Diodes AP3427M Manuel d'utilisateur

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Preliminary Datasheet
Dual 1A, 1.5MHZ Synchronous Step-down DC-DC Converter AP3427M
Mar. 2013 Rev. 1.0 BCD Semiconductor Manufacturing Limited
1
General Description
The AP3427M is a high efficiency step-down dual
channel DC-DC voltage converter. The chip
operation is optimized by peak-current mode
architecture with built-in synchronous power
MOSFET switchers. The oscillator and timing
capacitors are all built-in providing an internal
switching frequency of 1.5MHz that allows the use of
small surface mount inductors and capacitors for
portable product implementations.
Integrated Soft Start (SS), Under Voltage Lock Out
(UVLO), Thermal Shutdown Detection (TSD) and
Short Circuit Protection are designed to provide
reliable product applications.
The device is available in adjustable output voltage
ranging from 0.6V to 0.9×V
IN
when input voltage
range is from 2.5V to 5.5V, and is able to deliver up
to 1A.
The AP3427M is available in standard DFN-3×3-10
package.
Features
High Efficiency Buck Power Converter
Output Current: 1.0A
• Low R
DS(ON)
Internal Switches:200mΩ (V
IN
=5V)
Adjustable Output Voltage from 0.6V to 0.9×V
IN
Wide Operating Voltage Range: 2.5V to 5.5V
Built-in Power Switches for Synchronous
Rectification with High Efficiency
• Feedback Voltage: 600mV
1.5MHz Constant Frequency Operation
• Thermal Shutdown Protection
Low Drop-out Operation at 100% Duty Cycle
Input Over Voltage Protection
No Schottky Diode Required
Applications
Post DC-DC Voltage Regulation
PDA and Notebook Computer
Figure 1. Package Type of AP3427M
DFN-3×3-10
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Résumé du contenu

Page 1

Preliminary Datasheet Dual 1A, 1.5MHZ Synchronous Step-down DC-DC Converter AP3427M Mar. 2013

Page 2

Preliminary Datasheet Dual 1A, 1.5MHZ Synchronous Step-down DC-DC Converter AP3427M Mar. 2013

Page 3 - TR: Tape & Reel

IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the

Page 4 - ESD (Machine Model)

Preliminary Datasheet Dual 1A, 1.5MHZ Synchronous Step-down DC-DC Converter AP3427M Mar. 2013

Page 5 - Electrical Characteristics

Preliminary Datasheet Dual 1A, 1.5MHZ Synchronous Step-down DC-DC Converter AP3427M Mar. 2013

Page 6 - Efficiency (%)

Preliminary Datasheet Dual 1A, 1.5MHZ Synchronous Step-down DC-DC Converter AP3427M Mar. 2013

Page 7 -

Preliminary Datasheet Dual 1A, 1.5MHZ Synchronous Step-down DC-DC Converter AP3427M Mar. 2013

Page 8

Preliminary Datasheet Dual 1A, 1.5MHZ Synchronous Step-down DC-DC Converter AP3427M Mar. 2013

Page 9

Preliminary Datasheet Dual 1A, 1.5MHZ Synchronous Step-down DC-DC Converter AP3427M Mar. 2013

Page 10 - PIN #1 IDENTIFICATION

Preliminary Datasheet Dual 1A, 1.5MHZ Synchronous Step-down DC-DC Converter AP3427M Mar. 2013

Page 11

Preliminary Datasheet Dual 1A, 1.5MHZ Synchronous Step-down DC-DC Converter AP3427M Mar. 2013

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