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AAT1118B PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AAT1118B
기능 ADJUSTABLE TRIPLE-CHANNEL TFT LCD DC-DC CONVERTER
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AAT1118B 데이터시트, 핀배열, 회로
Details are subject to change without notice.
AAT1118/A/B
ADJUSTABLE TRIPLE-CHANNEL TFT LCD
DC-DC CONVERTER
Features
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 40V
Power Good Output
TSSOP-16 Package
Pin Configuration
(Top View)
PGO
IN1
EO
VDD
GND
VREF
IN3
IN2
1 16
2 15
3 14
AAT1118/A/B
4 13
5 12
6 11
7 10
89
GND1
SW
GND2
VDD2 / VCH3
OUT3
VDD1
OUT2
SHDN
(TSSOP-16 Package)
General Description
The AAT1118/A/B 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 (Note 1) could switch on or off TFT
gate.
With the minimal external components, the
AAT1118/A/B offers a simple and economical
solution for TFT LCD power.
Note 1: Please refer to page 13 and 14 for VP3 and
VP2.
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AAT1118B pdf, 반도체, 판매, 대치품
Electrical Characteristics, VDD= 3.3V, VDDH= 10V
AAT1118/A/B
Operating Power
PARAMETER
SYMBOL TEST CONDITION
Input Supply Voltage Range
VDD Under Voltage Lockout
VDD
VUVLO
Falling
Rising
Regulated Output Voltage
Range
VP1
Quiescent Current
I VDD
VIN1=1.3V, not switching
VIN1=1.1V, switching
Shutdown Current
I SHDN
VSHDN =GND
Thermal Shutdown
MIN TYP MAX UNIT
2.6 5.5 V
2.1 2.2 2.3
2.3 2.4 2.5
V
V
6 14 V
0.5 0.8 mA
3 6 mA
0.1 10.0 A
160 C
Reference Voltage
PARAMETER
Reference Voltage
Line Regulation
Load Regulation
SYMBOL TEST CONDITION
VREF
VRI
IVref = 100µA
IVref = 100µA,
VDD =2.5V~5V
VRO IVref = 0~100µA
MIN TYP MAX UNIT
1.238 1.250 1.262 V
- 2 5 mV
- 1 5 mV
EA (Error Amplifier)
PARAMETER
SYMBOL TEST CONDITION MIN TYP MAX UNIT
Feedback Voltage
Input Bias Current
Feedback-Voltage Line
Regulation
Transconductance
Voltage Gain
Fault Detect Trigger Voltage
VIN1
I B1
VRI
gm
AV
VFI
VEO =
VIN1=1.24V
VEO =
VDD
I=5 A
1.238 1.250 1.262 V
0 40 nA
0.05 0.15 % /V
70 105 240 A /V
1,500
V /V
1.07 1.10 1.14 V
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AAT1118B 전자부품, 판매, 대치품
Electrical Characteristics, VDD= 3.3V, VDDH= 10V
Charge Pump Regulator Characteristics
PARAMETER
VDD1 Input Supply
Range
VDD2 Input Supply
Range
SYMBOL
VDD1
VDD2
TEST CONDITION
IN2 Threshold Voltage
IN2
IN3 Threshold Voltage
IN3
IN2 Input Bias Current
IN3 Input Bias Current
Charge Pump Frequency
OUT2 Switch R-on
OUT3 Switch R-on
Continuous Output
Current
I B2
I B3
f OSCP
R ONP2
R ONN2
R ONP3
R ONN3
I OUT
VIN2= 0.05V
V IN3= 1.5V
AAT1118/A/B
MIN
6
TYP
MAX UNIT
15 V
6 15 V
50 0
50 mV
1.20 1.25 1.30 V
50 50 nA
50 50 nA
540 640 740 kHz
3 20
3 20
3 20
3 20
30
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