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AT1382B 데이터시트 PDF




Aimtron Technology에서 제조한 전자 부품 AT1382B은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 AT1382B 기능
기능 4-Channel DC-DC Converter
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AT1382B 데이터시트, 핀배열, 회로
www.DataSheet4U.com
AT1382B
Preliminary Product Information
4-Channel DC-DC Converter for DSC
Features
• Low start-up power supply voltage :1.4V(CH4)
• Wide supply voltage range from 1.8V to 7V
(CH1~4)
• High speed operation is possible: Maximum
1 MHz
• Supports for down and up/down Zeta
conversion (CH1)
• Supports for up, flyback and up/down SEPIC
conversion (CH2,3,4)
• Totem-pole type output for MOSFET
• Built-in On/Off function
• Built-in Short-Circuit Protection
Applications
• Digital Cameras
• CCD Imaging Devices
• Camcorders
General Description
The AT1382B is a 4-channel PWM DC/DC control
IC for low voltage applications with a soft start
function and short circuit detection function. This
IC is ideal for up conversion, down conversion,
and up/down conversion (using a step-up/step-
down Zeta(CH1) and SEPIC(CH2,3,4) system with
free input and output settings). Four channels can
be built in the LQFP48 package, each channel be
controlled, and soft-start.
The AT1382B include one comparator to generate
low-battery warning outputs. It also contains a gain
block that can be used with an external P-channel
MOSFET to make a low-dropout linear regulator.
Pin Assignment
Ordering Information
Part number
AT1382BF
Package
LQFP48
Marking
AT1382BF
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
1




AT1382B pdf, 반도체, 판매, 대치품
AT1382B
Preliminary Product Information
4-Channel DC-DC Converter for DSC
Absolute Maximum Ratings
Parameter
Symbol
Power supply voltage
Vcc
Condition
--
Rating
Min Max
-- 8
Unit
V
Output current
Io Output pin
-- 20 mA
Output peak current
Io Output pin, Duty5%
--
200 mA
Power dissipation
Operation temperature
PD Ta25(LQFP-48P)
Topr --
--
-30
860 mW
85
Storage temperature
Tstg
--
-55 125
*Semiconductor devices can be permanently damaged by application of stress in excess of absolute ratings. Do not
exceed these ratings.
Recommended Operating Conditions
Parameter
Symbol Condition
Startup power supply voltage
Power supply voltage
Reference voltage output current
VB pin output current
Input voltage
Control input voltage
Output current
Oscillator
Timing capacitor
Timing resistor
Soft start capacitor
Short detection capacitor
VB pin capacitor
Operating ambient temperature
Vcc
Vcc
IOR
IB
VIN
VCTL
Io
fOSC
CT
RT
Cs
CCS4
CSCP
CVB
Ta
CH4
CH4
CH1 to CH3
VREF pin
VB pin
IN1 to IN4 pins
CTL pin
OUT pin (CH1 to CH3)
OUT pin (CH4)
--
--
--
CH1 to CH3
CH4
--
--
--
Min
1.4
1.5
1.8
-1
-0.5
0
0
--
1
100
47
8.2
--
--
--
0.082
-30
Value
Typ
--
5.0
5.0
Max
7
7
7
Unit
V
V
V
-- 0 mA
-- 0 mA
-- Vcc-1.8 V
-- 7 V
2 15 mA
2 15 mA
500 1000 kHz
100 560 pF
18 100 kΩ
0.027 1.0 μF
0.47 1.0 μF
0.1 1.0 μF
0.1 -- μF
25 85
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
4

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AT1382B 전자부품, 판매, 대치품
AT1382B
Preliminary Product Information
4-Channel DC-DC Converter for DSC
Input current
Analog gain block [AO,AI]
VIL Standby mode
ICTL CTL = 5V
0 - 0.8 V
- 5 20 μA
AI feedback regulation voltage
AI input common-mode range
VAO=VOUT-1.22V
1.20 1.22 1.24
-0.1 - 1.3
V
V
AI input current
AI to AO voltage gain
VAI=1.32V
- - 100 nA
70 100 140 V/V
AO output sink current
AO output source current
ENLD enable
VIH
ENLD disable
VIL
Low battery detect block [LBI, LBO]
VAI=1V, VAO=2V
VAI=1.5V, VAO=2V
Active mode
Standby mode
0.5 2.5
- mA
0.5 2.5
- mA
1.2 -
7V
0 - 0.8 V
LBI detect threshold
1.20 1.22 1.24 V
Detect Hysteresis
-50 +50 mV
LBO output voltage low
Isink=1mA
- - 0.4 V
LBO output high leakage
VLBO=5V
- 0.01 1 μA
General
Standby current
Power supply current
Icss
Icss(o)
Icc
CTL=0V
CTL=0V
CTL1=CTL2=CTL3=CT
L4="H"
CTL=CTL1=CTL2=CTL
3=CTL4=ENLD="H"
-
-
-
- 10 μA
- 10 μA
3 6 mA
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
7

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