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PDF G5126 Data sheet ( Hoja de datos )
| Número de pieza | G5126 | |
| Descripción | Boost DC/DC White-LEDs Drive | |
| Fabricantes | Global Mixed-mode Technology | |
| Logotipo |  |
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Global Mixed-mode Technology
G5126
High Efficiency, Constant Current, Boost DC/DC
White-LEDs Drive
Features
Operating Voltage：2.7V to 5.5V
High Operating Frequency：1MHz
High Output Voltage：28V
Shutdown Current：<1µA
Over-Voltage Protection
Digital Dimming Control
Built-in Cycle-by-Cycle Current-Limiting
Soft-Start Function
0.2V Low Reference Voltage
SOT-23-6 & TDFN2X2-8 Package
Applications
LED Module
Compact Back Light Module
Constant Current Source
General Description
The G5126 boost converter contains a 0.7Ω internal
switch. The IC operates at constant frequency 1MHz,
allowing the use of tiny, low cost and low height in-
ductors and capacitors. The IC operates from a 2.7V
to 5.5V supply voltage. High inrush current at start-up
is eliminated using the soft-start function. Constant
frequency current mode PWM architecture results in
low, predictable output noise. The G5126 includes
cycle-by-cycle 850mA current limiting to maximum
inductor current and over-temperature protection cir-
cuit. The over-voltage protection will be enabled when
VOUT exceeds 28V. The current of LED is set by a
resistor connected between FB and GND. The G5126
is available in SOT-23-6 & TDFN2X2-8 package.
Ordering Information
ORDER
NUMBER
G5126TB1U
G5126RC1U
Note: TB: SOT-23-6 RC: TDFN2X2-8
1 : Bonding Code
U: Tape & Reel
MARKING
5126x
5126
TEMP.
RANGE
-40°C to 85°C
-40°C to 85°C
PACKAGE
(Green)
SOT-23-6
TDFN2X2-8
Pin Configuration
Typical Application Circuit
LX 1
G5126
GND 2
FB 3
G963
6 IN
VCC
NC
5 OVP
OVP
4 EN
EN
1
2
3
4
G5126
Thermal
Pad
8 LX
7 PGND
6 VSS
5 FB
SOT-23-6
TDFN2X2-8
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
VIN=2.7V to 5.5V
CIN
4.7µF
10µH
IN LX
OVP
G5126
PWM Dimming
EN FB
GND
I=20mA
10
R1
COUT
1µF
Ver: 0.7
Mar 01, 2013
TEL: 886-3-5788833
http://www.gmt.com.tw
1
1 page | ||
| Páginas | Total 1 Páginas | |
| PDF Descargar | [ Datasheet G5126.PDF ] | |
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