DatasheetsPDF.com

AAT1108

Advanced Analog Technology
Part Number AAT1108
Manufacturer Advanced Analog Technology
Description 2-CHANNEL STEP-UP PWM CONTROLLERS
Published Aug 28, 2008
Detailed Description Advanced Analog Technology, Inc. AAT1108 Preliminary and Provisional 2-CHANNEL STEP-UP PWM CONTROLLERS WITH ADJUSTABLE ...
Datasheet PDF File AAT1108 PDF File

AAT1108
AAT1108

Overview
Advanced Analog Technology, Inc.
AAT1108 Preliminary and Provisional 2-CHANNEL STEP-UP PWM CONTROLLERS WITH ADJUSTABLE LDO Features www.
DataSheet4U.
com z z z z z z z Complete PWM Power Control Circuitry Adjustable LDO Regulator Under-voltage Lockout Protection Totem pole Output Output Short Circuit Protection Dead Time Control¡G 0 to 100% Wide Operating Frequency¡G 10kHz to 800kHz General Description The AAT1108 series 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.
The AAT1108 contains two boost (step-up) exclusive circuits.
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.
The maximum output currents of LDO regulator can be enlarged by connect a N_MOS FET (or NPN bipolar) as a source follow stage at out3 pin.
*Spec is subject to change without notice in this document.
Pin Configuration TOP VIEW CT RT INV3 INV1 FB1 DTC1 OUT1 GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Vref SCP OUT3 INV2 FB2 DTC2 OUT2 VDD (TSSOP-16 PACKAGE) – – ¥xÆWÃþ¤ñ¬ì§ÞªÑ¥÷¦³-½q Advanced Analog Technology, Inc.
V 0.
1 Advanced Analog Technology, Inc.
AAT1108 Pin Description Pin # 1 2 www.
DataSheet4U.
com Name CT RT INV3 INV1 FB1 DTC1 OUT1 GND VDD OUT2 DTC2 FB2 INV2 OUT3 SCP Vref I/O I External timing capacitance I External timing resistance I Negative input for LDO amplifier Description 3 4 5 6 7 8 9 I Negative i...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)