Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - battery management Charge management Li-Ion, Li-Po VSON 10 (3x3) Surface-mount

OUT

STAT1

STAT2

VBSEL

ISET

SET

bq24080

BatteryPackPACK+

PACK–

System

Interface

VDC

GND

Adapter

0.1 F

0.1µF

1.13kW

bq24080

bq24081

www.ti.com

SLUS698E –MARCH 2006– REVISED AUGUST 2011

1-A, SINGLE-CHIP, LI-ION AND LI-POL CHARGER IC

Check for Samples: bq24080, bq24081

FEATURES

• Internet Appliances

• Smartphones

• Integrated Power FET and Current Sensor for

Up to 1-A Charge Applications From AC

DESCRIPTION

Adapter

The bq24080 and bq24081 are highly integrated and

• Precharge Conditioning With Safety Timer

flexible Li-Ion linear charge devices targeted at

• Charge and Power-Good Status Output

space-limited charger applications. They offer an

• Automatic Sleep Mode for Low Power

integrated power FET and current sensor,

Consumption

high-accuracy current and voltage regulation, charge

status, and charge termination, in a single monolithic

• Integrated Charge-Current Monitor

device. An external resistor sets the magnitude of the

• Fixed 7-Hour Fast Charge Safety Timer

charge current.

• Ideal for Low-Dropout Charger Designs for

The device charges the battery in three phases:

Single-Cell Li-Ion or Li-Pol Packs in

conditioning, constant current, and constant voltage.

Space-Limited Portable Applications

Charge is terminated based on minimum current. An

• Small 3-mm × 3-mm SON Package

internal charge timer provides a backup safety for

charge termination. The device automatically restarts

the charge if the battery voltage falls below an

APPLICATIONS

internal threshold. The device automatically enters

• PDAs, MP3 Players

sleep mode when the ac adapter is removed.

• Digital Cameras

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.

2PowerPAD is a trademark of Texas Instruments.

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 (26 pages)

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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ORDERING INFORMATION TJ CHARGE REGULATION VOLTAGE (V) FUNCTIONS FAST-CHARGE TIMER (HOURS) –40°C to 125°C 4.2 CE and PG 7 –40°C to 125°C 4.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com ELECTRICAL CHARACTERISTICS over 0°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX 1.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com ELECTRICAL CHARACTERISTICS (continued) over 0°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VO(REG) – 0.115 VO(REG) − 0.10 VO(REG) − 0.085 250 375 500 ms 0.25 V BATTERY RECHARGE THRESHOLD V(RCH) Recharge threshold t(DEGL) Deglitch time for recharge detect VCC(MIN) ≥ 4.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com PIN ASSIGNMENT DRC PACKAGE (TOP VIEW) VSS 5 STAT2 STAT1 GND IN VSS 3 1 5 4 2 STAT2 STAT1 GND IN 3 1 4 bq24080 6 7 ISET GND 8 PG 2 bq24081 9 10 CE OUT 6 7 ISET GND 8 TE 9 10 TS OUT P0051-01 PIN FUNCTIONS PIN NAME CE NO. I/O DESCRIPTION bq24080 bq24081 9 – I Charge enable input (active-low) 2, 7 2, 7 – Ground IN 1 1 I Adapter dc voltage. Connect minimum 0.1-μF capacitor to VSS.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS DROPOUT VOLTAGE vs JUNCTION TEMPERATURE 450 IO(OUT) = 1000 mA 400 Dropout Voltage - mV 350 IO(OUT) = 750 mA 300 250 IO(OUT) = 500 mA 200 150 IO(OUT) = 250 mA 100 50 0 0 50 100 o TJ - Junction Temperature - C 150 Figure 1. Figure 2.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) Figure 3. Charge Enable Power-Up Sequence (CE = High-to-Low) Figure 4.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) (6) Deglitch timer expires – charge done is declared. Figure 5.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com FUNCTIONAL DESCRIPTION The device supports a precision Li-Ion, Li-Pol charging system suitable for single cells. Figure 6 shows a typical charge profile, and Figure 7 shows an operational flow chart.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com Battery Preconditioning During a charge cycle, if the battery voltage is below the V(LOWV) threshold, the device applies a precharge current, IO(PRECHG), to the battery. This feature revives deeply discharged cells. Resistor RSET, connected between the ISET and VSS, determines the precharge rate. The V(PRECHG) and K(SET) parameters are specified in the Electrical Characteristics table.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com Sleep Mode The device enters the low-power sleep mode if the input power (IN) is removed from the circuit. This feature prevents draining the battery during the absence of input supply. Charge Status Outputs The open-drain STAT1 and STAT2 outputs indicate various charger operations as shown in the following table. These status pins can be used to drive LEDs or communicate to the host processor.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com bq24081 ITS VHTF PACK+ TS NTC VLTF PACK– B0194-01 Figure 8. Default Temperature Thresholds bq24081 ITS VHTF PACK+ RT1 TS NTC RT2 VLTF PACK– B0195-01 Figure 9.
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bq24080 bq24081 www.ti.com SLUS698E – MARCH 2006 – REVISED AUGUST 2011 Timer Fault and Recovery As shown in Figure 7, the device provides a recovery method to deal with timer fault conditions. The following summarizes this method: Condition Number 1 OUT pin voltage is above the recharge threshold (V(RCH)), and a timeout fault occurs. Recovery method: the device waits for the OUT pin voltage to fall below the recharge threshold.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com APPLICATION INFORMATION bq24080/1 CHARGER DESIGN EXAMPLE Requirements • Supply voltage = 5 V • Fast-charge current of approximately 750 mA • Battery-Temperature sense (bq24081): default setting = –2°C to 44.5°C Calculations Program the charge current for 750 mA: RISET = [V(SET) × K(SET) / I(OUT)] From electrical characteristics table, V(SET) = 2.5 V. From electrical characteristics table, K(SET) = 322. RISET = [2.5 V × 322 / 0.
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bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com 1.5 kW SOURCE INPUT VDC bq24080 C1 0.1 mF 1 IN OUT C2 0.1 mF 1.5 kW GND 1.5 kW PACK+ 10 2 GND CE 9 3 STAT1 PG 8 4 STAT2 GND 7 5 VSS ISET 6 + PACK– 1.13 kW RSET Charge Current Translator Output Figure 10. Typical Application Circuit Thermal Considerations The bq24080 and bq24081 are packaged in a thermally enhanced MLP package.
PAGE 18
bq24080 bq24081 SLUS698E – MARCH 2006 – REVISED AUGUST 2011 www.ti.com PCB Layout Considerations It is important to pay special attention to the PCB layout. The following provides some guidelines: • To obtain optimal performance, the decoupling capacitor from VCC to V(IN) and the output filter capacitors from OUT to VSS should be placed as close as possible to the device, with short trace runs to both signal and VSS pins. The VSS pin should have short trace runs to the GND pin.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side 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 Top-Side Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 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 BQ24080DRCR SON DRC 10 3000 330.0 12.4 3.3 3.3 1.0 8.0 12.0 Q2 BQ24080DRCR SON DRC 10 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 BQ24080DRCT SON DRC 10 250 330.0 12.4 3.3 3.3 1.0 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ24080DRCR SON DRC 10 3000 370.0 355.0 55.0 BQ24080DRCR SON DRC 10 3000 367.0 367.0 35.0 BQ24080DRCT SON DRC 10 250 195.0 200.0 45.0 BQ24080DRCT SON DRC 10 250 210.0 185.0 35.0 BQ24081DRCR SON DRC 10 3000 367.0 367.0 35.0 BQ24081DRCT SON DRC 10 250 210.0 185.0 35.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.