Datasheet > ADM6819WRJZ-REEL7

ADM6819WRJZ-REEL7

更新时间： 2024-11-29 21:20:23

品牌	Logo	应用领域
亚德诺 - ADI		功率控制光电二极管
页数	文件大小	规格书
8页	151K
描述
IC IC,POWER CONTROL/MANAGEMENT,TSOP,6PIN,PLASTIC, Power Management Circuit

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FET Drive Simple Sequencers^TM

ADM6819/ADM6820

Preliminary Technical Data

FEATURES

Single Chip Enables Power Supply Sequencing of two

supplies

On Board Charge Pump Fully enhances N Channel FET

Adjustable Primary Supply Monitor monitors down to

0.61V

Functional Block Diagram

CC1

OUT

CC2

Delay from Primary Supply Good to Secondary Supply

Enabled

CC2

CC1

Fixed 300ms delay (ADM6819)

FET

CHARGE

PUMP

Capacitor Adjustable Delay (ADM6820)

Logic / Analog Driven ENABLE Input (ADM6819)

-40°C to +125°C Operating Range

Packaged in small 6 Lead SOT-23 Package

Pin for pin compatible with MAX6819/MAX6820

UVLO

LOGIC

GATE

FET

DRIVER

SETV

0.61V

APPLICATIONS

TIMER

Multi-Voltage Systems

Dual Voltage Microprocessors/FPGAs/ASICs/DSPs/

Network Processors

Telecoms and Datacom s Systems

PC/Server Applications

0.61V

ADM6819/20

GND

EN (ADM6819) - Digital / Analog

SETD (ADM6820)

An internal comparator monitors the primary supply using the

VSET pin. The input to this comparator is externally set via a

resistor divider from the primary supply. When the voltage at

the VSET pin rises above the comparator threshold, the

secondary supply FET will be enhanced by an internal charge

pump on the GATE output. The ADM6819 features an Enable

(EN) pin which is fed to the input of an additional comparator

and reference circuit. This pin can be used as a digital enable or

a secondary power good comparator to monitor a second

supply and only enable the GATE if both supplies are valid.

When both the internal comparators inputs are above the

threshold, a fixed 300ms timeout will occur before the GATE is

driven high and the secondary supply is enabled.

GENERAL DESCRIPTION

The ADM6819 and ADM6820 are simple power supply

sequencers with FET drive capability for enhancing N Channel

MOSFETs. These devices can monitor a primary supply voltage

and enable/disable an external N-channel FET for a secondary

supply. The ADM6819 has the ability to monitor two supplies.

Where more than two voltages require sequencing multiple

ADM6819/20 devices can be cascaded to achieve this. The

devices operate over a supply range of 2.7V to 5.5V.

The ADM6820 has only one comparator which is on the SETV

pin and features a timeout period which is adjustable via a

single external capacitor on the SETD pin.

The ADM6819/20 are packaged in small 6-pin SOT-23

packages.

Rev.PrH

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 that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective companies.

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

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

12 3 4 5 6 7 8

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与ADM6819WRJZ-REEL7相关器件

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ADM6820WRJZ-REEL7	ADI	获取价格	IC IC,POWER CONTROL/MANAGEMENT,TSOP,6PIN,PLASTIC, Power Management Circuit
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ADM6821LART-RL	ADI	获取价格	Low Voltage Supervisory Circuits with Watchdog & Manual Reset in 5-Lead SOT-23
ADM6821LART-RL7	ADI	获取价格	Low Voltage Supervisory Circuits with Watchdog & Manual Reset in 5-Lead SOT-23
ADM6821LYRJZ-RL7	ADI	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5, LEAD FREE, SOT-23, 5 PIN
ADM6821MART-RL	ADI	获取价格	Low Voltage Supervisory Circuits with Watchdog & Manual Reset in 5-Lead SOT-23
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