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DS2714

Quad, Loose-Cell NiMH Charger

Fast-Charges 1 to 4 Loose NiMH Cells and Performs Tests that Detect and Avoid Charging Defective or Other Inappropriate Cells, such as Alkaline Primary Batteries

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The DS2714 is ideal for standalone charging of 1 to 4 AA or AAA NiMH "loose" cells. NiCd cells can also be charged. Temperature, voltage and charge time are monitored to provide proper fast charging control algorithms for Nickel Metal Hydride (NiMH) batteries. Battery tests are included to detect defective or inappropriate cells such as Alkaline primary batteries. The DS2714 supports a parallel charging topology, with independent monitoring and control of each cell.

Data Sheet

Download	Rev 0	(PDF, 428kB)
E-Mail

An evaluation kit is available: DS2714EVKIT

Key Features

Charges 1 to 4 NiMH Cells
Detects and Avoids Charging Alkaline Cells
Pre-Charges Deeply Depleted Cells
Fast Charges NiMH with -V Termination Sensitivity of 2mV (typ)
Monitors Voltage, Temperature and Time for Safety and Secondary Termination
Works with Regulated Charge Current Source
Drives PNP Type Pass Element
Compatible with Integrated Primary-Side PWM Controllers
20-pin TSSOP Package

Applications/Uses

Desktop/Standalone Chargers (AAA/AA)
Digital Still Cameras
Games
Music Players
Toys

Key Specifications:

Battery Chargers

Part Number

Cell Chemistry

NiMH/ NiCd Cells

Protected V_IN
(V)

Charging V_IN
(V)

Charge Rate Set by

Charge Termination

Charge Regulation

EV Kit

Oper. Temp.
(°C)

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

max

max w/pins

See Notes

DS2714

NiCd

NiMH

5.5

External Source

-ΔV

External

Yes

-20 to +70

TSSOP/20

45.2

$2.12 @1k

See All Battery Chargers (68)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Block Diagram

Application Notes

Application Note 3959		Using an nMOS Transistor with the DS2714
Application Note 4427		Demonstrating Green Technology with Apples, Oranges, Lemons, and Limes

Reliability Reports

Reliability Report:

DS2714.pdf

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2714E+			Active	TSSOP;20 pin;45.2 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0116 (PDF) Use pkgcode/variation: U20+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2714E+T&R			Active	TSSOP;20 pin;45.2 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0116 (PDF) Use pkgcode/variation: U20+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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Evaluation Kits

DS2714EVKIT

Evaluation Kit for the DS2714

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