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LM3658 -
Dual Source USB/AC Li Chemistry Charger IC for Portable Applications
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Features
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Integrated power FETs with thermal regulation
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Charges from either an AC wall adapter or USB power source with automatic source selection
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50 mA to 1000 mA charge currents using AC wall adapter
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Pin-selectable USB charge currents of 100 mA or
500 mA
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LDO mode with 1A of source current is automatically invoked when the battery is absent and the AC wall adapter is connected
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Continuous battery temperature monitoring
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Built-in multiple safety timers
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Charge status indication
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Continuous over-current and temperature protection
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Near-depleted battery pre-conditioning
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Sleep mode with ultra low quiescent current
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On-board Kelvin-sensing achieves ±0.35% termination accuracy
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Maintenance mode with automatic recharge
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Thermally enhanced 3 mm x 3 mm LLP package
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General Description
The LM3658 is a single chip charger IC designed for handheld applications. More...
Applications
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Smartphones
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Digital still cameras
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PDAs
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Hard Drive and flash-based MP3 players
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USB-powered devices
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Typical Application
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Parametric Table
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Parametric Table
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Block Diagram
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Datasheet
Package Availability, Models, Samples & Pricing
| Part Number | Package | Factory Lead Time | Models | Samples &
Electronic
Orders | Budgetary Pricing | Std
Pack
Size | Package
Marking
Format |
| Type | Pins | Spec. | MSL
Rating | Peak
Reflow | RoHS
Report | CAD
Symbols | Weeks | Qty | Qty | $US each |
| LM3658SD-AEV | Dual Source USB/AC Li Chemistry Charger IC for Portable Applications | Full production | N/A
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| 1+ | $101.00 | 1 | - |
| 6 weeks | N/A |
| LM3658SDEV | Dual Source USB/AC Li Chemistry Charger IC for Portable Applications | Full production | N/A
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| 1+ | $101.00 | 1 | - |
| 6 weeks | N/A |
| LM3658SD | LLP | 10 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
| 
| 1K+ | $0.65 | reel
of
1000 | ZXYTT
L111B |
| 6 weeks | 20000 |
| LM3658SD-A | LLP | 10 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
|
| 1K+ | $0.65 | reel
of
1000 | ZXYTT
L155B |
| 6 weeks | 7500 |
| LM3658SD-B | LLP | 10 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
|
| 1K+ | $0.65 | reel
of
1000 | ZXYTT
L156B |
| 6 weeks | 500 |
| LM3658SDX | LLP | 10 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
|
| 1K+ | $0.65 | reel
of
4500 | ZXYTT
L111B |
| 6 weeks | 5000 |
| LM3658SDX-A | LLP | 10 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
|
| 1K+ | $0.65 | reel
of
4500 | ZXYTT
L155B |
| 6 weeks | N/A |
| LM3658SDX-B | LLP | 10 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
|
| 1K+ | $0.65 | reel
of
4500 | ZXYTT
L156B |
| 6 weeks | 5000 |
General Description
The LM3658 is a single chip charger IC designed for handheld applications. It can safely charge and maintain a single cell
Li-Ion/Polymer battery operating from an AC wall adapter or USB power source. Input power source selection of USB/AC is automatic.
With both power sources present, the AC power source has priority. Charge current is programmed through an external resistor
when operating from an AC wall adapter allowing charge currents from 50 mA to 1000 mA. When the battery is charged using USB
power, charge currents of 100 mA or 500 mA are pin-selectable. The termination voltage is controlled to within ±0.35% of 4.2V.
The LM3658 requires few external components and integrates internal power FETs, reverse current protection and current sensing.
The internal power FETs are thermally regulated to obtain the most efficient charging rate for a given ambient temperature.
The LM3658 operates in five modes: pre-qualification mode, constant-current mode, constant-voltage mode, top-off mode and
maintenance mode. Additionally, the charger IC operates as a linear regulator in “LDO mode”, when the AC wall adapter is connected
and no battery is present. Optimal battery management is obtained through thermal regulation, battery temperature measurement
and multiple safety timers. The LM3658 provides two open-drain outputs for LED status indication or connection to GPIOs.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
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LM3658SD | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104
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LM3658SD-A | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104
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LM3658SD-B | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104
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LM3658SDX | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104
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LM3658SDX-A | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104
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LM3658SDX-B | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104
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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.
Reference Designs
Application Notes
| Title | Size in Kbytes |
Date |
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| AN-1517: Application Note 1517 LM3658 Evaluation Kit |
439 Kbytes |
24-Oct-06 |
Download |
AN-1517 (Chinese): Application Note 1517 LM3658 Evaluation Kit
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235 Kbytes |
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[Information as of 5-Jul-2009]
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RoHS Compliance Information