Advanced Analog Technology, Inc.


– 台灣類比科技股份有限公司 –
– Advanced Analog Technology, Inc. –
Page 1 of 16 V1.0
AAT1341
Details are subject to change without notice

2-CHANNEL SWITCHING REGULATOR

FEATURES
z Complete PWM Power Control Circuitry
z Under-Voltage Lockout (UVLO) Protection
z Open Drain Output
z Output Short Circuit Protection
z Low Dissipation Current：1.6mA
z Dead-Time Control：0 % to 100%
z Wide Operating Frequency：
10kHz to 800kHz
z
DD
V Range：4.0V to 14.0V

PIN CONFIGURATION

SOP-16 PACKAGE
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IE1
OE1
DTC1
GND
OUT1
NE2
SCP
IE2
OE2
DTC2
OUT2
TOP VIEW
NE1
V
DD
REF
Vt
C
t
R


GENERAL DESCRIPTION
The AAT1341 provides an integrated two-channel
pulse-width-modulation (PWM) solution for the
power supply of DC-DC system; this device offers
system engineers the flexibility to tailor-make the
power supply circuitry for specific applications.
Each channel contains its own error amplifier,
PWM comparator, dead–time control (DTC), and
output driver. The under-voltage protection,
oscillator, short circuit protection and voltage
reference circuit are the common features of the two
channels.
Both channels of AAT1341 can be used for DC-DC
converter operations including step-up, step-down,
and inverting. Dead-time control can be set to
provide 0% to 100% dead-time through a resistive
divider network. Soft-start can be implemented by
paralleling the DTC resistor with a capacitor. Two
dead-time control inputs are assigned for CH1 and
CH2 individually, and dead-time control inputs can
be used to control on / off operation.
With a minimal number of external components, the
AAT1341 offers a simple and cost effective
solution.