AAT1109A Datasheet, PDF (1/10 Pages) Advanced Analogic Technologies – ONE-CHANNEL BOOST SWITCHING REGULATOR

Advanced Analog Technology, Inc.
Preliminary and Provisional
AAT1109A
ONE-CHANNEL BOOST SWITCHING REGULATOR
Features
z Under-voltage lockout protection
z Totem pole output
z Output short circuit protection
z Incorporates soft start function
z Wide operating frequency
10kHz to 1MHz
z Shut down control
z Low dissipation current :
Typical 1.6mA in operation
z Sop-8 & Tssop-8 package available
Pin Configuration
TOP VIEW
General Description
The AAT1109A is a one-channel switching
regulator control IC incorporating a soft start
function and a short circuit protection function.
Each device consists of an on-chip voltage reference,
error amplifier, pulse width modulation controller,
under-voltage protection, soft start and short circuit
protection circuits. Switching frequencies up to
1MHz are set by an external resistor and capacitor.
Soft-start time can be implemented by the SCP
capacitor.
Additionally, a chip enable feature is provided to
power down reducing the supply current to 10uA.
With a minimum number of external components,
the AAT1109A offers a simple and cost effective
solution.
-IN
1
SCP 2
Vcc
3
CE
4
8
FB
7
OSC
6
GND
5
OUT
(SOP-8 PACKAGE)
(TSSOP-8 PACKAGE)
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Advanced Analog Technology, Inc. –
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