HOME HOME SELECT DESIGN BUY EXPLORE About Us Support My Profile Search

 Products > Analog - Regulators > Lithium-Ion Battery Charge & Protection > LM3420

LM3420  Product Folder

Lithium-Ion Battery Charge Controller
Generic P/N 3420
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing

Parametric Table Parametric Table
Temperature Min (deg C) -40 
Temperature Max (deg C) 125 
Multiple Output Capability No 
On/Off Pin No 
Error Flag No 
InputMin Voltage (Volt) - 
InputMax Voltage (Volt) - 
Output Current (mA) - 
FullChrg Vmin (Volt) 12.60, 16.80, 8.20, 8.40 
Full Charge Vmax (Volt) 12.60, 16.80, 8.20, 8.40 
Adjustable Output No 
Charge Control Yes 
Voltage Fault Protection No 

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM3420-4.2, -8.2, -8.4, -12.6, -16.8 Lithium-Ion Battery Charge Controller 384 Kbytes 28-Jul-00 View Online Download Receive via Email
LM3420-4.2, -8.2, -8.4, -12.6, -16.8 Lithium-Ion Battery Charge Controller (JAPANESE)
 229 Kbytes   View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LM3420AM5-12.6SOT-235StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.10reel
of
1000		D04A
ZXTT
16 weeks20000
LM3420AM5-16.8SOT-235StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.10reel
of
1000		D05A
ZXTT
16 weeks10000
LM3420AM5-4.2SOT-235StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.10reel
of
1000		D02A
ZXTT
16 weeks25000
LM3420AM5-8.2SOT-235StatusFull productionN/AN/A24 Hour Samples
Buy Now		1K+$1.10reel
of
1000		D07A
ZXTT
16 weeks20000
LM3420AM5-8.4SOT-235StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.10reel
of
1000		D03A
ZXTT
16 weeks10000
LM3420M5-12.6SOT-235StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.95reel
of
1000		D04B
ZXTT
16 weeks20000
LM3420M5-16.8SOT-235StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.95reel
of
1000		D05B
ZXTT
16 weeks10000
LM3420M5-4.2SOT-235StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.95reel
of
1000		D02B
ZXTT
16 weeks20000
LM3420M5-8.2SOT-235StatusFull productionN/AN/A24 Hour Samples
Buy Now		1K+$0.95reel
of
1000		D07B
ZXTT
16 weeks25000
LM3420M5-8.4SOT-235StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.95reel
of
1000		D03B
ZXTT
16 weeks10000
LM3420AM5X-12.6SOT-235StatusFull productionN/AN/A 1K+$1.10reel
of
3000		D04A
ZXTT
16 weeks20000
LM3420AM5X-16.8SOT-235StatusFull productionN/AN/A 
Buy Now		1K+$1.10reel
of
3000		D05A
ZXTT
16 weeks20000
LM3420AM5X-4.2SOT-235StatusFull productionN/AN/A 
Buy Now		1K+$1.10reel
of
3000		D02A
ZXTT
16 weeks20000
LM3420AM5X-8.2SOT-235StatusFull productionN/AN/A 
Buy Now		1K+$1.10reel
of
3000		D07A
ZXTT
16 weeks10000
LM3420AM5X-8.4SOT-235StatusFull productionN/AN/A 
Buy Now		1K+$1.10reel
of
3000		D03A
ZXTT
16 weeks10000
LM3420M5X-12.6SOT-235StatusFull productionN/AN/A 1K+$0.95reel
of
3000		D04B
ZXTT
16 weeks20000
LM3420M5X-16.8SOT-235StatusFull productionN/AN/A 1K+$0.95reel
of
3000		D05B
ZXTT
16 weeks20000
LM3420M5X-4.2SOT-235StatusFull productionN/AN/A 
Buy Now		1K+$0.95reel
of
3000		D02B
ZXTT
16 weeks100000
LM3420M5X-8.2SOT-235StatusFull productionN/AN/A 1K+$0.95reel
of
3000		D07B
ZXTT
16 weeks20000
LM3420M5X-8.4SOT-235StatusFull productionN/AN/A 1K+$0.95reel
of
3000		D03B
ZXTT
16 weeks50000
LM3420A-4.2 MDAUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM3420A-8.2 MDAUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM3420A-8.4 MDAUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM3420A12.6 MDAUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM3420A16.8 MDAUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM3420A-4.2 MWAWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM3420A-8.2 MWAWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM3420A-8.4 MWAWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM3420A12.6 MWAWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM3420A16.8 MWAWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0

General Description

The LM3420 series of controllers are monolithic integrated circuits designed for charging and end-of-charge control for Lithium-Ion rechargeable batteries. The LM3420 is available in five fixed voltage versions for one through four cell charger applications (4.2V, 8.2V/8.4V, 12.6V and 16.8V respectively).

Included in a very small package is an (internally compensated) op amp, a bandgap reference, an NPN output transistor, and voltage setting resistors. The amplifier's inverting input is externally accessible for loop frequency compensation. The output is an open-emitter NPN transistor capable of driving up to 15 mA of output current into external circuitry.

A trimmed precision bandgap reference utilizes temperature drift curvature correction for excellent voltage stability over the operating temperature range. Available with an initial tolerance of 0.5% for the A grade version, and 1% for the standard version, the LM3420 allows for precision end-of-charge control for Lithium-Ion rechargeable batteries.

The LM3420 is available in a sub-miniature 5-lead SOT23-5 surface mount package thus allowing very compact designs.

Features

  • Voltage options for charging 1, 2, 3 or 4 cells
  • Tiny SOT23-5 package
  • Precision (0.5%) end-of-charge control
  • Drive capability for external power stage
  • Low quiescent current, 85 µA (typ.)

Applications

  • Lithium-Ion battery charging
  • Suitable for linear and switching regulator charger designs
[Information as of 15-Jan-2004]

Website Guide • About "Cookies" • National is QS 9000 Certified • Privacy/Security Statement • Contact Us/Feedback
Site Terms & Conditions of Use • Copyright 2003© National Semiconductor Corporation