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ADP3607 Datasheet(PDF) 1 Page - Analog Devices |
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ADP3607 Datasheet(HTML) 1 Page - Analog Devices |
1 / 8 page REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a ADP3607 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999 50 mA Switched Capacitor Voltage Boost with Regulated Output FUNCTIONAL BLOCK DIAGRAM OSC CLOCK GEN 1.5 V VREF S1 CP– GND CP+ V OUT S3 FB V SENSE S2 S4 SD V IN + VOUT 5.0V VIN 3.3V *CO 4.7 F + *CIN 4.7 F + ADP3607-5 *CP 4.7 F OFF ON 0 VSENSE VIN CP+ CP– SD VOUT *FOR BEST PERFORMANCE, 10 F IS RECOMMENDED CP : SPRAGUE, 293D475X0010B2W CIN, CO: TOKIN, 1E475ZY5UC205F GND D1 SD103 Figure 1. Typical Application Circuit FEATURES Fully Regulated Output Voltage (5 V and Adjustable) Input Voltage Range From 3 V to 5 V 50 mA Output Current Output Accuracy: 5% High Switching Frequency: 250 kHz SO-8 and TSSOP-8 Packages –40 C to +85 C Ambient Temperature Range APPLICATIONS Computer Peripherals and Add-On Cards Portable Instruments Battery Powered Devices Pagers and Radio Control Receivers Disk Drives Mobile Phones GENERAL DESCRIPTION The ADP3607 is a 50 mA regulated output switched capacitor voltage doubler. It provides a regulated output voltage with minimum voltage loss and requires a minimum number of ex- ternal components. In addition, the ADP3607 does not require the use of an inductor. The internal oscillator of the ADP3607 runs at 500 kHz nomi- nal frequency, which produces an output switching frequency of 250 kHz. This allows for the use of smaller charge pump and filter capacitors. The ADP3607 provides an accuracy of ±5% with a typical shut- down current of 150 µA. It can also operate from a single posi- tive input voltage as low as 3 V. The ADP3607 is offered with the regulation fixed at 5 V, or adjustable via external resistors over a 3 V to 9 V range. |
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