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PDF G5723B Data sheet ( Hoja de datos )
| Número de pieza | G5723B | |
| Descripción | 1A Synchronous Buck Converter | |
| Fabricantes | Global Mixed-mode Technology | |
| Logotipo |  |
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Global Mixed-mode Technology
1.4MHz 1A Synchronous
600mA LDO Regulator
Buck
G5723B
Converter with
Features
Buck Converter
High Efficiency: Up to 93%
Low Quiescent Current: Only 50µA During Op-
eration
Internal Soft Start Function
1A Output Current
2.5V to 6V Input Voltage Range
1.4MHz Switching Frequency
No Schottky Diode Required
100% Duty Cycle in Dropout Operation
0.6V Reference Allows Low Output Voltages
<1µA Shutdown Current
Current Mode Operation for Excellent Line and
Load Transient Response
LDO Regulator
Dropout voltage typically 0.65V @ IO = 600mA
Output current in excess of 600mA
Output voltage accuracy ±2%
Quiescent current, typically 0.3mA
Internal short circuit current limit
Internal over temperature protection
Applications
Digital Still and Video Cameras
MP3 Players
Portable Instruments
General Description
The G5723B consists of a synchronous step-down
DC/DC converter and a LDO regulator. The DC/DC
converter is operated on current mode architecture.
Switching frequency is set at 1.4MHz allowing the use
of small surface mount inductor and capacitor. The
internal synchronous switches increase efficiency and
eliminate the need for external Schottky diode.
Ordering Information
ORDER
NUMBER
G5723B-33F11U
G5723B-33F61U
Note:F1: SOP-8 (FD)
1: Bonding Code
U: Tape & Reel
MARKING
G5723B-33
G5723B-33
F6: MSOP-10 (FD)
Pin Configuration
VOLTAGE
3.3V
3.3V
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
PACKAGE
(Green)
SOP-8 (FD)
MSOP-10 (FD)
Typical Application Circuit
G5723B
G5723B
EN1 1
AGND 2
FB1 3
AGND 4
9. PGND
Thermal
Pad
8 LX
EN1 1
7 IN1 AGND
FB1
6 OUT2
AGND
2
3
4
5 IN2
NC 5
Thermal
Pad
10 LX
9 PGND
8 IN1
7 OUT2
6 IN2
SOP-8 (FD)
MSOP-10 (FD)
Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
VIN
5V
CIN1
2.2µF
CIN2
1µF
R1
VOUT1 = 0.6V × (1+ R2 )
G5723B
IN1 LX
EN1
FB1
IN2
2.2µH
CFB* (option)
R1
R2 18K
18K
OUT2
AGND PGND
VOUT2
COUT2
4.7µF
VOUT1
1.2V
1A
COUT1
10µF
Ver: 0.1
Aug 23, 2012
TEL: 886-3-5788833
http://www.gmt.com.tw
1
1 page | ||
| Páginas | Total 1 Páginas | |
| PDF Descargar | [ Datasheet G5723B.PDF ] | |
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