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Datasheet G5754 PDF ( 特性, スペック, ピン接続図 )

部品番号 G5754
部品説明 2A Step-down DC/DC
メーカ Global Mixed-mode Technology
ロゴ Global Mixed-mode Technology ロゴ 
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G5754 Datasheet, G5754 PDF,ピン配置, 機能
Global Mixed-mode Technology Inc. G5754/G5754A
2A Step-down DC/DC
Features
„ 2A Output Current
„ 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
„ 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
„ Distributed Power Systems
„ Pre-Regulator for Linear Regulators
General Description
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.
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.
The G5754/G5754A requires a minimum number of
readily available standard external components. It is
available in a SOP-8 package.
Ordering Information
ORDER
NUMBER
G5754P11U
G5754AP11U
Note: P1: SOP-8
1: Bonding Code
U : Tape & Reel
MARKING
G5754
G5754A
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
PACKAGE
(Green)
SOP-8
SOP-8
Pin Configuration
G5754/G5754A
SS / NC 1
8 EN
BS 2
7 COMP
IN 3
6 FB
LX 4
5 GND
SOP-8
Typical Application Circuit
INPUT
12V
OFF ON
C1
10µF
25V
C5
10nF
3
8 IN
EN
2
BS
LX
4
1
G5754
SS / NC
FB 6
L1
15µH
D1 R1
10.5kΩ
C4 10nF /
Open not used
GND
5
C6
OPEN
COMP
7
C3
4.7nF
R3
7.5kΩ
1%
R2
10kΩ
1%
OUTPUT
2.5V/2A
C2
22µF/6.3V
CERAMIC
INPUT
12V
OFF ON
C1
10µF
25V
C4 10nF /
Open not used
C5
10nF
3
8 IN
EN
2
BS
LX
4
1
G5754A
SS / NC
FB
6
GND
5
COMP
7
C6
OPEN
C3
4.7nF
R3
7.5kΩ
L1
15µH
D1 R1
17.2kΩ
1%
R2
10kΩ
1%
OUTPUT
2.5V/2A
C2
22µF/6.3V
CERAMIC
Ver: 0.2
Jul 26, 2010
TEL: 886-3-5788833
http://www.gmt.com.tw
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