LM3658SDX/NOPB National Semiconductor, LM3658SDX/NOPB Datasheet



Manufacturer Part Number
National Semiconductor
Battery Chargerr

Specifications of LM3658SDX/NOPB

Charge Management
Battery Type
Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
Voltage - Supply
4.35 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-WFDFN Exposed Pad
Output Current
Output Voltage
Operating Supply Voltage (min)
Operating Supply Voltage (max)
Operating Temp Range
-40C to 85C
Package Type
Surface Mount
Pin Count
Operating Temperature Classification
For Use With
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
© 2007 National Semiconductor Corporation
Dual Source USB/AC Li Chemistry Charger IC for Portable
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 inte-
grates internal power FETs, reverse current protection and
current sensing. The internal power FETs are thermally reg-
ulated 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 man-
agement is obtained through thermal regulation, battery tem-
perature measurement and multiple safety timers. The
LM3658 provides two open-drain outputs for LED status in-
dication or connection to GPIOs.
Typical Application
Integrated power FETs with thermal regulation
Charges from either an AC wall adapter or USB power
source with automatic source selection
50 mA to 1000 mA charge currents using AC wall adapter
Pin-selectable USB charge currents of 100 mA or
500 mA
LDO mode with 1A of source current is automatically
invoked when the battery is absent and the AC wall
adapter is connected
Continuous battery temperature monitoring
Built-in multiple safety timers
Charge status indication
Continuous over-current and temperature protection
Near-depleted battery pre-conditioning
Sleep mode with ultra low quiescent current
On-board Kelvin-sensing achieves ±0.35% termination
Maintenance mode with automatic recharge
Thermally enhanced 3 mm x 3 mm LLP package
Digital still cameras
Hard Drive and flash-based MP3 players
USB-powered devices
November 2006

Related parts for LM3658SDX/NOPB

LM3658SDX/NOPB Summary of contents

Page 1

... The LM3658 provides two open-drain outputs for LED status in- dication or connection to GPIOs. Typical Application © 2007 National Semiconductor Corporation Features ■ Integrated power FETs with thermal regulation ■ ...

Page 2

Connection Diagram and Package Mark Information Note: The actual physical placement of the package marking will vary from part to part. The package marking “X” is the manufacturing plant code. “YY” digit date code, and "ZZ" for ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. CHG_IN, USBpwr ( All other pins except GND Power Dissipation (Note 3) Junction Temperature (T J-MAX) Electrical Characteristics µ µF, C CHG_IN USBpwr BATT appearing in boldface type apply over T ...

Page 4

Symbol Parameter I CHG_IN Full Rate CHG Charge Current K Charge Current Set ISET Coefficient (see CHG ISET ISET full-rate charge mode description) V Charge Current Set ISET Voltage I USB Full-Rate Charge USB_L Low Current ...

Page 5

Symbol Parameter DETECTION AND TIMING T Power OK Deglitch V POK Time T Pre-Qualification Timer PREQUAL T Deglitch Time for Pre- PQ_FULL Qualification to Full- Rate Charge Transition T Deglitch Time for Full- FULL_PQ Rate to Pre- Qualification Transition T ...

Page 6

Block Diagram www.national.com 6 20128203 ...

Page 7

Li-Ion Charging Profile 7 20128204 www.national.com ...

Page 8

LM3658 Operation Description POWER-DOWN MODE The LM3658 will power down automatically when the voltage on the USBpwr or CHG_IN pin drops below the battery volt- age with an amount that is equal Power-Down mode shuts off ...

Page 9

TABLE 1. Status Pins Summary STAT1 STAT2 Condition OFF OFF Power-Down, charging is suspended or interrupted ON OFF Pre-qualification mode, CC and CV charging, Top-off mode OFF ON Charge is completed ON ON Bad battery (Safety timer expired), or LDO ...

Page 10

LDO MODE (AVAILABLE ONLY IN LM3658SD-B VERSION) The LM3658SD-B version enters LDO mode when the T is floating and AC wall adapter is still connected to CHG_IN pin. In LDO mode, STAT1 and STAT2 are both on. The LM3658SD-B becomes ...

Page 11

LM3658 FLOWCHARTS LM3658 Flowchart 11 20128207 www.national.com ...

Page 12

LM3658 USBpwr Mode Flowchart LM3658 CHG_IN Mode Flowchart 12 20128206 20128208 ...

Page 13

Physical Dimensions inches (millimeters) unless otherwise noted LLP10 Package Drawing NS Package Number SDA10A 13 www.national.com ...

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... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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