Datasheet
0.3A 100KHz 80V Buck DC to DC Converter XL7045
Rev 1.1 www.xlsemi.com
1
Features
Wide 10V to 80V Operation Voltage
Output Adjustable from 1.25V to 20V
Maximum Duty Cycle 100%
Minimum Drop Out 1V
Fixed 100KHz Switching Frequency
Max. IOUT=0.3A at VOUT=5V
Max. IOUT=0.2A at VOUT=12V or 15V
Internal Optimize HV Power Transistor
High efficiency up to 84%
Excellent line and load regulation
Built in thermal shutdown function
Built in current limit function
Built in output short Protection Function
SOP8-EP (Exposed PAD) package
Applications
Ebike Controller Power Supply
Telecom / Networking Equipment
General Description
The XL7045 is a 100KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 0.3A load with high
efficiency, low ripple and excellent line and
load regulation. Requiring a minimum
number of external components, the regulator
is simple to use and include internal
frequency compensation and a
fixed-frequency oscillator.
The PWM control circuit is able to adjust the
duty ratio linearly from 0 to 100%. An enable
function, an over current protection function
is built inside. When output short protection
function happens, the operation frequency
will be reduced from 100KHz to 15KHz. An
internal compensation block is built in to
minimize external component count.
Figure1. Package Type of XL7045
