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LM3622  Product Folder

Lithium-Ion Battery Charger Controller
Generic P/N 3622
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics

Parametric Table Parametric Table
Temperature Min (deg C) -20 
Temperature Max (deg C) 85 
Multiple Output Capability - 
On/Off Pin - 
Error Flag - 
InputMin Voltage (Volt) - 
InputMax Voltage (Volt) - 
Output Current (mA) - 
FullChrg Vmin (Volt) - 
Full Charge Vmax (Volt) - 
Adjustable Output - 
Charge Control Yes 
Voltage Fault Protection - 

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM3622 Lithium-Ion Battery Charger Controller 171 Kbytes 3-Feb-00 View Online Download Receive via Email
LM3622 Lithium-Ion Battery Charger Controller (JAPANESE)
 251 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
LM3622AM-4.1SOIC NARROW8StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.31rail
of
95		NSXYTT
3622A
M-4.1
4-6 weeks5000
LM3622AM-4.2SOIC NARROW8StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.31rail
of
95		NSXYTT
3622A
M-4.2
4-6 weeks10000
LM3622AM-8.2SOIC NARROW8StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.31rail
of
95		NSXYTT
3622A
M-8.2
5-7 weeks5000
LM3622AM-8.4SOIC NARROW8StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.31rail
of
95		NSXYTT
3622A
M-8.4
7-9 weeks1000
LM3622M-4.1SOIC NARROW8StatusFull productionN/AN/A24 Hour Samples
Buy Now		1K+$1.00rail
of
95		NSXYTT
3622
M-4.1
4-6 weeks10000
LM3622M-4.2SOIC NARROW8StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.00rail
of
95		NSXYTT
3622
M-4.2
4-6 weeks20000
LM3622M-8.2SOIC NARROW8StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.00rail
of
95		NSXYTT
3622
M-8.2
5-7 weeks10000
LM3622M-8.4SOIC NARROW8StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.00rail
of
95		NSXYTT
3622
M-8.4
7-9 weeks1000
LM3622AMX-4.1SOIC NARROW8StatusFull productionN/AN/A 1K+$1.31reel
of
2500		NSXYTT
3622A
M-4.1
4-6 weeks10000
LM3622AMX-4.2SOIC NARROW8StatusFull productionN/AN/A 
Buy Now		1K+$1.31reel
of
2500		NSXYTT
3622A
M-4.2
4-6 weeks10000
LM3622AMX-8.2SOIC NARROW8StatusFull productionN/AN/A 1K+$1.31reel
of
2500		NSXYTT
3622A
M-8.2
5-7 weeks5000
LM3622AMX-8.4SOIC NARROW8StatusFull productionN/AN/A 
Buy Now		1K+$1.31reel
of
2500		NSXYTT
3622A
M-8.4
7-9 weeks1000
LM3622MX-4.1SOIC NARROW8StatusFull productionN/AN/A 1K+$1.00reel
of
2500		NSXYTT
3622
M-4.1
4-6 weeks100000
LM3622MX-4.2SOIC NARROW8StatusFull productionN/AN/A 
Buy Now		1K+$1.00reel
of
2500		NSXYTT
3622
M-4.2
4-6 weeks20000
LM3622MX-8.2SOIC NARROW8StatusFull productionN/AN/A 1K+$1.00reel
of
2500		NSXYTT
3622
M-8.2
5-7 weeks20000
LM3622MX-8.4SOIC NARROW8StatusFull productionN/AN/A 1K+$1.00reel
of
2500		NSXYTT
3622
M-8.4
7-9 weeks1000
LM3622-4.1 MDCUnpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LM3622-4.2 MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM3622-8.2 MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM3622-8.4 MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM3622A-4.1 MDCUnpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LM3622A-4.2 MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM3622A-8.4 MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM3622-4.1 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM3622-4.2 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM3622-8.2 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM3622-8.4 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM3622A-4.1 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM3622A-4.2 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0
LM3622A-8.4 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0

General Description

The LM3622 is a charge controller for Lithium-Ion batteries. This monolithic integrated circuit accurately controls an external pass transistor for precision Lithium-Ion battery charging. The LM3622 provides a constant voltage or constant current (CVCC) configuration that changes, as necessary, to optimally charge lithium-ion battery cells. Voltage charging versions (4.1V, 4.2V, 8.2V, and 8.4V) are available for one or two cell battery packs and for coke or graphite anode battery chemistry.

The LM3622 accepts input voltages from 4.5V to 24V. Controller accuracy over temperature is ±30mV/cell for A grade and ±50mV/cell for the standard grade. No precision external resistors are required. Furthermore, the LM3622's proprietary output voltage sensing circuit drains less than 200nA from the battery when the input source is disconnected.

The LM3622 circuitry includes functions for regulating the charge voltage with a temperature compensated bandgap reference and regulating the current with an external sense resistor. The internal bandgap insures excellent controller performance over the operating temperature and input supply range.

The LM3622 can sink 15mA minimum at the EXT pin to drive the base of an external PNP pass transistor. It also has low-voltage battery threshold circuitry that removes this drive when the cell voltage drops below a preset limit. The LVSEL pin programs this threshold voltage to either 2.7V/cell or 2.15V/cell. The low-voltage detection, which is a user enabled feature, provides an output signal that can be used to enable a "wake up charge" source automatically to precondition a deeply discharged pack.

The LM3622 is available in a standard 8-lead SOIC surface mount package.

Features

  • Versions for charging of 1 cell (4.1V or 4.2V) or 2 cells (8.2V or 8.4V)
  • Versions for coke or graphite anode
  • Precision (±30mV/cell) end-of-charge control
  • Wide input range: 4.5V-24V
  • Low battery drain leakage: 200nA
  • 15 mA available to drive low cost PNP

Applications

  • Cellular phone cradle charger
  • PDA/Notebook cradle charger
  • Camcorder cradle charger

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM3622-4.1 MDCLB25009000006000006169643205
LM3622-4.1 MWCLB25009000006000006169643205
LM3622-4.2 MDCLB25009000006000006169643205
LM3622-4.2 MWCLB25009000006000006169643205
LM3622-8.2 MDCLB25009000006000006169643205
LM3622-8.2 MWCLB25009000006000006169643205
LM3622-8.4 MDCLB25009000006000006169643205
LM3622-8.4 MWCLB25009000006000006169643205
LM3622A-4.1 MDCLB25009000006000006169643205
LM3622A-4.1 MWCLB25009000006000006169643205
LM3622A-4.2 MDCLB25009000006000006169643205
LM3622A-4.2 MWCLB25009000006000006169643205
LM3622A-8.4 MDCLB25009000006000006169643205
LM3622A-8.4 MWCLB25009000006000006169643205
LM3622AM-4.1LB25009000006000006169643205
LM3622AM-4.2LB25009000006000006169643205
LM3622AM-8.2LB25009000006000006169643205
LM3622AM-8.4LB25009000006000006169643205
LM3622AMX-4.1LB25009000006000006169643205
LM3622AMX-4.2LB25009000006000006169643205
LM3622AMX-8.2LB25009000006000006169643205
LM3622AMX-8.4LB25009000006000006169643205
LM3622M-4.1LB25009000006000006169643205
LM3622M-4.2LB25009000006000006169643205
LM3622M-8.2LB25009000006000006169643205
LM3622M-8.4LB25009000006000006169643205
LM3622MX-4.1LB25009000006000006169643205
LM3622MX-4.2LB25009000006000006169643205
LM3622MX-8.2LB25009000006000006169643205
LM3622MX-8.4LB25009000006000006169643205

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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