AT1396A/B/C/D
Preliminary Product Information
6-Channel DC-DC Converter for DSC
Features
•
95% Efficient possible DC/DC Converter
• Combine Step-Up and Step-Down for
90% Efficient Boost-Buck
• Bulit-in LED Driver and Open LED
Overvoltage Protection
• Transformerless Inverting Controller for CCD
Bias
• 2 Channel Built-in MOSFET Current- Mode
PWM and 4 Channel Extra PWM Controllers
(CH-3 Synchronous Output)
• Up to 1MHz Operating Frequency
• Shutdown Current <1uA
• Built-in Soft-Start Function
•
Built-in Short-Circuit Protection Function
• QFN48 Package
General Description
The AT1396A/B/C/D provide a complete power
supply solution for digital cameras. They improve
performance, component count, and size compared
to other multi-channel controllers in 2-cell AA,
1-cell Li-Ion, and dual-battery designs. On-chip
MOSFETs provide up to 92~95% efficiency for
critical power supplies, while additional channels
operate with external FETs for optimum design
flexibility. All channels DC/DC operate at one
fixed frequency settable from 100KHz to 1MHz to
optimize size, cost, and efficiency.
Applications
•
DSC Power Supply
Pin Assignment
Ordering Information
Part Number
AT1396AN
AT1396BN
AT1396CN
AT1396DN
Package
QFN48,Green
QFN48,Green
QFN48,Green
QFN48,Green
Marking
AT1396AN
AT1396BN
AT1396CN
AT1396DN
Aimtron reserves the right without notice to change this circuitry and specifications.
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
1
REVD: 05/05/23
AT1396A/B/C/D
Preliminary Product Information
6-Channel DC-DC Converter for DSC
Block Diagram
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
2
REVD: 05/05/23
AT1396A/B/C/D
Preliminary Product Information
6-Channel DC-DC Converter for DSC
Pin Description
Pin No. Pin name
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
SS1
CTL5
CTL6
LXU
CTLU
PGND1
PGND2
CTLD
LXD
CTL3
CTL4
SS2
/SDOK
CSCP
PVCC2
COMP2
FBD
SS3
COMP3
FB3
SS4
COMP4
IN4
IP4
PVCC3
OUT3M
OUT3S
PGND3
OUT4
OUT5
OUT6
PVCC4
GND
FB5H
FB5
COMP5
VBG
SS5
FB6
COMP6
CT
VREG
FBU
COMP1
VCC
PVCC1
SS6
SEL4
I/O
I
I
I
O
I
P
P
I
O
I
I
I
O
I
P
O
I
I
O
I
I
O
I
I
P
O
O
P
O
O
O
P
P
I
I
O
O
I
I
O
O
P
I
O
P
P
I
I
Description
CH1 Soft-Start Input
CH5 Enable Input
CH6 Enable Input
Step-Up Converter Switching Node
CH1 Enable and Chip Enable Input
Power Ground
Power Ground
CH2 Enable Input
Step-Down Converter Switching Node
CH3 Enable Input
CH4 Enable Input
CH2 Soft-Start Input
Open-Drain, Active Low, Power Good for Step-Down
Short Circuit Protection Input
Step-Down Converter Input
Step-Down Converter Compensation Node
Step-Down Converter Feedback Input
CH3 Soft-Start Input
CH3 Compensation Node
CH3 Feedback Input
CH4 Soft-Start Input
CH4 Compensation Node
CH4 Negative Feedback Input
CH4 Positive Feedback Input
CH3 Power
CH3 Master Output Driver
CH3 Slave Output Driver
Power Ground
CH4 Output Driver
CH5 Output Driver
CH6 Output Driver
CH4 Power
Power Ground
CH5 Controller Voltage Feedback Input
CH5 Controller Voltage Feedback/Current Feedback
CH5 Compensation Node
Reference Bypass
CH5 Soft-Start Input
CH6 Feedback input
CH6 Compensation Node
Oscillator Control
Reference Output
Step-Up Converter Input
Step-Up Controller Compensation Node
IC power Input
Power Output of the Step-Up Converter
CH6 Soft-Start Input
Configures the CH4 as a Step-Up or Step-Down
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
3
REVD: 05/05/23
AT1396A/B/C/D
Preliminary Product Information
6-Channel DC-DC Converter for DSC
Absolute Maximum Ratings
Item
Symbol
Ratings
Units
Storage temperature
Operating temperature
PVCC1,PVCC2,PVCC3,PVCC
4 input voltage
LXU,LXD, OUT3M,OUT3S
input voltage
Other input Pin
LXU Current
LXD Current
OUT3M,OUT3S Current
Power consumption
ESD Classification
T
STG
T
OPR
-55½＋150
-30½＋85
-0.3½＋5.5
℃
℃
V
V
LX/OUT
-0.3V½+5.5
-0.3V½+5.5
3.6
2.25
200
1000
2
V
V
A
A
mA
mW
KV
Pd
Electrical Characteristics
(PVCC1=PVCC2=PVCC3=PVCC4=VCC=3.6V, Ta=+25
0
C)
Values
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
GENERAL
Input Voltage Range
CH1,CH2
Switch- Off Input Current
VCC Channel 1 DC/DC
No Switching,
FBU=FBD=0.9V
CTLU=CTLD=3.6V,other
disable
No Switching,
FBU=FBD=FB3=0.9V
CTLU=CTLD=CTL3=3.6V
other disable
All CTL disable
1.2
-
5.5
V
I
VCC
-
1
1.1
mA
CH1,CH2, CH3(or 4,5,6)
Switch- Off Input Current
Shutdown Current
I
VCC
-
1.2
1.3
mA
μA
I
VCC
-
1
10
REFERENCE
Reference Output Voltage
Reference Load
Regulation
V
REG
I
REG
=1mA
∆V
REG1
1mA< I
REG
<10mA
2.275
-
-
2.30
5
-
2.325
10
5
V
mV
mV
Reference Line Regulation
∆V
REG2
2.5<VCC<5.5V
OSC
Frequency
Frequency variation with
Temperature
f
OSC
CT=82pF
-
-
500
1
-
10
KHz
%
∆f
OSC1
Ta=-20°C ~+85°C
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
4
REVD: 05/05/23
AT1396A/B/C/D
Preliminary Product Information
6-Channel DC-DC Converter for DSC
Frequency variation with
Input Voltage
∆f
OSC2
V
CC
=2.5V~5.5V
-
1
5
%
CHANNEL 1(STEP-UP)
Pre-OSC to OSC Trip
Level
Pre-OSC to OSC
Hysteresis
Under Voltage Lockout
Input Voltage Range
Normal Operating
Soft-Start Charge Current
FBU Regulation Voltage
FBU input Current
Current-Sense Amplifier
Transresistance
Transconductance
Maximum Duty Cycle
PVCC1 Leakage Current
LX Leakage Current
V
CC1
VCC rising edge
∆VCC1
VCC
PVCC1 Channel 1 DC/DC
I
SS1
V
CC
=2.5V~5.5V
-
-
-
1.2
0.8
0.784
-
-
-
85
-
-
-
-
1.8
-
-
-
2.45
100
2.45
-
1
0.8
-
0.285
140
90
5
1
95
150
2.1
20
450
200
-
-
-
6.0
1.5
0.816
100
-
-
95
12
5
150
250
2.4
-
-
-
V
mV
V
V
µA
V
nA
V/A
µs
%
µA
µA
mΩ
mΩ
A
mA
mA
KHz
V
FBU
Ta=-20°C ~+85°C
I
FBU
R
CS
G
MEA
D
MAX
FBU=0.7V
I
L1
I
LX1
R
N
VLXU=0V,PVCC1=5.5V
VLXU=5.5V
N-Channel
P-Channel
FBU=0.8V
Switch On-Resistance
R
P
N-Channel Current Limit
P-Channel Turn-off
Current
Startup Current Limit
Startup Frequency
I
Limit1
I
REV1
I
Limit-s
PVCC1=1.5V
f
START
PVCC1=1.5V
CHANNEL 2(STEP-DOWN)
Input Voltage Range
Normal Operating
Soft-Start Charge Current
FBD Regulation Voltage
FBD input Current
Current-Sense Amplifier
Transresistance
Transconductance
Maximum Duty Cycle
PVCC2 Channel 2 DC/DC
I
SS2
V
CC
=2.5V~5.5V
1.2
0.8
0.784
-
-
-
-
-
1
0.8
-
0.6
140
100
6.0
1.5
0.816
100
-
-
-
V
µA
V
nA
V/A
µs
%
V
FBD
Ta=-20°C ~+85°C
I
FBD
R
CS
G
MEA
D
MAX
FBD=0.7V
FBD=0.8V
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
5
REVD: 05/05/23
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