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Advanced Analog Technology - 2A 15V Step-Down DC-DC Converter

Numéro de référence AAT1346C
Description 2A 15V Step-Down DC-DC Converter
Fabricant Advanced Analog Technology 
Logo Advanced Analog Technology 





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AAT1346C fiche technique
Advanced Analog Technology, Inc.
June 2008
AAT1346A/B/C
Product information presented is for internal use within AAT Inc. only. Details are subject to change without notice
2A 15V Step-Down DC-DC Converter
FEATURES
Buck PWM with Internal PMOS
4.5V to 15.0V Input Voltage Range
Max. 2A Output Current
Under-Voltage Lockout (UVLO) Protection
Internal Short Circuit and Thermal Protection
Internal Soft-Start
Fixed Switching Frequency (380kHz / 47kHz)
2 µA Shutdown Current
SOP- 8 Package
PIN CONFIGURATION
GENERAL DESCRIPTION
The AAT1346A/B/C is a 2A 15V step-down converter,
which provides an integrated one-channel PWM
solution for the power supply of DC-DC system. It
offers system engineers the flexibility to tailor-make the
power supply circuitry for specific applications.
The buck PWM contains enable control signal, error
amplifier, PWM comparator, output driver,
under-voltage protection, oscillator, short circuit
protection and voltage reference circuit.
The AAT1346A/B/C contains one buck current mode
PWM with internal PMOS. In addition, a digital
soft-start is also included to prevent inrush current at
startup. AAT1346A/B/C comes with a fixed 380kHz
oscillator, however, when the feedback voltage is lower
than 0.7V, the switching frequency changes to 47kHz
and returns to 380kHz after the short-circuit is
released.
TYPICAL APPLICATION
Power In
VDD
EO SW
VOUT
ENC
IN
ENC
GND
台灣類比科技股份有限公司
Advanced Analog Technology, Inc.
Version 1.00
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