BQ24081QDRCRQ1

Order Now Product Folder Support & Community Tools & Software Technical Documents bq24080-Q1, bq24081-Q1 SLUSCB6B – MAY 2015 – REVISED JUNE 2017 bq2408x-Q1 1-A, Single Chip, Li-Ion and Li-Pol Automotive Charger 1 Features 3 Description • The bq24080-Q1 and bq24081-Q1 are highly integrated and flexible Li-Ion linear charge devices targeted at space-limited charger applications. They offer an integrated power FET and current sensor, high-accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device. An external resistor sets the magnitude of the charge current. 1 • • • • • • • Integrated Power FET and Current Sensor for Up to 1-A Charge Applications From AC Adapter Precharge Conditioning With Safety Timer Charge and Power-Good Status Output Automatic Sleep Mode for Low Power Consumption Integrated Charge-Current Monitor Fixed 7-Hour Fast Charge Safety Timer Ideal for Low-Dropout Charger Designs for Single-Cell Li-Ion or Li-Pol Packs in Space-Limited Portable Applications Small 3-mm × 3-mm SON Package The device charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety for charge termination. The device automatically restarts the charge if the battery voltage falls below an internal threshold. The device automatically enters sleep mode when the ac adapter is removed. 2 Applications • • • • Linear Chargers for Automotive E-Call/ Back Up Call battery Automotive Infotainment Key FOB in Automotive Device Information(1) PART NUMBER bq24080-Q1(2) bq24081-Q1 PACKAGE VSON (10) BODY SIZE (NOM) 3.00 mm x 3.00 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. (2) Product Preview Simplified Schematic AC Adapter VDC GND C1 0.1 mF PACK+ bq24080-Q1 1 IN C2 0.1 µF OUT 10 PACK– 2 NC CE 9 3 STAT1 PG 8 4 STAT2 VBSEL 7 5 VSS Battery Pack + System System Interface RSET ISET 6 1.13 kW Copyright © 2016, Texas Instruments Incorporated 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA. bq24080-Q1, bq24081-Q1 SLUSCB6B – MAY 2015 – REVISED JUNE 2017 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 4 6.1 6.2 6.3 6.4 6.5 6.6 6.7 4 4 4 4 5 6 7 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... Timing Requirements ................................................ Typical Characteristics .............................................. Detailed Description .............................................. 8 7.1 7.2 7.3 7.4 Overview ................................................................... 8 Functional Block Diagram ....................................... 10 Feature Description................................................. 11 Device Functional Modes........................................ 14 8 Application and Implementation ........................ 15 8.1 Application Information............................................ 15 8.2 Typical Application ................................................. 15 9 Power Supply Recommendations...................... 17 10 Layout................................................................... 18 10.1 Layout Guidelines ................................................. 18 10.2 Layout Example .................................................... 18 10.3 Thermal Considerations ........................................ 19 11 Device and Documentation Support ................. 20 11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 Device Support...................................................... Documentation Support ........................................ Related Links ........................................................ Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 20 20 20 20 20 20 20 20 12 Mechanical, Packaging, and Orderable Information ........................................................... 20 4 Revision History Changes from Revision A (August 2016) to Revision B • Page Changed the RθJC(top) value From: 5034 °C/W To: 50.4 °C/W in the Thermal Information table ........................................... 4 Changes from Original (May 2016) to Revision A Page • Recommended Operating Conditions, Changed The TJ MIN value From: 0 To: –40°C........................................................ 4 • Electrical Characteristics, Changed the conditions statement From: 0°C ≤ TJ ≤ 125°C To: –40°C ≤ TJ ≤ 125°C ................ 5 2 Submit Documentation Feedback Copyright © 2015–2017, Texas Instruments Incorporated Product Folder Links: bq24080-Q1 bq24081-Q1 bq24080-Q1, bq24081-Q1 www.ti.com SLUSCB6B – MAY 2015 – REVISED JUNE 2017 5 Pin Configuration and Functions bq24080-Q1 DRC Package 10 Pin VSON Top View VSS 5 STAT2 STAT1 GND IN 3 1 VSS 4 6 bq24081-Q1 DRC Package 10 Pin VSON Top View 7 ISET GND 2 8 9 10 PG CE OUT STAT2 STAT1 GND IN 5 4 3 2 1 6 7 8 9 10 TE TS OUT ISET GND Pin Functions PIN NAME CE NO. bq24080-Q1 I/O DESCRIPTION bq24081-Q1 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. ISET 6 6 I Charge current. External resistor to VSS sets precharge and fast-charge current, and also the termination current value. Can be used to monitor the charge current. OUT 10 10 O Charge current output. Connect minimum 0.1-μF capacitor to VSS. PG 8 – O Power-good status output (open-drain) STAT1 3 3 O STAT2 4 4 O TE – 8 I TS – 9 I/O VSS 5 5 – Ground Thermal pad – – – There is an internal electrical connection between the exposed thermal pad and the VSS pin of the device. The exposed thermal pad must be connected to the same potential as the VSS pin on the printed-circuit board. Do not use the thermal pad as the primary ground input for the device. The VSS pin must be connected to ground at all times. GND Charge status outputs (open-drain) Timer-enable input (active-low) Temperature sense; connect to NTC in battery pack. Copyright © 2015–2017, Texas Instruments Incorporated Product Folder Links: bq24080-Q1 bq24081-Q1 Submit Documentation Feedback 3 bq24080-Q1, bq24081-Q1 SLUSCB6B – MAY 2015 – REVISED JUNE 2017 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) bq24080-Q1, bq24081-Q1 MIN UNIT MAX Input voltage (2) IN, CE, ISET, OUT, PG, STAT1, STAT2, TE, TS 7 V Output sink/source current STAT1, STAT2, PG 15 mA Output current OUT 1.5 A –0.3 Operating free-air temperature range, TA Junction temperature range, TJ Storage temperature, Tstg (1) (2) –40 125 –65 150 °C °C °C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltages are with respect to VSS. 6.2 ESD Ratings VALUE V(ESD) (1) Human-body model (HBM), per AEC Q100-002 Electrostatic discharge (1) UNIT ±2000 Charged-device model (CDM), per AEC Q100-011 V ±500 AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification. 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) MIN MAX VCC Supply voltage 4.5 6.5 UNIT V TJ Operating junction temperature range –40 125 °C 6.4 Thermal Information bq24080-Q1, bq24081-Q1 THERMAL METRIC (1) UNIT DRC (10 PINS) RθJA Junction-to-ambient thermal resistance 44.3 °C/W RθJC(top) Junction-to-case (top) thermal resistance 50.4 °C/W RθJB Junction-to-board thermal resistance 19.7 °C/W ψJT Junction-to-top characterization parameter 0.7 °C/W ψJB Junction-to-board characterization parameter 19.9 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance 4.5 °C/W (1) 4 For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. Submit Documentation Feedback Copyright © 2015–2017, Texas Instruments Incorporated Product Folder Links: bq24080-Q1 bq24081-Q1 bq24080-Q1, bq24081-Q1 www.ti.com SLUSCB6B – MAY 2015 – REVISED JUNE 2017 6.5 Electrical Characteristics over –40°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX 1.2 2 2 5 UNIT INPUT CURRENT ICC(VCC) VCC current VCC > VCC(min) ICC(SLP) Sleep current Sum of currents into OUT pin, VCC < V(SLP) ICC(STBY) Standby current CE = High, 0°C ≤ TJ ≤ 85°C IIB(OUT) Input current on OUT pin Charge DONE, VCC > VCC(MIN) 150 1 mA μA 5 VOLTAGE REGULATION VO(REG) + V(DO−MAX) ≤ VCC, I(TERM) < IO(OUT) ≤ 1 A VO(REG) Output voltage 4.2 TA = 25°C Voltage regulation accuracy V(DO) 0.35% −1% 1% VO(OUT) = VO(REG), IO(OUT) = 1 A VO(REG) + V(DO)) ≤ VCC Dropout voltage (V(IN) − V(OUT)) V −0.35% 350 500 mV 1000 mA V CURRENT REGULATION IO(OUT) Output current range (1) VI(OUT) > V(LOWV), VI(IN) − VI(OUT) > V(DO), VCC ≥ 4.5 V V(SET) Output current set voltage Voltage on ISET pin, VCC ≥ 4.5 V, VI ≥ 4.5 V, VI(OUT) > V(LOWV), VI − VI(OUT) > V(DO) K(SET) Output current set factor 20 2.463 2.5 2.538 50 mA ≤ IO(OUT) ≤ 1 A 307 322 337 10 mA ≤ IO(OUT) < 50 mA 296 320 346 1 mA ≤ IO(OUT) < 10 mA 246 320 416 2.8 3 3.2 V 100 mA 270 mV 100 mA mV PRECHARGE AND SHORT-CIRCUIT CURRENT REGULATION V(LOWV) Precharge to fast-charge transition threshold Voltage on OUT pin IO(PRECHG) Precharge range (2) 0 V < VI(OUT) < V(LOWV), t < t(PRECHG) 2 Precharge set voltage Voltage on ISET pin, VO(REG) = 4.2 V, 0 V < VI(OUT) > V(LOWV), t < t(PRECHG) 240 V(PRECHG) 255 TERMINATION DETECTION I(TERM) Charge termination detection range (3) VI(OUT) > V(RCH), t < t(TRMDET) 2 V(TERM) Charge termination detection set voltage Voltage on ISET pin, VO(REG) = 4.2 V, VI(OUT) > V(RCH), t < t(TRMDET) 235 250 265 VO(REG) – 0.115 VO(REG) − 0.10 VO(REG) − 0.085 V 0.25 V BATTERY RECHARGE THRESHOLD V(RCH) Recharge threshold STAT1, STAT2, and PG OUTPUTS VOL Low-level output saturation voltage IO = 5 mA CE and TE INPUTS VIL Low-level input voltage 0 VIH High-level input voltage 1.4 IIL Low-level input current –1 IIH High-level input current 0.4 1 V μA TIMERS I(FAULT) (1) (2) (3) Timer fault recovery current 200 μA See Equation 2. See Equation 1. See Equation 4. Copyright © 2015–2017, Texas Instruments Incorporated Product Folder Links: bq24080-Q1 bq24081-Q1 Submit Documentation Feedback 5 bq24080-Q1, bq24081-Q1 SLUSCB6B – MAY 2015 – REVISED JUNE 2017 www.ti.com Electrical Characteristics (continued) over –40°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SLEEP COMPARATOR V(SLP) Sleep-mode entry threshold voltage V(SLPEXIT) Sleep-mode exit threshold voltage 2.3 V ≤ VI(OUT) ≤ VO(REG) VCC ≤ VI(OUT) + 80 mV VCC ≥ VI(OUT) + 190 V THERMAL SHUTDOWN THRESHOLDS T(SHTDWN) Thermal trip threshold 165 TJ increasing Thermal hysteresis °C 15 UNDERVOLTAGE LOCKOUT Undervoltage lockout UVLO Decreasing VCC 2.4 Hysteresis 2.5 2.6 27 V mV TEMPERATURE SENSE COMPARATOR (bq24081-Q1) V(TS1) High-voltage threshold 2.475 2.5 2.525 V(TS2) Low-voltage threshold 0.485 0.5 0.515 I(TS) TS pin current source 96 102 108 V μA 6.6 Timing Requirements MIN NOM MAX UNIT VCC(MIN) ≥ 4.5 V, tFALL = 100 ns, 10-mV overdrive, VI(OUT) decreasing below threshold 250 375 500 ms VCC(MIN) ≥ 4.5 V, tFALL = 100 ns charging current decreasing below 10-mV overdrive 250 375 500 ms VCC(MIN) ≥ 4.5 V, tFALL = 100 ns decreasing below or increasing above threshold, 10-mV overdrive 250 375 500 ms PRECHARGE AND SHORT-CIRCUIT CURRENT REGULATION Deglitch time for fast-charge to precharge transition TERMINATION DETECTION tTRMDET Deglitch time for termination detection BATTERY RECHARGE THRESHOLD t(DEGL) Deglitch time for recharge detect TIMERS t(PRECHG) Precharge time t(CHG) Charge time 1,584 1,800 2,016 s 22,176 25,200 28,224 s 250 375 500 ms 250 375 500 ms SLEEP COMPARATOR V(IN) decreasing below threshold, tFALL = 100 ns, 10-mV overdrive Sleep-mode entry deglitch time TEMPERATURE SENSE COMPARATOR (bq24081-Q1) t(DEGL) 6 Deglitch time for temperature fault Submit Documentation Feedback Copyright © 2015–2017, Texas Instruments Incorporated Product Folder Links: bq24080-Q1 bq24081-Q1 bq24080-Q1, bq24081-Q1 www.ti.com SLUSCB6B – MAY 2015 – REVISED JUNE 2017 6.7 Typical Characteristics 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. Dropout Voltage vs Junction Temperature Figure 2. VIN Hot-Plug Power-Up Sequence Figure 3. Charge Enable Power-Up Sequence (CE = High-to-Low) Figure 4. Battery Hot-Plug During Charging Phase No battery – In termination deglitch prior to STAT1 going high. VOUT (VBAT) cycling between charge and done prior to screen capture Stat1 goes high – In done state 2-V battery is inserted during the charge done state. Charging is initiated – STAT1 goes low and charge current is applied. Battery is removed – VOUT goes into regulation, IOUT goes to zero, and termination deglitch timer starts running (same as state 1). Deglitch timer expires – charge done is declared. Figure 5. Battery Hot-Plug and Removal Power Sequence Copyright © 2015–2017, Texas Instruments Incorporated Product Folder Links: bq24080-Q1 bq24081-Q1 Submit Documentation Feedback 7 bq24080-Q1, bq24081-Q1 SLUSCB6B – MAY 2015 – REVISED JUNE 2017 www.ti.com 7 Detailed Description 7.1 Overview 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. Preconditioning Phase Current Regulation Phase Voltage Regulation and Charge Termination Phase Regulation Voltage Regulation Current Minimum Charge Voltage PreConditioning and Term Detect Charge Voltage Charge Complete Charge Current Safety Timer M0066-01 Figure 6. Typical Charging Profile 8 Submit Documentation Feedback Copyright © 2015–2017, Texas Instruments Incorporated Product Folder Links: bq24080-Q1 bq24081-Q1 bq24080-Q1, bq24081-Q1 www.ti.com SLUSCB6B – MAY 2015 – REVISED JUNE 2017 Overview (continued) POR SLEEP MODE VCC > VI(OUT) checked at all times? No Indicate SLEEP MODE Yes VI(OUT)