Datasheet

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

VSS

BAT

GND

Adaptor

bq24075T

bq24079T

OUT

CHG

PGOOD

TMR

EN1

EN2

ILIM

ISET

TEMP

PACK-

SYSTEM

SYSOFF

System

ON /OFF

Control

1mF

4.7 mF

1 kW

1.18 kW

1 kW

10 kW

1.13 kW

13 kW

PACK+

bq24072T

bq24075T, bq24079T

www.ti.com

SLUS937A –DECEMBER 2009–REVISED APRIL 2010

1.5A USB-Friendly Li-Ion Battery Charger and Power-Path Management IC

Check for Samples: bq24072T, bq24075T, bq24079T

FEATURES

• Proprietary Start Up Sequence Limits Inrush

Current

• Fully Compliant USB Charger

• Status Indication – Charging/Done, Power

• Selectable 100mA and 500mA Maximum Input

Good

Current

• Small 3 mm × 3 mm 16 Lead QFN Package

• 100mA Maximum Current Limit Ensures

Compliance to USB-IF Standard

APPLICATIONS

• Input based Dynamic Power Management

• Smart Phones

(VIN-DPM) for Protection Against Poor USB

• PDAs

Sources

• MP3 Players

• 28V Input Rating with Over-voltage Protection

• Low-Power Handheld Devices

• Integrated Dynamic Power Path Management

(DPPM) Function Simultaneously and

DESCRIPTION

Independently Powers the System and

Charges the Battery

The bq2407xT series of devices are integrated Li-ion

linear chargers and system power path management

• System Output Tracks Battery Voltage

devices targeted at space-limited portable

(bq24072T)

applications. The devices operate from either a USB

• Supports up to 1.5A Charge Current with

port or AC adapter and support charge currents up to

Current Monitoring Output (ISET)

1.5A. The input voltage range with input over-voltage

protection supports unregulated adapters. The USB

• Programmable Input Current Limit up to 1.5A

input current limit accuracy and start up sequence

for Wall Adapters

allow the bq2407xT to meet USB-IF inrush current

• Battery Disconnect Function with SYSOFF

specification. Additionally, the input dynamic power

Input

management (V

-DPM) prevents the charger from

• Reverse Current, Short-Circuit and Thermal

crashing incorrectly configure USB sources.

Protection

(Description continued on next page)

• Flexible Voltage Based NTC Thermistor Input

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 (37 pages)

PAGE 1
bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 1.
PAGE 2
bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 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.
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bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 ABSOLUTE MAXIMUM RATINGS (1) (2) over operating free-air temperature range (unless otherwise noted) VALUE / UNIT Input voltage Input current IN (with respect to VSS) –0.3 to 28 V BAT (with respect to VSS) –0.3V to 5V OUT, EN1, EN2, CE, TS, ISET, PGOOD, CHG, ILIM, VREF, ITERM, SYSOFF, TD (with respect to VSS) –0.3 TO 7 V IN 1.
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bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 www.ti.com ELECTRICAL CHARACTERISTICS Over junction temperature range (0°C < TJ < 125°C) and the recommended supply voltage range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 3.3 3.4 V 300 mV 140 mV INPUT VUVLO Under-voltage lock-out VIN: 0V → 4V 3.2 VHYS- Hysteresis on UVLO VIN: 4V → 0V 200 VIN-DT Input power detection threshold (Input power detected if VIN > VBAT + VIN-DT) VBAT = 3.
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bq24072T bq24075T, bq24079T www.ti.
PAGE 6
bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 www.ti.
PAGE 7
bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 DEVICE INFORMATION PIN DIAGRAM Pin out designations are not final. Subject to change.
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bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 www.ti.com TERMINAL FUNCTIONS (continued) PIN NUMBER NAME bq24072T bq24075T bq24079T I/O IN 13 13 I Input Power Connection. Connect IN to the external DC supply (AC adapter or USB port). The input operating range is 4.35V to 6.6V. The input accepts voltages up to 26V without damage, but operation is suspended. Bypass IN to VS with a 1mF to 10mF ceramic capacitor. TMR 14 14 I Timer Programming Input.
PAGE 9
bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 SIMPLIFIED BLOCK DIAGRAM 250mV VO(SC1) V BAT OUT-SC1 t DGL(SC2) OUT- SC2 Q1 IN OUT EN2 Short Detect 225mV Precharge VIN-LOW USB100 USB5 00 ISET 2.
PAGE 10
bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 www.ti.com TYPICAL CHARACTERISTICS VIN = 6V, EN1 = 1, EN2 = 0, TA = 25°C, unless otherwise noted. ADAPTER PLUG-IN BATTERY CONNECTED RLOAD = 10Ω VIN BATTERY DETECTION BATTERY INSERTED 5 V/div VCHG BATTERY DETECTION BATTERY REMOVED 5 V/div VCHG 5 V/div Charging Initiated 1 A/div 500 mV/div VBAT 3.
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bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 TYPICAL CHARACTERISTICS (continued) VIN = 6V, EN1 = 1, EN2 = 0, TA = 25°C, unless otherwise noted. SYSTEM ON/OFF WITH INPUT NOT CONNECTED VIN = 0V VSYSOFF DROPOUT VOLTAGE vs TEMPERATURE THERMAL REGULATION 600 0.7 500 0.6 IL = 1 A IBAT - mA VBAT 4V 2 V/div VOUT Battery Powering System Dropout Voltage - VIN-VOUT 5 V/div 400 300 200 System Power Off IBAT 500 mA/div 100 0.3 0.
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bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 www.ti.com TYPICAL CHARACTERISTICS (continued) VIN = 6V, EN1 = 1, EN2 = 0, TA = 25°C, unless otherwise noted. BAT REGULATION VOLTAGE vs TEMPERATURE bq24075T OUTPUT REGULATION VOLTAGE vs TEMPERATURE VIN = 6 V, IL = 1 A 5.70 VBAT - Regulation Voltage - V VO - Output Voltage - V 5.65 5.60 5.55 5.50 5.45 5.40 5.35 4.210 4.11 4.205 4.105 VBAT - Regulation Voltage - V 5.75 BATTERY REGULATION VOLTAGE vs TEMPERATURE bq24079T 4.
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bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 TYPICAL CHARACTERISTICS (continued) VIN = 6V, EN1 = 1, EN2 = 0, TA = 25°C, unless otherwise noted. FASTCHARGE CURRENT vs BATTERY VOLTAGE FASTCHARGE CURRENT vs BATTERY VOLTAGE 31.
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bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 www.ti.com APPLICATION CIRCUITS R4 1.5 kW R5 1.5 kW SYSTEM IN C1 1µF GND CHG DC+ PGOOD Adaptor OUT C2 4.7µF VSS HOST bq24075T bq24079T R8 100 kW EN2 EN1 TS SYSOFF CE BAT T MR TEMP ISET PACK + C3 4.7 µF ILIM R6 10 kW R7 13.2 kW PACK - R1 46.8 kW R2 1.18 kW R3 1.13 kW NOTE: VIN = UVLO to VOVP, IFASTCHG = 800mA, IIN(MAX) = 1.35A, Battery Temperature Charge Range = 0°C to 50°C, 6.
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bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 R5 1.5 kW R4 1.5 kW DC+ PGOOD Adaptor IN C1 1 mF GND CHG SYSTEM OUT C2 4.7 mF VSS HOST bq24072T EN2 R8 100 kW EN1 TS TD CE BAT C3 4.7 mF R7 13.2 kW PACK- R1 46.4 kW ISET PACK+ TMR TEMP ILM R6 10 kW R2 1.18 kW R3 1.13 kW Figure 26.
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bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 www.ti.com POWER ON When VIN exceeds the UVLO threshold, the bq2407xT powers up. While VIN is below VBAT + VIN(DT), the host commands at the control inputs (CE, EN1 and EN2) are ignored. The Q1 FET connected between IN and OUT pins is off, and the status outputs CHG and PGOOD are high impedance. The Q2 FET that connects BAT to OUT is ON. (If SYSOFF is high, Q2 is off).
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bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 OVERVOLTAGE PROTECTION (OVP) The bq2407xT 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 longer than tDGL(OVP). When in OVP, the system output (OUT) is connected to the battery and PGOOD is high impedance.
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bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 www.ti.com When the IN source is connected, priority is given to the system load. The DPPM and Battery Supplement modes are used to maintain the system load. Figure 30 illustrates an example of the DPPM and supplement modes. These modes are explained in detail in the following sections. Input DPM Mode (VIN-DPM) The bq2407xT utilizes the VIN-DPM mode for operation from current-limited USB ports.
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bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 5.5 V Figure 30. bq24075T, '79T DPPM and Battery Supplement Modes (VOREG = 5.5V, VBAT = 3.6V) IOUT 1200 mA 900 mA A 400 mA 0 mA IIN 900 mA 500 mA IBAT 0 mA 500 mA 0 mA -300 mA 3.8 V 3.7 V ~3.6 V DPPM Loop Active VOUT Supplement Mode Figure 31. bq24072T DPPM and Battery Supplement Modes (VOREG = VBAT + 225mV, VBAT = 3.
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bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 www.ti.com INPUT SOURCE NOT CONNECTED When no source is connected to the IN input, OUT is powered strictly from the battery. During this mode the current into OUT is not regulated, similar to Battery Supplement Mode, however the short circuit circuitry is active. If the OUT voltage falls below the BAT voltage by 250mV for longer than tDGL(SC2), OUT is turned off. The short circuit recovery timer then starts counting.
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bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 CHARGE CURRENT TRANSLATOR When the charger is enabled, internal circuits generate a current proportional to the charge current at the ISET input. The current out of ISET is 1/400 (±10%) of the charge current. This current, when applied to the external charge current programming resistor, RISET, generates an analog voltage that can be monitored by an external host to calculate the current sourced from BAT.
PAGE 22
bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 www.ti.com BATTERY DETECTION AND RECHARGE The bq2407xT automatically detects if a battery is connected or removed. Once a charge cycle is complete, the battery voltage is monitored. When the battery voltage falls below VRCH, the battery detection routine is run. During battery detection, current (IBAT(DET)) is pulled from the battery for a duration tDET to see if the voltage on BAT falls below VLOWV. If not, charging begins.
PAGE 23
bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 The charge cycle after power-up, CE going low, or exiting OVP is indicated with the CHG output on (low - LED on), whereas all refresh (subsequent) charges will result in the CHG output off (open – LED off). In addition, the CHG signals timer faults by flashing at approximately 2Hz. Table 2.
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bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 PRECHARGE THERMAL REGULATION www.ti.com 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 34. Charge Cycle Modified by Thermal Loop BATTERY PACK TEMPERATURE MONITORING The bq2407xT features an external battery pack temperature monitoring input.
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bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 é 1 1 ù VIN ´ RCOLD ´ RHOT ´ ê ú V V HOT û ë COLD R7 = é V ù é V ù RHOT ´ ê IN - 1ú - RCOLD ´ ê IN - 1ú ëVHOT û ëVCOLD û (2) Where: VCOLD = 0.25 X VIN VHOT = 0.125 X VIN RHOT is the expected thermistor resistance at the programmed hot threshold, RCOLD is the expected thermistor resistance at the programmed cold threshold. If the value of R6 is less than 100kΩ, R3 must be added to protect the IC from 28V inputs.
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bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 www.ti.com APPLICATION INFORMATION bq2407xT CHARGER DESIGN EXAMPLE Refer to Typical Application Circuits for Schematics of the Design Example. Supply voltage = 5V Fast charge current of approximately 800 mA; ISET – pin 16 Input Current Limit =1.35A; ILIM – pin 12 Safety timer duration, Fast-Charge = 6.
PAGE 27
bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 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.
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bq24072T bq24075T, bq24079T SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 www.ti.com Half-Wave Adapters Some adapters implement a half rectifier topology, which causes the adapter output voltage to fall below the battery voltage during part of the cycle. To enable operation with adapters under those conditions, the bq2407xT family keeps the charger on for at least 20 msec (typical) after the input power puts the part in sleep mode. This feature enables use of external adapters using 50 Hz networks.
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bq24072T bq24075T, bq24079T www.ti.com SLUS937A – DECEMBER 2009 – REVISED APRIL 2010 REVISION HISTORY Note: Page numbers of current version may differ from previous versions. Changes from Original (December 2009) to Revision A Page • Added bq24072T device to data sheet header ..................................................................................................................... 1 • Added bq24072T feature bullet ............................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Feb-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing BQ24072TRGTR 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 BQ24072TRGTT QFN RGT 16 250 180.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 BQ24075TRGTR 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 5-Feb-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ24072TRGTR QFN RGT 16 3000 367.0 367.0 35.0 BQ24072TRGTT QFN RGT 16 250 210.0 185.0 35.0 BQ24075TRGTR QFN RGT 16 3000 367.0 367.0 35.0 BQ24075TRGTT QFN RGT 16 250 210.0 185.0 35.0 BQ24079TRGTR QFN RGT 16 3000 367.0 367.0 35.0 BQ24079TRGTT 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.