Aimtron AT1396A, AT1396B, AT1396C, AT1396D User Manual

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Preliminary Product Information

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

Applications

• DSC Power Supply

AT1396A/B/C/D

6-Channel DC-DC Converter for DSC

General Description

The AT1396A/B/C/D provide a complete power
supply solution for digital cameras. They improve

erformance, 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.

Pin Assignment

Ordering Information

Part Number Package Marking

AT1396AN QFN48,Green AT1396AN
AT1396BN QFN48,Green AT1396BN
AT1396CN QFN48,Green AT1396CN
AT1396DN QFN48,Green 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: [phone] WWW: http://www.aimtron.com.tw
Fax: [phone] Email: [e-mail]

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: [phone] WWW: http://www.aimtron.com.tw
Fax: [phone] Email: [e-mail]

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 I/O Description

1 SS1 I CH1 Soft-Start Input
2 CTL5 I CH5 Enable Input
3 CTL6 I CH6 Enable Input
4 LXU O Step-Up Converter Switching Node
5 CTLU I CH1 Enable and Chip Enable Input
6 PGND1 P Power Ground
7 PGND2 P Power Ground
8 CTLD I CH2 Enable Input

9 LXD O Step-Down Converter Switching Node
10 CTL3 I CH3 Enable Input
11 CTL4 I CH4 Enable Input
12 SS2 I CH2 Soft-Start Input
13 /SDOK O Open-Drain, Active Low, Power Good for Step-Down
14 CSCP I Short Circuit Protection Input
15 PVCC2 P Step-Down Converter Input
16 COMP2 O Step-Down Converter Compensation Node
17 FBD I Step-Down Converter Feedback Input
18 SS3 I CH3 Soft-Start Input
19 COMP3 O CH3 Compensation Node
20 FB3 I CH3 Feedback Input
21 SS4 I CH4 Soft-Start Input
22 COMP4 O CH4 Compensation Node
23 IN4 I CH4 Negative Feedback Input
24 IP4 I CH4 Positive Feedback Input
25 PVCC3 P CH3 Power
26 OUT3M O CH3 Master Output Driver
27 OUT3S O CH3 Slave Output Driver
28 PGND3 P Power Ground
29 OUT4 O CH4 Output Driver
30 OUT5 O CH5 Output Driver
31 OUT6 O CH6 Output Driver
32 PVCC4 P CH4 Power
33 GND P Power Ground
34 FB5H I CH5 Controller Voltage Feedback Input
35 FB5 I CH5 Controller Voltage Feedback/Current Feedback
36 COMP5 O CH5 Compensation Node
37 VBG O Reference Bypass
38 SS5 I CH5 Soft-Start Input
39 FB6 I CH6 Feedback input
40 COMP6 O CH6 Compensation Node
41 CT O Oscillator Control
42 VREG P Reference Output
43 FBU I Step-Up Converter Input
44 COMP1 O Step-Up Controller Compensation Node
45 VCC P IC power Input
46 PVCC1 P Power Output of the Step-Up Converter
47 SS6 I CH6 Soft-Start Input
48 SEL4 I 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: [phone] WWW: http://www.aimtron.com.tw
Fax: [phone] Email: [e-mail]

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 T

Operating temperature T

STG
OPR

PVCC1,PVCC2,PVCC3,PVCC

4 input voltage

LXU,LXD, OUT3M,OUT3S

V

LX/OUT

input voltage

Other input Pin

LXU Current 3.6 A
LXD Current 2.25 A

OUT3M,OUT3S Current 200 mA

Power consumption Pd 1000 mW

ESD Classification 2 KV

-55～＋150 ℃

-30～＋85 ℃

-0.3～＋5.5

-0.3V～+5.5

-0.3V～+5.5

V

V

V

Electrical Characteristics

(PVCC1=PVCC2=PVCC3=PVCC4=VCC=3.6V, Ta=+25

Values

Parameter Symbol Condition

Unit

Min. Typ. Max.

GENERAL

Input Voltage R ange VCC Channel 1 DC/DC 1.2 - 5.5 V

No Switching,
CH1,CH2
Switch- Off Input Current

FBU=FBD=0.9V

I

VCC

CTLU=CTLD=3.6V,other

- 1 1.1 mA

disable

No Switching,
CH1,CH2, CH3(or 4,5,6)
Switch- Off Input Current

FBU=FBD=FB3=0.9V

I

VCC

CTLU=CTLD=CTL3=3.6V

- 1.2 1.3 mA

other disable
Shutdown Current I

All CTL disable - 1 10

VCC

μA

REFERENCE

Reference Output Voltage V
Reference Load

Regulation

∆V

REG IREG

REG1

=1mA 2.275 2.30 2.325 V

1mA< I

<10mA - 5 10 mV

REG

0

C)

Reference Line Regulation

∆V

2.5<VCC<5.5V - - 5 mV

REG2

OSC

Frequency f
Frequency variation with

Temperature

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] WWW: http://www.aimtron.com.tw
Fax: [phone] Email: [e-mail]

CT=82pF - 500 - KHz

OSC

∆f

Ta=-20°C ~+85°C

OSC1

- 1 10 %

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

CHANNEL 1(STEP-UP)

Pre-OSC to OSC Trip
Level
Pre-OSC to OSC
Hysteresis

Under Voltage Lockout VCC - 2.45 - V

Input Voltage Ra nge PVCC1 Channel 1 DC/DC 1.2 - 6.0 V

V

CC1

∆VCC1

=2.5V~5.5V - 1 5 %

V

CC

VCC rising edge - 2.45 - V

- 100 - mV

Normal Operating
Soft-Start Charge Current

FBU Regulation Voltage V

FBU input Current I
Current-Sense Amplifier

Transresistance
Transconductance G

Maximum Duty Cycle D

I

SS1

FBU

R

MEA

MAX

FBU

CS

PVCC1 Leakage Current IL1

LX Leakage Current I

LX1

RN N-Channel - 95 150

Switch On-Resistance

R

N-Channel Current Limit I
P-Channel Turn-off

Current
Startup Current Limit I

Limit1

I

REV1

Limit-s

VCC =2.5V~5.5V 0.8 1 1.5

Ta=-20°C ~+85°C

0.784 0.8 0.816 V

µA

FBU=0.8V - - 100 nA

- 0.285 - V/A

- 140 -

µs

FBU=0.7V 85 90 95 %

V

=0V,PVCC1=5.5V

LXU

V

LXU

=5.5V

- 5 12

- 1 5

µA

µA

mΩ

P-Channel - 150 250

P

mΩ

1.8 2.1 2.4 A

- 20 - mA

PVCC1=1.5V - 450 - mA

Startup Frequency f

PVCC1=1.5V - 200 - KHz

START

CHANNEL 2(STEP-DOWN)

Input Voltage Ra nge PVCC2 Channel 2 DC/DC 1.2 - 6.0 V
Normal Operating

Soft-Start Charge Current
FBD Regulation Voltage V

FBD input Current I
Current-Sense Amplifier

Transresistance
Transconductance G

Maximum Duty Cycle D

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] WWW: http://www.aimtron.com.tw
Fax: [phone] Email: [e-mail]

I

VCC =2.5V~5.5V 0.8 1 1.5

SS2

Ta=-20°C ~+85°C

FBD

FBD=0.8V - - 100 nA

FBD

R

- 0.6 - V/A

CS

- 140 -

MEA

FBD=0.7V - 100 - %

MAX

0.784 0.8 0.816 V

5 REVD: 05/05/23

µA

µs

AT1396A/B/C/D

Preliminary Product Information

6-Channel DC-DC Converter for DSC

LX Leakage Current I

VLX=0~3.6V,PVCC2=3.6V

LX2

- 1 5

RN N-Channel - 95 150

µA

mΩ

Switch On-Resistance

R

P-Channel Current Limit I
N-Channel Turn-off

Current
/SDOK Output Low

Voltage
/SDOK Leakage current I

P-Channel - 150 250

P

1.0 1.2 1.4 A

Limit2

I

- 20 - mA

REV2

V

0.1mA into /SDOK - 0.01 0.1 V

SDOK

CTLD=0V,/SDOK=5.5V - 0.1 1

L_SDOK

mΩ

µA

CHANNEL 3

Input Voltage Ra nge PVCC3 Channel 3 DC/DC 1.2 - 6.0 V
Normal Operating

Soft-Start Charge Current
FB3 input Current I

FB3 Regulation Voltage V
Error Amplifier V oltage

Gain
Error Amplifier Frequency

Bandwidth

I

VCC =2.5V~5.5V 0.8 1 1.5

SS3

FB3=0.8V - - 100 nA

FB3

Ta=-20°C ~+85°C,

FB3

FB3=COMP3

0.784 0.8 0.816 V

µA

AV DC 80 - - dB

BW AV=0dB - 5 - MHz

Error Amplifier Output
Voltage

Error Amplifier Output
Source Current

Output Source Current

Output Sink Current

Output On-Resistor

Maximum Duty Cycle

CHANNEL 4,5,6

V

VOL

I

I

D

D

- 1.0 - V

OH

- 10 - mV

COMP=0.8V - -0.5 - mA

source

I

COMP=0.8V - 60 -

sink

DUTY=90%,OUT=1/2VCC - -130 -80 mA

source

I

DUTY=0%,OUT=1/2VCC 65 100 - mA

sink

ROH

OUT=-15mA - 18 30

R

OUT=15mA - 16 25

OL

Step-Up Mode 85 90 95 %

MAX

Step-Down Mode - 100 - %

MAX

µA

Ω

Ω

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] WWW: http://www.aimtron.com.tw
Fax: [phone] Email: [e-mail]

6 REVD: 05/05/23

AT1396A/B/C/D

Preliminary Product Information

6-Channel DC-DC Converter for DSC

Input Voltage R ange PVCC4 Channel 4,5,6 DC/DC 1.2 - 6.0 V
Normal Operating

Soft-Start Charge Current
FB4/5/6 Regulation

Voltage

V

FB5 Regulation Voltage
for LED Driver

FB5H OVP Trip Level V
Error Amplifier V oltage

Gain
Error Amplifier Frequency

Bandwidth

Error Amplifier Output
Voltage

Error Amplifier Output
Source Current

Maximum Duty Cycle

I

SS4/5/6 VCC

FB4/5/6

V

FB5

FB5H

=2.5V~5.5V 0.8 1 1.5

Ta=-20°C ~+85°C,

FB_=COMP_

Ta=-20°C ~+85°C,

FB5=COMP5

Ta=-20°C ~+85°C,

0.784 0.8 0.816 V

0.19 0.20 0.21 V

0.98 1.00 1.02 V

µA

AV DC 80 - - dB

BW AV=0dB - 5 - MHz

V

VOL

I

D

D

- 1.0 - V

OH

- 10 - mV

COMP=0.8V - -0.5 - mA

source

I

COMP=0.8V - 60 -

sink

FB_=0.7V 85 90 95 %

MAX

FB5=0.1V 85 90 95 %

MAX

µA

Output Source Current

Output Sink Current

I

DUTY=90%,OUT=1/2VCC - -130 -80 mA

source

I

DUTY=0%,OUT=1/2VCC 65 100 - mA

sink

ROH

OUT=-15mA - 18 30
Output On-Resistor

R

OUT=15mA - 16 25

OL

SHORT CIRCUIT PROTECTION

V

Threshold Voltage

CSCP Charge Current

I

CH3,CH4,CH5,CH6 - 0.9 - V

TH

0.8 1.0 1.5

CSCP

CONTROL BLOCK

VIH

PVCC1=VCC=1.5 ~5.5V 1.1 - VCC V
CTLU input Voltage

V

PVCC1=VCC=1.5 ~5.5V 0 - 0.5 V

IL

PVCC1 , 2=VCC=1.5 ~5.5V

VIH

CTLD input Voltage

CTLD=V

PVCC1 , 2=VCC=1.5 ~5.5V

V

IL

CTLD=V

IH

IH

Ω

Ω

µA

1.1 - VCC V

0 - 0.5 V

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] WWW: http://www.aimtron.com.tw
Fax: [phone] Email: [e-mail]

7 REVD: 05/05/23

AT1396A/B/C/D

Preliminary Product Information

6-Channel DC-DC Converter for DSC

PVCC1 , 3=VCC=1.5 ~5.5V
CTL3 input Voltage

CTL4 , 5 , 6 input Voltage

SEL4 input Voltage

VIH

CTLU=V

PVCC1 , 3=VCC=1.5 ~5.5V

V

IL

CTLU=V

PVCC1 , 4=VCC=1.5 ~5.5V

VIH

CTLU=V

PVCC1 , 4=VCC=1.5 ~5.5V

V

IL

CTLU=V

PVCC1 , 4=VCC=1.5 ~5.5V

VIH

CTLU=CTL4=V

PVCC1 , 4=VCC=1.5 ~5.5V

V

IL

CTLU=CTL4=V

IH

IH

IH

IH

IH

IH

1.4 - VCC V

0 - 0.5 V

1.4 - VCC V

0 - 0.5 V

1.4 - VCC V

0 - 0.5 V

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] WWW: http://www.aimtron.com.tw
Fax: [phone] Email: [e-mail]

8 REVD: 05/05/23