Advanced Analog Technology, Inc.
May 2008
PIN DESCRIPTION
PIN NO.
QFN-32
NAME
I/O
DESCRIPTION
1
VOUT3
VREF
GND
GND1
VO1
VI1–
VI1+
VO2
VI2–
VI2+
GND2
VI3+
VO3
VDD1
VI4+
VI4–
VO4
VI5+
VI5–
VO5
SW
-
O
-
Channel 3 Output Voltage (gate high voltage input)
Internal Reference Voltage Output
Ground
2
3
4
-
SW MOS Ground
5
O
I
Operational Amplifier 1 Output
Operational Amplifier 1 Negative Input
Operational Amplifier 1 Positive Input
Operational Amplifier 2 Output
Operational Amplifier 2 Negative Input
Operational Amplifier 2 Positive Input
Ground for Operational Amplifiers
VCOM Operational Amplifier Positive Input
VCOM Operational Amplifier Output
High Voltage Power Supply Input
Operational Amplifier 4 Positive Input
Operational Amplifier 4 Negative Input
Operational Amplifier 4 Output
Operational Amplifier 5 Positive Input
Operational Amplifier 5 Negative Input
Operational Amplifier 5 Output
Main PWM Switching Pin
6
7
I
8
O
I
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
I
-
I
I
-
I
I
O
I
I
O
-
VDD
IN1
-
Power Supply Input
I
Main PWM Feedback Pin
EO
O
I
Main PWM Error Amplifier Output
Positive Charge Pump Feedback Pin
Positive Charge Pump Output
Negative Charge Pump Feedback Pin
IN3
OUT3
IN2
O
I
–
–
–
Advanced Analog Technology, Inc. –
Version 1.00
Page 9 of 22
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
