IAT AT6145-KF Schematics
AT6145
Circuit Type
1.2MHz 2A SOT-26 Step Up DC-DC Converter
FEATURES
up to 93% Efficiency
Integrated 80mΩ Power MOSFET
2.3V to 24V Input Voltage
1.2MHz Fixed Switching Frequency
Internal 4A Switch Current Limit
Adjustable Output Voltage up to 28V
Internal Compensation
Automatic Pulse Frequency Modulation Mode
DESCRIPTION
The AT6145 is a constant frequency, 6-pin
SOT23-6L current mode step-up converter intended
for small, low power applications.
The AT6145 switches at 1.2MHz and allows the use
of tiny, low cost capacitors and inductors 2mm or
less in height. Internal soft-start results in small
inrush current and extends battery life.
The AT6145 features automatic shifting to pulse
Immense Advance Tech.
at Light Loads
SOT26 Package Available
APPLICATION
Battery-Powered Equipment
Set-Top Boxed
LCD Display
DSL and Cable Modems and Routers
Networking cards powered from PCI
SMPS Post-Regulator / DC-to-DC Modules
High-Efficiency Linear Power Supplies or PCI
express slots
frequency modulation mode at light loads.
The AT6145 includes under-voltage lockout, current
limiting, and thermal overload protection to prevent
damage in the event of an output overload.
The AT6145 is SOT26 Package Available
ORDER INFORMATION
PIN CONFIGURATIONS
AT 6145- KF R
IAT
Shipping:
R: Tape & Reel
KF: SOT-26
Rev1.0 Sep. 2015 www.iatiat.com
1
(TOP VIEW)
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AT6145
1.2MHz 2A SOT-26 Step Up DC-DC Converter
PIN DESCRIPTIONS
Pin Name Pin Description
Immense Advance Tech.
SW
GND
FB Feedback Input. The FB voltage is 0.6V. Connect a resistor divider to FB.
EN
VIN Input Supply Pin. Must be locally bypassed.
NC No connected.
Power Switching Output. SW is the switching node that supplies power to the output.
Connect the output LC filter from SW to the output load.
Ground.
Regulator On/Off Control Input. A high input at EN turns on the converter, and a low input
turns it off. When not used, connect EN to the input supply for automatic startup.
TYPICAL APPLICATION CIRCUITS
Figure1. Adjustable Output Voltage Regulator
Rev1.0 Sep. 2015 www.iatiat.com
2
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AT6145
1.2MHz 2A SOT-26 Step Up DC-DC Converter
BLOCK DIAGRAM
Immense Advance Tech.
Rev1.0 Sep. 2015 www.iatiat.com
3
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