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SP6642UEB Datasheet

  • SP6642UEB

  • Application Note:High Current Output

  • 4頁(yè)

  • SIPEX

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SP6642/3
Application Note:
High Current Output
s
40mA Output Current for the SP6642/3
Single Cell to 2V to 5V Converter
SP6642/3 40mA Output Application: Block Diagram
s
High Efficiency: 81%
s
Twice the Output Current as the
Pin-to-Pin Compatible MAX1642/3
Single
Cell
47碌H
SP6642/3
DC/DC Converter
2 to 5V
Pagers,
Remotes,
Medical
Devices
s
0.75V Start-up Voltage
Description
The
SP6642/6643
devices are high-efficiency, low-power step-up DC-DC converters for +1V
inputs ideal for single alkaline cell applications such as pagers, remote controls, pointing
devices and other low-power portable products. This application note is for users like medical
devices, emergency lighting and others who need twice the output current than the datasheet
specified values for the SP6642/6643. Typically specified at 20mA for 3.3V out with a 1.2V
input, the SP6642 can actually output double the current if a lower value of inductor is selected.
SP6642/6643 Applications Schematic 鈥?47碌H Inductor
SP6642/6643APN/02
SP6642/6643 Application Note
漏 Copyright 2000 Sipex Corporation
1

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