Diodes PAM2301 User Manual download pdf

PAM2301

Document number: DSxxxxx Rev. 2 - 7

1 of 13

www.diodes.com

January 2013

PAM2301

Product Line o

Diodes Incorporated

800mA STEP-DOWN DC-DC CONVERTER

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 PAM2301 provides a power-saving Pulse-

Skipping Modulation (PSM) mode to reduce quiescent current under

light load operation to save power.

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 rectifier 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 0.1mA. Other

key features include under-voltage lockout to prevent deep battery

discharge.

The PAM2301 is available in TSOT25 package.

Features

• 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

• 5-Pin Small TSOT25 Package

• Pb-Free Package

Pin Assignments

Applications

• Cellular Phone

• Portable Electronics

• Wireless Devices

• Cordless Phone

• Computer Peripherals

• Battery-Powered Widgets

• Electronic Scales

• Digital Frame

Typical Applications Circuit

Fixed Output Voltage Adjustable Output Voltage

⎟

⎠

⎞

⎜

⎝

⎛

+×=

16.0

TSOT25

1 2 3 4 5 6 ... 12 13

Summary of Contents

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