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PDF G5561A Data sheet ( Hoja de datos )
| Número de pieza | G5561A | |
| Descripción | Quad-Output TFT LCD Bias DC-DC Converter | |
| Fabricantes | Global Mixed-mode Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de G5561A (archivo pdf) en la parte inferior de esta página. Total 2 Páginas | ||
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Global Mixed-mode Technology Inc.
G5561A
Quad-Output TFT LCD Bias DC-DC Converter
Features
8V to 14V Input Voltage Range
VS Output Voltage Range up to 19 V
1% Accurate Boost Converter with 3A Switch
Current
1.5% Accurate 2.3A Step-Down Converter
500kHz/750kHz Fixed Switching Frequency
150mA Negative Charge Pump Driver for VGL
150mA Positive Charge Pump Driver for VGH
Adjustable Sequencing for VGL, VGH
Gate Drive Signal to Drive External MOSFET
Internal and Adjustable Soft Start
Cycle-by-Cycle Over Current Protection
Short-Circuit Protection
Overvoltage Protection
Thermal Shutdown
Available in TSSOP-28 Package
Applications
TFT LCD Displays
General Description
The G5561A DC-DC converter provides regulated volt-
ages required by thin-film transistor (TFT) liquid crystal
displays (LCD) panels in TSSOP package. One step-up
converter, one step-down converter, and two charge
pumps convert the 8V to 14V input voltage into four
output voltages. These features complete the power-
supply requirements of large screen LCD panels. The
step-up converter provides source voltages VS and the
step-down converter provides logic voltage for the sys-
tem. The dual charge pumps independently generate
adjustable regulated output voltages VGL and VGH to
bias the LCD. These four blocks operate with a fixed
switching frequency of 500kHz or 750kHz.
Both step-up and step-down converters operate in
asynchronous switch mode. Current mode control pro-
vides fast transient response and eases loop stabiliza-
tion. Fault protection includes cycle-by-cycle current
limit, thermal shutdown, overvoltage protection of the
step-up converter and short-circuit protection of the
step-down converter.
Current mode control is used for both charge pumps to
regulate its output voltage, which minimizes output
ripple and capacitor sizes.
The G5561A is available in an 28-pin TSSOP package.
Ordering Information
ORDER
NUMBER
G5561AF41U
Note: F4: TSSP-28 (FD)
1: Bonding Code
U: Tape & Reel
Pin Configuration
Ver: 0.2
Mar 22, 2011
MARKING
G5561A
TEMP.
RANGE
-40°C~ +85°C
FB
COMP
OS
SW
SW
PGND
PGND
SUP
EN2
DRP
DRN
FREQ
FBN
FBP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
G5561A
Thermal
Pad
28 SS
27 GD
26 DLY2
25 DLY1
24 REF
23 GND
22 AVIN
21 VINB
20 VINB
19 NC
18 SWB
17 NC
16 EN1
15 FBB
TSSOP-28 (FD)
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
1
PACKAGE
(Green)
TSSOP-28 (FD)
TEL: 886-3-5788833
http://www.gmt.com.tw
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet G5561A.PDF ] | |
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