Datasheet > ADP2503ACPZ-3.3-R71

ADP2503ACPZ-3.3-R71

更新时间： 2024-01-27 09:54:12

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
16页	1663K
描述
600 mA/1000 mA, 2.5 MHz Buck-Boost DC-to-DC Converter

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数据手册

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600 mA/1000 mA, 2.5 MHz Buck-Boost

DC-to-DC Converter

Preliminary Technical Data

ADP2503/ADP2504

FEATURES

GENERAL DESCRIPTION

1 mm height profile

Compact PCB footprint

Seamless transition between modes

38 μA typical quiescent current

2.5 MHz operation enables 1 ꢀH inductor

Input voltage: 2.3 V to 5.5 V

The ADP2503/ADP2504 are high efficiency, low quiescent

current step-up/step-down dc-to-dc converters that can operate

at input voltages above, below, or equal to the regulated output

voltage. The power switches and synchronous rectifiers are

internal to minimize external part count. At high load currents,

the ADP2503/ADP2504 use a current-mode, fixed frequency

PWM control scheme for optimal stability and transient response.

Fixed output voltage: 2.8 V to 5.0 V

600 mA (ADP2503) and 1000 mA (ADP2504) output options

Boost converter configuration with load disconnect

Sync pin with three different modes:

Power save mode (PSM) for improved light load efficiency

Forced fixed frequency operation mode

Synchronization with external clock

Internal compensation

Soft start

Enable/shutdown logic input

Overtemperature protection

Short-circuit protection

To ensure the longest battery life in portable applications, the

ADP2503/ADP2504 have an optional power save mode that

reduces the switching frequency under light load conditions.

For wireless and other low noise applications where variable

frequency power save mode may cause interference, the logic

control input sync forces fixed frequency PWM operation

under all load conditions.

The ADP2503/ADP2504 can run from input voltages between

2.3 V and 5.5 V, allowing single lithium or lithium polymer cell,

multiple alkaline or NiMH cells, PCMCIA, USB, and other

standard power sources. The ADP2503/ADP2504 have fixed

output options ranging from 2.8 V to 5 V. Compensation is

internal to minimize the number of external components.

Undervoltage lockout protection

Small 10-lead 3 mm × 3 mm LFCSP/QFN package

APPLICATIONS

During logic-controlled shutdown, the input is disconnected

from the output and draws less than 1 μA from the input source.

Operating as a boost converter, the ADP2503/ADP2504 feature

a true load disconnect function that isolates the load from the

power source. Other key features include under voltage lockout

to prevent deep battery discharge and soft start to prevent input

current overshoot at startup.

Wireless handsets

Digital cameras/portable audio players

Miniature hard disk power supplies

USB powered devices

TYPICAL APPLICATION CIRCUIT

1.0µH

SW1

SW2

ADP2503

OUT

2.8V TO 5V

2.3V TO 5.5V

PVIN

VOUT

VIN

10µF

22µF

SYNC

AGND PGND

OFF

Figure 1. Application Circuit

Rev. PrB

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ADP2503ACPZ-3.3-R71相关器件

型号	品牌	获取价格	描述	数据表
ADP2503ACPZ-3.5-R7	ROCHESTER	获取价格	1.4 A SWITCHING REGULATOR, 2900 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, ROHS COMPLIANT,
ADP2503ACPZ-3.5-R71	ADI	获取价格	600 mA/1000 mA, 2.5 MHz Buck-Boost DC-to-DC Converter
ADP2503ACPZ-4.2-R7	ADI	获取价格	600 mA, 2.5 MHz Buck-Boost DC-to-DC Converter
ADP2503ACPZ-4.2-R71	ADI	获取价格	600 mA/1000 mA, 2.5 MHz Buck-Boost DC-to-DC Converter
ADP2503ACPZ-4.5-R7	ADI	获取价格	600 mA, 2.5 MHz Buck-Boost DC-to-DC Converter
ADP2503ACPZ-4.5-R71	ADI	获取价格	600 mA/1000 mA, 2.5 MHz Buck-Boost DC-to-DC Converter
ADP2503ACPZ-5.0-R7	ADI	获取价格	600 mA, 2.5 MHz Buck-Boost DC-to-DC Converter
ADP2503ACPZ-5.0-R71	ADI	获取价格	600 mA/1000 mA, 2.5 MHz Buck-Boost DC-to-DC Converter
ADP2503ACPZ-R7	ADI	获取价格	600 mA, 2.5 MHz Buck-Boost DC-to-DC Converter
ADP2504	ADI	获取价格	600 mA/1000 mA, 2.5 MHz Buck-Boost DC-to-DC Converter

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