AAT1118 Advanced Analog Technology, Inc., AAT1118 Datasheet

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AAT1118

Manufacturer Part Number
AAT1118
Description
ADJUSTABLE TRIPLE-CHANNEL TFT LCD DC-DC CONVERTER
Manufacturer
Advanced Analog Technology, Inc.
Datasheet
Details are subject to change without notice.
Features
Pin Configuration
Built in 1.6A, 0.2 Switching NMOS
Fault and Thermal Protection
Internal Soft-Start Function
Internal Power Up Sequencing
Dual Adjustable Charge Pump Output
Positive Output to 40V
Negative Output to
Power Good Output
TSSOP-16 Package
(TSSOP-16 Package)
(Top View)
Advanced Analog Technology, Inc.
Advanced Analog Technology, Inc
40V
台灣類比科技股份有限公司
ADJUSTABLE TRIPLE-CHANNEL TFT LCD
Page 1 of 14
General Description
The AAT1118 is an adjustable triple-channel TFT
LCD DC-DC converter that provides one current
mode PWM, one positive charge pump and one
negative charge pump. Built-in functions include
soft-start and power up sequencing. When power is
turned on, soft-start avoids inrush current. Power up
sequencing feature provides compensation for LCD
panel to maintain a smooth voltage during a turn-on
cycle.
The DC-DC converter 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 circuit.
When the two charge pumps are in operation, the
output voltage would be doubled and the generated
VP3 and VP2 could switch on or off TFT gate.
With the minimal external components, the
AAT1118 offers a simple and economical solution
for TFT LCD power.
DC-DC CONVERTER
.
AAT1118
V 2.0011

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AAT1118 Summary of contents

Page 1

... Advanced Analog Technology, Inc – ADJUSTABLE TRIPLE-CHANNEL TFT LCD General Description The AAT1118 is an adjustable triple-channel TFT LCD DC-DC converter that provides one current mode PWM, one positive charge pump and one negative charge pump. Built-in functions include soft-start and power up sequencing. When power is turned on, soft-start avoids inrush current ...

Page 2

... High Voltage Power Supply Ground Switch Pin SW MOS Ground 台灣類比科技股份有限公司 Page AAT1118 TEMP. MARKING MARKING RANGE DESCRIPTION 1. Part Name AAT1118 -40 C ° Lot No. XXXXXX +85 C ° (6~9 digits) – – 2.0011 ...

Page 3

... Advanced Analog Technology, Inc – SYMBOL DDH storage P d 台灣類比科技股份有限公司 Page AAT1118 VALUE UNIT +0 +0 +0.3 DDH − ...

Page 4

... < < Δ I=5µ 台灣類比科技股份有限公司 Page AAT1118 MIN TYP MAX UNIT 2.6 5.5 2.1 2.2 2.3 2.3 2.4 2 0.5 0 0.1 10.0 160 MIN TYP MAX UNIT 1 ...

Page 5

... R I =1. =12V SWOFF SW SYMBOL TEST CONDITION HYS I PH 台灣類比科技股份有限公司 Page AAT1118 MIN TYP MAX UNIT 1,100 1,320 1,600 kHz MIN TYP MAX UNIT 1.1 1.6 2.1 A Ω ...

Page 6

... Advanced Analog Technology, Inc – = 3.3V 10V DD DDH SYMBOL TEST CONDITION t SS1 t SS2 t SS3 台灣類比科技股份有限公司 Page AAT1118 MIN TYP MAX UNIT 14 ms 3 1.05 1.10 1.15 V 0.08 0.13 0.18 V 1.05 1.10 1.15 V – ...

Page 7

... IN2 IN3 0.05V − IN2 1.5V − IN3 B3 OSCP ONP2 ONN2 ONP3 ONN3 OUT 台灣類比科技股份有限公司 Page AAT1118 MIN TYP MAX UNIT − 1.20 1.25 1. − ...

Page 8

... Power Up Sequence Power Up Sequence EN3 EN3 Fault Detect Fault Detect IN1 IN1 IN3 IN3 台灣類比科技股份有限公司 Page AAT1118 SHDN SHDN Thermal SHDN Thermal SHDN Control Control Driver Driver Logic Logic EN1 ...

Page 9

... Page AAT1118 100 200 300 400 500 50 100 150 200 250 300 350 – ...

Page 10

... Advanced Analog Technology, Inc – 4.5 5 5.5 台灣類比科技股份有限公司 Page AAT1118 – – 2.0011 18 20 ...

Page 11

... Advanced Analog Technology, Inc. Typical Operating Characteristics (Continued) (VIN = 3.3V, = +25°C, unless otherwise noted – Advanced Analog Technology, Inc – 台灣類比科技股份有限公司 Page AAT1118 – – 2.0011 ...

Page 12

... Advanced Analog Technology, Inc. Application Circuit AAT1118 – Advanced Analog Technology, Inc – 台灣類比科技股份有限公司 Page AAT1118 – – 2.0011 ...

Page 13

... 14ms Max. Max. 3.5ms PGO PGO – Advanced Analog Technology, Inc – 3.5ms 台灣類比科技股份有限公司 Page AAT1118 25V 25V – – 2.0011 ...

Page 14

... Page AAT1118 Max 0.047 0.006 0.041 0.011 ------ 0.2000 0.260 0.177 ------ 0.028 0.003 8˚ – – 2.0011 ...

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