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Battery Charger requires no microcontroller or firmware.

September 30, 2004 - Offering programmable charge current from 0.4–2 A with ±5% accuracy, autonomous Model LTC4060 charges 1–4 cell NiMH and NiCd batteries. Available in 16-lead TSSOP or 5 x 3 mm DFN package with operating voltage from 4.5–10 V, unit uses external PNP transistor to supply current to battery or battery pack. Charger offers 3 options for terminating charge cycle: negative deltaV, max voltage, or max time. Battery drain current is less than 1 µA during sleep mode.

Related categories: Electrical Equipment and Systems | Electronic Components and Devices

Archive Press Release
(Products mentioned in this Archive Press Release may or may not be available from the manufacturer.)

Release date: September 22, 2004

NiMH/NiCd Battery Charger Requires No Microcontroller or Firmware

MILPITAS, CA - September 22, 2004 - Linear Technology Corporation introduces the LTC4060, an autonomous 1- to 4-cell, 0.4A to 2A linear NiMH and NiCd battery charger. The LTC4060 includes all the functions required for a battery charger circuit, operating without the aid of a microcontroller or firmware. The design is simple and needs only three passive components. The LTC4060 also eliminates the need for a sense resistor and blocking diode, which increases efficiency and lowers the solution cost. This IC is targeted at applications including portable medical equipment, automotive diagnostic systems and industrial/telecom test devices.

The LTC4060 is offered in two packages, a 16-lead TSSOP and a 5mm x 3mm DFN. It uses an external PNP transistor to supply current to the battery or battery pack. The operating voltage ranges from 4.5V to 10V. The LTC4060 provides three options for terminating the charge cycle: negative deltaV, maximum voltage or maximum time. Moreover, the IC permits the use of a thermistor for temperature. The charge current is adjustable with a resistor and has ±5% accuracy. The LTC4060 also has automatic battery detection, charge and AC present status output, pre-charge qualification, automatic recharge, reverse current protection and manual shutdown. Battery drain current is less than 1microAmp during sleep mode.

The LTC4060 is rated for operation from -40°C to 85°C. Pricing starts at $3.80 each in 1,000-piece quantities.

Summary of Features: LTC4060

Complete Fast Charger for 1- to 4-cell NiMH & NiCd Batteries

No Firmware or Microcontroller Required

Termination by Negative DeltaV, Maximum Voltage or Maximum Time

Programmable Charge Current from 0.4A to 2A with ±5% Accuracy

Automatic Recharge Keeps Batteries Charged

<1microAmp Battery Drain in Sleep Mode

Company Background

Linear Technology Corporation was founded in 1981 as a manufacturer of high performance linear integrated circuits. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, and many other analog functions. Applications for Linear Technology's high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems.

Contacts:

Marketing:
John Hamburger Director of Marketing Communications
USA
Phone: 408-432-1900 ext 2419

General Information:
Doug Dickinson Media Relations Manager
USA
Phone: 408-432-1900 ext 2233

Company Information:
Name: Linear Technology Corp.
Address: 1630 McCarthy Blvd.
City: Milpitas
State: CA
ZIP: 95035-7417
Country: USA
Phone: 408-432-1900
FAX: 408-434-6441
http://www.linear-tech.com

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