Description

1.Description:

It is a 5V/3.3V dual output USP module.The external power supply charges the battery,and then the battery is boosted to supply power to the load.The second 3.3V output is stepped down from the 5V output,and its power is affected by the 5V load.

2.Feature:

1).It is small in size,dual output,and cost-effective.

2).This module adopts an online design,there is no switching time,and the load will not restart.

3).It has a battery indicator that flashes when charging and stays on when fully charged.

4).The module has its own battery over-discharge protection.When the battery voltage is lower than 2.5V-2.6V,it will be turned off and discharged,and charging will resume.

5).It supports input surge protection,discharge short circuit protection,and chip overheat protection.

3.Parameter:

1).Product Name:5V/3.3V Dual Output USP Module

2).Input Voltage:DC 4.5V-5.5V

3).Input Current:1.5A-2A (Max)

4).Battery Capacity Range:1500mAh-8000mAh (the heavier the load,the smaller the supported battery capacity)

5).Support Battery:3.7V-4.2V

6).Battery Charging Voltage:DC 4.15V-4.2V

7).Output Voltage:DC 3.3V/5V

8).Output Current:0.3A-1A(5V),0.4A-1A(3.3V)

9).System Structure:online UPS

10).Work Temperature:-25℃~85℃

11).Work Humidity:5%~95%RH

12).Size:34*16*4.2mm

Package: 3pcs 5V/3.3V Dual Output USP Module

4.Note:

1).If the power failure is not frequent and the load power is very low,the battery can also be equipped with more than 10,000 mA.However,if the load is heavy or exceeds 30% of the input power,the battery capacity will be severely limited.At this time,the charging power is less than 50%,and the battery capacity should be less than 6000mAh,otherwise it may not be fully charged or the charging system may be abnormal.

5.About the battery protection board:

1).The battery can not be connected to the protection board.If you want to connect the protection board,the protection voltage requirement is 2.8-3.0V,and the recovery voltage is 2.9-3.1V.

6.About the load power when designing automatic charging and discharging products:

1).Since the boost will produce losses,the output power must be multiplied by the battery discharge end voltage multiplied by the input current to be the load capacity.

2).For example,the input current is 1A,the battery discharge end voltage is 2.5V,and the efficiency is 85%-90%.Calculated according to the lowest efficiency,1*2.5*0.85=2.125W ÷ 5V=0.42A,if only 5V output is used ,When the load is less than 0.4A,it can realize the automatic charging and discharging function,the battery will automatically turn off when it is empty,and it will automatically charge the battery and drive the load after the power is turned on.

3).If the load is greater than 5V 0.4A,the battery will not be able to be charged,the load will restart repeatedly,the battery will fall into an infinite short cycle,charge for a few seconds and discharge for a few seconds,the battery life will drop sharply,so do not overload,unless the load There is a switch to turn it off.

7.About the output power in power mode and battery mode:

1).Power mode:output 5V,the upper limit is 0.5A,it is recommended to be less than 0.4A when using,and half of the power should be reserved for charging.

2).Power mode:output 3.3V,the current is about 0.4-0.5A,it should be less than 0.4A when used.

3).Battery mode:output 5V,current 0.8-1.2A,about 1A on average.

4).Battery mode:output 3.3V,current 0.6-0.8A,upper limit 1A.

5).Due to its own heat dissipation problem,the load should not exceed 0.6A,otherwise the chip will overheat and affect its life.

6).Two sets of outputs can be used at the same time,or only one set of voltages can be used.If they are used at the same time,the total input power can be divided into 5V load within 30%,3.3V load within 20%,and charging load within 50%,namely:The 5V load is within 0.3A,the 3.3V load is within 0.2A,and the charging current is within 0.1A.The total current consumption is about 0.9-1A,and the power consumption is about 2.5W.The input 5V 1A current is just distributed.

8.About the battery indicator:

1).Flashing when charging,always on when fully charged,flashing when discharging,and the flashing frequency will decrease when the battery is low.

2).For example:3 flashes means the battery power is about 75%,and 1 flash is about 25%.When the battery power is exhausted,the LED will turn off,and then wait for charging,and the LED will turn off when there is no load.

9.Application:

1).Communication equipment

2).Network equipment

3).MCU CNC