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SC1631

Semtech Corporation
Part Number SC1631
Manufacturer Semtech Corporation
Description LOW VOLTAGE STEP-UP DC-DC CONVERTER
Published Apr 8, 2005
Detailed Description LOW VOLTAGE STEP-UP DC-DC CONVERTER January 29, 1998 SC1631 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.c...
Datasheet PDF File SC1631 PDF File

SC1631
SC1631

Overview
LOW VOLTAGE STEP-UP DC-DC CONVERTER January 29, 1998 SC1631 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.
semtech.
com DESCRIPTION The SC1631 is a high efficiency step up DC-DC converter.
Only four external components are required to deliver a fixed voltage of 3V, 3.
3V, or 5V.
Efficiency beyond 87% can be easily achieved at 100mA load with 2.
2V to 3V input voltages.
A logic-controlled shutdown mode is provided for power saving.
Switch current limit can be programmed with a resistor.
The low battery detector can be configured as a linear regulator or a burst mode controller providing extremely low supply current operation.
A switching rate of 120kHz reduces the inductor size inductors of 25µH to 50µH are recommended for most applications.
FEATURES • High efficiency 90% • Power-saving shutdown mode (7µA typical) • Internal 2A switch • 120kHz switching rate • Adjustable switch current limit • On-chip low battery detector APPLICATIONS • Palmtop and notebook computers • Pocket organiz...


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