Datasheet
RoHS Compliance Information
| Size in Kbytes | Date |
 |
| LM3621 Single Cell Lithium-Ion Battery Charger Controller |
377 Kbytes |
4-Oct-04 |
Download |
LM3621 Single Cell Lithium-Ion Battery Charger Controller (Japanese)
 |
200 Kbytes |
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| Obsolete Part | Alternate Part or
Supplier | Source | Last Time Buy Date |
LM3621M
| LP3941LQ-A
| NATIONAL SEMICONDUCTOR
| 15 Dec 2008
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LM3621MX
| NONE
| NATIONAL SEMICONDUCTOR
| 16 Nov 2008
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General Description
The LM3621 is a full function constant voltage, constant current (CVCC) lithium-ion (Li+) battery charger controller. It provides 1% regulation accuracy over the specified temperature range without requiring the use of external precision resistors. The IC controls five charge modes: conditioning, fast, top-off, monitor and maintenance. In addition, the LM3621 detects and flags defective batteries as well as over current and over voltage fault events. The architecture of the IC is based on high gain constant voltage and constant current control loops.
The LM3621 is designed to control a switching charger, a linear charger or an off-line ac adapter charger.
The LM3621 consists of a logic controller, precision bandgap reference, wide bandwidth transconductance error amplifiers, comparators, and an output buffer. The LM3621 is available in a 16-pin SOIC package and is specified over the range of 0°C to 70°C.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LM3621M | CS100 | 1 | 14211 | 71 | 0 | 898000 | 4 | 254809951
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Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR.
The Long Term Failure Rates were calculated
at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress
temperature of 150°C to an application temperature of 55°C.
For more information on Reliability Metrics, please click here.
[Information as of 8-Nov-2009]
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