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PDF G5517 Data sheet ( Hoja de datos )

Número de pieza G5517
Descripción Integrated Power Solution
Fabricantes Global Mixed-mode Technology 
Logotipo Global Mixed-mode Technology Logotipo



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No Preview Available ! G5517 Hoja de datos, Descripción, Manual

Global Mixed-mode Technology Inc.
G5517
Integrated Power Solution for TFT-LCD
Features
„ 2.5V to 5.5V Input Supply Range
„ 1.2MHz Current-Mode Step-Up Converter
„ Built-In 18V, 3A 0.2Ω n-Channel MOSFET
„ Charge Pumps for VGON and VGOFF
„ High Voltage Switch with Adjustable Delay
„ Thermal Overload Protection
„ TQFN4X4-24 Package
Applications
„ LCD Monitor Panels
„ Notebook Computer Displays
„ LCD TVs
General Description
The G5517 includes a step-up converter, two charge
pumps, and a high current operational amplifier for TFT
LCD. Also included are a logic-controlled high-voltage
switch with adjustable delay and an open drain output
reset comparator.
The step-up DC/DC converter provides the regulated
power supply for the panel source driver IC. The con-
verter is a high performance current-mode regulator
with operating frequency at 1.2MHz. It also provides
fast transient response and high efficiency.
The charge pumps in G5517 regulate TFT gate-on
and gate-off power supplies. The power-on sequence
is controlled by the control logic. The blanking time for
reset function is 163ms (typ.) from startup. The RSTIN
begins to detect voltage below 1.25V afterward. For
more detail information, please refer to the timing
chart.
G5517 is available in TQFN4X4-24 package
Ordering Information
ORDER
NUMBER
G5517R51U
Note: R5: TQFN4X4-24
1: Bonding Code
U: Tape & Reel
Pin Configuration
MARKING
5517
TEMP.
RANGE
-40°C to 85°C
PACKAGE
(Green)
TQFN4X4-24
POS
NEG
OUT
BGND
SUP
DRVP
1
2
3
4
5
6
Thermal
Pad
18 PGND
17 FB
16 COMP
15 RSTIN
14 AGND
13 VDD
G5517 TQFN4X4-24
Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
Ver: 1.2
Jan 17, 2011
TEL: 886-3-5788833
http://www.gmt.com.tw
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