AME, Inc. AME7739 Step-Up / Step-Down 60mA Regulated Charge Pump n General Description n Functional Block Diagram 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. C- VIN φ1 φ2 φ1 φ2 VOUT φ1 The AME7739 contains a thermal management circuit to protect the device under continuous output short circuit conditions. C+ EN φ2 EA Control + The AME7739 is available in SOT-26 package and is rated from -40OC to 85OC. n Features GND n Typical Application 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 < 1µA l Short Circuit Protection:Typ. 80mA C+ OUT CPUMP = 0.22µF 3.0V to 5.5V VIN 5V / 60mA VOUT COUT = 2.2µF IN AME 7739 GND l Over Temperature Protection l All AME's Lead Free Product Meet RoHS Standards CCIN = 2.2µF 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. Step-Up / Step-Down 60mA Regulated Charge Pump AME7739 n Pin Configuration SOT-26 Top View 6 5 AME7739AEEY 4 1. OUT 2. GND AME7739 3. EN 4. C5. IN 1 2 3 6. C+ * Die Attach: Conductive Epoxy n Pin Description 2 Pin Number Pin Name Description 1 OUT Regulator Output Pin. VOUT should be bypassed with a 2.2uF low ESR ceramic capacitor. 2 GND Ground Pin Connection. 3 EN Enable Input. Active Low disable the regulator. 4 C- Pump Capacitor Negative Terminal. 5 IN Input Supply Pin. VIN should be bypassed with a 2.2uF low ESR ceramic capacitor. 6 C+ Pump Capacitor Positive Terminal. REV. A.02 AME, Inc. Step-Up / Step-Down 60mA Regulated Charge Pump AME7739 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 A (SOT-26) 1. OUT 2. GND 3. EN 4. C5. IN 6. C+ Operating Ambient Temperature Range E: -40OC to 85OC Package Type E: SOT-2X Number of Pins Y: 6 Output Voltage Special Feature 330: V=3.3V 500: V=5V 550: V=5.5V Z: Lead free n Ordering Information Part Number Marking* Output Voltage Package Operating Ambient Temperature Range AME7739AEEY330Z BJFww 3.3V SOT-26 - 40oC to 85oC AME7739AEEY500Z BENww 5V SOT-26 - 40oC to 85oC AME7739AEEY550Z BDWww 5.5V SOT-26 - 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. Step-Up / Step-Down 60mA Regulated Charge Pump AME7739 n Absolute Maximum Ratings Parameter Maximum Input Voltage, Output Voltage, C-, C+ Unit -0.3~5.5 V EN -0.3~VIN + 0.3 B* ESD Classification 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 Symbol Rating Unit Ambient Temperature Range TA - 40 to 85 o Junction Temperature Range TJ - 40 to 125 o Storage Temperature Range TSTG - 65 to 150 o C C C n Thermal Information Parameter Package Die Attach Thermal Resistance* (Junction to Case) Symbol Maximum θJC 81 Unit o C/W Thermal Resistance (Junction to Ambient) SOT-26 Conductive Epoxy Internal Power Dissipation θJA 260 PD 400 mW Maximum Junction Temperature 150 o C Solder Iron (10 Sec)** 350 o C * Measure θJC on backside center of molding compund if IC has no tab. ** MIL-STD-202G 210F 4 REV. A.02 AME, Inc. Step-Up / Step-Down 60mA Regulated Charge Pump AME7739 n Electrical Specifications (Contd.) TA= -40oC to 85oC, VIN = VOUT/2+0.75V, IOUT = 5mA, CIN = 2.2µF, COUT=2.2µF, CPUMP = 0.22 µF, VEN= 1.3V Typical Values are at TA=25oC Parameter Input Voltage Symbol VIN Test Conditions Min VOUT = 5.5V 3 5.5 VOUT = 5V 2.7 5.5 VOUT = Others 1.8 5.5 IOUT <= 60mA, 3.3V < VIN < 5.5V 5.23 5.5 5.77 4.75 5 5.25 3.14 3.3 3.46 2.85 3 3.15 2.57 2.7 2.83 2.38 2.5 2.62 60 100 0.01 1 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 Typ Max Units V V 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 ISHDN 1.8V < VIN < 5.5V, VEN = GND Output Current IOUT VOUT = 5V Short Circuit Current Limit ISC VOUT = GND 80 VIN = 3V, IOUT = 60mA, VOUT = 5V 60 VIN = 3.3V, IOUT = 60mA, VOUT = 5.5V 70 Ripple Voltage (Note1) VRIPPLE 60 µA mA mA mVp-p Efficiency η IOUT = 15mA, VIN = 2.7V, VOUT = 5V 90 % Frequency fOSC Oscillator Free Running 1.0 MHz EN Input Threshold High VEH EN Input Threshold Low VEL EN Input Current IEN 1.3 V VEN = VIN, VEN = GND Over Temperature Shutdown OTS 160 Over Temperature Hysterisis OTH 20 0.6 V 0.1 µA o C Note 1: Effective series resistance (ESR) of capacitors is < 0.1Ω. 5 Rev.A.02 AME, Inc. AME7739 Step-Up / Step-Down 60mA Regulated Charge Pump n Detailed Description n Efficiency 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. 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. 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 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 1µA maximum. The approximate efficiency is given by: 5.5V, 5V Version (VIN<= VOUT) Efficiency (%) = VOUT / 2VIN ． 100% Others Version (VIN> VOUT) Efficiency (%) = VOUT / VIN ． 100% 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 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 0.1µF pump capacitor (CPUMP) and smaller 1µF input and output capacitor (CIN and COUT, respectively) can be used. To minimize output voltage ripple, increase the output capacitor, COUT, to 10µF or larger. 6 REV. A.02 AME, Inc. Step-Up / Step-Down 60mA Regulated Charge Pump AME7739 Efficiency vs VIN Output Voltage vs Temperature 100 1.5 Efficiency (%) Output Voltage Change (%) VOUT=5.0V 90 80 70 60 50 40 30 1.5 2 2.5 3 3.5 4 4.5 5 1 0.5 0 -0.5 -1 -1.5 -2 -40 5.5 -20 0 VIN (V) 200 100 180 90 160 60 80 100 120 140 VIN=2.7V 80 140 Efficiency (%) Short Circuit Current (mA) 40 Efficiency vs Load Current Short Circuit Current vs VIN 120 100 80 60 VIN=3.3V 70 60 50 VIN=5V 40 30 40 20 20 0 1.5 20 Junction Temperature(oC) 2 2.5 3 3.5 4 4.5 5 VOUT=5.0V 10 0.1 5.5 1 10 100 Load Current (mA) VIN (V) Shutdown Current vs Temperature Supply Current vs Temperature (No Load) 100 100 90 Shutdown Current (nA) Supply Current (µA) 80 60 40 20 80 70 60 50 40 30 20 10 0 -40 -20 0 25 Temperature 7 55 (oC) 85 125 0 -40 -20 0 25 55 85 125 Temperature (oC) Rev.A.02 AME, Inc. Step-Up / Step-Down 60mA Regulated Charge Pump AME7739 Output Ripple Voltage vs VIN Output Ripple Voltage vs VIN 160 VOUT=5V IOUT=15mA 140 120 Output Ripple (mVp-p) Output Ripple (mVp-p) 140 160 COUT=2.2µF(X7R) 100 80 60 40 20 0 2.7 COUT=10µF(X7R) 3 3.2 3.5 4 4.5 5 VOUT=5V IOUT=60mA 120 COUT=2.2µF(X7R) 100 80 60 40 20 5.5 0 3 COUT=10µF(X7R) 3.2 3.5 VIN (V) 4 4.5 5 5.5 VIN(V) Load Transient Response Input Current at Turn-On VOUT 50mV/div 100mA/div IIN VOUT ILOAD VOUT=5V VIN=3V IOUT=60mA BW=20MHz 2V/div 10mA/div VOUT =5.0V BW=20MHz Time (10µs/div) Time (200µs/div) Line Transient Response VOUT =5.0V, IOUT=60mA BW=20MHz 4.5V 3.5V 2V/div VIN 50mV/div VOUT Time (40µs/div) 8 REV. A.02 AME, Inc. Step-Up / Step-Down 60mA Regulated Charge Pump AME7739 n Date Code Rule Marking Date Code Year A A A W W xxx0 A A A W W xxx1 A A A W W xxx2 A A A W W xxx3 A A A W W xxx4 A A A W W xxx5 A A A W W xxx6 A A A W W xxx7 A A A W W xxx8 A A A W W xxx9 n Tape & Reel Dimension SOT-26 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size 9 Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size SOT-26 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm Rev.A.02 AME, Inc. Step-Up / Step-Down 60mA Regulated Charge Pump AME7739 n Package Dimension SOT-26 Top View Side View SYMBOLS D e MAX INCHES MIN MAX L MIN E A H MILLIMETERS θ1 0.00 0.15 0.0000 0.0059 b 0.30 0.55 0.0118 0.0217 D 2.70 3.10 0.1063 0.1220 E 1.40 1.80 0.0551 0.0709 H L Front View θ1 S1 1.90 BSC 2.60 3.00 0.37REF 0o 10 o 0.95REF 0.0748 BSC 0.10236 0.11811 0.0146REF 0o 10 o 0.0374REF A1 A 0.0472REF A1 e S1 1.20REF b 10 REV. A.02 www.ame.com.tw E-Mail: [email protected] 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. AME, Inc. , February 2007 Document: 1033-DS7739-A.02 Corporate Headquarter U.S.A. (Subsidiary) AME, Inc. Analog Microelectronics, Inc. 2F, 302 Rui-Guang Road, Nei-Hu District 3100 De La Cruz Blvd., Suite 201 Taipei 114, Taiwan, R.O.C. Tel: 886 2 2627-8687 Santa Clara, CA. 95054-2438 Tel : (408) 988-2388 Fax: 886 2 2659-2989 Fax: (408) 988-2489