SYNCHRONOUS BOOST DC/DC CONVERTER FSP3602 FEATURES z z z z z z z z z Up to 96% Efficiency Low voltage start-up：0.9V Shut-down current: < 1µA Input voltage：0.6V～4.4V Output voltage ： 2.5V ～ 4.3V (Up to 5V with Schottky) Low switch on resistance RDS(ON), Internal switch: 0.35Ω 1.4MHz fixed frequency switching High switch on current: 1A Short-Circuit protection Low profile SOT23-6L package APPLICATIONS z z z z z z Digital cameras and MP3 Palmtop computers / PDAs Cellular phones Wireless handsets and DSL modems PC cards Portable media player The FSP3602 is high efficiency synchronous, step-up DC/DC converters optimized to provide a high efficient solution to medium power systems. The devices work under the input voltage between 0.6V and 4.4V with a 1.4MHz fixed frequency switching. These features minimizes overall solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. The FSP3602 is capable of supplying an output voltage between 2.5V and 4.3V, the internal synchronous switch is desired to provide high efficiency without Schottky. The devices also featured providing 180mA from a single AA cell input or 400mA from a 2-cell AA with a 3V/3.3V output. The FSP3602 converter is available in the industry standard SOT23-6L power packages (or upon request). PIN CONFIGURATION z GENERAL DESCRIPTION (Top View) Pin Number 1 2 3 4 5 6 1/5 Pin Name SW GND FB EN VOUT VIN VIN VOUT EN 6 5 4 1 2 3 SW GND FB Pin Function Switch Output Ground Feedback ON/OFF Control(High Enable) Output Input 2007-12-31 SYNCHRONOUS BOOST DC/DC CONVERTER BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS Parameter Power Dissipation VIN VOUT VSW VEN Operating Temperature Range Lead Temperature (Soldering 10 sec.) Storage Temperature Range 2/5 FSP3602 Rating Internally limited 0.6 ~ 4.4 2.5 ~ 5 0.6 ~ 5 1.0 ~ 4.4 - 30 ~ +85 + 300 - 65 ~ +125 Unit W V V V V ℃ ℃ ℃ 2007-12-31 SYNCHRONOUS BOOST DC/DC CONVERTER FSP3602 ELECTRICAL CHARACTERISTICS (NOTE 4) (VIN= 1.2V, VOUT= 3.3V, TA=25℃, Unless otherwise noted) Parameter Condition Output Voltage Range (Adj.) Min. Typ. 2.5 5 V ILOAD = 1mA 0.9 1.1 V Minimum Operating Voltage EN = VIN 0.5 0.65 V 1.1 1.4 1.7 MHz 80 87 % 40 ns Max Duty Cycle VFB = 1.15V Current Limit Delay to Output Feedback Voltage 1.165 1.203 1.241 V Feedback Input Current VFB = 1.25V 1 NMOS Switch Leakage VSW = 5V 0.1 5 µA PMOS Switch Leakage 0.1 5 µA NMOS Switch On Resistance 0.35 Ω PMOS Switch On Resistance 0.45 Ω 950 mA NMOS Current Limit 700 Quiescent Current (Active) Shutdown Current VEN=0V, Not Including Switch Leakage En Input High En Input Current nA 300 500 µA 0.01 1 µA 1 V En Input Low 3/5 Unit Minimum Start-Up Voltage Switching Frequency Max. VEN = 5.5V 0.01 0.35 V 1 µA TYPICAL APPLICATION CIRCUIT 2007-12-31 SYNCHRONOUS BOOST DC/DC CONVERTER FSP3602 ORDERING INFORMATION FSP3602XXXX Package: C: SOT23-6L Output Voltage: Blank: ADJ Packing: A: Tape & Reel Temperature Grade: K: -30~85℃ MARKING INFORMATION UAYMX Internal Code Date Code: Y: Year (1=2001) M: Month (1~9, O, N, D) Part Number: FSP3602 4/5 2007-12-31 SYNCHRONOUS BOOST DC/DC CONVERTER FSP3602 PACKAGE INFORMATION D 2 3 e A1 1 A 4 E 5 E1 6 A2 e1 b C θ L Symbol A A1 A2 b C D E E1 L e e1 θ 5/5 Dimensions In Millimeters Min. Max. 1.050 1.250 0.000 0.100 1.050 1.150 0.300 0.500 0.100 0.200 2.820 3.020 2.650 2.950 1.500 1.700 0.300 0.600 0.95 Bsc. 1.90 Bsc. 0ο 8ο Dimensions In Inches Min. Max. 0.041 0.049 0.000 0.004 0.041 0.045 0.012 0.020 0.004 0.008 0.111 0.119 0.104 0.116 0.060 0.068 0.012 0.024 0.038 Bsc. 0.076 Bsc. 0ο 8ο 2007-12-31