XL7045 Converter Datasheet

XL7045 Datasheet, PDF, Equivalent


Part Number

XL7045

Description

0.3A 100KHz 80V Buck DC to DC Converter

Manufacture

Xlsemi

Total Page 10 Pages
Datasheet
Download XL7045 Datasheet


XL7045
0.3A 100KHz 80V Buck DC to DC Converter
Datasheet
XL7045
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.
Rev 1.1
Figure1. Package Type of XL7045
www.xlsemi.com
1

XL7045
0.3A 100KHz 80V Buck DC to DC Converter
Pin Configurations
Datasheet
XL7045
The Exposed PAD is GND
Figure2. Pin Configuration of XL7045
Table 1 Pin Description
Pin Number
1
2
3
4
5
6
7~8
Pin Name
VIN
SW
FB
GND
CSP
CSN
NC
Description
Supply Voltage Input Pin. XL7045 operates from a 10V to 80V
DC voltage. Bypass Vin to GND with a suitably large capacitor
to eliminate noise on the input.
Power Switch Output Pin (SW). Output is the switch node that
supplies power to the output.
Feedback Pin (FB). Through an external resistor divider
network, Feedback senses the output voltage and regulates it.
The feedback threshold voltage is 1.25V.
Ground Pin. Care must be taken in layout. This pin should be
placed outside of the Schottky Diode to output capacitor ground
path to prevent switching current spikes from inducing voltage
noise into XL7045. The exposed PAD is GND.
Current Sense Positive Terminal.
Current Sense Negative Terminal.
No Connected.
Rev 1.1
www.xlsemi.com
2


Features 0.3A 100KHz 80V Buck DC to DC Converter Datasheet XL7045 Features „ Wide 10V to 80V Operation Voltage „ Output Adj ustable from 1.25V to 20V „ Maximum Du ty Cycle 100% „ Minimum Drop Out 1V „ Fixed 100KHz Switching Frequency „ Ma x. IOUT=0.3A at VOUT=5V „ Max. IOUT=0. 2A at VOUT=12V or 15V „ Internal Optim ize HV Power Transistor „ High efficie ncy up to 84% „ Excellent line and loa d regulation „ Built in thermal shutdo wn function „ Built in current limit f unction „ Built in output short Protec tion Function „ SOP8-EP (Exposed PAD) package Applications „ Ebike Controlle r Power Supply „ Telecom / Networking Equipment General Description The XL70 45 is a 100KHz fixed frequency PWM buck (step-down) DC/DC converter, capable o f driving a 0.3A load with high efficie ncy, low ripple and excellent line and load regulation. Requiring a minimum nu mber of external components, the regula tor is simple to use and include intern al frequency compensation and a fixed-frequency oscillator. The PWM control cir.
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