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AAT1343

Advanced Analog Technology
Part Number AAT1343
Manufacturer Advanced Analog Technology
Description 2-CHANNEL SWITCHING REGULATOR
Published Jul 26, 2006
Detailed Description www.DataSheet4U.com Advanced Analog Technology, Inc. AAT1343 Details are subject to change without notice 2-CHANNEL SW...
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AAT1343
AAT1343

Overview
www.
DataSheet4U.
com Advanced Analog Technology, Inc.
AAT1343 Details are subject to change without notice 2-CHANNEL SWITCHING REGULATOR FEATURES z Complete PWM Power Control Circuitry GENERAL DESCRIPTION The AAT1343 provides an integrated two-channel pulse-width-modulation (PWM) solution for the z Precision Reference¡G 2.
5V ± 1% (25 oC) power supply of DC-DC system; this device offers z Under-Voltage Lockout (UVLO) Protection the systems engineer flexibility to tailor-make the z Open Drain Output power supply circuitry for specific applications.
z Output Short Circuit Protection Each channel contains its own error amplifier, z Low Dissipation Current¡G 1.
6mA PWM comparator, dead–time control (DTC) and z Dead-Time Control¡G 0 % to 100% output driver.
The under-voltage protection, oscillator, short circuit protection and voltage z Wide Operating Frequency¡G reference circuit are the common features for these 10kHz to 800kHz two channels.
DataSheet4U.
com z VDD Range¡G 4.
0V to 14.
0V DataShee Both channels of AAT1343 can be used for DC-DC converter operations including step-up, step-down, PIN CONFIGURATION and inverting.
Dead-time control can be set to provide 0% to 100% dead-time through a resistive TOP VIEW divider network.
Soft-start can be implemented by Ct VREF 16 1 paralleling the DTC resistor with a capacitor.
Two Rt 15 SCP dead-time control inputs are assigned for channel 1 2 14 3 NE1 NE2 (CH1) and channel 2 (CH2) individually, and dead-time control inputs can be used to control on / 13 IE1 IE2 4 off operation.
12 5 OE1 OE2 With a minimal number of external components, the 11 6 DTC1 DTC2 AAT1343 offers a simple and cost effective 10 OUT2 7 OUT1 solution.
GND 8 9 VDD TSSOP-16 PACKAGE DataSheet4U.
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– Page 1 of 14 V1.
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DataSheet4U.
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AAT1343 PIN DESCRIPTION PIN NO.
1 NAME Ct I/O DESCRIPTION I External Timing Capacitor 2 ...


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