BQ24075RGTT
Standalone 1-Cell 1.5-A Linear Battery Chargers with Power PathThe BQ24075RGTT is a standalone 1-cell 1.5-a linear battery chargers with power path from Texas Instruments. View the full BQ24075RGTT datasheet below including electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
Battery ChargersOverview
Part: BQ24072, BQ24073, BQ24074, BQ24075, BQ24079 from Texas Instruments
Type: Standalone 1-Cell Linear Battery Charger with Power Path
Description: The BQ2407x series are integrated Li-Ion linear chargers and system power path management devices that support charge currents up to 1.5 A, operate from USB or AC adapters with 28-V input rating, and feature dynamic power path management.
Operating Conditions:
- Supply voltage: 4.25 V to 10 V (VIN)
- Operating temperature: -40 °C to +125 °C (TJ)
- Max charge current: Up to 1.5 A
- Selectable input current limit: 100 mA, 500 mA, or programmable up to 1.5 A
Absolute Maximum Ratings:
- Max supply voltage: 28 V (VIN)
- Max junction/storage temperature: -65 °C to +150 °C (TJ, TSTG)
Key Specs:
- Input voltage range: 4.25 V to 10 V
- Maximum charge current: Up to 1.5 A
- USB input current limit: 100 mA and 500 mA selectable
- Input overvoltage protection: 28 V rating
- Battery fast charge current range: 100 mA to 1.5 A
- Battery regulation voltage: 4.2 V (typical)
- Termination current (BQ24074): Programmable
- Quiescent current (Power Down): I BAT(PDWN) TYP value added in revision N.
Features:
- Fully compliant USB charger
- Selectable 100-mA and 500-mA maximum input current
- Input-based dynamic power management (VINDPM)
- 28-V Input rating with overvoltage protection
- Integrated dynamic power path management (DPPM)
- Supports up to 1.5-A charge current with current monitoring output (ISET)
- Programmable input current limit up to 1.5 A for wall adapters
- System output tracks battery voltage (BQ24072)
- Programmable termination current (BQ24074)
- Battery disconnect function with SYSOFF input (BQ24075, BQ24079)
- Programmable pre-charge and fast-charge safety timers
- Reverse current, short-circuit and thermal protection
- NTC thermistor input
- Proprietary start-up sequence limits inrush current
- Status indication - charging/done, power good
- Functional Safety-Capable (BQ24074)
- IEC 62368-1 Certification (BQ24072)
Applications:
- TWS Charging case and headphones
- Gaming accessory
- Video doorbells, IP network cameras
- Asset tracking and fleet management
- Portable medical devices
Package:
- VQFN (16) 3.00 mm × 3.00 mm
Features
- Fully compliant USB charger
- -Selectable 100-mA and 500-mA maximum input current
- -100-mA Maximum current limit ensures compliance to USB-IF standard
- -Input-based dynamic power management (VINDPM) for protection against poor USB sources
- Functional Safety-Capable (BQ24074)
- -Documentation available to aid functional safety system design
- 28-V Input rating with overvoltage protection
- Integrated dynamic power path management (DPPM) function simultaneously and independently powers the system and charges the battery
- Supports up to 1.5-A charge current with current monitoring output (ISET)
- Programmable input current limit up to 1.5 A for wall adapters
- System output tracks battery voltage (BQ24072)
- Programmable termination current (BQ24074)
- Battery disconnect function with SYSOFF input (BQ24075, BQ24079)
- Programmable pre-charge and fast-charge safety timers
- Reverse current, short-circuit and thermal protection
- NTC thermistor input
- Proprietary start-up sequence limits inrush current
- Status indication - charging/done, power good
- Safety-Related Certification:
- -IEC 62368-1 Certification (BQ24072)
Applications
- TWS Charging case and headphones
- Gaming accessory
- Video doorbells, IP network cameras
- Asset tracking and fleet management
- Portable medical devices
Pin Configuration
Figure 7-1. BQ24072, BQ24073 RGT0016B Package 16 Pins Top View
Figure 7-2. BQ24074 RGT0016B Package 16 Pins Top View
Figure 7-3. BQ24075 RGT0016C Package, BQ24079 RGT0016B Package 16 Pins Top View
Table 7-1. Pin Functions
| PIN | PIN | PIN | PIN | I/O | DESCRIPTION |
|---|---|---|---|---|---|
| NAME | '72, '73 | '74 | '75, '79 | I/O | DESCRIPTION |
| BAT | 2, 3 | 2, 3 | 2, 3 | I/O | Charger Power Stage Output and Battery Voltage Sense Input. Connect BAT to the positive terminal of the battery. Bypass BAT to VSS with a 4.7-μF to 47-μF ceramic capacitor. |
| CE | 4 | 4 | 4 | I | Charge Enable Active-Low Input. Connect CE to a high logic level to disable battery charging. OUT is active and battery supplement mode is still available. Connect CE to a low logic level to enable the battery charger. CE is internally pulled down with approximately 285 kΩ. Do not leave CE unconnected to ensure proper operation. |
| CHG | 9 | 9 | 9 | O | Open-Drain Charging Status Indication Output. CHG pulls to VSS when the battery is charging. CHG is high impedance when charging is complete and when charger is disabled. Connect CHG to the desired logic voltage rail using a 1kΩ-100kΩ resistor, or use with an LED for visual indication. |
| EN1 | 6 | 6 | 6 | I | Input Current Limit Configuration Inputs. Use EN1 and EN2 control the maximum input current and enable USB compliance. See Table 7-2 for the description of the operation states. EN1 and EN2 are internally pulled |
| EN2 | 5 | 5 | 5 | I | down with ≉ 285 kΩ. Do not leave EN1 or EN2 unconnected to ensure proper operation. |
| ILIM | 12 | 12 | 12 | I | Adjustable Current Limit Programming Input. Connect a 1100-Ω to 8-kΩ resistor from ILIM to VSS to program the maximum input current (EN2=1, EN1=0). The input current includes the system load and the battery charge current. Leaving ILIM unconnected disables all charging. |
| IN | 13 | 13 | 13 | I | Input Power Connection. Connect IN to the external DC supply (AC adapter or USB port). The input operating range is 4.35 V to 6.6 V (BQ24072, BQ24073, BQ24075, and BQ24079) or 4.35 V to 10.5 V (bq24074). The input can accept voltages up to 26 V without damage but operation is suspended. Connect bypass capacitor 1 μF to 10 μF to VSS. |
| ISET | 16 | 16 | 16 | I/O | Fast Charge Current Programming Input. Connect a 590-Ω to 8.9-kΩ resistor from ISET to VSS to program the fast charge current level. Charging is disabled if ISET is left unconnected. While charging, the voltage at ISET reflects the actual charging current and can be used to monitor charge current. See Section 9.3.5.1 for more details. |
| ITERM | - | 15 | - | I | Termination Current Programming Input. Connect a 0-Ω to 15-kΩ resistor from ITERM to VSS to program the termination current. Leave ITERM unconnected to set the termination current to the default 10% termination threshold. |
| OUT | 10, 11 | 10, 11 | 10, 11 | O | System Supply Output. OUT provides a regulated output when the input is below the OVP threshold and above the regulation voltage. When the input is out of the operation range, OUT is connected to V BAT except when SYSOFF is high (BQ24075 and BQ24079 only). Connect OUT to the system load. Bypass OUT to VSS with a 4.7-μF to 47-μF ceramic capacitor. |
| PGOOD | 7 | 7 | 7 | O | Open-drain Power Good Status Indication Output. PGOOD pulls to VSS when a valid input source is detected. PGOOD is high-impedance when the input power is not within specified limits. Connect PGOOD to the desired logic voltage rail using a 1-kΩ to 100-kΩ resistor, or use with an LED for visual indication. |
| SYSOFF | - | - | 15 | I | System Enable Input. Connect SYSOFF high to turn off the FET connecting the battery to the system output. When an adapter is connected, charging is also disabled. Connect SYSOFF low for normal operation. SYSOFF is internally pulled up to V BAT through a large resistor (approximately 5 MΩ). Do not leave SYSOFF unconnected to ensure proper operation. |
Table 7-1. Pin Functions
Electrical Characteristics
Over junction temperature range (0° ≤ TJ ≤ 125°C) and the recommended supply voltage range (unless otherwise noted)
| PARAMETER | TEST | CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|---|
| INPUT | |||||||
| UVLO | Undervoltage lock-out | V IN :0V→4V | V IN :0V→4V | 3.2 | 3.3 | 3.4 | V |
| V hys | Hysteresis on UVLO | V IN :4V→0V | V IN :4V→0V | 200 | 300 | mV | |
| V IN(DT) | Input power detection threshold | Input power detected when V IN > V BAT + V IN(DT) V BAT = 3.6 V, VIN: 3.5V→4V | Input power detected when V IN > V BAT + V IN(DT) V BAT = 3.6 V, VIN: 3.5V→4V | 55 | 80 | 130 | mV |
| V hys | Hysteresis on V IN(DT) | V BAT = 3.6 V, V IN : 4 V →3.5 V | V BAT = 3.6 V, V IN : 4 V →3.5 V | 20 | mV | ||
| t DGL(PGOOD) | Deglitch time, input power detected status | Time measured from V IN : 0 V →5V1μs rise-time to PGOOD = LO | Time measured from V IN : 0 V →5V1μs rise-time to PGOOD = LO | 1.2 | ms | ||
| V | V IN :5V→7V | ('72, '73, '75, '79) | 6.4 | 6.6 | 6.8 | V | |
| OVP | Input overvoltage protection threshold | V IN : 5 V →11 V | ('74) | 10.2 | 10.5 | 10.8 | |
| V hys | Hysteresis on OVP | V IN : 7 V →5V V IN : 11V→5V | ('72, '73, '75, '79) ('74) | 110 175 | mV | ||
| t DGL(OVP) | Input overvoltage blanking time (OVP fault deglitch) | 50 | μs | ||||
| t REC | Input overvoltage recovery time | Time measured from V IN : 11 V →5Vwith 1 μs fall-time to PGOOD = LO | Time measured from V IN : 11 V →5Vwith 1 μs fall-time to PGOOD = LO | 1.2 | ms | ||
| ILIM, ISET SHORT-CIRCUIT DETECTION (CHECKED DURING | ILIM, ISET SHORT-CIRCUIT DETECTION (CHECKED DURING | STARTUP) | |||||
| I SC | Current source | V IN > UVLO and V IN > V BAT + V IN(DT) | V IN > UVLO and V IN > V BAT + V IN(DT) | 1.3 | mA | ||
| V SC | V IN > UVLO and V IN > V BAT + V IN(DT) | V IN > UVLO and V IN > V BAT + V IN(DT) | 520 | mV | |||
| QUIESCENT | CURRENT | ||||||
| I BAT(PDWN) | Sleep current into BAT pin | CE = LO or HI, input power not detected, No load on OUT pin, T J = 85°C | CE = LO or HI, input power not detected, No load on OUT pin, T J = 85°C | 4.3 | 6.5 | μA | |
| I | Standby current into IN pin | EN1= HI, EN2=HI, V IN = 6 V, T J = 85°C | EN1= HI, EN2=HI, V IN = 6 V, T J = 85°C | 41.3 | 50 | μA | |
| IN | EN1= HI, EN2=HI, V IN = 10 V, T J = 85°C | EN1= HI, EN2=HI, V IN = 10 V, T J = 85°C | 99.8 | 200 | |||
| I CC | Active supply current, IN pin | CE = LO, V IN = 6 V, no load on OUT pin, V BAT > V BAT(REG) , (EN1, EN2) ≠ (HI, HI) | CE = LO, V IN = 6 V, no load on OUT pin, V BAT > V BAT(REG) , (EN1, EN2) ≠ (HI, HI) | 1.1 | 1.5 | mA | |
| POWER PATH | POWER PATH | ||||||
| V DO(IN-OUT) | V IN - V OUT | V IN = 4.3 V, I IN = 1 A, V BAT = 4.2 V | V IN = 4.3 V, I IN = 1 A, V BAT = 4.2 V | 300 | 475 | mV | |
| V DO(BAT-OUT) | V BAT - V OUT | I OUT = 1 A, V IN = 0 V, V BAT > 3 V | I OUT = 1 A, V IN = 0 V, V BAT > 3 V | 50 | 100 | mV | |
| V IN > V OUT + V DO(IN-OUT) , V BAT < 3.2 V | V IN > V OUT + V DO(IN-OUT) , V BAT < 3.2 V | 3.3 | 3.4 | 3.5 | |||
| V O(REG) | OUT pin voltage regulation (BQ24072) | V IN > V OUT + V DO(IN-OUT) , V BAT ≥ 3.2 V | V IN > V OUT + V DO(IN-OUT) , V BAT ≥ 3.2 V | V BAT + 150mV | V BAT + 225mV | V BAT + 270mV | V |
| OUT pin voltage regulation (BQ24073, BQ24074) | V IN > V OUT + V DO(IN-OUT) | V IN > V OUT + V DO(IN-OUT) | 4.3 | 4.4 | 4.5 | ||
| OUT pin voltage regulation (BQ24075, BQ24079) | V IN > V OUT + V DO(IN-OUT) | V IN > V OUT + V DO(IN-OUT) | 5.4 | 5.5 | 5.6 | ||
| EN1 = LO, EN2 = LO | EN1 = LO, EN2 = LO | 90 | 95 | 100 | |||
| I IN max | Maximum input current | EN1 = HI, EN2 = LO | EN1 = HI, EN2 = LO | 450 | 475 | 500 | mA |
| EN2 = HI, EN1 = LO | EN2 = HI, EN1 = LO | K | ILIM /R ILIM | A | |||
| K | Maximum input current factor | I LIM = 500 mA to 1.5 A | I LIM = 500 mA to 1.5 A | 1500 | 1610 | 1720 | AΩ |
| ILIM | I LIM = 200 mA to 500 mA | I LIM = 200 mA to 500 mA | 1330 | 1525 | 1720 | ||
| I IN max | Programmable input current limit range | EN2 = HI, EN1 = LO, R ILIM = 8 kΩ to 1.1 kΩ | EN2 = HI, EN1 = LO, R ILIM = 8 kΩ to 1.1 kΩ | 200 | 1500 | mA | |
| V IN-DPM | Input voltage threshold when input current is reduced | EN2 = LO, EN1 = X | EN2 = LO, EN1 = X | 4.35 | 4.5 | 4.63 | V |
| V DPPM | Output voltage threshold when charging current is | ('72, '73, '74) | V O(REG) - 180mV | V O(REG) - 100mV | O(REG) - 30mV | V | |
| reduced | ('75, '79) | 4.2 | 4.3 | 4.4 | V | ||
| V BSUP1 | Enter battery supplement mode | V BAT = 3.6 V, R ILIM = 1.5 kΩ, R LOAD =10Ω→2Ω | V BAT = 3.6 V, R ILIM = 1.5 kΩ, R LOAD =10Ω→2Ω | OUT ≤ V BAT - 40mV | OUT ≤ V BAT - 40mV | V | |
| V BSUP2 | Exit battery supplement mode | V BAT = 3.6 V, R ILIM = 1.5 kΩ, R LOAD = 2 Ω →10 Ω | V BAT = 3.6 V, R ILIM = 1.5 kΩ, R LOAD = 2 Ω →10 Ω | V OUT ≥ V BAT - 20mV | V OUT ≥ V BAT - 20mV | V | |
| V O(SC1) | Output short-circuit detection threshold, power-on | V IN > V UVLO and V IN > V BAT + V IN(DT) | V IN > V UVLO and V IN > V BAT + V IN(DT) | 0.8 | 0.9 | 1 | V |
| V O(SC2) | Output short-circuit detection threshold, supplement mode V BAT - V OUT > V O(SC2) indicates short-circuit | V IN > V UVLO and V IN > V BAT + V IN(DT) | V IN > V UVLO and V IN > V BAT + V IN(DT) | 200 | 250 | 300 | mV |
| t DGL(SC2) | Deglitch time, supplement mode short circuit | 250 | μs | ||||
| t REC(SC2) | Recovery time, supplement mode short | circuit | circuit | 60 | ms |
Absolute Maximum Ratings
over the 0°C to 125°C operating free-air temperature range (unless otherwise noted)
| MIN MAX | UNIT | |||
|---|---|---|---|---|
| V I | IN (with respect to VSS) -0.3 | 28 | V | |
| V I | Input Voltage | BAT (with respect to VSS) | -0.3 5 | V |
| V I | OUT, EN1, EN2, CE, TS, ISET, PGOOD, CHG, ILIM, TMR, ITERM, SYSOFF, TD (with respect to VSS) | -0.3 7 | V | |
| I I | Input Current | IN | 1.6 | A |
| I O | Output Current (Continuous) | OUT | 5 | A |
| BAT (Discharge mode) | 5 | A | ||
| BAT (Charging mode) | 1.5 (2) | A | ||
| Output Sink Current | CHG, PGOOD | 15 | mA | |
| T J | Junction temperature | Junction temperature | -40 150 | °C |
| T stg | Storage temperature | Storage temperature | -65 150 | °C |
Recommended Operating Conditions
| MIN | MAX | UNIT | |||
|---|---|---|---|---|---|
| IN voltage range | IN voltage range | 4.35 | 26 | V | |
| V I | '72, '73, '75, '79 | 4.35 | 6.4 | V | |
| V I | '74 | 4.35 | 10.2 | V | |
| I IN | Input current, IN pin | Input current, IN pin | 1.5 | A | |
| I OUT | Current, OUT pin | Current, OUT pin | 4.5 | A | |
| I BAT | Current, BAT pin (Discharging) | Current, BAT pin (Discharging) | 4.5 | A | |
| I CHG | Current, BAT pin (Charging) | Current, BAT pin (Charging) | 1.5 (2) | A | |
| T J | Junction Temperature | Junction Temperature | -40 | 125 | °C |
| R ILIM | Maximum input current programming resistor | Maximum input current programming resistor | 1100 | 8000 | Ω |
| R ISET | Fast-charge current programming resistor (1) | Fast-charge current programming resistor (1) | 590 | 8900 | Ω |
| R ITERM | Termination current programming resistor | Termination current programming resistor | 0 | 15 | kΩ |
| R TMR | Timer programming resistor | Timer programming resistor | 18 | 72 | kΩ |
Thermal Information
| THERMAL METRIC (1) | BQ2407x RGT | UNIT | |
|---|---|---|---|
| 16 PINS | |||
| R θJA | Junction-to-ambient thermal resistance | 44.5 | °C/W |
| R θJC(top) | Junction-to-case (top) thermal resistance | 54.2 | °C/W |
| R θJB | Junction-to-board thermal resistance | 17.2 | °C/W |
| ψ JT | Junction-to-top characterization parameter | 1.0 | °C/W |
| ψ JB | Junction-to-board characterization parameter | 17.1 | °C/W |
| R θJC(bot) | Junction-to-case (bottom) thermal resistance | 3.8 | °C/W |
Typical Application
The BQ2407x devices power the system while simultaneously and independently charging the battery. The input power source for charging the battery and running the system can be an AC adapter or a USB port. The devices feature dynamic power-path management (DPPM), which shares the source current between the system and battery charging and automatically reduces the charging current if the system load increases. When charging from a USB port, the input dynamic power management (VIN-DPM) circuit reduces the input current limit if the input voltage falls below a threshold, preventing the USB port from crashing. The power-path architecture also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents.
The BQ2407x is configurable to be host controlled for selecting different input current limits based on the input source connected, or a fully stand alone device for applications that do not support multiple types of input sources.
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| BQ24075 | Texas Instruments | — |
| BQ24075-Q1 | Texas Instruments | — |
| BQ24075RGTR | Texas Instruments | — |
| BQ24075RGTR.A | Texas Instruments | — |
| BQ24075RGTR.B | Texas Instruments | — |
| BQ24075RGTRG4 | Texas Instruments | — |
| BQ24075RGTT.A | Texas Instruments | — |
| BQ24075RGTT.B | Texas Instruments | — |
| BQ24075T | Texas Instruments | — |
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