Global Mixed-mode Technology Inc.
G5754/G5754A
2A Step-down DC/DC
Features
General Description
2A Output Current
The G5754/G5754A is a monolithic step-down switch
mode regulator with a built in internal power MOSFET. It
achieves 2A continuous output current over a wide input
supply range with excellent load and line regulation.
0.18Ω Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic Capaci-
tors
Up to 95% Efficiency
30µA Shutdown Mode
Fixed 380kHz Frequency
Thermal Shutdown
Current mode operation provides fast transient re-
sponse and eases loop stabilization.
Fault condition protection includes cycle-by-cycle cur-
rent limiting, output short circuit protection and thermal
shutdown. In shutdown mode the regulator draws
30µA of supply current. Programmable soft-start over-
writes the internal soft-start for various requirement of
output power up ramp and minimizes the inrush supply
current at initial startup.
Cycle-by-Cycle Over Current Protection
Wide 4.75V to 24V Operating Input Range
Output Adjustable from 1.22V to 21.6V(G5754)
Output Adjustable from 0.92V to 21.6V(G5754A)
Available in SOP-8 Package
Applications
PC Monitors
DSL Modems
The G5754/G5754A requires a minimum number of
readily available standard external components. It is
available in a SOP-8 package.
Distributed Power Systems
Pre-Regulator for Linear Regulators
Ordering Information
ORDER
NUMBER
G5754P11U
TEMP.
RANGE
PACKAGE
(Green)
SOP-8
MARKING
G5754
-40°C to +85°C
G5754AP11U
G5754A
-40°C to +85°C
SOP-8
Note: P1: SOP-8
1: Bonding Code
U : Tape & Reel
Pin Configuration
Typical Application Circuit
C5
10nF
INPUT
12V
C1
3
2
10µF
25V
L1
15µH
BS
IN
8
1
4
6
OUTPUT
2.5V/2A
EN
LX
OFF
ON
R1
10.5kΩ
D1
G5754
SS / NC
FB
COMP
1%
GND
5
C4 10nF
/
7
Open not used
C2
R2
10kΩ
1%
C3
22µF/6.3V
CERAMIC
4.7nF
G5754/G5754A
C6
R3
OPEN
7.5kΩ
1
2
3
4
8
7
6
5
EN
SS / NC
BS
COMP
FB
C5
10nF
IN
INPUT
12V
C1
10µF
25V
3
2
LX
GND
L1
15µH
BS
LX
IN
8
1
4
OUTPUT
2.5V/2A
EN
OFF
ON
SOP-8
R1
D1
G5754A
17.2kΩ
6
SS / NC
FB
1%
COMP
7
GND
5
C4 10nF
Open not used
/
C2
22µF/6.3V
CERAMIC
R2
C3
4.7nF
10kΩ
1%
C6
R3
OPEN
7.5kΩ
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.2
Jul 26, 2010
1