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Advanced Analog Technology

AAT1346B Datasheet Preview

AAT1346B Datasheet

2A 15V Step-Down DC-DC Converter

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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
Page 1 of 12




Advanced Analog Technology

AAT1346B Datasheet Preview

AAT1346B Datasheet

2A 15V Step-Down DC-DC Converter

No Preview Available !

Advanced Analog Technology, Inc.
June 2008
AAT1346A/B/C
ORDERING INFORMATION
DEVICE
TYPE
PART NUMBER
AAT1346A AAT1346A-S-T
PACKAGE PACKING
S:SOP8
T: Tape
and reel
TEMP.
RANGE
40 C to +85 C
MARKING
MARKING
DESCRIPTION
AAT1346A Device Type
XXXXXX Lot no.(6~9Digits)
AAT1346B AAT1346B-S-T
S:SOP8
T: Tape
and reel
40 C to +85 C AAT1346B Device Type
XXXXXX Lot no.(6~9Digits)
AAT1346C AAT1346C-S-T
S:SOP8
T: Tape
and reel
NOTE: All AAT products are lead free and halogen free.
40 C to +85 C
AAT1346C Device Type
XXXXXX Lot no.(6~9Digits)
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage ( VDD , SW)
Pin Voltage (IN, ENC, EO)
SW Current
Operating Temperature Range
Storage Temperature Range
SYMBOL
VDD
VI
ISW
TC
Tstorage
VALUE
0.3 to 15.0
0.3 to ( VDD +0.3)
6.5
40 C to +85 C
65 C to +150 C
UNIT
V
V
A
C
C
台灣類比科技股份有限公司
Advanced Analog Technology, Inc.
Version 1.00
Page 2 of 12


Part Number AAT1346B
Description 2A 15V Step-Down DC-DC Converter
Maker Advanced Analog Technology
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AAT1346B Datasheet PDF





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