Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - battery management Charge management, Power management Li-Ion QFN 16 (3x3) Surface-

VSS

BAT

bq24075

bq24079

OUT

TEMP

PACK+

PACK-

SYSTEM

SYSOFF

System

ON/OFF

Control

1 Fm

4.7 Fm

1.13kW1.18kW

1kW

PGOOD

CHG

EN1

ILM

TMR

ISET

bq24072, bq24073

bq24074, bq24075, bq24079

www.ti.com

SLUS810G –SEPTEMBER 2008–REVISED JULY 2011

1.5A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT IC

Check for Samples: bq24072, bq24073, bq24074, bq24075, bq24079

FEATURES

DESCRIPTION

• Fully Compliant USB Charger

The bq2407x series of devices are integrated Li-ion

– Selectable 100mA and 500mA Maximum

linear chargers and system power path management

Input Current

devices targeted at space-limited portable

– 100mA Maximum Current Limit Ensures

applications. The devices operate from either a USB

Compliance to USB-IF Standard

port or AC adapter and support charge currents up to

– Input based Dynamic Power Management

1.5A. The input voltage range with input overvoltage

-DPM) for Protection Against Poor USB

protection supports unregulated adapters. The USB

Sources

input current limit accuracy and start up sequence

• 28V Input Rating with Overvoltage Protection

allow the bq2407x to meet USB-IF inrush current

specification. Additionally, the input dynamic power

• Integrated Dynamic Power Path Management

management (V

-DPM) prevents the charger from

(DPPM) Function Simultaneously and

crashing incorrectly configured USB sources.

Independently Powers the System and

Charges the Battery

The bq2407x features dynamic power path

• Supports up to 1.5A Charge Current with

management (DPPM) that powers the system while

Current Monitoring Output (ISET)

simultaneously and independently charging the

battery. The DPPM circuit reduces the charge current

• Programmable Input Current Limit up to 1.5A

when the input current limit causes the system output

for Wall Adapters

to fall to the DPPM threshold; thus, supplying the

• System Output Tracks Battery Voltage

system load at all times while monitoring the charge

(bq24072)

current separately. This feature reduces the number

• Programmable Termination Current (bq24074)

of charge and discharge cycles on the battery, allows

• Battery Disconnect Function with SYSOFF

for proper charge termination and enables the system

Input (bq24075, bq24079)

to run with a defective or absent battery pack.

• Programmable Pre-Charge and Fast-Charge

Safety Timers

Typical Application Circuit

• Reverse Current, Short-Circuit and Thermal

Protection

• NTC Thermistor Input

• Proprietary Start Up Sequence Limits Inrush

Current

• Status Indication – Charging/Done, Power

Good

• Small 3 mm × 3 mm 16 Lead QFN Package

APPLICATIONS

• Smart Phones

• Portable Media Players

• Portable Navigation Devices

• Low-Power Handheld 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.

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 (42 pages)

PAGE 1
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com 1.5A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT IC Check for Samples: bq24072, bq24073, bq24074, bq24075, bq24079 FEATURES 1 • • 1kW 1kW IN IN 13 System ON/OFF Control 15 EN 2 5 BAT 2 3 SYSOFF SYSTEM 4.7mF PACK+ 12 TS 1 TEMP 16 6 4 Smart Phones Portable Media Players Portable Navigation Devices Low-Power Handheld Devices 10 11 4.
PAGE 2
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
PAGE 3
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com ABSOLUTE MAXIMUM RATINGS (1) over the 0°C to 125°C operating free-air temperature range (unless otherwise noted) VALUE VI Input Voltage II Input Current UNIT MIN MAX IN (with respect to VSS) –0.3 28 V BAT (with respect to VSS) –0.3 5 V OUT, EN1, EN2, CE, TS, ISET, PGOOD, CHG, ILIM, TMR, ITERM, SYSOFF, TD (with respect to VSS) –0.3 7 V 1.
PAGE 4
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com ELECTRICAL CHARACTERISTICS Over junction temperature range (0° ≤ TJ ≤ 125°C) and the recommended supply voltage range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP 3.3 MAX UNIT INPUT UVLO Undervoltage lock-out VIN: 0 V → 4 V 3.2 Vhys Hysteresis on UVLO VIN: 4 V → 0 V 200 VIN(DT) Input power detection threshold Input power detected when VIN > VBAT + VIN(DT) VBAT = 3.6 V, VIN: 3.
PAGE 5
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over junction temperature range (0° ≤ TJ ≤ 125°C) and the recommended supply voltage range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT BATTERY CHARGER IBAT Source current for BAT pin short-circuit detection VBAT = 1.
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bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over junction temperature range (0° ≤ TJ ≤ 125°C) and the recommended supply voltage range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT LOGIC LEVELS ON EN1, EN2, CE, SYSOFF, TD VIL Logic LOW input voltage 0 0.4 VIH Logic HIGH input voltage 1.4 6 V V IIL Input sink current VIL= 0V 1 μA IIH Input source current VIH= 1.
PAGE 7
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com PIN FUNCTIONS (continued) PIN I/O DESCRIPTION 14 I Timer Programming Input. TMR controls the pre-charge and fast-charge safety timers. Connect TMR to VSS to disable all safety timers. Connect a 18 kΩ to 72 kΩ resistor between TMR and VSS to program the timers a desired length. Leave TMR unconnected to set the timers to the default values. – – I Termination Disable Input.
PAGE 8
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com SIMPLIFIED BLOCK DIAGRAM 250mV VO(SC1) VBAT OUT-SC1 t DGL(SC2) OUT-SC2 Q1 IN OUT EN2 Short Detect 225mV Precharge VIN-LOW USB100 USB500 ILIM ISET 2.
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bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com TYPICAL CHARACTERISTICS VIN = 6V, EN1=1, EN2=0, bq24073 application circuit, TA = 25°C, unless otherwise noted. ADAPTER PLUG-IN BATTERY CONNECTED RLOAD = 10Ω VIN 5 V/div BATTERY DETECTION BATTERY INSERTED VCHG BATTERY DETECTION BATTERY REMOVED 5 V/div VCHG 5 V/div Charging Initiated VOUT 4.4 V 1 A/div 500 mV/div VBAT 3.
PAGE 10
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) VIN = 6V, EN1=1, EN2=0, bq24073 application circuit, TA = 25°C, unless otherwise noted. SYSTEM ON/OFF WITH INPUT NOT CONNECTED VIN = 0V bq24075, bq24079 VSYSOFF DROPOUT VOLTAGE vs TEMPERATURE THERMAL REGULATION 600 0.7 500 0.
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bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) VIN = 6V, EN1=1, EN2=0, bq24073 application circuit, TA = 25°C, unless otherwise noted. bq24073/ 74 OUTPUT REGULATION VOLTAGE vs TEMPERATURE bq24075, bq24079 OUTPUT REGULATION VOLTAGE vs TEMPERATURE 4.45 5.75 VIN = 5 V, IL = 1 A 4.43 4.210 VIN = 6 V, IL = 1 A 5.70 4.40 4.38 4.35 VBAT - Regulation Voltage - V 5.
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bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) VIN = 6V, EN1=1, EN2=0, bq24073 application circuit, TA = 25°C, unless otherwise noted. FASTCHARGE CURRENT vs BATTERY VOLTAGE FASTCHARGE CURRENT vs BATTERY VOLTAGE 310 1.05 105 RISET = 900 W RISET = 3 kW 1.03 1.01 0.99 0.
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bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com APPLICATION CIRCUITS VIN = UVLO to VOVP, IFASTCHG = 800mA, IIN(MAX) = 1.3A, Battery Temperature Charge Range = 0°C to 50°C, 6.25 hour Fastcharge Safety Timer R4 1.5 kW R5 1.5 kW DC+ PGOOD Adaptor IN C1 1 mF GND CHG SYSTEM OUT C2 4.7 mF VSS bq24072 bq24073 HOST EN2 EN1 TS TD CE BAT PACK- R1 46.4 kW ISET TMR C3 4.7 mF ILM PACK+ TEMP R2 1.18 kW R3 1.13 kW Figure 26.
PAGE 14
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com VIN = UVLO to VOVP, IFASTCHG = 800mA, IIN(MAX) = 1.3A, ITERM = 110mA, Battery Temperature Charge Range = 0°C to 50°C, Safety Timers disabled R4 1.5 kW R5 1.5 kW DC+ IN C1 1 mF GND PGOOD Adaptor CHG SYSTEM OUT C2 4.7 mF VSS bq24074 EN2 EN1 TS TMR CE ILM C3 4.7mF ITERM PACK+ TEMP R1 4.12 kW PACK- ISET BAT R2 1.18 kW R3 1.13 kW Figure 27.
PAGE 15
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com EXPLANATION OF DEGLITCH TIMES AND COMPARATOR HYSTERESIS Figures not to scale VOVP VOVP - Vhys(OVP) VIN Typical Input Voltage Operating Range t < tDGL(OVP) VBAT + VIN(DT) VBAT + VIN(DT) - Vhys(INDT) UVLO UVLO - Vhys(UVLO) PGOOD tDGL(PGOOD) tDGL(OVP) tDGL(NO-IN) tDGL(PGOOD) Figure 29.
PAGE 16
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com Turn Q2 OFF Force Q2 ON tREC(SC2) Turn Q2 OFF Force Q2 ON tREC(SC2) VBAT - VOUT Recover VO(SC2) t < tDGL(SC2) tDGL(SC2) tDGL(SC2) t < tDGL(SC2) Figure 32. OUT Short-Circuit – Supplement Mode VCOLD VCOLD - Vhys(COLD) t < tDGL(TS) VTS Suspend Charging tDGL(TS) Resume Charging VHOT - Vhys(HOT) VHOT Figure 33. Battery Pack Temperature Sensing – TS Pin.
PAGE 17
bq24072, bq24073 bq24074, bq24075, bq24079 www.ti.com SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 DETAILED FUNCTIONAL DESCRIPTION The bq2407x devices are integrated Li-Ion linear chargers and system power path management devices targeted at space-limited portable applications. The device powers the system while simultaneously and independently charging the battery.
PAGE 18
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com PGOOD = Hi-Z CHG = Hi-Z BATTFET ON UVLO V BAT +VIN(DT) No Yes PGOOD = Low EN1=EN2=1 Yes No Yes ILIM or ISET short? No Begin Startup I IN(MAX) 100mA VOUT short? Yes No Input Current Limit set by EN1 and EN2 No CE = Low Yes Begin Charging Figure 34.
PAGE 19
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com OVERVOLTAGE PROTECTION (OVP) The bq2407x accepts inputs up to 28V without damage. Additionally, an overvoltage protection (OVP) circuit is implemented that shuts off the internal LDO and discontinues charging when VIN > VOVP for a period long than tDGL(OVP). When in OVP, the system output (OUT) is connected to the battery and PGOOD is high impedance.
PAGE 20
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com Input DPM Mode (VIN-DPM) The bq2407x utilizes the VIN-DPM mode for operation from current-limited USB ports. When EN1 and EN2 are configured for USB100 (EN2=0, EN1=0) or USB500 (EN2=0, EN2=1) modes, the input voltage is monitored. If VIN falls to VIN-DPM, the input current limit is reduced to prevent the input voltage from falling further.
PAGE 21
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com 1200 mA IOUT 900 mA A 400 mA 0 mA IIN 900 mA 500 mA 0 mA IBAT 500 mA 0 mA -300 mA DPPM Loop Active Supplement Mode VOUT 3.8 V 3.7 V ~3.6 V Figure 37. bq24072 DPPM and Battery Supplement Modes (VOREG = VBAT + 225mV, VBAT = 3.
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bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com 1200 mA IOUT 900 mA A 400 mA 0 mA 900 mA IIN 500 mA 0 mA IBAT 500 mA 0 mA -300 mA VOUT 4.4 V 4.3 V DPPM Loop Active Supplement Mode ~3.6 V Figure 38. bq24073 DPPM and Battery Supplement Modes (VOREG = 4.4V, VBAT = 3.6V) INPUT SOURCE NOT CONNECTED When no source is connected to the IN input, OUT is powered strictly from the battery.
PAGE 23
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com PRECHARGE CC FAST CHARGE CV TAPER DONE VBAT(REG) IO(CHG) Battery Current Battery Voltage VLOWV CHG = Hi-z I(PRECHG) I(TERM) Figure 39. Typical Charge Cycle In the pre-charge phase, the battery is charged at with the pre-charge current (IPRECHG). Once the battery voltage crosses the VLOWV threshold, the battery is charged with the fast-charge current (ICHG).
PAGE 24
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.
PAGE 25
bq24072, bq24073 bq24074, bq24075, bq24079 www.ti.com SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 ADJUSTABLE TERMINATION THRESHOLD (ITERM Input, bq24074) The termination current threshold in the bq24074 is user-programmable. Set the termination current by connecting a resistor from ITERM to VSS. For USB100 mode (EN1 = EN2 = Low), the termination current value is calculated as: ITERM = 0.
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bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com During each of these events, the internal timers are slowed down proportionately to the reduction in charging current. For example, if the charging current is reduced by half for two minutes, the timer clock is reduced to half the frequency and the counter counts half as fast resulting in only one minute of "counting" time.
PAGE 27
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com PRECHARGE THERMAL REGULATION CC FAST CHARGE CV TAPER DONE VO(REG) IO(CHG) Battery Voltage Battery Current V(LOWV) HI-z I(PRECHG) I(TERM) TJ(REG) IC Junction Temperature, TJ Figure 41.
PAGE 28
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com BATTERY PACK TEMPERATURE MONITORING The bq2407x features an external battery pack temperature monitoring input. The TS input connects to the NTC thermistor in the battery pack to monitor battery temperature and prevent dangerous over-temperature conditions. During charging, INTC is sourced to TS and the voltage at TS is continuously monitored.
PAGE 29
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com RHOT and RCOLD are the thermistor resistance at the desired hot and cold temperatures, respectively. Note that the temperature window cannot be tightened more than using only the thermistor connected to TS, it can only be extended. I NTC bq2407x RS TS + PACK+ TEMP VCOLD RP + VHOT PACK- Figure 42.
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bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com APPLICATIONS INFORMATION bq2407x CHARGER DESIGN EXAMPLE See Figure 26 to Figure 28 for Schematics of the Design Example. Requirements • • • • • • Supply voltage = 5V Fast charge current of approximately 800 mA; ISET - pin 16 Input Current Limit =1.3A; ILIM - pin 12 Termination Current Threshold = 110mA; ITERM – pin 15 (bq24074 only) Safety timer duration, Fast-Charge = 6.
PAGE 31
bq24072, bq24073 bq24074, bq24075, bq24079 www.ti.com SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 CHG and PGOOD LED Status: connect a 1.5kΩ resistor in series with a LED between OUT and CHG to indicate charging status. Connect a 1.5kΩ resistor in series with a LED between OUT and PGOOD to indicate when a valid input source is connected.
PAGE 32
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com The device power dissipation, P, is a function of the charge rate and the voltage drop across the internal PowerFET. It can be calculated from the following equation when a battery pack is being charged : P = [V(IN) – V(OUT)] × I(OUT) + [V(OUT) – V(BAT)] × I(BAT) (3) The thermal loop feature reduces the charge current to limit excessive IC junction temperature.
PAGE 33
bq24072, bq24073 bq24074, bq24075, bq24079 SLUS810G – SEPTEMBER 2008 – REVISED JULY 2011 www.ti.com REVISION HISTORY Changes from Original (September 2008) to Revision A Page • Changed device Features. .................................................................................................................................................... 1 • Changed Description. .................................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 Orderable Device Status (1) BQ24079RGTT Package Type Package Pins Package Drawing Qty ACTIVE QFN RGT 16 250 Eco Plan Lead/Ball Finish (2) Green (RoHS & no Sb/Br) MSL Peak Temp Op Temp (°C) Top-Side Markings (3) CU NIPDAU Level-2-260C-1 YEAR (4) -40 to 85 ODI (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 1-Oct-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing BQ24072RGTR QFN RGT 16 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 BQ24072RGTT QFN RGT 16 250 180.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 BQ24073RGTR QFN RGT 16 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 1-Oct-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ24072RGTR QFN RGT 16 3000 367.0 367.0 35.0 BQ24072RGTT QFN RGT 16 250 210.0 185.0 35.0 BQ24073RGTR QFN RGT 16 3000 367.0 367.0 35.0 BQ24073RGTR QFN RGT 16 3000 367.0 367.0 35.0 BQ24073RGTT QFN RGT 16 250 210.0 185.0 35.0 BQ24073RGTT QFN RGT 16 250 210.0 185.0 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.