Datasheet > ADP2503ACPZ-4.2-R7

ADP2503ACPZ-4.2-R7

更新时间： 2024-11-23 15:46:19

品牌	Logo	应用领域
亚德诺 - ADI		开关光电二极管
页数	文件大小	规格书
16页	1583K
描述
600 mA, 2.5 MHz Buck-Boost DC-to-DC Converter

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ADP2503ACPZ-4.2-R7 数据手册

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600 mA/1000 mA, 2.5 MHz Buck-Boost

DC-to-DC Converters

Data Sheet

ADP2503/ADP2504

FEATURES

GENERAL DESCRIPTION

1 mm height profile

Compact PCB footprint

The ADP2503/ADP2504 are high efficiency, low quiescent current

step-up/step-down dc-to-dc converters that can operate at input

voltages greater than, less than, or equal to the regulated output

voltage. The power switches and synchronous rectifiers are

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

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

pulse-width modulation (PWM) control scheme for optimal

stability and transient response. To ensure the longest battery life

Seamless transition between modes

38 μA typical quiescent current

2.5 MHz operation enables 1.5 ꢀH inductor

Input voltage: 2.3 V to 5.5 V

Fixed output voltage: 2.8 V to 5.0 V

Adjustable model output voltage range: 2.8 V to 5.5 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

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 applica-

tions 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 stan-

dard power sources. The ADP2503/ADP2504 have fixed output

options, or using the adjustable model, the output voltage can

be programmed through an external resistor divider. Compensa-

tion is internal to minimize the number of external components.

Undervoltage lockout protection

Small 10-lead 3 mm × 3 mm LFCSP (QFN) package

Supported by ADIsimPower™ design tool

During logic-controlled shutdown, the input is disconnected

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

Operating as boost converters, the ADP2503/ADP2504 feature a

true load disconnect function that isolates the load from the

power source. Other key features include undervoltage lockout

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

current overshoot at startup.

APPLICATIONS

Wireless handsets

Digital cameras/portable audio players

Miniature hard disk power supplies

USB powered devices

TYPICAL APPLICATION CIRCUIT

1.5µH

SW1

SW2

ADP2503/ADP2504

OUT

2.8V TO 5V

2.3V TO 5.5V

PVIN

VOUT

VIN

10µF

22µF

SYNC

AGND PGND

OFF

ALLOWS THE ADP2503/ADP2504 TO OPERATE IN

THREE DIFFERENT MODES.

Figure 1.

Rev. D

Document Feedback

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.

Technical Support

www.analog.com

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ADP2503ACPZ-4.2-R7 替代型号

型号	品牌	替代类型	描述	数据表
ADP2503ACPZ-R7	ADI	类似代替	600 mA, 2.5 MHz Buck-Boost DC-to-DC Converter
ADP2503ACPZ-5.0-R7	ADI	类似代替	600 mA, 2.5 MHz Buck-Boost DC-to-DC Converter

与ADP2503ACPZ-4.2-R7相关器件

型号	品牌	获取价格	描述	数据表
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
ADP2504ACPZ-2.8-R7	ROCHESTER	获取价格	2 A SWITCHING REGULATOR, 2900 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, ROHS COMPLIANT, LF
ADP2504ACPZ-2.8-R71	ADI	获取价格	600 mA/1000 mA, 2.5 MHz Buck-Boost DC-to-DC Converter
ADP2504ACPZ-3.3-R7	ADI	获取价格	1000 mA, 2.5 MHz Buck-Boost DC-to-DC Converter

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