AAT1160 Datasheet, PDF (1/14 Pages) Advanced Analog Technology, Inc. – Step Up Current Mode PWM Converter with 4+1 Operational Amplifiers

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 V_GAMMA with Output Current:
+30mA (MAX)
z One channel V_COM with Output Current:
+100mA (MAX)
z TSSOP-20 Package Available
Pin Configuration
(Top View)
SW 1
20 GND1
V_DD
2
SHDN 3
19 GND
18 IN1
FREQ 4
17 EO
V_DD1
5
16 N.C
AAT1160
CIN+ 6
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 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 .
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.
GI3 9
12 GO3
GI4 10
11 GO4
TSSOP-20 PACKAGE
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– Advanced Analog Technology, Inc. –
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