Table 6-1. Pin Functions
Texas InstrumentsUnited States
IC BATT MFUNC LI-ION 1-4C 32VQFN
The BQ40Z50-R2 is a 1- to 4-series Li-ion battery pack manager with Impedance Track technology, supporting 100 mAh to 29 Ah packs, featuring protection, balancing, and SMBus interface in a 32-pin VQFN package.Checked against the datasheet
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Technical parameters
Datasheet-verified parameters
22 items| Parameter | Value and test conditions | Source |
|---|---|---|
| Package | VQFN (32), 4.00 mm × 4.00 mm | |
| Operating Temperature | -40 to 85 °C | |
| RoHS | Yes | |
| Recommended Supply Voltage | Min: 2.2 V, Max: 26 V (BAT, VCC, PBI) | |
| Absolute Maximum Supply Voltage | Min: -0.3 V, Max: 30 V (BAT, VCC, PBI) | |
| Shutdown Voltage | Min: 1.8 V, Nom: 2.0 V, Max: 2.2 V (V_PACK < V_SHUTDOWN-) |
All parameters (14)
| Environment and package | |
|---|---|
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C~85°C(TA) |
| Package | Tape & Reel (TR); Cut Tape (CT); Digi-Reel® |
| Package / Case | 32-VFQFN Exposed Pad |
| Supplier Device Package | 32-VQFN (4x4) |
| Other | |
| Base Product Number | BQ40Z50 |
| Battery Chemistry | Lithium Ion/Polymer |
| Fault Protection | Over Current, Over Temperature, Over/Under Voltage, Short Circuit |
| Function | Multi-Function Controller |
| Interface | SMBus |
| Mfr | Texas Instruments |
| Number of Cells | 1 ~ 4 |
| Product Status | Active |
| Series | Impedance Track™ |
Pinout and package
Table 6-1. Pin Functions
| Pin | Name | Function | Source |
|---|---|---|---|
| BAT | Primary power supply input pin | ||
| BTP_INT | Battery Trip Point (BTP) interrupt output. | ||
| CHG | NMOS | Charge FET drive output pin. | |
| DISP | Display control for LEDs. | ||
| DSG | NMOS | Discharge FET drive output pin. | |
| FUSE | Fuse drive output pin. | ||
| LEDCNTLA | LED | display segment that drives the external LEDs depending on the firmware configuration. | |
| LEDCNTLB | LED | display segment that drives the external LEDs depending on the firmware configuration. | |
| LEDCNTLC | LED | display segment that drives the external LEDs depending on the firmware configuration. | |
| NC | Not internally connected. It is okay to leave floating or to tie to VSS. | ||
| PACK | Pack sense input pin | ||
| PBI | Power supply backup input pin. Connect to the 2.2-μF capacitor to VSS. | ||
| PCHG | PMOS | Precharge FET drive output pin. | |
| PRES or SHUTDN | Host system present input for removable battery pack or emergency system shutdown input for embedded pack. | ||
| PTC | Safety PTC thermistor input pin. | ||
| PTCEN | Safety PTC thermistor enable input pin. | ||
| SMBC | SMBus clock pin | ||
| SMBD | SMBus data pin | ||
| SRN | Analog input pin connected to the internal coulomb counter peripheral for integrating a small voltage between SRP and SRN where SRP is the top of the sense resistor. | ||
| SRP | Analog input pin connected to the internal coulomb counter peripheral for integrating a small voltage between SRP and SRN where SRP is the top of the sense resistor. | ||
| TS1 | Temperature sensor 1 thermistor input pin. | ||
| TS2 | Temperature sensor 2 thermistor input pin. | ||
| TS3 | Temperature sensor 3 thermistor input pin. | ||
| TS4 | Temperature sensor 4 thermistor input pin. | ||
| VC1 | Sense voltage input pin for the least positive cell, balance current input for the least positive cell, and return balance current for the second-most positive cell. | ||
| VC2 | Sense voltage input pin for the second-most positive cell, balance current input for the second-most positive cell, and return balance current for the third-most positive cell. | ||
| VC3 | Sense voltage input pin for the third-most positive cell, balance current input for the third-most positive cell, and return balance current for the most positive cell. | ||
| VC4 | Sense voltage input pin for the most positive cell, and balance current input for the most positive cell. | ||
| VCC | Secondary power supply input | ||
| VSS | Device ground |
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