfholdfsemtechfandfitsfofcers,femployees,fsubsidiaries,fafliates,fandfdistributorsfharmlessfagainstfallfclaims,fcostsfdamagesfandfattorneyf feesfwhichfcouldfarise. thefsemtechfnamefandflogofarefregisteredftrademarksfoffthefsemtechfcorporation.fallfotherftrademarksfandftradefnamesfmentionedfmayfbefmarksfandf namesfoffsemtechforftheirfrespectivefcompanies.fsemtechfreservesfthefrightftofmakefchangesfto,forfdiscontinuefanyfproductsfdescribedfinfthisfdocumentf withoutffurtherfnotice.fsemtechfmakesfnofwarranty,frepresentationforfguarantee,fexpressforfimplied,fregardingfthefsuitabilityfoffitsfproductsfforfanyf particularfpurpose.fallfrightsfreserved.f ?fsemtechf2015

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