MAXREFDES1260: Li Battery Charger and Monitor System with 3A USB-C Input


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The requirements for higher quality and performance in digital SLR cameras, DSC, and other 2S Li+ battery electronic equipment is increasing. The most important among these is battery life. The USB Type-C meets the USB 3.0 high-speed data transmission requirements. It also supports up to 20V/5A charging power. It is the best way to solve the problem of fast charging multiple batteries. Maxim Integrated’s highly integrated charger, MAX14748, is the optimal solution for both the high voltage and USB-C detector challenges. The estimation of battery power is also most relevant to the user experience. Maxim Integrated has specialized fuel gauge chips based on the ModelGauge m5 algorithm, with the lowest power consumption and estimation accuracy in the industry.


  • Proven PCB Layout
  • Full Assembled and Tested
  • Monitors from 2S Cell Packs
  • Windows 10 Compatible Software
  • I2C serial interface Applications
  • Tablets, Two-in-One Laptops
  • Digital Imaging (DSC, DVC)
  • USB Type-C Two-Cell Pack Equipment


Designed, Built, Tested

Board pictured here has been fully assembled and tested. Not available for sale.



PCB Layout

Test Results


Input Type Vin(Min) Vin(Max) Iout(Max) Single/Multiple Output Vout(V) Pout(W) Isolated/Non-Isolated Topology
DC - 28 3 Single 8.6 15 Non-isolated Boost


Input Type DC
Vin(Min) -
Vin(Max) 28
Iout(Max) 3
Single/Multiple Output Single
Vout(V) 8.6
Pout(W) 15
Isolated/Non-Isolated Non-isolated
Topology Boost

Maxim Devices (3)

Part Number Name Product Family Order Design kits and evaluation modules
MAX14748 USB Type-C Charger Battery Management Buy Now
MAX17261 5.1µA Multi-Cell Fuel Gauge with ModelGauge m5 EZ Battery Management Buy Now
MAX20323 USB Type-C CC-Pin Overvoltage Protector Complete System Power Protection IC Buy Now

Maxim Devices (3)

Part Number Product Family
Battery Management
USB Type-C Charger
Battery Management
5.1µA Multi-Cell Fuel Gauge with ModelGauge m5 EZ
Complete System Power Protection IC
USB Type-C CC-Pin Overvoltage Protector

Design Files (4)

Title Type Size Date
MAXREFDES1260 BOM CSV 6KB 2021-03-08
MAXREFDES1260 PCB Layout PDF 923KB 2021-11-21
MAXREFDES1260 Schematic PDF 28KB 2021-11-21
MAXREFDES1260 Test Results PDF 600KB 2021-11-21
Date Type


(CSV, 6KB)



(PDF, 923KB)


MAXREFDES1260 Schematic

(PDF, 28KB)


MAXREFDES1260 Test Results

(PDF, 600KB)

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