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FAN5602MP45X Folha de dados(PDF) 1 Page - Fairchild Semiconductor |
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FAN5602MP45X Folha de dados(HTML) 1 Page - Fairchild Semiconductor |
1 / 14 page © 2005 Fairchild Semiconductor Corporation www.fairchildsemi.com May 2007 FAN5602 Rev. 1.5.1 FAN5602 — Universal (Step-Up/Step-Down) Charge Pump Regulated DC/DC Converter Features ■ Low-Noise, Constant-Frequency Operation at Heavy Load ■ High-Efficiency, Pulse-Skip (PFM) Operation at Light Load ■ 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 converter 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 topolo- gies. Depending upon actual load conditions, the device automatically switches between constant-frequency and pulse-skipping modes of operation 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 efficiency is achieved under various input/ output voltage conditions because an internal logic circuit automatically reconfigures the system to the best possi- ble topology. Only two 1µF bucket capacitors and one 10µF output capacitor are needed. During power on, soft-start circuitry prevents excessive current 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 out- put voltage. Any other output voltage option within the 1.5V to 5V range is available upon request. The FAN5602 is available 3x3mm 8-lead MLP packages. Ordering Information Note: 1. Reference MLP08D Option B ONLY. Application Diagram Figure 2. Typical Application Diagram Part Number Package(1) Pb-Free Output Voltage, VNOM FAN5602MP33X 3x3mm 8-Lead MLP Yes 3.3V FAN5602MP45X 3x3mm 8-Lead MLP Yes 4.5V FAN5602MP5X 3x3mm 8-Lead MLP Yes 5.0V 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 - FAN5602MP45X |
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Descrição semelhante - FAN5602MP45X |
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