LOW
VOLTAGE MULTI-MODE DC-DC CONVERTER
January 30, 1998
SC1630
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.
semtech.
com
DESCRIPTION
The SC1630 is a DC-DC converter designed to drive an external power switch for more flexibility, especially in higher
voltage and larger power applications.
Typically six components are required to set up a step-up configuration easily achieving an efficiency beyond 80%.
A few more components are required to set up a step down configuration delivering 4A load current with 83% typical efficiency, 86% at 2A load, and 300µA quiescent current.
The output
voltage can be internally set to 5V or externally set to an arbitrary value below breakdown
voltage of the...