Diodes PAM2319 User Manual download pdf

PAM2319

Document number: DSxxxxx Rev. 1 - 1

1 of 12

www.diodes.com

November 2012

PAM2319

Product Line o

Diodes Incorporated

DUAL HIGH-EFFICIENCY PWM STEP-DOWN DC-DC CONVERTER

Description

The PAM2319 is a dual step-down current-mode, DC-DC converter.

At heavy load, the constantf requency PWM control performs

excellent stability and transient response. To ensure the longest

battery life in portable applications, the PAM2319 provides a power-

saving Pulse-Skipping Modulation (PSM) mode to reduce quiescent

current under light load operation.

The PAM2319 supports a range of input voltages from 2.7V to 5.5V,

allowing the use of a single Li+/Li-polymer cell, multiple Alkaline/NiMH

cell, USB, and other standard power sources. The dual output

voltages are adjustable from 1.0V to 3.3V. Both channels 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

0.1µA. Other key features include under-voltage lockout, soft-start,

short circuit protection and thermal shutdown.

Features

 Supply Voltage: 2.7V to 5.5V

 Output Voltage:

 Vo1 ADJ/1000mA

 Vo2 ADJ/2000mA

 Low Quiescent Current: Channel 1: 40µA; Channel 2: 55µA

 High Efficiency:

 Switching Frequency: 3MHz(Channel 1)

2.5MHz(Channel 2)

 Internal Synchronous Rectifier

 Soft Start

 Under-Voltage Lockout

 Short Circuit Protection

 Thermal Shutdown

 Small W-DFN3X3-12L Pb-Free/Halogen Free Package

 RoHS/REACH Compliant

Pin Assignments

Applications

 Portable Electronics

 Personal Information Appliances

 Wireless and DSL Modems

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Summary of Contents

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Page 2 - Pin Descriptions

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Page 8 - Application Information

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Page 9 - Setting the Output Voltage

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Page 10

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Page 11 - Marking Information

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Diodes PAM2319 User Manual

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