Advanced Analog Technology, Inc.


– 台灣類比科技股份有限公司 –
Advanced Analog Technology, Inc. V 1.0
AAT1104/AAT1104A


2-CHANNEL SWITCHING REGULATOR CONTROLLER

Features
z Complete PWM Power Control Circuitry
z Precision Reference： 2.505V±1% (25
o
C)
z Under-voltage Lockout 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 VDD range： 4.0V to 6.5V

Pin Configuration

1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CT
RT
INV1
FB1
DTC1
GND
OUT1
V
ref
NON2
SCP
INV2
FB2
DTC2
OUT2
TOP VIEW
(TSSOP-16 PACKAGE)
NON1
V
DD
General Description
The AAT1104/AAT1104A provides an integrated
two-channel pulse-width-modulation (PWM)
solution for the power supply of DC-DC system,
this device offers the systems engineer the
flexibility to tailor the power supply circuitry to a
specific application. Each channel contains its own
error amplifier, PWM comparator, dead–time
control and output driver. The under-voltage
protection, oscillator, short circuit protection and
voltage reference circuit are common for the two
channels.
Both channel of AAT1104/AAT1104A can be used
for DC/DC converter operations including step-up,
step-down, and inverting. Dead-time control (DTC)
can be set to provide 0% to 100% dead time by
resistive divider network. Soft start can be
implemented by paralleling the DTC resistor with a
capacitor. Two dead time control inputs are
assigned for Ch-1 and Ch-2 individually, and dead
time control inputs can be used to control on / off
operation.
With a minimum number of external components,
the AAT1104/AAT1104A offers a simple and cost
effective solution.

*Spec is subject to change without notice in this document.