BQ24232H
USB Li-Ion Linear Charger with Power PathThe BQ24232H is a usb li-ion linear charger with power path from Texas Instruments. View the full BQ24232H datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Official BQ24232H datasheet (PDF) — the source this page was extracted from.
BQ24232H Key Specifications
| Parameter | Value |
|---|---|
| Interfaces | EN1/EN2 input current limit select, CE enable, CHG open-drain status |
| Protection | Reverse current, short-circuit, thermal regulation, NTC thermistor input |
| Safety Timers | Programmable precharge and fast-charge |
| Package Dimensions | 3.00 mm x 3.00 mm, 16 pins |
| Termination Current | Programmable (ITERM pin) |
| Charge Current Range | 25 mA to 500 mA |
| DPM Threshold (VDPM) | VO(REG) - 100 mV |
| Input Voltage Rating | 28 V (absolute tolerance) |
| Maximum Input Current | 100 mA / 500 mA selectable; programmable up to 500 mA via ILIM |
| Battery Regulation Voltage | 4.35 V |
| Supply Input Range For Charging | 4.35 V to 10 V |
| Input Overvoltage Protection (VOVP) | 10.5 V |
| Output Regulation Voltage (VOUT(REG)) | 4.5 V |
BQ24232H Overview
Part: bq24232H (bq24232HRGTR / bq24232HRGTT) — Texas Instruments, bq2423xx family
Type: USB-Powered Li-Ion Linear Battery Charger with Power Path Management
Description: 28 V-rated input, linear Li-Ion charger with dynamic power path management, supporting 25–500 mA charge current, programmable input current limit up to 500 mA, and a 10.5 V input OVP threshold (bq24232H).
Operating Conditions:
- IN voltage range: 4.35–26 V; IN operating range 4.35–10.2 V for '232H (4.35–6.4 V for '230H)
- Operating junction temperature: -40 to 125 °C
- Input current: up to 500 mA; charge current (BAT, charging): up to 500 mA
- OUT/BAT discharge current: up to 1500 mA
Absolute Maximum Ratings:
- Max input voltage: IN 28 V; OUT 7 V; BAT 5 V; other pins 7 V (with respect to VSS)
- Max input current (IN): 600 mA
- Max continuous output current: OUT 1700 mA; BAT (discharge) 1700 mA
- Max junction temperature: 150 °C
- Storage temperature: -65 to 150 °C
Key Specs:
- UVLO: 3.2–3.4 V (3.3 V typ), hysteresis 200–300 mV
- OVP threshold ('232H): 10.2–10.8 V (10.5 V typ); '230H: 6.4–6.8 V (6.6 V typ)
- OUT regulation voltage V O(REG): 4.4–4.6 V (4.5 V typ)
- Max input current: 90–100 mA (EN1=LO, EN2=LO); 450–500 mA (EN1=HI, EN2=LO)
- Programmable input current limit: 200–500 mA with R ILIM = 3.1–7.8 kΩ
- Dropout V IN–V OUT: 150 mV typ, 237.5 mV max (V IN = 4.45 V, I IN = 500 mA)
- Dropout V BAT–V OUT: 62.5 mV max (I OUT = 500 mA, V IN = 0 V)
- Sleep current into BAT: 6.5 μA max (T J = 85 °C); active supply current: 1.5 mA max
- Thermal resistance θ JA: 44.5 °C/W
Features:
- Compliant with USB charger specifications; input current selectable at 100 mA or 500 mA
- Input-based dynamic power management (VIN-DPM)
- 28 V-rated input with overvoltage protection
- 4.35 V battery regulation
- Dynamic power path management (DPPM)
- Output current monitoring (ISET) for charge currents up to 500 mA
- Programmable termination current (bq24232H)
- Programmable precharge and fast-charge safety timers
- Reverse current, short-circuit, and thermal protection
- NTC thermistor input
- Start-up sequence limiting inrush current
- Charging/charge-complete and power-good status outputs
Applications:
- Bluetooth devices
- Low-power handheld devices
Package:
- VQFN-16 (RGT), 3.00 mm × 3.00 mm
BQ24232H Features
- 1 · Fully Compliant with USB Charger Specifications
-
- Maximum input current selectable at 100 mA and 500 mA
-
- 100 mA maximum current limit ensures charging complies with USB-IF specifications
-
- Input-based dynamic power management (VIN - DPM) prevents use of poor-quality USB power sources
- 28 V rated input voltage with overvoltage protection
- 4.35 V battery regulation
- Integrated dynamic power path management (DPPM) allows charging the battery independently while powering the system
- Output current monitoring (ISET) function supports charge currents up to 500 mA
- Programmable input current limit of up to 500 mA for wall adapters
- Programmable termination current (bq24232H)
- Programmable precharge and fast charge safety timers
- Reverse current, short-circuit, and thermal protection
- Negative temperature coefficient (NTC) thermistor input
- Proprietary start-up sequence limits inrush current
- Status indication – charging / charge complete, power good
- Small 3 mm × 3 mm 16-pin quad flat no-lead (QFN) package
BQ24232H Pin Configuration
RGT Package 16 Pins Top View
Pin Functions
| PIN - NAME | PIN - NUMBER - '230H | PIN - NUMBER - '232H | I/O | DESCRIPTION |
|---|---|---|---|---|
| BAT | 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- μ F to 47- μ F ceramic capacitor. |
| CE | 4 | 4 | I | Charge Enable Active-Low Input. Connect CE to a high logic level to place the battery charger in standby mode. In standby mode, 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 k Ω . Do not leave CE unconnected to ensure proper operation. |
| CHG | 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. |
| EN1 | 6 | 6 | I | Input Current Limit Configuration Inputs. Use EN1 and EN2 control the maximum input current and enable USB compliance. See Table 1 for the description of the operation states. EN1 and EN2 are internally pulled down with approximately 285 k Ω . Do not leave EN1 or EN2 unconnected to ensure proper operation. |
| EN2 | 5 | 5 | I | Input Current Limit Configuration Inputs. Use EN1 and EN2 control the maximum input current and enable USB compliance. See Table 1 for the description of the operation states. EN1 and EN2 are internally pulled down with approximately 285 k Ω . Do not leave EN1 or EN2 unconnected to ensure proper operation. |
| ILIM | 12 | 12 | I | Adjustable Current Limit Programming Input. Connect a 3.1-k Ω to 7.8-k Ω 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. |
| IN | 13 | 13 | I | Input Power Connection. Connect IN to the connected to external DC supply (AC adapter or USB port). The input operating range is 4.35 V to 6.6 V. The input can accept voltages up to 26 V without damage but operation is suspended. Connect bypass capacitor 1 μ F to 10 μ F to VSS. |
| ISET | 16 | 16 | I/O | Fast-Charge Current Programming Input. Connect a 3-k Ω to 36-k Ω 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 the Charge Current Translator section for more details. |
BQ24232H Electrical Characteristics
over operating free-air temperature range (unless otherwise noted)
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| INPUT | ||||||
| UVLO | Undervoltage lockout | V IN : 0 V → 4 V | 3.2 | 3.3 | 3.4 | V |
| V hys(UVLO) | Hysteresis on UVLO | V IN : 4 V → 0 V | 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: 3.5 V → 4 V | 55 | 95 | 145 | mV |
| V hys(INDT) | Hysteresis on V IN(DT) | VBAT = 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 → 5 V 1- μ s rise time to PGOOD = LO | 2 | ms | ||
| V OVP | Input overvoltage protection threshold | ('230H) V IN : 5 V → 7 V | 6.4 | 6.6 | 6.8 | V |
| V OVP | Input overvoltage protection threshold | ('232H) V IN : 5 V → 11 V | 10.2 | 10.5 | 10.8 | V |
| V hys(OVP) | Hysteresis on OVP | ('230H) V IN : 7 V → 5V | 110 | mV | ||
| V hys(OVP) | Hysteresis on OVP | ('232H) V IN : 11 V → 5 V | 175 | mV | ||
| t DGL(OVP) | Input overvoltage blanking time | 50 | μ s | |||
| t REC(OVP) | Input overvoltage recovery time | Time measured from V IN : 11 V → 5 V 1 μ s fall time to PGOOD = LO | 2 | ms | ||
| ILIM, ISET SHORT-CIRCUIT TEST | ILIM, ISET SHORT-CIRCUIT TEST | |||||
| I SC | Current source | 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) | 520 | mV | |||
| QUIESCENT CURRENT | 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 | 6.5 | μ A |
BQ24232H Absolute Maximum Ratings
over the 0°C to 125°C operating free-air temperature range (unless otherwise noted)
| MIN | MAX | UNIT | |||
|---|---|---|---|---|---|
| V I | Input voltage | IN (with respect to VSS) | -0.3 | 28 | V |
| V I | OUT (with respect to VSS) | -0.3 | 7 | V | |
| V I | BAT (with respect to VSS) | -0.3 | 5 | V | |
| V I | EN1, EN2, CE, TS, ISET, PGOOD, CHG, ILIM, TMR, TD, ITERM (with respect to VSS) | -0.3 | 7 | V | |
| I I | Input current | IN | 600 | mA | |
| I O | Output current (continuous) | OUT | 1700 | mA | |
| I O | BAT (Discharge mode) | 1700 | mA | ||
| Output sink current | CHG, PGOOD | 15 | mA | ||
| T J | Junction temperature | -40 | 150 | °C | |
| T stg | Storage temperature | -65 | 150 | °C |
BQ24232H Recommended Operating Conditions
| MIN | MAX | UNIT | |||
|---|---|---|---|---|---|
| IN voltage range | IN voltage range | 4.35 | 26 | V | |
| V I | IN operating voltage range | '230H | 4.35 | 6.4 | V |
| '232H | 4.35 | 10.2 | V | ||
| I IN | Input current, IN pin | Input current, IN pin | 500 | mA | |
| I OUT | Current, OUT pin | Current, OUT pin | 1500 | mA | |
| I BAT | Current, BAT pin (discharging) | Current, BAT pin (discharging) | 1500 | mA | |
| I CHG | Current, BAT pin (charging) | Current, BAT pin (charging) | 500 | mA | |
| T J | Junction temperature | Junction temperature | -40 | 125 | °C |
| R ILIM | Maximum input current programming resistor | Maximum input current programming resistor | 3.1 | 7.8 | k Ω |
| R ISET | Fast-charge current programming resistor | Fast-charge current programming resistor | 1.74 | 34.8 | k Ω |
| R TMR | Timer programming resistor | Timer programming resistor | 18 | 72 | k Ω |
| R ITERM | Termination programming resistor | '232H | 0 | 15 | k Ω |
BQ24232H Thermal Information
| THERMAL METRIC | (1) | bq2423xx RGT - 16 PINS | UNIT |
|---|---|---|---|
| θ JA | Junction-to-ambient thermal resistance | 44.5 | °C/W |
| θ JCtop | Junction-to-case (top) thermal resistance | 54.2 | °C/W |
| θ JB | 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 |
| θ JCbot | Junction-to-case (bottom) thermal resistance | 3.8 | °C/W |
BQ24232H Typical Application
Variants on the same datasheet
These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.
| Part Number | Manufacturer | Package |
|---|---|---|
| BQ24232HRGTR | Texas Instruments | 16-VFQFN Exposed Pad |
| BQ24232HRGTT | Texas Instruments | VQFN-16 3.0x3.0mm |
| BQ24232XH | Texas Instruments | VQFN-16 |
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