Datasheet > ADP5034ACPZ-1-R7

ADP5034ACPZ-1-R7

更新时间： 2024-11-23 08:19:39

品牌	Logo	应用领域
亚德诺 - ADI		稳压器
页数	文件大小	规格书
28页	701K
描述
Dual 3 MHz, 1200 mA Buck Regulators with Two 300 mA LDOs

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ADP5034ACPZ-1-R7 数据手册

Dual 3 MHz, 1200 mA Buck

Regulators with Two 300 mA LDOs

ADP5034

Data Sheet

4 mm LFCSP to meet demanding performance and board space

requirements.

FEATURES

Main input voltage range: 2.3 V to 5.5 V

The high switching frequency of the buck regulators enables tiny

multilayer external components and minimizes the board space.

When the MODE pin is set to high, the buck regulators operate in

forced PWM mode. When the MODE pin is set to low, the buck

regulators operate in PWM mode when the load is above a pre-

defined threshold. When the load current falls below a predefined

threshold, the regulator operates in power save mode (PSM),

improving the light load efficiency.

Two 1200 mA buck regulators and two 300 mA LDOs

24-lead, 4 mm × 4 mm LFCSP package

Regulator accuracy: 3ꢀ

Factory programmable or external adjustable VOUTx

3 MHz buck operation with forced PWM and auto PWM/PSM

modes

BUCK1/BUCK2: output voltage range from 0.8 V to 3.8 V

LDO1/LDO2: output voltage range from 0.8 V to 5.2 V

LDO1/LDO2: low input supply voltage from 1.7 V to 5.5 V

LDO1/LDO2: high PSRR and low output noise

The two bucks operate out of phase to reduce the input capaci-

tor requirement. The low quiescent current, low dropout voltage,

and wide input voltage range of the ADP5034 LDOs extend the

battery life of portable devices. The ADP5034 LDOs maintain

power supply rejection greater than 60 dB for frequencies as

high as 10 kHz while operating with a low headroom voltage.

APPLICATIONS

Power for processors, ASICS, FPGAs, and RF chipsets

Portable instrumentation and medical devices

Space constrained devices

Regulators in the ADP5034 are activated through dedicated

enable pins. The default output voltages can be externally set in

the adjustable version, or factory programmable to a wide range

of preset values in the fixed voltage version.

GENERAL DESCRIPTION

The ADP5034 combines two high performance buck regulators

and two low dropout (LDO) regulators in a small, 24-lead 4 mm ×

TYPICAL APPLICATION CIRCUIT

AVIN

HOUSEKEEPING

0.1µF

AVIN

VOUT1

L1 1µH

VIN1

SW1

FB1

2.3V TO

5.5V

OUT1

1200mA

4.7µF

BUCK1

MODE

10µF

PGND1

EN1

VIN2

EN2

EN1

OFF

PWM

MODE

PSM/PWM

VOUT2

MODE

L2 1µH

SW2

FB2

4.7µF

OUT2

1200mA

BUCK2

10µF

EN2

EN3

PGND2

EN3

VOUT3

FB3

OUT3

300mA

LDO1

(ANALOG)

VIN3

1.7V TO

5.5V

1µF

EN4

VOUT4

FB4

EN4

OUT4

300mA

OFF

LDO2

(DIGITAL)

VIN4

1µF

ADP5034

AGND

Figure 1.

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 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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ADP5034ACPZ-2-R7	ADI	获取价格	Dual 3 MHz, 1200 mA Buck Regulators with Two 300 mA LDOs
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ADP5034AREZ-1-R7	ADI	获取价格	Dual 3 MHz, 1200mA Buck Regulator with Two 300 mA LDOs
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