G5755 [GMT]
3A, 1.5MHz, 28V Step-down DC/DC;
| 型号： | G5755 |
| 厂家： | 
GLOBAL MIXED-MODE TECHNOLOGY INC |
| 描述： | 3A, 1.5MHz, 28V Step-down DC/DC |
| 文件： | 总1页 (文件大小：84K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
G5755
Global Mixed-mode Technology
3A, 1.5MHz, 28V Step-down DC/DC
Features
General Description
3A Output Current
The G5755 is a monolithic step-down switch mode
regulator with a built in internal power MOSFET. It
achieves 3A continuous output current over a wide input
supply range with excellent load and line regulation.
Wide 4.5V to 28V Operating Input Range
Programmable Switching Frequency from
100kHz to 1.5MHz
Internal Soft-Start
Cycle-by-Cycle Over Current Protection
Ceramic Capacitor Stable
High-Efficiency Pulse Skipping Mode for Light
Load
The wide 4.5V to 28V input range accommodates a
variety of step-down applications, including those in an
automotive input environment. A 180µA operational
quiescent current allows use in battery-powered applica-
tions.
Available in DIP-8, SOP-8 (FD) and TDFN3X3-8
Package
High power conversion efficiency over a wide load
range is achieved by scaling down the switching fre-
quency at light load condition to reduce the switching
and gate driving losses.
Applications
High Voltage Power Conversion
Automotive Systems
Industrial Power Systems
Distributed Power Systems
Battery Powered Systems
The frequency foldback helps prevent inductor current
runaway during startup and thermal shutdown provides
reliable, fault tolerant operation.
Ordering Information
By switching at 1.5MHz, the G5755 is able to prevent
EMI (ELECTROMAGNETIC Interference) noise prob-
lems, such as those found in AM radio and ADSL ap-
plications.
ORDER
TEMP.
PACKAGE
(Green)
DIP-8
MARKING
NUMBER
G5755Z31U
G5755F11U
G5755RD1U
RANGE
G5755
G5755
5755
-40°C to +85°C
The G5755 requires a minimum number of readily
available standard external components. It is available
in a DIP-8, SOP-8 (FD) and TDFN3X3-8 package.
-40°C to +85°C SOP-8 (FD)
-40°C to +85°C TDFN3X3-8
Note: Z3: DIP-8 F1: SOP-8 (FD) RD: TDFN3X3-8
1: Bonding Code
U : Tape & Reel
Pin Configuration
Typical Application Circuit
G5755
8
7
6
5
BS
LX
1
2
3
4
C4
100nF
IN
EN
INPUT
C1
R5
7
8
10µF
50V
COMP
FREQ
GND
L1
10µH
100k
Ω
2
BS
IN
1
4
OUTPUT
3.3V
EN
LX
FB
FB
R1
124kΩ
R6
24.9kΩ
D1
G5755
6
DIP-8
FREQ
COMP
GND
5
R4
200kΩ
G5755
G5755
3
R2
40.2 kΩ
C2
22µF
6.3V
C3
220pF
8
7
6
5
BS
LX
1
2
3
4
C6
NS
BS
LX
8
1
R3
IN
68.1kΩ
EN
IN
7
6
EN
COMP
FB
2
3
4
Thermal
Pad
Thermal
Pad
COMP
FREQ
GND
FREQ
GND
5
FB
SOP-8 (FD)
TDFN3X3-8
Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.8
May 27, 2013
1
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