SGM6130 Datasheet, PDF (1/14 Pages) SG Micro Corp – Step-Down Converter

SGM6130
3A, 28.5V, 385kHz Step-Down Converter
GENERAL DESCRIPTION
The SGM6130 is a current-mode step-down regulator
with an internal power MOSFET. This device achieves
3A continuous output current over a wide input supply
range from 4.5V to 28.5V with excellent load and line
regulations. The switching frequency of SGM6130 is
385kHz and current mode operation provides fast
transient response and eases loop stabilization.
The SGM6130 is highly efficient with peak efficiency at
94% when in operation. In shutdown mode the regulator
draws less than 18µA of supply current. Protection
features include cycle-by-cycle current limit and thermal
shutdown. The device also includes an internal soft-start
and an external adjustable soft-start function to limit the
inrush current and prevent the overshoot of output
voltage.
The SGM6130 is available in Green SOIC-8 (Exposed
Pad) package and requires a minimum number of readily
available external components to complete a 3A step-
down DC/DC converter solution.
FEATURES
● 3A Output Current
● High Efficiency: Up to 94%
● 4.5V to 28.5V Input Voltage Range
● < 18µA Shutdown Supply Current
● 100mΩ Internal Power MOSFET Switch
● Fixed 385kHz Switching Frequency
● Output Adjustable from 0.8V to 25V
● Cycle-by-Cycle Current Limit Protection
● Thermal Shutdown Protection
● Under-Voltage Lockout
● Stable with Low ESR Ceramic Capacitors
● -40℃ to +85℃ Operating Temperature Range
● Available in Green SOIC-8 (Exposed Pad) Package
APPLICATIONS
Distributed Power Systems
Battery Chargers
Flat Panel TVs
Set-Top Boxes
Pre-Regulator for Linear Regulators
Cigarette Lighter Powered Devices
DVD/PVR Devices
TYPICAL APPLICATION
INPUT
4.5V to 28.5V
ENABLE
CIN
22μF
R4
10Ω or shorted
C5
10nF
IN
EN
BS
SW
SGM6130
SS
GND
FB
COMP
C4
0.1μF
C6
optional
C3
5.6nF
R3
6.49kΩ
L
10μH
R1
33kΩ
D1
B340A
R2
10.5kΩ
OUTPUT
3.3V/3A
COUT
47μF
SG Micro Corp
www.sg-micro.com
REV. A. 3