Advanced Analog Technology, Inc.
AAT1401
Details are subject to change without notice.
FOUR-CHANNEL DIGITAL STILL CAMERA POWER SUPPLY
FEATURES
Complete PWM Power Control Circuitry
Input Voltage Range: 3.0V to 6.5V (CH1~CH4)
Low Start-Up Voltage: 1.4V (CH4)
Separate On/Off Control for CH1~CH4
Supports Synchronous Boost/Buck Rectification
(CH1)
Supports Synchronous Boost Rectification (CH4)
Supports Boost/Buck Conversion (CH2)
Supports Boost Conversion (CH3)
Supports White LED Driver (CH3)
Totem-Pole Output
Short Circuit Protection
Wide Operating Frequency: 100 kHz to 1MHz
GENERAL DESCRIPTION
The AAT1401 provides an integrated four channel
pulse-width-modulation (PWM) solution for the power
supply of DC-DC converter; this device offers system
engineer flexibility to tailor-make the power supply
circuitry for specific applications. Each channel contains
its own error amplifier, PWM comparator, dead-time
control (DTC) and output driver. The under-voltage
protection, oscillator, short circuit protection and voltage
reference circuit are the common features for the four
channels.
In addition to a boost conversion, AAT1401 also has two
synchronous rectification systems with alternatives of a
synchronous boost or buck on channel one (CH1) and a
boost or buck conversion on channel two
(CH2)
.
LQFP48 and VQFN40 Package
APPLICATIONS
Camcorders
Digital Cameras
CCD Imaging Devices
–
台灣類比科技股½有限公司
–
–
Advanced Analog Technology, Inc
.
–
Page 1 of 21
V 0.1
Advanced Analog Technology, Inc.
AAT1401
PIN CONFIGURATION
AAT1401
AAT1401
1
1
(VQFN-40)
(LQFP-48)
FUNCTION TABLE
Condition
SHDN
“Lo”
SD
−
Channel Status
CH1
Off
Off
On
Off
On
Off
On
Off
On
CH2
Off
CH3
Off
CH4
Off
X
SD1= “Lo”
SD1= “Hi”
SD2= “Lo”
SD2= “Hi”
SD3= “Lo”
SD3= “Hi”
SD4= “Lo”
SD4= “Hi”
“Hi”
–
台灣類比科技股½有限公司
–
–
Advanced Analog Technology, Inc
.
–
Page 2 of 21
V 0.1
Advanced Analog Technology, Inc.
AAT1401
PIN DESCRIPTION (VQFN-40)
Pin No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Name
MC1
SD1
SD4
SHDN
IE1
IE4
DTC1
OE1
DTC4
NC
OE4
RT
CT
VB
GND
VDD
I/O
I
I
I
I
I
I
I
O
I
-
O
-
-
O
P
P
O
-
I
-
I
I
I
I
O
O
I
I
I
-
O
-
O
O
P
P
O
-
O
O
Function
Boost or Buck Select for CH1
ON/OFF Control for CH1
ON/OFF Control for CH4
Power ON/OFF Control
Inverted Input for Error Amplifier 1 (EA1)
Inverted Input for Error Amplifier 4 (EA4)
Dead Time Control of CH1
Output for Error Amplifier 1 (EA1)
Dead Time Control of CH4
Output for Error Amplifier 4 (EA4)
External Frequency Setting Resistor
External Frequency Setting Capacitor
Reference Voltage 2.77V Output
Ground
Power Supply
Reference Voltage 1.245V Output
Short Circuit Protection Capacitor Connection Pin
ON/OFF Control for CH3
ON/OFF Control for CH2
Inverted Input 2 for Error Amplifier 3 (EA3)
Inverted Input for Error Amplifier 3 (EA3)
Inverted Input for Error Amplifier 2 (EA2)
Output for Error Amplifier 3 (EA3)
Output for Error Amplifier 2 (EA2)
Dead Time Control of CH3
Dead Time Control of CH2
Boost or Buck Select for CH2
CH2 Totem Pole Type Output
CH3 Totem Pole Type Output
CH4 Synchronous Rectifier Side Output
Output Buffer Ground
Output Buffer Power Supply
CH4 Totem Pole Type Output
CH1 Totem Pole Type Output
CH1 Synchronous Rectifier Side Output
V
REF
SCP
SD3
NC
SD2
IE3A
IE3
IE2
OE3
OE2
DTC3
DTC2
MC2
NC
OUT2
NC
OUT3
OUT4_2
PGND
PVDD
OUT4_1
NC
OUT1_1
OUT1_2
–
台灣類比科技股½有限公司
–
–
Advanced Analog Technology, Inc
.
–
Page 3 of 21
V 0.1
Advanced Analog Technology, Inc.
AAT1401
PIN DESCRIPTION (LQFP-48)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Name
NC
NC
MC1
SD1
SD4
SHDN
IE1
IE4
DTC1
OE1
DTC4
NC
OE4
RT
CT
NC
VB
NC
GND
NC
VDD
I/O
-
-
I
I
I
I
I
I
I
O
I
-
O
-
-
-
O
-
P
-
P
O
-
I
-
I
I
I
I
O
O
I
I
I
-
-
O
-
O
-
O
P
-
P
O
-
O
O
Function
Boost or Buck Select for CH1
ON/OFF Control for CH1
ON/OFF Control for CH4
Power ON/OFF Control
Inverted Input for Error Amplifier 1 (EA1)
Inverted Input for Error Amplifier 4 (EA4)
Dead Time Control of CH1
Output for Error Amplifier 1 (EA1)
Dead Time Control of CH4
Output for Error Amplifier 4 (EA4)
External Frequency Setting Resistor
External Frequency Setting Capacitor
Reference Voltage 2.77V Output
Ground
Power Supply
Reference Voltage 1.245V Output
Short Circuit Protection Capacitor Connection Pin
ON/OFF Control for CH3
ON/OFF Control for CH2
Inverted Input 2 for Error Amplifier 3 (EA3)
Inverted Input for Error Amplifier 3 (EA3)
Inverted Input for Error Amplifier 2 (EA2)
Output for Error Amplifier 3 (EA3)
Output for Error Amplifier 3 (EA2)
Dead Time Control of CH3
Dead Time Control of CH2
Boost or Buck Select for CH2
V
REF
SCP
SD3
NC
SD2
IE3A
IE3
IE2
OE3
OE2
DTC3
DTC2
MC2
NC
NC
OUT2
NC
OUT3
NC
OUT4_2
PGND
NC
PVDD
OUT4_1
NC
OUT1_1
OUT1_2
CH2 Totem Pole Type Output
CH3 Totem Pole Type Output
CH4 Synchronous Rectifier Side Output
Output Buffer Ground
Output Buffer Power Supply
CH4 Totem Pole Type Output
CH1 Totem Pole Type Output
CH1 Synchronous Rectifier Side Output
–
台灣類比科技股½有限公司
–
–
Advanced Analog Technology, Inc
.
–
Page 4 of 21
V 0.1
Advanced Analog Technology, Inc.
AAT1401
BLOCK DIAGRAM
–
台灣類比科技股½有限公司
–
–
Advanced Analog Technology, Inc
.
–
Page 5 of 21
V 0.1
Analogue and Mixed Signal
京公网安备 11010802033920号
EEWORLD
