KIT34674EPEVBE: Evaluation Kit - 34674, Single-Cell Li-Ion/Li-Poly Charger

Overview

The Evaluation Kit features the MC34674, which is a fully integrated single-cell Li-Ion and Li-Polymer battery charger optimized for travel charger applications. The few external components required include a dual-color LED for charge-status indication, a negative-temperature-coefficient (NTC) thermistor circuit for setting the charge temperature window, and two decoupling capacitors.

The MC34674 tolerates an input voltage up to 28 V, which allows low-cost ac/dc converters to be used for further system-cost reduction. A charge cycle of the MC34674 includes trickle, constant-current (CC) and constant-voltage (CV) charge modes. The CC-mode current is selectable from 50 mA to 1.05 A, with 10% accuracy and the constant-output voltage in the CV-mode is fixed at 4.2 V.

The MC34674 has many features such as trickle charging for a deeply-discharged battery, an internal timer for termination to prevent charging a failed battery, charger current thermal foldback for thermal protection, and smart battery-connection verification to prevent charging in case there is no battery connected. It has a 2.6 V falling power-on-reset (POR) threshold, making it great to work with current-limited power supplies. When the charger is disabled, the BAT pin leaks less than 1 µA current from the battery.

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Specifications

Supported Devices

Power Management

MC34674 : Single-Cell Li-Ion/Li-Polymer Battery Travel Charger

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Technical and Functional Specifications

Power Management	28 V maximum input voltage rating with 11 V over-voltage-protection threshold ± 0.4% voltage accuracy over -20 to 70 °C Factory programmable charge current Trickle charge for fully discharged batteries
User Components	Driving a dual-color LED and smart battery-connection verification optimized for travel charger applications
General Specifications	No external MOSFET, reverse-blocking diode, or current-sense resistor is required Interface to NTC thermistor

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KIT34674EPEVBE ^Active
Evaluation Kit - MC34674, High-Input-Voltage Travel Charger for 1-Cell Li-Ion/Li-Polymer Batteries
- KIT34674EPEVBE Hardware
- Quick Reference Guide

KIT34674EPEVBE
1 @ US
$70.00

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Design Resources

Get Started

Get Started with the KIT34674EPEVBE Evaluation kit

User Guide

“Everything you need to get started with the KIT34674EPEVBE Evaluation Kit”.

KIT34674EPEVBE, Using the High-Input-Voltage Travel Charger for Single Cell Li-Ion Batteries - User Guide^{(REV
1.0
)}
- 267.3 kB
- KT34674UG
- [ English ]

Design Resources ( 1 )

Design Tools & Files ( 1 )
- Printed Circuit Boards and Schematics ( 1 )

Documents

Data Sheet ( 1 )

MC34674, High Input Voltage Travel Charger for Single-cell Li-Ion Batteries^{(REV
2.0
)}

The MC34674 is a fully-integrated single-cell Li-Ion battery charger optimized for travel charger applications.
- PDF
- 597.2 kB
- 20 Nov 2008
- MC34674
- [ English ]

Users Guide ( 1 )

KIT34674EPEVBE, Using the High-Input-Voltage Travel Charger for Single Cell Li-Ion Batteries - User Guide^{(REV
1.0
)}

This User Guide helps the Li-Ion battery travel charger designer to understand the MC34674 and its evaluation board. It illustrates the design procedure when using MC34674 to design a Li-Ion battery charger and the way to get the best performance of the MC34674.
- PDF
- 267.3 kB
- 18 Jun 2009
- KT34674UG
- [ English ]

Design Resources

Design Tools & Files ( 1 )

Printed Circuit Boards and Schematics ( 1 )

KIT34674EPGRBR: Gerber files for the KIT34674EPEVBE Evaluation board^{(REV
A
)}

Downloadable Gerber files used to build the EVB PCB
- ZIP
- 268.3 kB
- 2007-09-04 00:00:00
- KIT34674EPGRBR
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KIT34674EPEVBE: Evaluation Kit - 34674, Single-Cell Li-Ion/Li-Poly Charger

Overview

Specifications

Supported Devices

Power Management

Technical and Functional Specifications

Buy

KIT34674EPEVBE Active

Design Resources

Get Started

User Guide

Documents ( 2 )

Design Resources ( 1 )

Documents

Data Sheet ( 1 )

MC34674, High Input Voltage Travel Charger for Single-cell Li-Ion Batteries (REV 2.0 )

Users Guide ( 1 )

KIT34674EPEVBE, Using the High-Input-Voltage Travel Charger for Single Cell Li-Ion Batteries - User Guide (REV 1.0 )

Design Resources

Design Tools & Files ( 1 )

Printed Circuit Boards and Schematics ( 1 )

KIT34674EPGRBR: Gerber files for the KIT34674EPEVBE Evaluation board (REV A )

KIT34674EPEVBE ^Active

MC34674, High Input Voltage Travel Charger for Single-cell Li-Ion Batteries^{(REV
2.0
)}

KIT34674EPEVBE, Using the High-Input-Voltage Travel Charger for Single Cell Li-Ion Batteries - User Guide^{(REV
1.0
)}

KIT34674EPGRBR: Gerber files for the KIT34674EPEVBE Evaluation board^{(REV
A
)}