器件名称: AAT1160
功能描述: Step Up Current Mode PWM Converter with 4+1 Operational Amplifiers
文件大小: 372.38KB 共14页
简 介: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 z z z z z z z Built in 1.6A, 0.23[ Switching NMOS Fault and Thermal Protection Internal Soft-Start Function Selectable FrequencyG 600 kHz or 1.25MHz Low Dissipation Current : Typical 1.6mA in Operation Four Channels VGAMMA with Output Current: +30mA (MAX) One channel VCOM 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 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 .
20 GND1 19 18 17 16 GND IN1 EO N.C
Pin Configuration
(Top View)
SW
VDD
1 2 3 4 5 6 7 8 9 10
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 m……
