|
|
PDF G5728B Data sheet ( Hoja de datos )
| Número de pieza | G5728B | |
| Descripción | 1.4MHz 1A Synchronous Step-Down Regulator | |
| Fabricantes | Global Mixed-mode Technology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de G5728B (archivo pdf) en la parte inferior de esta página. Total 2 Páginas | ||
|
No Preview Available !
Global Mixed-mode Technology
G5728B
1.4MHz 1A Synchronous Step-Down Regulator
Features
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
Over Temperature Protected
RoHS Compliant
General Description
The G5728B is a high efficiency monolithic synchro-
nous buck regulator using a constant frequency, cur-
rent mode architecture. Supply current during opera-
tion is only 50µA and drops to <1µA in shutdown. The
2.5V to 6V input voltage range makes the G5728B
ideally suited for single Li-Ion battery-powered applica-
tions. 100% duty cycle provides low dropout operation,
extending battery run time in portable systems.
Switching frequency is internally set at 1.4MHz, allow-
ing the use of small surface mount inductors and ca-
pacitors. The internal synchronous switch increase
efficiency and eliminates the need for an external
Schottky diode. Built-in soft start function eliminates
in-rush current that could damage the system.
Applications
Cellular Telephones
Personal Information Appliances
Microprocessors and DSP Core Supplies
Wireless and DSL Modems
Digital Still and Video Cameras
MP3 Players
Portable Instruments
Ordering Information
ORDER
NUMBER
MARKING
OUTPUT
VOLTAGE (V)
G5728BT11U
578Bx
Adjustable
G5728BTO1U
578Bx
Adjustable
G5728B-12TO1U
578Dx
1.2
G5728BU51D
578B
Note: T1: SOT-23-5 TO:TSOT-23-5 U5:WDFN2X2-6
1: Bonding Code
U&D: Tape & Reel
Adjustable
TEMP.
RANGE
-40°C~ +85°C
-40°C~ +85°C
-40°C~ +85°C
-40°C~ +85°C
PACKAGE
(Green)
SOT-23-5
TSOT-23-5
TSOT-23-5
WDFN2X2-6
Pin Configuration
Typical Application Circuit
EN 1
GND 2
G5728B
5 VFB VFB 1
GND 2
G5728B
7
GND
6 EN
5 LX
LX 3
4 VIN VIN 3
4 GND
SOT-23-5/TSOT-23-5
WDFN2X2-6
VIN
4~6V
G5728B
4
VIN
3
LX
CIN
2.2µF
CER
1 EN
VOUT =
0.6V
×
(1+
R1
R2
)
VFB
GND
2
5
2.2µH
CFB (option)
R1
R2* 82k
18k
* R2≦20kΩ for stability consideration.
VOUT
3.3V
300mA
COUT
10µF
CER
Ver: 0.7
Jul 12, 2013
TEL: 886-3-5788833
http://www.gmt.com.tw
1
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet G5728B.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| G5728 | 1MHz 1A Synchronous Step-Down Regulator | Global Mixed-mode Technology |
| G5728B | 1.4MHz 1A Synchronous Step-Down Regulator | Global Mixed-mode Technology |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |