Advanced Analog Technology, Inc.
AAT1109
Details are subject to change without notice.
ONE-CHANNEL STEP-UP PWM CONTROLLER
FEATURES
Under-Voltage Lockout (UVLO) Protection
Totem Pole Output
Output Short Circuit Protection
Soft-Start Function
Wide Operating Frequency：
10 kHz to 1MHz
Shutdown Control
Low Dissipation Current :
Typical
1.6mA
in Operation
SOP-8 & TSSOP-8 Package Available
GENERAL DESCRIPTION
The AAT1109 is a one-channel step-up PWM
controller incorporating a soft-start and a short
circuit protection (SCP) function.
This device consists of an on-chip voltage reference,
error amplifier, pulse width modulation controller,
under-voltage lockout protection, soft-start, and
short circuit protection circuits. Switching
frequency up to 1MHz is set by an external resistor
and capacitor. Soft-start time can be implemented
by the SCP capacitor.
Additionally, a chip-enable feature is also provided
to power down and reduce the current supply
to
10µA
. With the minimal external components,
the AAT1109 offers a simple and economical
solution.
PIN CONFIGURATION
–
台灣類比科技股�½有限公司
–
–
Advanced Analog Technology, Inc
.
–
Page 1 of 18
V 1.0
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
