Converter. XL4016 Datasheet

XL4016 Datasheet PDF


XL4016
8A 180KHz 40V Buck DC to DC Converter
Features
n Wide 8V to 40V Input Voltage Range
n Output Adjustable from 1.25V to 36V
n Maximum Duty Cycle 100%
n Minimum Drop Out 0.3V
n Fixed 180KHz Switching Frequency
n 8A Constant Output Current Capability
n Internal Optimize Power MOSFET
n High efficiency up to 96%
n Excellent line and load regulation
n Built in thermal shutdown function
n Built in current limit function
n Built in output short protection function
n Built in input over voltage protection
n Available in TO220-5L package
Applications
n LCD Monitor and LCD TV
n Portable instrument power supply
n Telecom / Networking Equipment
Datasheet
XL4016
General Description
The XL4016 is a 180 KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 8A 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 over
current protection function is built inside.
When short protection function happens, the
operation frequency will be reduced from
180KHz to 48KHz. An internal compensation
block is built in to minimize external
component count.
Rev 1.2
Figure1. Package Type of XL4016
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Part XL4016
Description 8A 180KHz 40V Buck DC to DC Converter
Feature XL4016; Datasheet 8A 180KHz 40V Buck DC to DC Converter Features n n n n n n n n n n n n n n Wide 8V to 40V .
Manufacture Xlsemi
Datasheet
Download XL4016 Datasheet

Datasheet 8A 180KHz 40V Buck DC to DC Converter Features n n XL4016 Datasheet





XL4016
8A 180KHz 40V Buck DC to DC Converter
Pin Configurations
Datasheet
XL4016
Figure2. Pin Configuration of XL4016 (Top View)
Table 1 Pin Description
Pin Number
1
2
3
4
5
Pin Name
GND
FB
SW
VC
VIN
Description
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 XL4016.
Feedback Pin (FB). Through an external resistor divider
network, FB senses the output voltage and regulates it. The
feedback threshold voltage is 1.25V.
Power Switch Output Pin (SW). SW is the switch node that
supplies power to the output.
Internal Voltage Regulator Bypass Capacity. In typical system
application, The VC pin connect a 1uf capacity to VIN.
Supply Voltage Input Pin. XL4016 operates from a 8V to 40V
DC voltage. Bypass Vin to GND with a suitably large
capacitor to eliminate noise on the input.
Rev 1.2
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2



XL4016
8A 180KHz 40V Buck DC to DC Converter
Function Block
Datasheet
XL4016
Figure3. Function Block Diagram of XL4016
Typical Application Circuit
Figure4. XL4016 Typical Application Circuit (VIN=8V~40V, VOUT=5V/8A)
Rev 1.2
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3






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