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| AME, Inc. AME7739 Step-Up / Step-Down 60mA Regulated Charge Pump n Functional Block Diagram VIN 2 CC+ 1 n General Description The AME7739 is a charge pump voltage converter that delivers a regulated output. No external inductor is required for operation. Using three small capacitors, the AME7739 can deliver up to 60mA to the voltage regulated output. The AME7739 features very low output ripple and high efficiency over a large portion of its load range making this device ideal for battery-powered applications. Furthermore, the combination of few external components and small package size keep the total converter board area to a minimum in space restricted applications. The AME7739 contains a thermal management circuit to protect the device under continuous output short circuit conditions. The AME7739 is available in SOT-26 package and is rated from -40OC to 85OC. 1 2 VOUT 1 2 Control EA + EN GND n Features l Output Voltage Range: 5.5V, 5V, 3.3V, 3.0V, 2.7V, 2.5V l Accurate to with 5% l 1MHZ Switching Frequency l Shutdown Supply Current < 1A l Short Circuit Protection:Typ. 80mA l Over Temperature Protection l All AME's Lead Free Product Meet RoHS Standards n Typical Application C+ CPUMP = 0.22F 3.0V to 5.5V VIN IN OUT 5V / 60mA VOUT COUT = 2.2F AME 7739 GND CCIN = 2.2F EN ON OFF n Applications l Cellular Phone l Digital Camera l PDAs LCD display l LED/Display Back Light Driver l Smart Card Reader l SIM Card Supply l PCMCIA Card l LCD Display 1 Rev.A.02 AME, Inc. AME7739 Step-Up / Step-Down 60mA Regulated Charge Pump n Pin Configuration SOT-26 Top View 6 5 4 AME7739AEEY 1. OUT 2. GND AME7739 3. EN 4. C5. IN 1 2 3 6. C+ * Die Attach: Conductive Epoxy n Pin Description Pin Number 1 2 3 4 5 6 Pin Name OUT GND EN CIN C+ Description Regulator Output Pin. VOUT should be bypassed with a 2.2uF low ESR ceramic capacitor. Ground Pin Connection. Enable Input. Active Low disable the regulator. Pump Capacitor Negative Terminal. Input Supply Pin. VIN should be bypassed with a 2.2uF low ESR ceramic capacitor. Pump Capacitor Positive Terminal. 2 REV. A.02 AME, Inc. AME7739 Step-Up / Step-Down 60mA Regulated Charge Pump n Ordering Information AME7739 x x x x xxx x Special Feature Output Voltage Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration Pin Configuration Operating Ambient Temperature Range Package Type Number of Pins Y: 6 Output Voltage Special Feature A (SOT-26) 1. OUT 2. GND 3. EN 4. C5. IN 6. C+ E: -40OC to 85OC E: SOT-2X 330: V=3.3V 500: V=5V 550: V=5.5V Z: Lead free n Ordering Information Part Number AME7739AEEY330Z AME7739AEEY500Z AME7739AEEY550Z Marking* BJFww BENww BDWww Output Voltage 3.3V 5V 5.5V Package SOT-26 SOT-26 SOT-26 Operating Ambient Temperature Range - 40oC to 85oC - 40oC to 85oC - 40oC to 85oC Note: ww represents the date code and pls refer to Date Code Rule before Package Dimension. * A line on top of the first letter represents lead free plating such as BJFww. Please consult AME sales office or authorized Rep./Distributor for the availability of package type. 3 Rev.A.02 AME, Inc. AME7739 Step-Up / Step-Down 60mA Regulated Charge Pump n Absolute Maximum Ratings Parameter Input Voltage, Output Voltage, C-, C+ EN ESD Classification Maximum -0.3~5.5 Unit V -0.3~VIN + 0.3 B* Note: Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device. *HBM B:2000V~2999V n Recommended Operating Conditions Parameter Ambient Temperature Range Junction Temperature Range Storage Temperature Range Symbol TA TJ TSTG Rating - 40 to 85 - 40 to 125 - 65 to 150 Unit o C C C o o n Thermal Information Parameter Thermal Resistance* (Junction to Case) Thermal Resistance (Junction to Ambient) Internal Power Dissipation Maximum Junction Temperature Solder Iron (10 Sec)** SOT-26 Conductive Epoxy Package Die Attach Symbol JC JA PD Maximum 81 Unit o C/W 260 400 150 350 mW o o C C * Measure JC on backside center of molding compund if IC has no tab. ** MIL-STD-202G 210F 4 REV. A.02 AME, Inc. AME7739 Step-Up / Step-Down 60mA Regulated Charge Pump n Electrical Specifications (Contd.) TA= -40oC to 85oC, VIN = VOUT/2+0.75V, IOUT = 5mA, CIN = 2.2F, COUT=2.2F, CPUMP = 0.22 F, VEN= 1.3V Typical Values are at TA=25oC Parameter Symbol Test Conditions VOUT = 5.5V Input Voltage VIN VOUT = 5V VOUT = Others IOUT <= 60mA, 3.3V < VIN < 5.5V IOUT <= 15mA, 2.7V < VIN < 5.5V IOUT <= 60mA, 3.0V < VIN < 5.5V IOUT <= 15mA, 1.8V < VIN < 5.5V IOUT <= 60mA, 2.2V < VIN < 5.5V Output Voltage VOUT IOUT <= 15mA, 1.8V < VIN < 5.5V IOUT <= 60mA, 2.2V < VIN < 5.5V IOUT <= 15mA, 1.8V < VIN < 5.5V IOUT <= 60mA, 2.0V < VIN < 5.5V IOUT <= 15mA, 1.8V < VIN < 5.5V IOUT <= 60mA, 2.0V < VIN < 5.5V 3V < VIN < 5.5V, IOUT = 0mA, VOUT = 5.5V Quiescent Current IQ 2.7V < VIN < 5.5V, IOUT = 0mA, VOUT = 5V 1.8V < VIN < 5.5V, IOUT = 0mA, VOUT = Others Shutdown Current Output Current Short Circuit Current Limit Ripple Voltage (Note1) Efficiency Frequency EN Input Threshold High EN Input Threshold Low EN Input Current Over Temperature Shutdown Over Temperature Hysterisis ISHDN IOUT ISC VRIPPLE fOSC VEH VEL IEN OTS OTH VEN = VIN, VEN = GND 160 20 1.8V < VIN < 5.5V, VEN = GND VOUT = 5V VOUT = GND VIN = 3V, IOUT = 60mA, VOUT = 5V VIN = 3.3V, IOUT = 60mA, VOUT = 5.5V IOUT = 15mA, VIN = 2.7V, VOUT = 5V Oscillator Free Running 1.3 0.6 0.1 60 80 60 70 90 1.0 0.01 1 mA mA mVp-p % MHz V V A o Min 3 2.7 1.8 5.23 4.75 Typ Max 5.5 5.5 5.5 Units V 5.5 5 5.77 5.25 3.14 3.3 3.46 V 2.85 3 3.15 2.57 2.7 2.83 2.38 2.5 2.62 60 100 A C Note 1: Effective series resistance (ESR) of capacitors is < 0.1. 5 Rev.A.02 AME, Inc. AME7739 Step-Up / Step-Down 60mA Regulated Charge Pump n Efficiency The efficiency of the charge pump regulator varies with the output voltage version, the applied input voltage, the load current, and the internal operation mode of the device. The approximate efficiency is given by: 5.5V, 5V Version (VIN<= VOUT) Efficiency (%) = VOUT / 2VIN D100% Others Version (VIN> VOUT) Efficiency (%) = VOUT / VIN D100% n Detailed Description The AME7739 regulated charge pump provides a regulated input voltages ranging from less than the output to greater than the input. This is accomplshed by automatic mode switching within the device. n Short Circuit and Thermal Protection The AME7739 has a thermal protection and shutdown circuit that continuously monitors the IC junction temperature. If the thermal protection circuit senses the die temperature exceeding approximately 160OC, the thermal shutdown will disable the charge pump switching cycle operation, The thermal limit system has 20OC of system hysteresis before the charge pump can reset. Once the over current event is removed from the output and the junction temperature drops below 140OC, the charge pump will the become active again. The thermal protection system will cycle on and off if an output short circuit condition persists. This will allow the AME7739 to operate indefinitely a short circuit condition without damage to the device. n Layout Large ripple currents flow in the VIN and VOUT traces. To minimized both input and output ripple, keep the capacitors as close as possible to the regulator using short, direct circuit traces. The trace lengths from the input and output capacitors have been kept as short as possible. A star ground system has been implemented, with GND pin as the center of the star. No ground plane is provided in other layers, as this will provide capacitive coupling for noise spikes. n Shutdown Mode A control pin EN on the regulator can be used to place the device into an energy-saving shutdown mode. In this mode, the output is disconnected from the input as long as VIN is greater than or equal to minimum VIN and input quiescent current is reduced to 1A maximum. n Capacitor Selection For minimum output voltage ripple, the output capacitor COUT should be a ceramic, surface-mount type. Tantalum capacitors generally have a higher Effective Series Resistance (ESR) and may contribute to higher output voltage ripple. Leaded capacitors also increase ripple due to the higher inductance of the package itself. To achieve best operation with low input voltage and high load current, the input and pump capacitors (CIN, CPUMP respectively) should also be surfacemount ceramic types. In all cases, X7R dielectric is recommended. With light loads or higher input voltage, a smaller 0.1F pump capacitor (CPUMP) and smaller 1F input and output capacitor (CIN and COUT, respectively) can be used. To minimize output voltage ripple, increase the output capacitor, COUT, to 10F or larger. 6 REV. A.02 AME, Inc. AME7739 Efficiency vs VIN 100 1.5 Step-Up / Step-Down 60mA Regulated Charge Pump Output Voltage vs Temperature Output Voltage Change (%) 5.5 90 80 70 60 50 40 30 1.5 VOUT=5.0V 1 0.5 0 -0.5 -1 -1.5 -2 -40 Efficiency (%) 2 2.5 3 3.5 4 4.5 5 -20 0 20 40 60 80 100 120 140 VIN (V) Junction Temperature(oC) Short Circuit Current vs VIN 200 180 100 90 80 Efficiency vs Load Current Short Circuit Current (mA) VIN=2.7V VIN=3.3V 160 Efficiency (%) 140 120 100 80 60 40 20 0 1.5 2 2.5 3 3.5 4 4.5 5 5.5 70 60 50 40 30 20 10 0.1 VIN=5V VOUT=5.0V 1 10 100 VIN (V) Load Current (mA) Supply Current vs Temperature (No Load) 100 Shutdown Current vs Temperature 100 90 Shutdown Current (nA) -20 0 25 55 85 125 80 80 70 60 50 40 30 20 10 Supply Current (A) 60 40 20 0 -40 0 -40 -20 0 25 55 85 125 Temperature (oC) Temperature (oC) 7 Rev.A.02 AME, Inc. AME7739 Output Ripple Voltage vs VIN 160 140 Step-Up / Step-Down 60mA Regulated Charge Pump Output Ripple Voltage vs VIN 160 140 VOUT=5V IOUT=15mA VOUT=5V IOUT=60mA Output Ripple (mVp-p) 120 100 80 60 40 20 0 2.7 Output Ripple (mVp-p) COUT=2.2F(X7R) 120 100 80 60 40 20 0 COUT=2.2F(X7R) COUT=10F(X7R) 3 3.2 3.5 4 4.5 5 5.5 COUT=10F(X7R) 3.2 3.5 4 4.5 5 5.5 3 VIN (V) VIN(V) Input Current at Turn-On Load Transient Response VOUT 50mV/div 100mA/div IIN VOUT 2V/div VOUT=5V VIN=3V IOUT=60mA BW=20MHz ILOAD 10mA/div VOUT =5.0V BW=20MHz Time (200s/div) Time (10s/div) Line Transient Response VOUT =5.0V, IOUT=60mA BW=20MHz 4.5V 3.5V 2V/div VIN 50mV/div VOUT Time (40s/div) 8 REV. A.02 AME, Inc. AME7739 Step-Up / Step-Down 60mA Regulated Charge Pump n Date Code Rule Marking A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A Date Code W W W W W W W W W W W W W W W W W W W W Year xxx0 xxx1 xxx2 xxx3 xxx4 xxx5 xxx6 xxx7 xxx8 xxx9 n Tape & Reel Dimension SOT-26 P W AME PIN 1 AME Carrier Tape, Number of Components Per Reel and Reel Size Package SOT-26 Carrier Width (W) 8.00.1 mm Pitch (P) 4.00.1 mm Part Per Full Reel 3000pcs Reel Size 1801 mm 9 Rev.A.02 AME, Inc. AME7739 Step-Up / Step-Down 60mA Regulated Charge Pump n Package Dimension SOT-26 Top View D e Side View SYMBOLS L MILLIMETERS MIN MAX 0.15 0.55 3.10 1.80 INCHES MIN 0.0000 0.0118 0.1063 0.0551 MAX 0.0059 0.0217 0.1220 0.0709 A A1 H E 1.20REF 0.00 0.30 2.70 1.40 0.0472REF b D c1 S1 E e H L 1 1.90 BSC 2.60 3.00 0.0748 BSC 0.10236 0.11811 0.0146REF 0o 10 o 0.37REF 0o 10 o Front View A S1 0.95REF 0.0374REF b 10 A1 REV. A.02 www.ame.com.tw E-Mail: sales@ame.com.tw Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. (c) AME, Inc. , February 2007 Document: 1033-DS7739-A.02 Corporate Headquarter AME, Inc. 2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan, R.O.C. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989 U.S.A. (Subsidiary) Analog Microelectronics, Inc. 3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2438 Tel : (408) 988-2388 Fax: (408) 988-2489 |
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