AAT1104 Datasheet, PDF (1/11 Pages) Advanced Analog Technology, Inc. – 2-CHANNEL SWITCHING REGULATOR CONTROLLER

Advanced Analog Technology, Inc.
AAT1104/AAT1104A
2-CHANNEL SWITCHING REGULATOR CONTROLLER
Features
z Complete PWM Power Control Circuitry
z Precision Reference 2.505V±1% (25 ^oC)
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
TOP VIEW
CT ₁
RT ₂
NON1 3
INV1 ₄
FB1 5
16
V_ref
15 SCP
14 NON2
13 INV2
12 FB2
DTC1 6
11 _DTC2
OUT1 7
10 OUT2
GND ⁸
9
V_DD
(TSSOP-16 PACKAGE)
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.
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Advanced Analog Technology, Inc.
V 1.0