Datasheet > ADM1052JR-REEL7

ADM1052JR-REEL7

更新时间： 2024-11-23 20:41:03

品牌	Logo	应用领域
亚德诺 - ADI		光电二极管
页数	文件大小	规格书
8页	154K
描述
IC SPECIALTY ANALOG CIRCUIT, PDSO8, SOIC-8, Analog IC:Other

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ADM1052JR-REEL7 数据手册

Precision Dual Voltage

Regulator Controller

ADM1052

GENERAL DESCRIPTION

FEATURES

The ADM1052 is a dual, precision, voltage regulator controller

intended for power rail generation and active bus termination

on personal computer motherboards. It contains a precision

1.2 V bandgap reference and two channels consisting of con-

trol amplifiers driving external power devices. Each channel has a

shutdown input to turn off amplifier output and “Hiccup Mode”

protection circuitry for the external power device.

Two Independent Controllers on One Chip

Two 2.525 V Outputs

Shutdown Inputs to Control Each Channel

ꢀ2.5% Accuracy Over Line, Load, and Temperature

Low Quiescent Current

Low Shutdown Current

Works with External N-Channel MOSFETs for Low Cost

“Hiccup Mode” Fault Protection

No External Voltage or Current Setting Resistors

Small, 8-Lead SO Package

The ADM1052 operates from a 12 V supply. This gives suffi-

cient headroom for the amplifiers to drive external N-channel

MOSFETs, operating as source-followers, as the external series

pass devices. This has the advantage that N-channel devices are

cheaper than P-channel devices of similar performance, and the

circuit is easier to stabilize than one using P-channel devices in

a common-source configuration.

APPLICATIONS

Desktop Computers

Servers

Workstations

FUNCTIONAL BLOCK DIAGRAM

3.3V

CONTROL

AMPLIFIER

100ꢁF

ADM1052

BANDGAP

REFERENCE

FORCE 1

SENSE 1

OUT1

50ꢁA

2 ꢂ 100ꢁF

SHUTDOWN

CONTROL

SHDN1

HICCUP

COMPARATOR

3.3V

CONTROL

AMPLIFIER

100ꢁF

FORCE 2

SENSE 2

OUT2

2 ꢂ 100ꢁF

50ꢁA

SHUTDOWN

CONTROL

SHDN2

HICCUP

COMPARATOR

POWER-ON

RESET

CLK/DELAY

GENERATOR

CLOCK

OSCILLATOR

GND

REV. A

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

World Wide Web Site: http://www.analog.com

12 3 4 5 6 7 8

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