PWM Converter. AAT1160 Datasheet

AAT1160 Converter. Datasheet pdf. Equivalent

Part AAT1160
Description Step Up Current Mode PWM Converter
Feature www.DataSheet4U.com Advanced Analog Technology, Inc. AAT1160 Product information presented is curre.
Manufacture AAT
Datasheet
Download AAT1160 Datasheet




AAT1160
www.DataSheet4U.com
Advanced Analog Technology, Inc.
AAT1160
Product information presented is current as of publication date. Details are subject to change without notice.
Step Up Current Mode PWM Converter with
4+1 Operational Amplifiers
Features
z Built in 1.6A, 0.23 Switching NMOS
z Fault and Thermal Protection
z Internal Soft-Start Function
z Selectable Frequency 600 kHz or 1.25MHz
z Low Dissipation Current :
Typical 1.6mA in Operation
z Four Channels VGAMMA with Output Current:
+30mA (MAX)
z One channel VCOM with Output Current:
+100mA (MAX)
z TSSOP-20 Package Available
Pin Configuration
(Top View)
SW 1
20 GND1
VDD
SHDN
2
3
19 GND
18 IN1
FREQ 4
17 EO
VDD1
CIN+
5 16 N.C
6 AAT1160 15 COUT
GI1 7
14 GO1
GI2 8
13 GO2
General Description
The AAT1160 is a step up current mode PWM
converter that provides a one-channel step-up PWM
controller, four Gamma buffers, and one VCOM
buffer. Internal soft-start function can efficiently
prevent inrush current when the power is on.
This PWM controller consists of an on-chip voltage
reference, error amplifier, current sense, pulse width
modulation controller, under-voltage lockout
protection, thermal detect, soft-start, and fault
protection circuits.
The AAT1160 contains 4+1 operational amplifiers:
GO1, GO2, GO3, and GO4 for gamma corrections
and COUT for VCOM .
VCOM and VGAMMA are designed to increase
driving capability for thin film transistor liquid
crystal display (TFT LCD). Each buffer is capable
of driving heavy load and offering fast current
loading ( VCOM : ± 100mA , and VGAMMA : ± 30mA ).
With minimal external components, the AAT1160
offers a simple and economical power management
solution for TFT LCD panels.
GI3 9
12 GO3
GI4 10
11 GO4
TSSOP-20 PACKAGE
––
Advanced Analog Technology, Inc.
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AAT1160
www.DataSheet4U.com
Advanced Analog Technology, Inc.
Pin Description
PIN
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
NAME I/O
DESCRIPTION
SW
VDD
SHDN
FREQ
VDD1
CIN+
GI1
GI2
GI3
GI4
GO4
GO3
GO2
GO1
COUT
N.C
EO
IN1
GND
GND1
O High Voltage Switch Output
- Power Supply
I Shutdown Control Pin; High for Enable
I Frequency Select Pin
- High Voltage Power Supply
I VCOM Buffer Input
I Gamma Buffer 1 Input
I Gamma Buffer 2 Input
I Gamma Buffer 3 Input
I Gamma Buffer 4 Input
O Gamma Buffer 4 Output
O Gamma Buffer 3 Output
O Gamma Buffer 2 Output
O Gamma Buffer 1 Output
O VCOM Buffer Output
-
O PWM Error Amplifier Output Pin
I Inverting Input Pin of PWM Error Amplifier
- Ground
- Ground
AAT1160
––
Advanced Analog Technology, Inc.
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