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ADP2108AUJZ-1.0-R7

更新时间： 2024-11-14 12:33:19

品牌	Logo	应用领域
亚德诺 - ADI		转换器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管 PC
页数	文件大小	规格书
20页	1331K
描述
Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter

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Compact, 600 mA, 3 MHz,

Step-Down DC-to-DC Converter

Data Sheet

ADP2108

FEATURES

GENERAL DESCRIPTION

Peak efficiency: 95%

The ADP2108 is a high efficiency, low quiescent current step-

down dc-to-dc converter manufactured in two different

packages. The total solution requires only three tiny external

components. It uses a proprietary, high speed current mode,

constant frequency PWM control scheme for excellent stability

and transient response. To ensure the longest battery life in

portable applications, the ADP2108 has a power save mode that

reduces the switching frequency under light load conditions.

3 MHz fixed frequency operation

Typical quiescent current: 18 μA

Maximum load current: 600 mA

Input voltage: 2.3 V to 5.5 V

Uses tiny multilayer inductors and capacitors

Current mode architecture for fast load and line

transient response

100% duty cycle low dropout mode

Internal synchronous rectifier

Internal compensation

The ADP2108 runs on input voltages of 2.3 V to 5.5 V, which

allows for single lithium or lithium polymer cell, multiple alkaline

or NiMH cell, PCMCIA, USB, and other standard power sources.

The maximum load current of 600 mA is achievable across the

input voltage range.

Internal soft start

Current overload protection

Thermal shutdown protection

Shutdown supply current: 0.2 μA

Available in

5-ball WLCSP

5-lead TSOT

The ADP2108 is available in fixed output voltages of 3.3 V, 3.0 V,

2.5 V, 2.3 V, 1.82 V, 1.8 V, 1. 5 V, 1.3 V, 1.2 V, 1.1 V, and 1.0 V. All

versions include an internal power switch and synchronous rect-

ifier for minimal external part count and high efficiency. The

ADP2108 has an internal soft start and is internally compensated.

During logic controlled shutdown, the input is disconnected

from the output and the ADP2108 draws less than 1 μA from

the input source.

Supported by ADIsimPower™ design tool

APPLICATIONS

PDAs and palmtop computers

Wireless handsets

Digital audio, portable media players

Digital cameras, GPS navigation units

Other key features include undervoltage lockout to prevent deep

battery discharge and soft start to prevent input current over-

shoot at startup. The ADP2108 is available in 5-ball WLCSP and

5-lead TSOT packages. The ADP2109 provides the same features

and operations as the ADP2108 and has the additional function

of a discharge switch in the WLCSP package.

TYPICAL APPLICATIONS CIRCUIT

ADP2108

1µH

2.3V TO 5.5V

4.7µF

1.0V TO 3.3V

10µF

VIN

OFF

GND

Figure 1.

Rev. G

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

rightsof third parties that may result fromits 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 andregisteredtrademarks are the property of their respective owners.

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

Tel: 781.329.4700 www.analog.com

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ADP2108AUJZ-1.0-R7 替代型号

型号	品牌	替代类型	描述	数据表
ADP2108AUJZ-1.82-R7	ADI	完全替代	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
ADP2108AUJZ-3.3-R7	ADI	类似代替	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
ADP2108AUJZ-1.8-R7	ADI	类似代替	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter

与ADP2108AUJZ-1.0-R7相关器件

型号	品牌	获取价格	描述	数据表
ADP2108AUJZ-1.1-R7	ADI	获取价格	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
ADP2108AUJZ-1.2-R7	ADI	获取价格	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
ADP2108AUJZ-1.3-R7	ADI	获取价格	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
ADP2108AUJZ-1.5-R7	ADI	获取价格	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
ADP2108AUJZ-1.82-R7	ADI	获取价格	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
ADP2108AUJZ-1.8-R7	ADI	获取价格	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
ADP2108AUJZ-2.3-R7	ADI	获取价格	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
ADP2108AUJZ-2.5-R7	ADI	获取价格	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
ADP2108AUJZ-3.0-R7	ADI	获取价格	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
ADP2108AUJZ-3.3-R7	ADI	获取价格	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter

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