Advanced Analog Technology, Inc.
October 2007
AAT7301
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
4V to 15V 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
GENERAL DESCRIPTION
The AAT7301 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
short
driver,
circuit
under-voltage
protection,
oscillator,
protection and voltage reference circuit.
The AAT7301 contains one buck current mode PWM
with internal PMOS. In addition, a digital soft-start is
also included to prevent inrush current at startup.
AAT7301 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.
PIN CONFIGURATION
TYPICAL APPLICATION
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Advanced Analog Technology, Inc. –
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