SC2612E Datasheet, PDF (1/11 Pages) Semtech Corporation – 500kHz Step-Down DC/DC Converter

SC2612E
500kHz Step-Down DC/DC Converter
POWER MANAGEMENT
Description
The SC2612E is a voltage mode switcher designed for
low cost, “point of use” voltage conversion. SC2612E is
available with fixed switching frequencies of 500kHz.
The SC2612E has soft start and enable functions and is
short circuit protected. The output of the switcher may
be set anywhere between 0.8V and 75% of Vin. Short
circuit protection is disabled during start-up to allow the
output capacitors time to fully charge.
Features
u Operating frequency of 500kHz
u Input supply of 4.5V to 15V
u 0.5A Drive current for up to 10A output
u Output voltages down to 0.8V
u Overcurrent protection and soft start
u SO-8 package
Applications
u Graphics IC Power supplies
u Embedded, low cost, high efficiency converters
Typical Application Circuit
5V IN
R1
C5
C7
C9
R9
12V IN
C10
C1
C2
U2
2 _{VCC BST} 6
7 _{COMP DH} 5 ^R2
8 _{SS/EN DL} 3 ^R3
4 _{GND FB} 1
SC2612E
Q2
L1
Q3
C3
1.5V OUT
R6
R10
Revision: October 12, 2004
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