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
Built in 1.6A, 0.23Ω Switching NMOS
Fault and Thermal Protection
Internal Soft-Start Function
Selectable Frequency：600 kHz or 1.25MHz
Low Dissipation Current :
Typical
1.6mA
in Operation
Four Channels V
GAMMA
with Output Current:
+30mA (MAX)
One channel V
COM
with Output Current:
+100mA (MAX)
TSSOP-20 Package Available
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 V
COM
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 V
COM
.
20 GND1
19
18
17
16
GND
IN1
EO
N.C
Pin Configuration
(Top View)
SW
V
DD
1
2
3
4
5
6
7
8
9
10
V
COM
and V
GAMMA
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 ( V
COM
:
±
100mA
, and V
GAMMA
:
±
30mA
).
With minimal external components, the AAT1160
offers a simple and economical power management
solution for TFT LCD panels.
SHDN
FREQ
V
DD1
CIN+
GI1
GI2
GI3
GI4
AAT1160
15 COUT
14
13
12
11
GO1
GO2
GO3
GO4
TSSOP-20 PACKAGE
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台灣類比科技股�½有限公司
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Advanced Analog Technology, Inc
.
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AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
