Datasheet > ADP2147CB-130EVALZ

ADP2147CB-130EVALZ

更新时间： 2024-11-25 08:19:35

品牌	Logo	应用领域
亚德诺 - ADI		稳压器
页数	文件大小	规格书
16页	543K
描述
Compact, 800 mA, 3 MHz, Simple DVS, Buck Regulator Input voltage: 2.3 V to 5.5 V

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Compact, 800 mA, 3 MHz,

Simple DVS, Buck Regulator

ADP2147

FEATURES

GENERAL DESCRIPTION

Input voltage: 2.3 V to 5.5 V

Peak efficiency: 95%

3 MHz fixed frequency operation

Low quiescent current: 23 μA

Ultralow shutdown current: 0.2 μA (typical)

VSEL pin for simple dynamic voltage scaling (DVS)

100% duty cycle low dropout mode

Internal synchronous rectifier, compensation, and soft start

Current overload and thermal shutdown protection

Small, 6-ball, 1 mm × 1.5 mm WLCSP package

The ADP2147 is a high efficiency, low quiescent current, step-

down (buck) dc-to-dc regulator with an output voltage that can

be switched between two different settings under the control of

a select pin. The total solution requires only three tiny external

components.

The buck regulator automatically switches operating modes,

depending on the load current level, to maximize efficiency. At

high output loads, the buck regulator operates in PWM mode.

When the load current falls below a predefined threshold, the

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

light-load efficiency.

APPLICATIONS

The ADP2147 runs on input voltages of 2.3 V to 5.5 V, which

allows for single lithium or lithium polymer cells, multiple

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

power sources. The maximum load current of 800 mA is

achievable across the input voltage range.

PDAs and palmtop computers

Wireless handsets

Digital audio portable media players

Digital cameras, GPS navigation units

Low power portable medical equipment

The ADP2147 is available with fixed output voltages from 0.8 V

to 3.3 V. All versions include an internal power switch and

synchronous rectifier for minimal external part count and high

efficiency. The ADP2147 has an internal soft start and is

internally compensated. During logic controlled shutdown, the

input is disconnected from the output, and the ADP2147 draws

less than 0.2 μA (typical) from the power source.

Other key features include undervoltage lockout to prevent deep

battery discharge and soft start to prevent input current over-

shoot at startup. The ADP2147 is available in a 6-ball WLCSP.

TYPICAL APPLICATIONS CIRCUIT

1.0µH

OUT

2.3V TO 5.5V

VIN

4.7µF

ADP2147

VOUT

OFF

OUT

VSEL

OUT

GND

Figure 1.

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ADP2147CB-130EVALZ相关器件

型号	品牌	获取价格	描述	数据表
ADP2147CB-150EVALZ	ADI	获取价格	Compact, 800 mA, 3 MHz, Simple DVS, Buck Regulator Input voltage: 2.3 V to 5.5 V
ADP2147CB-170EVALZ	ADI	获取价格	Compact, 800 mA, 3 MHz, Simple DVS, Buck Regulator Input voltage: 2.3 V to 5.5 V
ADP-2-1-6	MINI	获取价格	Splitter And Combiner, 1MHz Min, 500MHz Max, 1dB Insertion Loss-Max, CASE CD636, 6 PIN
ADP2164	ADI	获取价格	6.5 V, 4 A, High Efficiency
ADP2164ACPZ-1.0-R7	ADI	获取价格	6.5 V, 4 A, High Efficiency
ADP2164ACPZ-1.2-R7	ADI	获取价格	6.5 V, 4 A, High Efficiency
ADP2164ACPZ-1.5-R7	ADI	获取价格	6.5 V, 4 A, High Efficiency
ADP2164ACPZ-1.8-R7	ADI	获取价格	6.5 V, 4 A, High Efficiency
ADP2164ACPZ-2.5-R7	ADI	获取价格	6.5 V, 4 A, High Efficiency
ADP2164ACPZ-3.3-R7	ADI	获取价格	6.5 V, 4 A, High Efficiency

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