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FAN5602 Folha de dados(PDF) 1 Page - Fairchild Semiconductor |
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FAN5602 Folha de dados(HTML) 1 Page - Fairchild Semiconductor |
1 / 16 page www.fairchildsemi.com REV. 1.1 10/7/04 Features •Low Noise Constant Frequency Operation at Heavy Load • High Efficiency Pulse-Skip (PFM) Operation at Light Load • Adaptive Seven Switch Configurations (1:3, 1:2, 2:3, 1:1, 3:2, 2:1, 3:1) • 92% Peak Efficiency • Input Voltage Range: 2.7V to 5.5V • Output Current:3.3V, 200mA at VIN = 3.6V • ±3% Output Voltage Accuracy •ICC < 1µA in Shutdown Mode • 1MHz Operating Frequency • Shutdown Isolates Output from Input • Soft-Start Limits Inrush Current at Start-up • Short Circuit and Over Temperature Protection • Minimum External Component Count • No Inductors Applications • Cell Phones • Handheld Computers • Portable RF Communication Equipment • Core Supply to Low Power Processors •Low Voltage DC Bus • DSP Supplies Description The FAN5602 is a universal switched capacitor DC/DC con- verter capable of step-up or step-down operation. Due to its unique adaptive fractional switching topology, the device achieves high efficiency over a wider input/output voltage range than any of its predecessors. The FAN5602 utilizes resistance modulated loop control, which produces lower switching noise than other topologies. Depending upon actual load conditions, the device automatically switches between constant frequency and pulse skipping (PFM) modes of operation in order to extend battery life. The FAN5602 produces a fixed regulated output within the range of 2.7V to 5.5V from any type of voltage source. High effi- ciency is achieved under any input/output voltage conditions because an internal logic circuitry automatically reconfigures the system to the best possible topology. Only two 1µF bucket capacitors and one 10µF output capacitor are needed. During power on soft start circuitry prevents excessive cur- rent drawn from the supply. The device is protected against short circuit and over temperature conditions. The FAN5602 is available with 3.3V, 4.5V, and 5.0V output voltage. Any other output voltage option within the 1.5V to 5V range is available upon request. The FAN5602 is avail- able in 8-lead MSOP and 3x3mm 8-lead MLP packages FAN5602 Universal (Step-Up/Step-Down) Charge Pump Regulated DC/DC Converter Typical Application FAN5602 COUT CB CIN GND VIN VOUT C2+ C1+ C1- C2- ENABLE Input 2.7V to 5.5V 2 1 3 4 5 8 7 6 |
Nº de peça semelhante - FAN5602 |
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Descrição semelhante - FAN5602 |
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