Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - battery management Charge management, Power management Li-Ion, Li-Po VQFN 24 (4x4)

1 Fm

1kW

1.5kW

2kW

DisconnectafterDetection

BatteryPack

VBUS

GND

D+

D-

USBPort

DC+

GND

Adaptor

VDD

D-

D+

GND

TTDM

Host

SystemLoad

ISET/100/500mA

ISET

VSS

PRETERM

ISET2

CHG

OUT

bq24090

bq24090, bq24091

bq24092, bq24093

www.ti.com

SLUS968A –JANUARY 2010–REVISED FEBRUARY 2010

1A, Single-Input, Single Cell Li-Ion Battery Charger

Check for Samples: bq24090, bq24091

FEATURES

– Available in Small 10-Pin MSOP Package

• CHARGING

APPLICATIONS

– 1% Charge Voltage Accuracy

• Smart Phones

– 10% Charge Current Accuracy

• PDAs

– Pin Selectable USB 100mA and 500mA

• MP3 Players

Maximum Input Current Limit

• Low-Power Handheld Devices

– Programmable Termination and Precharge

Threshold

DESCRIPTION

• PROTECTION

The bq2409x series of devices are highly integrated

– 6.6V Over-Voltage Protection

Li-ion linear chargers devices targeted at

– Input Voltage Dynamic Power Management

space-limited portable applications. The devices

operate from either a USB port or AC adapter. The

– 125°C Thermal Regulation; 150°C Thermal

high input voltage range with input overvoltage

Shutdown Protection

protection supports low-cost unregulated adapters.

– OUT Short-Circuit Protection and ISET

The bq2409x has a single power output that charges

Short Detection

the battery. A system load can be placed in parallel

– Operation Over JEITA Range via Battery

with the battery as long as the average system load

NTC – 1/2 Fast-Charge-Current at Cold,

does not keep the battery from charging fully during

4.06V at Hot, bq24092/3

the 10 hour safety timer.

– Fixed 10 Hour Safety Timer

The battery is charged in three phases: conditioning,

• SYSTEM

constant current and constant voltage. In all charge

– Automatic Termination and Timer Disable phases, an internal control loop monitors the IC

junction temperature and reduces the charge current

Mode (TTDM) for Absent Battery Pack With

if an internal temperature threshold is exceeded.

Thermistor

– Status Indication – Charging/Done

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.

UNLESS OTHERWISE NOTED this document contains

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (31 pages)

PAGE 1
bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 1A, Single-Input, Single Cell Li-Ion Battery Charger Check for Samples: bq24090, bq24091 FEATURES – Available in Small 10-Pin MSOP Package 1 • • • CHARGING – 1% Charge Voltage Accuracy – 10% Charge Current Accuracy – Pin Selectable USB 100mA and 500mA Maximum Input Current Limit – Programmable Termination and Precharge Threshold PROTECTION – 6.
PAGE 2
bq24090, bq24091 bq24092, bq24093 SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 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. DESCRIPTION CONTINUED The charger power stage and charge current sense functions are fully integrated.
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bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 RECOMMENDED OPERATING CONDITIONS (1) IN voltage range VIN IN operating voltage range, Restricted by VDPM and VOVP MIN MAX 3.5 7 UNIT V 4.45 6.45 V A IIN Input current, IN pin 1.0 IOUT Current, OUT pin 1.
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bq24090, bq24091 bq24092, bq24093 SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 www.ti.
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bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 ELECTRICAL CHARACTERISTICS (continued) Over junction temperature range 0°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT RECHARGE OR REFRESH Recharge detection threshold – Normal Temp VIN = 5V, VTS = 0.5V, VOUT: 4.25V → VRCH VO(REG) -0.120 VO(REG)-0.095 VO(REG)0.070 V Recharge detection threshold – Hot Temp VIN = 5V, VTS = 0.
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bq24090, bq24091 bq24092, bq24093 SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over junction temperature range 0°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 170 178 186 mV VTS-60°C High temperature Disable, bq24092/3 High temp charge to pending; VTS: 0.2V → 0.1V VHYS-60°C Hysteresis at 60°C, bq24092/3 Charge pending to high temp CHG; VTS: 0.1V → 0.
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bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 PIN CONFIGURATION bq2409x 1 IN OUT 10 2 ISET TS 9 3 VSS CHG 8 4 PRETERM ISET2 7 5 PG NC 6 PIN FUNCTIONS NAME PIN I/O DESCRIPTION IN 1 I Input power, connected to external DC supply (AC adapter or USB port). Expected range of bypass capacitors 1mF to 10mF, connect from IN to VSS. OUT 10 O Battery Connection. System Load may be connected.
PAGE 8
bq24090, bq24091 bq24092, bq24093 SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 www.ti.com Typical Application Circuit: bq2409x IOUT_FAST_CHG = 540mA; IOUT_PRE_CHG = 108mA; IOUT_TERM = 54mA 1.5kW bq2409x Adaptor 1 IN DC+ OUT 10 1.
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bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 FUNCTIONAL BLOCK DIAGRAM Internal Charge Current Sense w/ Multiple Outputs IN OUT 80 mV OUT + _ Input Power Detect IN OUT + _ + _ + - IN-DPMREF Charge Pump IOUT x 1.5 V 540 AW OUTREGREF TJ°C + _ FAST CHARGE 125°CREF PRE-CHARGE ISET IN + _ 1.
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bq24090, bq24091 bq24092, bq24093 SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 www.ti.com TYPICAL OPERATIONAL CHARACTERISTICS SETUP: bq2409x typical applications schematic; VIN = 5V, VBAT = 3.6V (unless otherwise indicated) POWER UP, DOWN, OVP, DISABLE AND ENABLE WAVEFORMS Vin Vin 5V/div 5V/div Vchg 2V/div 2V/div Vchg Vpg 2V/div Vpg Viset 2V/div Viset 2V/div 2V/div t - time - 20ms/div t - time - 100ms/div Figure 1. OVP 8V Adaptor - Hot Plug Figure 2.
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bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 TYPICAL OPERATIONAL CHARACTERISTICS (continued) SETUP: bq2409x typical applications schematic; VIN = 5V, VBAT = 3.6V (unless otherwise indicated) Vout 1V/div Vchg Battery Declared Absent 5V/div Viset 1V/div V_0.1 W_OUT 100mV/div t - time - 20ms/div Figure 7. Battery Removal with fixed TS = 0.5V PROTECTION CIRCUITS WAVEFORMS CH4: Iout (1A/Div) Battery voltage swept from 0V to 4.25V to 3.9V.
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bq24090, bq24091 bq24092, bq24093 SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 www.ti.com TYPICAL OPERATIONAL CHARACTERISTICS (continued) SETUP: bq2409x typical applications schematic; VIN = 5V, VBAT = 3.6V (unless otherwise indicated) Vin 2V/div Vchg Vin Vout 2V/div 1V/div 2V/div Enters Thermal Regulation Exits Thermal Regulation Viset 1V/div 500mV/div V_0.1W_OUT Viset 20mV/div 50mV/div V_0.1W_OUT t - time - 500ms/div t - time - 1s/div Figure 12.
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bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 TYPICAL OPERATIONAL CHARACTERISTICS (continued) SETUP: bq2409x typical applications schematic; VIN = 5V, VBAT = 3.6V (unless otherwise indicated) 363.4 363.2 IO - Output Current - mA IO @ 25°C 363 362.8 IO @ 85°C 362.6 362.4 362.2 IO @ 0°C 362 361.8 2.5 3 3.5 VO - Output Voltage - V 4 4.5 Figure 18.
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bq24090, bq24091 bq24092, bq24093 SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 www.ti.
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bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 DETAILED FUNCTIONAL DESCRIPTION Power-Down or Undervoltage Lockout (UVLO) The bq2409x family is in power down mode if the IN pin voltage is less than UVLO. The part is considered “dead” and all the pins are high impedance. Once the IN voltage rises above the UVLO threshold the IC will enter Sleep Mode or Active mode depending on the OUT pin (battery) voltage.
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Submit Documentation Feedback Product Folder Link(s): bq24090 bq24091 0V DISHYS EN 60°C 60°CHYS 45°C 45°CHYS 10°CHYS 10°C 0°CHYS 0°C LDOHYS LDO 1.8V VSS tDGL(TS) Disabled 4.06 V HOT Operation tDGL(TS) Normal Operation tDGL(TS) 4.
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bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 Apply Input Power Is power good? VBAT +VDT < VIN < VOVP & VUVLO < VIN No Turn on PG FET PG pin LOW Yes Is chip enabled? VTS > VEN No Yes Set Input Current Limit to 100 mA and Start Charge Perform ISET & OUT short tests Remember ISET2 State Set charge current based on ISET2 truth table. Return to Charge Figure 21.
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bq24090, bq24091 bq24092, bq24093 SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 www.ti.com Power Good Indication (PG) After application of a 5V source, the input voltage rises above the UVLO and sleep thresholds (VIN>VBAT+VDT), but is less than OVP (VIN
PAGE 19
bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 ISET An external resistor is used to Program the Output Current (50 to 800mA) and can be used as a current monitor. RISET = KISET ÷ IOUT (1) (1) Where: IOUT is the desired fast charge current; KISET is a gain factor found in the electrical specification For greater accuracy at lower currents, part of the sense FET is disabled to give better resolution.
PAGE 20
bq24090, bq24091 bq24092, bq24093 1.8 1.6 IO - Output Current - A 1.4 www.ti.com IOUT Clamp min - max IOUT Fault min - max SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 1.2 IOUT Internal Clamp Range 1 0.8 IOUT Programmed max 0.6 ISET Short Fault Range min 0.4 0.2 Non Restricted Operating Area 0 1000 100 10000 ISET - W Figure 23.
PAGE 21
bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 TS The TS pin is designed to follow the new JEITA temperature standard for Li-Ion batteries. There are now four thresholds, 60°C, 45°C, 10°C, and 0°C. Normal operation occurs between 10°C and 45°C. If between 0°C and 10°C the charge current level is cut in half and if between 45°C and 60°C the regulation voltage is reduced to 4.1Vmax, see Figure 22.
PAGE 22
bq24090, bq24091 bq24092, bq24093 SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 www.ti.com Battery Detect Routine The battery detect routine should check for a missing battery while keeping the OUT pin at a useable voltage. Whenever the battery is missing the CHG pin should be high impedance. The battery detect routine is run when entering and exiting TTDM to verify if battery is present, or run all the time if battery is missing and not in TTDM.
PAGE 23
bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 Start BATT_DETECT Start 25ms timer Timer Expired? No Yes Is VOUTVREG-300mV? Battery Present Turn off Sink Current Return to flow No Battery Absent Don’t Signal Charge Turn off Sink Current Return to Flow Figure 24.
PAGE 24
bq24090, bq24091 bq24092, bq24093 SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 www.ti.com bq24090 CHARGER APPLICATION DESIGN EXAMPLE 1.5kW bq24090 Adaptor 1 IN DC+ OUT 10 1.
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bq24090, bq24091 bq24092, bq24093 www.ti.com SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 CHG and PG LED Status: connect a 1.5k resistor in series with a LED between the OUT pin and the CHG pin. Connect a 1.5k resistor in series with a LED between the OUT pin and the and PG pin. Processor Monitoring: Connect a pull-up resistor between the processor’s power rail and the CHG pin. Connect a pull-up resistor between the processor’s power rail and the PG pin.
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bq24090, bq24091 bq24092, bq24093 SLUS968A – JANUARY 2010 – REVISED FEBRUARY 2010 www.ti.com Leakage Current Effects on Battery Capacity To determine how fast a leakage current on the battery will discharge the battery is an easy calculation. The time from full to discharge can be calculated by dividing the Amp-Hour Capacity of the battery by the leakage current. For a 0.75AHr battery and a 10mA leakage current (750mAHr/0.010mA = 75000 Hours), it would take 75k hours or 8.8 years to discharge.
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PACKAGE OPTION ADDENDUM www.ti.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.