Datasheet > ADP2109

ADP2109

更新时间： 2024-11-27 12:53:19

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	861K
描述
Compact 600 mA, 3 MHz, Step-Down Converter with Output Discharge

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

ADP2109 数据手册

Compact 600 mA, 3 MHz, Step-Down

Converter with Output Discharge

Data Sheet

ADP2109

FEATURES

GENERAL DESCRIPTION

Peak efficiency: 95%

Discharge switch function

The ADP2109 is a high efficiency, low quiescent current step-

down dc-to-dc converter with an internal discharge switch that

allows automatic discharge of the output capacitor in an ultra-

small 5-ball WLCSP package.

Fixed frequency operation: 3 MHz

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 total solution requires only three tiny external components.

It uses a proprietary high speed current mode and constant

frequency pulse-width modulation (PWM) control scheme for

excellent stability, and transient response. To ensure the longest

battery life in portable applications, the ADP2109 has a power

save mode that reduces the switching frequency under light

load conditions.

The ADP2109 runs on input voltages of 2.3 V to 5.5 V, which

allow for single lithium or lithium polymer cell, multiple alkaline

or NiMH cells, 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

5-ball WLCSP

Supported by ADIsimPower™ design tool

The ADP2109 is available in fixed output voltages of 1.8 V, 1.5 V,

1.2 V, and 1.0 V. All versions include an internal power switch

and synchronous rectifier for minimal external part count and

high efficiency. The ADP2109 has an internal soft start and internal

compensation. During logic-controlled shutdown, the input is

disconnected from the output and the ADP2109 draws less than

1 μA from the input source.

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 overshoot

at startup. The ADP2109 is available in a 5-ball WLCSP.

A similar converter, the ADP2108, provides the same features

and operations as the ADP2109 without the discharge switch

and is available in both WLCSP and TSOT packages with

additional output voltages.

TYPICAL APPLICATIONS CIRCUIT

1µH

2.3V TO 5.5V

1.0V TO 1.8V

VIN

10µF

4.7µF

ADP2109

OFF

GND

Figure 1.

Rev. B

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

12 3 4 5 6 7...16

中文翻译

下载PDF

与ADP2109相关器件

型号	品牌	获取价格	描述	数据表
ADP-2-10W-75	MINI	获取价格	Combiner, 5MHz Min, 1000MHz Max, 1.1dB Insertion Loss-Max, CASE CD636, 6 PIN
ADP-2-10W-75+	MINI	获取价格	Combiner, 5MHz Min, 1000MHz Max, 1.1dB Insertion Loss-Max, ROHS COMPLIANT, CASE CD636, 6 P
ADP2114	ADI	获取价格	Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator
ADP2114-2PH-EVALZ	ADI	获取价格	Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator
ADP2114ACPZ-R2	ADI	获取价格	Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator
ADP2114ACPZ-R7	ADI	获取价格	Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator
ADP2114-EVALZ	ADI	获取价格	Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator
ADP2116	ADI	获取价格	Configurable, Dual 3 A/Single 6 A, Synchronous, Step-Down DC-to-DC Regulator
ADP2116ACPZ-R7	ADI	获取价格	Configurable, Dual 3 A/Single 6 A, Synchronous, Step-Down DC-to-DC Regulator
ADP2116-EVALZ	ADI	获取价格	Configurable, Dual 3 A/Single 6 A, Synchronous, Step-Down DC-to-DC Regulator

与ADP2109相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

47
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

35
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

64
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

61

产品中心

服务支持

精选活动

关于我们

帮助中心

ADP2109

ADP2109 数据手册

与ADP2109相关器件

与ADP2109相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

ADP2109

ADP2109 数据手册

与ADP2109相关器件

与ADP2109相关文章

您还可以找

您在本页遇到什么问题？