DC-DC 1.4-24V 3A LTC4002 Charging Power Module than MAX1879 QS-12L4.2-2A

Brand: QSKJ

Model: QS-12L4.2-2A

The LTC4002 is DC 4.7-24V to 4.V switching regulator, widte pressure, has undervoltage protection, conversion efficiency up to 90%, it very suitable for Lithium battery.

Parameters:

• Input Voltage :4.7-24V (when the input voltage exceeds 12V, output current 2A, please enhance heat sink)

• Charge voltage: 4.2V

• Charge voltage accuracy: ± 1%

• Suitable for battery: 3.6V 3.7V Lithium Battery 500mAh ~ 15000mAh

• Charging current: 2A

• Charge current accuracy: ± 5%

• Charging indication: when charging, Blue LED bright; when full charge, Blue LED off ( recommend charge one more hour when the Blue LED turn off )

• Battery anti-reflux: NONE ( please Series an Diode (SK34，SK54，SS34 etc.) at the input voltage Postive )

• Conversion efficiency: Max 90% (5V input)

• 12V input efficiency is about 85%

• 24V input efficiency is about 80%

• Switching frequency: 500kHZ

• Input voltage under-voltage protection: 4.2V (TYP)

• Battery intrusion Current: 10uA (without battery polarity protection)

• Operating temperature: Industrial (-40 ° C to +85 ° C)

• Full load temperature rise: 30 ° C

• Reverse battery protection: No

Applications:

• DIY a lithium battery charger. power adapter (DC4.7-24V) to charge lithium battery.

• Fast lithium battery charger, 2A can charge lithium battery faster.

• Some Industrial applications

• Solar panels to charge lithium batteries