600kHz/200kHz
Step-Down DC/DC Converter
POWER MANAGEMENT
Description
The SC2612 is a voltage mode switcher designed for low
cost, “point of use” voltage conversion. SC2612 is avail-
able with fixed switching frequencies of 600kHz
(SC2612A) and 200kHz (SC2612C).
The SC2612 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.
SC2612A/C
Features
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Operating frequency of 600kHz or 200kHz
Input supply of 3V to 8V
0.5A Drive current for up to 10A output
Output voltages down to 0.8V
Overcurrent protection and soft start
MSOP-8 package
Applications
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Graphics IC Power supplies
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Embedded, low cost, high efficiency converters
Typical Application Circuit
12V IN
3.3V IN
R1
C10
C1
C2
U2
4
1
2
C5
C7
R9
C9
R10
5
VCC
BST
8
7
6
3
R2
R3
Q2
L1
1.5V OUT
Q3
R6
COMP DH
SS/EN
GND
DL
FB
SC2612
C3
August 18, 2004
1
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SEMTECH [ SEMTECH CORPORATION ]
