DC Step Down Voltage Constant Current Buck Regulator Battery Charger LED Driver

Description

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Description
Tips:
If you need Large quantity, please contact us, we can wholesales. Thanks!
Tips:
We can provide wholesale if you need large quantity, please contact us. Thanks.
Notes: When use this module, can not combine input GND and output GND.
Features:
Brand new and high quality.
Input voltage range:6～38VDC(Note:input voltage not exceeding 38V)
Output voltage range:1.25-36VDC adjustable
Output current:0-5A
Output power: 75W
High efficiency up to 96%
Built in thermal shutdown function
Built in current limit function
Built in output short protection function
Input reverse polarity protection: None (if required, high current diode in series with the input).
Product Size: 6.2cm x 2.5cm .
Applications:
1.Use as a normal buck modules with over-current protection capabilities
Usage:
( 1 ) adjust constant voltage(CV) potentiometer, the output voltage reaches the voltage value you want
( 2 ) use a multimeter(10A or 20A) to measure the output current ( directly connect the two leads to the output ) , while adjusting potentiometer allows constant output current reaches a predetermined overcurrent protection value. ( For example, the meter displays the current value of 4A, then you can use the module to a maximum current of 4A,  4A current to constant voltage constant current when the red light is on, otherwise the light off )
Note : When used in this state , since the output of 0.05 ohm current sampling resistor , there will be 0 ~ 0.3V voltage drop across the load is connected , this is normal ! This drop is not being pulled down your load , but dropped the sampling resistor.
2.As a battery charger
Module without constant function can not be used to charge the battery , because the complete consumption of battery charger great pressure, leading the charge current is too large , causing damage to the battery , so when the battery begins to use a constant current charging when the charge to a certain extent, when to automatically switch back to the constant voltage charging .
Usage:
( 1 ) Make sure you need to charge the battery float voltage and charging current ; ( if lithium parameters 3.7V/2200mAh, then the float voltage is 4.2V, the maximum charging current 1C, ie 2200mA)
( 2 ) under no-load conditions, the multimeter to measure the output voltage adjustment potentiometer allows constant output voltage reaches the float voltage; ( if to 3.7V rechargeable lithium battery , the output voltage can be adjusted to 4.2V )
( 3 ) with a multimeter to measure the output current range 10A short circuit current ( directly to the two leads can be connected to the output ), while adjusting potentiometer allows constant output current reaches a predetermined charge current value
( 4 ) Charge transfer lamp current: 0.1 times the factory default charge current; ( battery during the charging current is gradually reduced , and gradually into the charging by the constant current constant voltage charging , if the charging current is set 1A, then when charging current is less than 0.1A when blue lights turned off, the green light is on, then the battery is fully charged )
( 5 ) connected to the battery charge .
( 1,2,3,4 steps : input termination power output of the load is not connected to the battery )
3.Is used as a high-power LED constant current driver module
( 1 ) determine the work that you need to drive the LED current and maximum operating voltage ;
( 2 ) No-load conditions, the multimeter to measure the output voltage adjustment potentiometer allows constant output voltage reaches the maximum operating voltage LED ;
( 3 ) 10A current with a multimeter measuring the output short-circuit current file, and adjust the constant current potentiometer allows the output current reaches a predetermined LED working current ;
( 4 ) connected to the LED, test machine.
( Step 1,2,3 : input connected to the power supply , the output load is not connected LED lights. )
Note: This module is more than 3A, 35W in use, to enhance heat dissipation ! ! !
Package Included
1 x  5A DC Buck Converter
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Delivery details
The items will be shipped within 1~2 working days after your payment is received and cleared.(excluding Saturday, Sunday & Holiday)
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The Delivered time to USA buyer is about 7~20 days, other country about
15~35
days delivered.
Notes: pls contact us if you need need trackable or express shipping service.
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