Datasheet > PAM2301CAAB250

PAM2301CAAB250

更新时间： 2024-09-21 05:59:31

品牌	Logo	应用领域
PAM		转换器
页数	文件大小	规格书
13页	898K
描述
800mA Step-Down DC-DC Converters

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PAM2301CAAB250 数据手册

PAM2301

800mA Step-Down DC-DC Converters

Features

General Description

The PAM2301 is a step-down current-mode, DC-

DC converter. At heavy load, the constant-

frequency PWM control performs excellent

stability and transient response. To ensure the

longest battery life in portable applications, the

Efficiency up to 96%

Only 40μA(TYP.) Quiescent Current

Output Current: Up to 800mA

Internal Synchronous Rectifier

1.5MHz Switching Frequency

Soft Start

Under-Voltage Lockout

Short Circuit Protection

Thermal Shutdown

PAM2301 provides

a power-saving Pulse-

Skipping Modulation (PSM) mode to reduce

quiescent current under light load operation to

save power.

5-pin Small SOT23-5 Package

Pb-Free Package

The PAM2301 supports a range of input voltages

from 2.5V to 5.5V, allowing the use of a single

Li+/Li-polymer cell, multiple Alkaline/NiMH cell,

USB, and other standard power sources. The

output voltage is adjustable from 0.6V to the input

voltage, while the part number suffix PAM2301-

XX indicates pre-set output voltage of 3.3V, 2.8V,

2.5V, 1.8V, 1.5V, 1.2V or adjustable. All versions

employ internal power switch and synchronous

rectifierfor to minimize external part count and

realize high efficiency. During shutdown, the input

is disconnected from the output and the shutdown

current is less than 0.1ꢀA. Other key features

include under-voltage lockout to prevent deep

battery discharge.

Applications

Cellular Phone

Portable Electronics

Wireless Devices

Cordless Phone

Computer Peripherals

Battery Powered Widgets

Electronic Scales

Digital Frame

The PAM2301 is available in SOT23-5 package.

Typical Application

Fixed Output Voltage

Adjustable Output Voltage

4.7μH

V_IN

4.7μH

V_IN

VIN SW

EN VOUT

VIN SW

10μF

C_IN

10μF

20pF

C_IN

10μF

GND

= 0.6´ 1+

Power Analog Microelectronics,Inc

www.poweranalog.com

09/2008 Rev 1.3

12 3 4 5 6 7...13

中文翻译

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