Description

1.Description:

 It is a DC-DC step-down module.It supports input DC 7V-21V and output DC 5V.

2.Feature:

 1).It has low standby current and low power consumption.

 2).It supports built-in over-temperature protection,over-current protection,and short-circuit protection.

 3).It has a built-in soft start.

 4).It has an EN enable terminal.After the R2 resistor on the module is removed,EN is the enable pin,and the logic is high and effective.

 5).It supports high current operation.

 6).Its conversion efficiency is high,up to 98%

 7).It has a small size and low ripple.

 8).It uses high-power alloy inductors.

3.Parameter:

 1).Product Name:DC-DC Step-Down Module

 2).Input Voltage:DC 7V-21V

 3).Output Voltage:5V

 4).Maximum Output Current:5A(5A can work for a long time,measured at a room temperature of 25 degrees;if the ambient temperature is too high,heat dissipation needs to be strengthened)

 5).Operating Frequency:500KHz

 6).High Efficiency:98%(Max)

 7).Work Temperature:-25℃~85℃

 8).Work Humidity:5%~95%RH

 9).Size:39*18*7mm

5.Instructions:

 1).First connect the connection line between the module and the power supply,and then power on.If the input terminal is connected with electricity,it is prone to sparking,which will burn out the IC.

 2).After selecting a suitable power supply,use a multimeter or voltmeter to measure whether the output voltage of the module is consistent with the voltage required by the device.

 3).The electrical equipment or load is connected to the output terminal of the module.

 4).The thickened and widened power pins of the USB female socket of this module can work with excessive current for a long time,but the USB cable also needs to support high current,otherwise the output current loss will be large and the standard parameters will not be met.

 5).5A means the maximum current that the module can work for a long time.The real working current is determined by the load.If it is less than 5A,it will work better,with less heat and longer life.

6.Package:

 1).1pc DC-DC Step-Down Module