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LM3658

Stat2

Stat1

Iset

BATT

1 PF

Battery

Pack

GND

USB_sel

EN_b

1 PF

CHG_IN

4.5V to 6V

USBpwr

4.5V to 6V

LM3658

www.ti.com

SNVS328E –MAY 2005–REVISED MARCH 2007

LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications

Check for Samples: LM3658

FEATURES

DESCRIPTION

The LM3658 is a single chip charger IC designed for

• Integrated Power FETs with Thermal

handheld applications. It can safely charge and

Regulation

maintain a single cell Li-Ion/Polymer battery operating

• Charges from Either an AC Wall Adapter or

from an AC wall adapter or USB power source. Input

USB Power Source with Automatic Source

power source selection of USB/AC is automatic. With

Selection

both power sources present, the AC power source

has priority. Charge current is programmed through

• 50 mA to 1000 mA Charge Currents Using AC

an external resistor when operating from an AC wall

Wall Adapter

adapter allowing charge currents from 50 mA to 1000

• Pin-Selectable USB Charge Currents of 100

mA. When the battery is charged using USB power,

mA or 500 mA

charge currents of 100 mA or 500 mA are pin-

• LDO Mode with 1A of Source Current is

selectable. The termination voltage is controlled to

within ±0.35% of 4.2V.

Automatically Invoked When the Battery is

Absent and the AC Wall Adapter is Connected

The LM3658 requires few external components and

• Continuous Battery Temperature Monitoring

integrates internal power FETs, reverse current

protection and current sensing. The internal power

• Built-in Multiple Safety Timers

FETs are thermally regulated to obtain the most

• Charge Status Indication

efficient charging rate for a given ambient

• Continuous Over-current and Temperature

temperature.

Protection

The LM3658 operates in five modes: pre-qualification

• Near-depleted Battery Pre-conditioning

mode, constant-current mode, constant-voltage

• Sleep Mode with Ultra Low Quiescent Current

mode, top-off mode and maintenance mode.

Additionally, the charger IC operates as a linear

• On-board Kelvin-sensing Achieves ±0.35%

regulator in “LDO mode”, when the AC wall adapter is

Termination Accuracy

connected and no battery is present. Optimal battery

• Maintenance Mode with Automatic Recharge

management is obtained through thermal regulation,

• Thermally Enhanced 3 mm x 3 mm WSON battery temperature measurement and multiple safety

timers. The LM3658 provides two open-drain outputs

Package

for LED status indication or connection to GPIOs.

APPLICATIONS

Typical Application

• Smartphones

• Digital Still Cameras

• PDAs

• Hard Drive and Flash-based MP3 Players

• USB-powered Devices

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (20 pages)

PAGE 1
LM3658 www.ti.com SNVS328E – MAY 2005 – REVISED MARCH 2007 LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications Check for Samples: LM3658 FEATURES 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.
PAGE 2
LM3658 SNVS328E – MAY 2005 – REVISED MARCH 2007 www.ti.com Connection Diagram and Package Mark Information 1 2 3 4 Die-Attach Pad (DAP) GND 5 10 10 9 9 1 2 8 8 Die-Attach Pad (DAP) 7 7 GND 6 6 Top View 3 4 5 Bottom View Figure 1. WSON10 Package Drawing Pin Descriptions Pin # Name Description 1 CHG_IN AC wall adapter input pin. 2 USBpwr USB power input pin. 3 GND Power and signal ground pin. 4 USB_sel Pulling this pin low limits the USB charge current to 100 mA.
PAGE 3
LM3658 www.ti.com SNVS328E – MAY 2005 – REVISED MARCH 2007 OPERATING RATINGS (1) (2) Input Voltage Range for CHG_IN 4.5V to 6.0V Input Voltage Range for USB_pwr 4.35V to 6.0V Recommended Load Current 0 to 1000 mA Power Dissipation (3) Internally Limited Junction Temperature (TJ) Range −40°C to +125°C Ambient Temperature (TA) Range −40°C to +85°C (1) (2) (3) Absolute Maximum Ratings indicate limits beyond which damage to the component may occur.
PAGE 4
LM3658 SNVS328E – MAY 2005 – REVISED MARCH 2007 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Unless otherwise noted, VCC (VCHG_IN and/or VUSBpwr) = 5V, VBATT = 3.5V. CCHG_IN = 1 µF, CUSBpwr = 1 µF, CBATT = 1 µF. Typical values and limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply over TJ = 0°C to +85°C.
PAGE 5
LM3658 www.ti.com SNVS328E – MAY 2005 – REVISED MARCH 2007 ELECTRICAL CHARACTERISTICS (continued) Unless otherwise noted, VCC (VCHG_IN and/or VUSBpwr) = 5V, VBATT = 3.5V. CCHG_IN = 1 µF, CUSBpwr = 1 µF, CBATT = 1 µF. Typical values and limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply over TJ = 0°C to +85°C.
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LM3658 SNVS328E – MAY 2005 – REVISED MARCH 2007 www.ti.
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LM3658 www.ti.com SNVS328E – MAY 2005 – REVISED MARCH 2007 Li-Ion Charging Profile 1C 1C Battery Voltage/Battery Current Battery Voltage 4.2V 4.0V Battery Current 3.0V 0.1C 50 mA 0.
PAGE 8
LM3658 SNVS328E – MAY 2005 – REVISED MARCH 2007 www.ti.com 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 voltage with an amount that is equal to VOK_CHG (VBATT > VCC - VOK_CHG). Power-Down mode shuts off the internal power FETs as well as the open-drain pull-down transistors on the status pins STAT1 and STAT2.
PAGE 9
LM3658 www.ti.com SNVS328E – MAY 2005 – REVISED MARCH 2007 USBpwr FULL-RATE CHARGING MODE The full-rate charge cycle is initiated following the successful completion of the pre-qualification mode. Timer TCHG starts to count when the charger enters full-rate charging, with STAT1 on and STAT2 off. If the USB bus provides the charger supply, then the default full-rate charge current is 100 mA max unless the USB_sel pin is pulled high, which sets the charge current to 500 mA max.
PAGE 10
LM3658 SNVS328E – MAY 2005 – REVISED MARCH 2007 www.ti.com Charger Timer (TCHG) The charge timer starts with the initiation of full-rate charging and has a duration of 5 hours for the LM3658. If the charge current does not reach EOC, charging stops and STAT1 and STAT2 both turn on to indicate a bad battery status. Once the charge control declares a bad battery, removing the input source is the only means to clear the bad battery status.
PAGE 11
LM3658 www.ti.com SNVS328E – MAY 2005 – REVISED MARCH 2007 Ts R2 + Logic charger control + - R1 ntc hiRef loRef DISABLING CHARGER (CHARGE INTERRUPT MODE) Charging can be safely interrupted by pulling the EN_b pin high and charging can resume upon pulling the EN_b pin low. The enable pin can be permanently tied to GND with no extra current consumption penalty during power down mode. When the charger is disabled, timer holds its count value, and STAT1 and STAT2 are both off.
PAGE 12
LM3658 SNVS328E – MAY 2005 – REVISED MARCH 2007 www.ti.com The thermal advantage of the WSON package is fully realized only when the exposed die attach pad is soldered down to a thermal land on the PCB board with thermal vias planted underneath the thermal land.
PAGE 13
LM3658 www.ti.com SNVS328E – MAY 2005 – REVISED MARCH 2007 LM3658 FLOWCHARTS LDO mode From any mode (except POR & power down) If Ts pin is floating, LM3658 goes to the LDO mode after 300 msec deglitch Powerdown Mode No VCC > VBATT + VOK Yes Yes Ts pin Is floating Yes Suspend Mode From any mode except POR and Powerdown If Ts pin is not in desired range, LM3658 enters Suspend mode. Timer stops.
PAGE 14
LM3658 SNVS328E – MAY 2005 – REVISED MARCH 2007 www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
PAGE 16
PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line.
PAGE 17
PACKAGE MATERIALS INFORMATION www.ti.com 11-Oct-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LM3658SD WSON DSC 10 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LM3658SD-A/NOPB WSON DSC 10 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LM3658SD-B/NOPB WSON DSC 10 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.
PAGE 18
PACKAGE MATERIALS INFORMATION www.ti.com 11-Oct-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LM3658SD WSON DSC 10 1000 210.0 185.0 35.0 LM3658SD-A/NOPB WSON DSC 10 1000 210.0 185.0 35.0 LM3658SD-B/NOPB WSON DSC 10 1000 210.0 185.0 35.0 LM3658SD/NOPB WSON DSC 10 1000 210.0 185.0 35.0 LM3658SDX-A/NOPB WSON DSC 10 4500 367.0 367.0 35.0 LM3658SDX-B/NOPB WSON DSC 10 4500 367.0 367.0 35.
PAGE 19
MECHANICAL DATA DSC0010A SDA10A (Rev A) www.ti.
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