Datasheet > ADP5020

ADP5020

更新时间： 2024-01-31 19:04:28

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亚德诺 - ADI		/
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描述
Power Management Unit for Imaging Modules

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数据手册

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ADP5020 数据手册

Power Management Unit

for Imaging Modules

ADP5020

TYPICAL APPLICATIONS CIRCUIT

FEATURES

2.4V TO 5.5V

Input voltage range: 2.4 V to 5.5 V

Low standby current: 1 μA

Switching frequency: 3 MHz

I²C interface

Synchronous Buck 1 regulator: 600 mA

Synchronous Buck 2 regulator: 250 mA

Low dropout regulator (LDO): 150 mA

Internal compensation

SW1

VDD1

VDD2

VDD3

VDDA

10µF

2.2µH

OUT1

2.5V TO 3.7V

VOUT1

10µF

PGND1

OUT2

ADP5020

2.2µH

1.1V TO 1.8V

SW2

Internal soft start

Thermal shutdown

1µF

4.7µF

VOUT2

DD_IO

1.7V TO 3.6V

VDD_IO

PGND2

VOUT3

20-lead 4 mm × 4 mm LFCSP

OUT3

1.8V TO 3.3V

10kΩ 10kΩ

0.1µF

APPLICATIONS

Digital cameras, handsets

Mobile TVs

1µF

SDA

SCL

EXT. FREQ

9.6/19.2MHz

SYNC

XSHTDN

EN/GPIO

DGND

AGND

Figure 1.

GENERAL DESCRIPTION

The ADP5020 provides a highly integrated power solution that

includes all of the power circuits necessary for a digital imaging

module. It comprises two step-down dc-to-dc converters, one

LDO, and a power sequence controller. All dc-to-dc converters

integrate power pMOSFETs and nMOSFETs, making the system

simpler and more compact and reducing the cost. The ADP5020

has digitally programmed output voltages and buck converters

that can source up to 600 mA. A fixed frequency operation of

3 MHz enables the use of tiny inductors and capacitors. The buck

converters use a voltage mode, constant-frequency PWM control

scheme, and the synchronous rectification is implemented to

reduce the power loss. The Buck 1 regulator operates at up to

93% efficiency.

The ADP5020 provides high performance, reduces component

count and size, and is lower in cost when compared to conven-

tional designs.

The ADP5020 runs on input voltage from 2.4 V to 5.5 V and

supports one-cell lithium-ion (Li+) batteries. The high perfor-

mance LDO maximizes noise suppression. The ADP5020 can be

activated via an I²C® interface or through a dedicated enable input.

During logic-controlled shutdown, the input is disconnected

from the output source, and the part draws 1 μA typical from

the input source. Other key features include undervoltage lockout

to prevent deep-battery discharge and soft start to prevent input

current overshoot at startup. The ADP5020 is available in a

20-lead LFCSP.

Rev. 0

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 registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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与ADP5020相关器件

型号	品牌	获取价格	描述	数据表
ADP5020ACPZ-R7	ADI	获取价格	Power Management Unit for Imaging Modules
ADP5020CP-EVALZ	ADI	获取价格	Power Management Unit for Imaging Modules
ADP5022	ADI	获取价格	Dual 3 MHz, 600 mA Buck Regulator with 150 mA LDO
ADP5022ACBZ-1-R7	ADI	获取价格	Dual 3 MHz, 600 mA Buck Regulator with 150 mA LDO
ADP5022ACBZ-2-R7	ADI	获取价格	Dual 3 MHz, 600 mA Buck Regulator with 150 mA LDO
ADP5022ACBZ-4-R7	ADI	获取价格	Dual 3 MHz, 600 mA Buck Regulator with 150 mA LDO
ADP5023	ADI	获取价格	Dual 3 MHz, 800 mA Buck
ADP5023ACPZ-1-R7	ADI	获取价格	Dual 3 MHz, 800 mA Buck
ADP5023ACPZ-R7	ADI	获取价格	Dual 3 MHz, 800 mA Buck
ADP5023CP-EVALZ	ADI	获取价格	Dual 3 MHz, 800 mA Buck

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