BQ24295RGER
Battery Charger and Boost ConverterThe BQ24295RGER is a battery charger and boost converter from Texas Instruments. View the full BQ24295RGER datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Official BQ24295RGER datasheet (PDF) — the source this page was extracted from.
BQ24295RGER Key Specifications
| Parameter | Value |
|---|---|
| Packaging | MouseReel |
| Standard Pack Qty | 3000 |
| Charge Efficiency | 90% |
| Package Dimensions | 4.00mm x 4.00mm |
| Input Voltage Range | 3.9V to 6.2V |
| Switching Frequency | 1.5MHz |
| Battery Voltage (Max) | 4.4V |
| Boost Mode Efficiency | 90% at 5.1V |
| Communication Interface | I2C |
| Thermal Resistance RθJA | 32.2°C/W |
| Boost Mode Output Current | 1.5A |
| Boost Mode Output Voltage | 4.55V to 5.5V adjustable |
| Fast Charge Current (Max) | 3A |
| Input Current Limit Options | 100mA, 150mA, 500mA, 900mA, 1A, 1.5A, 2A, 3A |
| Operating Temperature Range | -40°C to 85°C |
| System Output Current (Max) | 3.5A |
| Input Overvoltage Protection | 6.4V |
| Boost Output Voltage Accuracy | ±3% |
| Input Current Regulation Accuracy | ±7.5% |
| Charge Current Regulation Accuracy | ±7% |
| Charge Voltage Regulation Accuracy | ±0.5% |
| Battery Leakage Current In Ship Mode | 20μA |
| Battery Discharge Current With Internal MOSFET (Max) | 5.5A |
BQ24295RGER Overview
Part: bq24295 (BQ24295RGER) — Texas Instruments
Type: I2C-Controlled Single-Cell USB Li-Ion Battery Charger with Narrow VDC Power Path and Synchronous Boost
Description: 3.9–6.2 V input, 3 A single-cell switch-mode battery charger with NVDC power path management, 1.5 MHz switching, and an adjustable 4.55–5.5 V boost output at 1.5 A (90% efficiency).
Operating Conditions:
- Input voltage (VIN): 3.9–6.2 V
- Operating free-air temperature: -40 to 85 °C
- Input current (VBUS): up to 3 A; output current (SYS): up to 3.5 A
- Fast charging current: up to 3 A; battery voltage: up to 4.4 V
Absolute Maximum Ratings:
- Max junction temperature: 150 °C
- Storage temperature: -65 to 150 °C
- Output sink current (INT, STAT): 6 mA
Key Specs:
- Input voltage range: 3.9–6.2 V, with 6.4 V over-voltage protection
- Input current limit options: 100 mA, 150 mA, 500 mA, 900 mA, 1 A, 1.5 A, 2 A, 3 A
- Charge voltage regulation accuracy: ±0.5%
- Charge current regulation accuracy: ±7%
- Input current regulation accuracy: ±7.5%
- Boost mode output: 4.55–5.5 V at 1.5 A, ±3% regulation, 90% efficiency at 5.1 V
- Switching frequency: 1.5 MHz
- Low battery leakage current: 20 μA, with shipping mode support
- Fast OTG startup: 22 ms typical
Features:
- 90% efficient switch-mode 3 A charger
- USB D+/D- detection compatible with BC1.2, plus non-standard 2 A/1 A adapter detection
- Narrow VDC power path with instant system on and ideal diode operation in battery supplement mode
- Synchronous boost converter for battery boost (OTG) mode
- I2C port for configuration and status reporting; autonomous charging with or without host
- Battery charge preconditioning, termination, recharge, and safety timer
- Battery temperature sensing (TS) for charging and boost-mode discharging
- Thermal regulation and shutdown, input and system over-voltage protection, MOSFET over-current protection
- Integrated MOSFETs, current sensing, bootstrap diode, and internal loop compensation
- Input voltage regulation for maximum power tracking
- Charge status outputs for LED or host processor
Applications:
- Power bank for smartphone and tablet
- Portable media players
- Internet devices
Package:
- VQFN-24, 4.00 mm x 4.00 mm
BQ24295RGER Features
- 90% High Efficiency Switch Mode 3-A Charger
- 3.9-V to 6.2-V Single Input USB-Compliant Charger with 6.4-V Over-Voltage Protection
- -USB Host or Charging Port D+/D- Detection Compatible to USB Battery Charger Spec (BC1.2)
- -Support Non-Standard 2-A/1-A Adapters Detection
- -Input Voltage and Current Limit Supports USB2.0 and USB 3.0
- -Input Current Limit: 100 mA, 150 mA, 500 mA, 900 mA, 1 A, 1.5 A, 2 A, and 3 A
- Synchronous Boost Converter in Battery Boost Mode with
- -Adjustable Output 4.55 V - 5.5 V at 1.5 A
- -90% 5.1-V Boost Mode Efficiency
- -Fast OTG Startup (22 ms Typ)
- Narrow VDC (NVDC) Power Path Management
- -Instant System On with No Battery or Deeply Discharged Battery
- -Ideal Diode Operation in Battery Supplement Mode
- 1.5-MHz Switching Frequency for Low Profile 1.2mm Inductor
- I 2 C Port for Optimal System Performance and Status Reporting
- Autonomous Battery Charging with or without Host Management
- -Battery Charge Enable
- -Battery Charge Preconditioning
- -Charge Termination and Recharge
- High Accuracy
- -±0.5% Charge Voltage Regulation
- -±7% Charge Current Regulation
- -±7.5% Input Current Regulation
- -±3% Output Voltage Regulation in Boost Mode
- High Integration
- -Power Path Management
- -Synchronous Switching MOSFETs
- -Integrated Current Sensing
- -Bootstrap Diode
- -Internal Loop Compensation
1
bq24295
SLUSBC1B -SEPTEMBER 2013-REVISED DECEMBER 2016
BQ24295RGER Applications
- Power Bank for Smartphone, Tablet
- Portable Media Players
- Internet Devices
BQ24295RGER Pin Configuration
RGE Package 24-Pin VQFN With Exposed Thermal Pad (Top View)
Pin Functions
| PIN - NAME | PIN - NUMBER | TYPE | DESCRIPTION |
|---|---|---|---|
| VBUS | 1,24 | P | Charger Input Voltage. The internal n-channel reverse block MOSFET (RBFET) is connected between VBUS and PMID with VBUS on source. Place a 1-μF ceramic capacitor from VBUS to PGND and place it as close as possible to IC. |
| D+ | 2 | I Analog | Positive line of the USB data line pair. D+/D- based USB host/charging port detection. The detection includes data contact detection (DCD) and primary detection in bc1.2. |
| D- | 3 | I Analog | Negative line of the USB data line pair. D+/D- based USB host/charging port detection. The detection includes data contact detection (DCD) and primary detection in bc1.2. |
| STAT | 4 | O | Open drain charge status output to indicate various charger operation. Connect to the pull up rail via 10-k Ω resistor. LOW indicates charge in progress. HIGH indicates charge complete or charge disabled. When any fault condition occurs, STAT pin in the charge blinks at 1 Hz. |
| SCL | 5 | I | I 2 C Interface clock. Connect SCL to the logic rail through a 10-k Ω resistor. |
| SDA | 6 | I/O | I 2 C Interface data. Connect SDA to the logic rail through a 10-k Ω resistor. |
| INT | 7 | O | Open-drain Interrupt Output. Connect the INT to a logic rail via 10k Ω resistor. The INT pin sends active low, 256-μs pulse to host to report charger device status and fault. |
| OTG | 8 | I Digital | OTG Enable pin. The boost mode is activated when the OTG pin is High, REG01[5] = 1, and no Input source is detected at VBUS. |
| CE | 9 | I | Active low Charge Enable pin. Battery charging is enabled when REG01[5:4] = 01 and CE pin = Low. CE pin must be pulled high or low. |
| ILIM | 10 | I | ILIM pin sets the maximum input current limit by regulating the ILIM voltage at 1 V. A resistor is connected from ILIM pin to ground to set the maximum limit as I INMAX = (1V/R ILIM ) × K ILIM . The actual input current limit is the lower one set by ILIM and by I 2 C REG00[2:0]. The minimum input current programmed on ILIM pin is 500 mA. |
| TS | 11 | I Analog | Temperature qualification voltage input. Connect a negative temperature coefficient thermistor. Program temperature window with a resistor divider from REGN to TS to GND. Charge suspends or Boost disable when TS pin is out of range. A 103AT-2 thermistor is recommended. |
| QON | 12 | I | BATFET enable control in shipping mode. A logic low to high transition on this pin with minimum 2ms high level turns on BATFET to exit shipping mode. It has internal 1M Ω (Typ) pull down. For backward compatibility, when BATFET enable control function is not used, the pin can be a no connect or tied to TS pin (10k NTC thermistor only). (Refer to Shipping Mode for detail description). |
| BAT | 13,14 | P | Battery connection point to the positive pin of the battery pack. The internal BATFET is connected between BAT and SYS. Connect a 10 μF closely to the BAT pin. |
Pin Functions
BQ24295RGER Electrical Characteristics
VVBUS_UVLOZ < VVBUS < VACOV and VVBUS > VBAT + VSLEEP, TJ = -40°C to 125°C and TJ = 25°C for typical values (unless otherwise noted)
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| QUIESCENT CURRENTS | QUIESCENT CURRENTS | QUIESCENT CURRENTS | QUIESCENT CURRENTS | QUIESCENT CURRENTS | QUIESCENT CURRENTS | QUIESCENT CURRENTS |
| I BAT | Battery discharge current (BAT, SW, SYS) | V VBUS < V UVLO , VBAT = 4.2 V, leakage between BAT and VBUS | 5 | μA | ||
| High-Z Mode, or no VBUS, BATFET disabled (REG07[5] = 1), -40°C - 85°C | 16 | 20 | μA | |||
| High-Z Mode, or no VBUS, BATFET enabled (REG07[5] = 0), -40°C - 85°C | 32 | 55 | μA | |||
| I VBUS | Input supply current (VBUS) | V VBUS = 5 V, High-Z mode, No battery | 15 | 30 | μA | |
| V VBUS > V UVLO , V VBUS > V BAT , converter not switching V VBUS > V UVLO , V VBUS > V BAT , converter switching, V BAT = 3.2 V, I SYS = 0 A V VBUS > V UVLO , V VBUS > V BAT , converter switching, charge disable, V BAT = 3.8 V, I SYS = 100 μA | 1.5 4 3.5 | 3 | mA mA mA | |||
| I BOOST | Battery discharge current in boost mode | VBAT = 4.2 V, Boost mode, I PMID = 0 A, converter switching | 3.5 | mA | ||
| VBUS/BAT POWER UP | VBUS/BAT POWER UP | VBUS/BAT POWER UP | VBUS/BAT POWER UP | VBUS/BAT POWER UP | VBUS/BAT POWER UP | VBUS/BAT POWER UP |
| V VBUS_OP | VBUS operating voltage | 3.9 | 6.2 | V | ||
| V VBUS_UVLOZ | VBUS for active I 2 C, no battery | V VBUS rising | 3.6 | V | ||
| V SLEEP | Sleep mode falling threshold | V VBUS falling, V VBUS-VBAT | 35 | 80 | 120 | mV |
| V SLEEPZ | Sleep mode rising threshold | V VBUS rising, V VBUS-VBAT | 170 | 250 | 350 | mV |
| V ACOV | VBUS over-voltage rising threshold | V VBUS rising | 6.2 | 6.6 | V | |
| V ACOV_HYST | VBUS over-voltage falling hysteresis | V VBUS falling | 250 | mV | ||
| V BAT_UVLOZ | Battery for active I 2 C, no VBUS | V BAT rising | 2.3 | V | ||
| V BAT_DPL | Battery depletion threshold | V BAT falling | 2.4 | 2.6 | V | |
| V BAT_DPL_HY | Battery depletion rising hysteresis | V BAT rising | 200 | mV |
BQ24295RGER Absolute Maximum Ratings
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| Voltage (with respect to GND) | VBUS (converter not switching) | -2 | 15 (2) | V |
| Voltage (with respect to GND) | PMID (converter not switching) | -0.3 | 15 (2) | V |
| Voltage (with respect to GND) | STAT | -0.3 | 12 | V |
| Voltage (with respect to GND) | BTST | -0.3 | 12 | V |
| Voltage (with respect to GND) | SW | -2 | 7 8 (Peak for 20ns duration) | V |
| Voltage (with respect to GND) | BAT, SYS (converter not switching) | -0.3 | 6 | V |
| Voltage (with respect to GND) | SDA, SCL, INT, OTG, ILIM, REGN, TS, QON, CE, D+, D-, | -0.3 | 7 | V |
| Voltage (with respect to GND) | BTST TO SW | -0.3 | 7 | V |
| Voltage (with respect to GND) | PGND to GND | -0.3 | 0.3 | V |
| Output sink current | INT, STAT | 6 | mA | |
| Junction temperature | -40 | 150 | °C | |
| Storage temperature range, T stg | -65 | 150 | °C |
BQ24295RGER Recommended Operating Conditions
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| V IN | Input voltage | 3.9 | 6.2 (1) | V |
| I IN | Input current (VBUS) | 3 | A | |
| I SYS | Output current (SYS) | 3.5 | A | |
| V BAT | Battery voltage | 4.4 | V | |
| I BAT | Fast charging current | 3 | A | |
| I BAT | Discharging current with internal MOSFET | 5.5 | A | |
| T A | Operating free-air temperature range | -40 | 85 | °C |
BQ24295RGER Thermal Information
| THERMAL METRIC (1) | bq24295 RGE (VQFN) 24 PIN | UNIT | |
|---|---|---|---|
| R θ JA | Junction-to-ambient thermal resistance | 32.2 | °C/W |
| R θ JC(top) | Junction-to-case (top) thermal resistance | 29.8 | °C/W |
| R θ JB | Junction-to-board thermal resistance | 9.1 | °C/W |
| ψ JT | Junction-to-top characterization parameter | 0.3 | °C/W |
| ψ JB | Junction-to-board characterization parameter | 9.1 | °C/W |
| R θ JC(bot) | Junction-to-case (bottom) thermal resistance | 2.2 | °C/W |
BQ24295RGER Typical Application
A typical application consists of the device configured as an I 2 C controlled power path management device and a single cell Li-Ion battery charger for single cell Li-Ion and Li-polymer batteries used in a wide range of tablets and other portable devices. It integrates an input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and BATFET (Q4) between the system and battery. The device also integrates a bootstrap diode for the high-side gate drive.
Other Battery Chargers
- SLM6305 – SOLA IC, Li-ion Battery Charger / Synchronous Buck Converter
- NPM1300-QEAA-R7 – Nordic Semiconductor, Battery Charger Power Management IC
- MP2639BGR-Z – Monolithic Power Systems, 1S Li-ion Switching Charger with OTG
- BQ24075 – Texas Instruments, Standalone 1-Cell 1.5-A Linear Battery Chargers with Power Path
- BQ24075-Q1 – Texas Instruments, Standalone 1-Cell 1.5-A Linear Battery Chargers with Power Path
- BQ24075RGTR – Texas Instruments, Standalone 1-Cell 1.5-A Linear Battery Chargers with Power Path
- BQ24075RGTR.A – Texas Instruments, Standalone 1-Cell 1.5-A Linear Battery Chargers with Power Path
- BQ24075RGTR.B – Texas Instruments, Standalone 1-Cell 1.5-A Linear Battery Chargers with Power Path
All Battery Chargers datasheetsAll Texas Instruments datasheets (2,418)
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