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MAXREFDES1219: 1-Cell Battery USB Charger and Fuel Gauge

MAXREFDES1219

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Reference Guide

Description

The MAXREFDES1219 is an integrated smart solution for the 1-cell Li+ battery pack that provides a linear charger, Universal Serial Bus (USB) charger detect, and battery cell monitor including (State of Charge) SoC, (Open Circuit Voltage) OCV, temperature, current, etc.

This reference design is compliant with the USB BC Rev1.2*, which detects multiple USB battery-charging methods including Standard Downstream Port (SDP), Charging Downstream Port (CDP), and Dedicated Charging Port (DCP). The devices also detect common proprietary charge adapters, including those from Apple.

Maxim Integrated’s single-chip solution, the MAX14746, is the optimal solution for both USB linear charger and charger detection.

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.

Features

  • Proven PCB Layout Fully Assembled and Tested
  • Monitors from 1S Battery Cell
  • Windows 10 Compatible Software
  • I2C Serial Interface

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Designed, Built, Tested

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

 

Schematic

PCB Layout

Test Results

Parametrics

Input Type Vin(Min) Vin(Max) Iout(Max) Single/Multiple Output Vout(V) Pout(W) Isolated/Non-Isolated Topology
DC - 28 3 Single 4.6 15 Non-isolated Linear

Parametrics

Input Type DC
Vin(Min) -
Vin(Max) 28
Iout(Max) 3
Single/Multiple Output Single
Vout(V) 4.6
Pout(W) 15
Isolated/Non-Isolated Non-isolated
Topology Linear

Maxim Devices (2)

Part Number Name Product Family Order Design kits and evaluation modules
MAX14746 USB Detection with Smart Power Selector Li+ Chargers Battery Management Buy Now
MAX17260 5.1µA 1-Cell Fuel Gauge with ModelGauge m5 EZ and Optional High-Side Current Sensing Battery Management Buy Now

Maxim Devices (2)

Part Number Product Family
Battery Management
USB Detection with Smart Power Selector Li+ Chargers
Battery Management
5.1µA 1-Cell Fuel Gauge with ModelGauge m5 EZ and Optional High-Side Current Sensing

Design Files (4)

Title Type Size Date
MAXREFDES1219 Test Results PDF 688KB 2021-11-21
MAXREFDES1219 BOM CSV 4KB 2021-11-21
MAXREFDES1219 PCB PDF 1MB 2021-11-21
MAXREFDES1219 Schematic PDF 24KB 2021-11-21
Date Type
2021-11-21

MAXREFDES1219 Test Results

(PDF, 688KB)

2021-11-21

MAXREFDES1219 BOM

(CSV, 4KB)

2021-11-21

MAXREFDES1219 PCB

(PDF, 1MB)

2021-11-21

MAXREFDES1219 Schematic

(PDF, 24KB)

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