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Texas Instruments BQ76942 | Demoboard BQ76942EVM
3-series to 10-series multicell battery monitor and protector
Details
| Topologie | Sonstige Topologie |
Beschreibung
The Texas Instruments BQ76942 is a highly integrated, high accuracy battery monitor and protector for 3-series to 10-series Li-ion, Li-polymer, and LiFePO4 battery packs. The device includes a high-accuracy monitoring system, a highly configurable protection subsystem, and support for autonomous or host controlled cell balancing. Integration includes high-side charge-pump NFET drivers, dual programmable LDOs for external system use, and a host communication peripheral supporting 400-kHz I2C, SPI, and HDQ one-wire standards. The BQ76942 is available in a 48-pin TQFP package.
Eigenschaften
- Battery monitoring capability for 3-series to 10-series cells
- Integrated charge pump for high-side NFET protection with optional autonomous recovery
- Extensive protection suite including voltage, temperature, current, and internal diagnostics
- Two independent ADCs
- Support for simultaneous current and voltage sampling
- High-accuracy coulomb counter with input offset error < 1 µV (typical)
- High-accuracy cell voltage measurement < 10 mV (typical)
- Wide-range current applications (±200-mV measurement range across sense resistor)
- Integrated secondary chemical fuse drive protection
- Autonomous or host-controlled cell balancing
- Multiple power modes (typical battery pack operating range conditions)
- NORMAL mode: 286 µA
- Multiple SLEEP mode options: 24 µA to 41 µA
- Multiple DEEPSLEEP mode options: 9 µA to 10 µA
- SHUTDOWN Mode: 1 µA
- High-voltage tolerance of 85 V on cell connect and select additional pins
- Tolerant of random cell attach sequence on production line
- Support for temperature sensing using internal sensor and up to nine external thermistors
- Integrated one-time-programmable (OTP) memory programmable by customers on production line
- Communication options include 400-kHz I2C, SPI, and HDQ one-wire interface
- Dual programmable LDOs for external system usage
- 48-pin TQFP package (PFB)
Weiterführende Informationen
Artikeldaten
| Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | λDom typ. (nm) | Farbe | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chiptechnologie | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Bauform | Betriebstemperatur | DF (%) | RISO | Keramiktyp | L (mm) | W (mm) | Fl (mm) | Pins (pcs) | Reihen | H (mm) | Gender | Typ | IR (A) | Verpackung | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 150060VS75000 | SPEC | 7 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WL-SMCW SMT Mono-color Chip LED Waterclear | 570 | Hellgrün | 572 | 40 | 2 | AlInGaP | 140 | – | – | – | 0603 | -40 °C up to +85 °C | – | – | – | 1.6 | 0.8 | – | – | – | 0.7 | – | – | – | Tape and Reel | ||
| 150060RS75000 | SPEC | 26 Dateien Strahldaten
| Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WL-SMCW SMT Mono-color Chip LED Waterclear | 625 | Rot | 630 | 250 | 2 | AlInGaP | 140 | – | – | – | 0603 | -40 °C up to +85 °C | – | – | – | 1.6 | 0.8 | – | – | – | 0.7 | – | – | – | Tape and Reel | ||
 | 885012205008 | SPEC | 8 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WCAP-CSGP MLCCs 10 V(DC) | – | – | – | – | – | – | – | 2.2 nF | ±10% | 10 | 0402 | -55 °C up to +125 °C | 5 | 10 GΩ | X7R Klasse II | 1 | 0.5 | 0.25 | – | – | 0.5 | – | – | – | 7" Tape & Reel | ||
| 885012205037 | SPEC | 6 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WCAP-CSGP MLCCs 16 V(DC) | – | – | – | – | – | – | – | 100 nF | ±10% | 16 | 0402 | -55 °C up to +125 °C | 5 | 5 GΩ | X7R Klasse II | 1 | 0.5 | 0.25 | – | – | 0.5 | – | – | – | 7" Tape & Reel | ||
| 885012206040 | SPEC | 8 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WCAP-CSGP MLCCs 16 V(DC) | – | – | – | – | – | – | – | 10 nF | ±10% | 16 | 0603 | -55 °C up to +125 °C | 3.5 | 10 GΩ | X7R Klasse II | 1.6 | 0.8 | 0.4 | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
| 885012206095 | SPEC | 8 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | 100 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | 3 | 5 GΩ | X7R Klasse II | 1.6 | 0.8 | 0.4 | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
 | 61300211121 | SPEC | – | 6 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | 5.08 | – | – | 2 | Single | – | Pin Header | Gerade | 3 | Beutel |
| Artikel Nr. | Datenblatt | Simulation | |
|---|---|---|---|
| 150060VS75000 | SPEC | |
| 150060RS75000 | SPEC | |
| 885012205008 | SPEC | |
| 885012205037 | SPEC | |
| 885012206040 | SPEC | |
| 885012206095 | SPEC | |
| 61300211121 | SPEC | – |
| Muster |
|---|
| Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | λDom typ. (nm) | Farbe | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chiptechnologie | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Bauform | Betriebstemperatur | DF (%) | RISO | Keramiktyp | L (mm) | W (mm) | Fl (mm) | Pins (pcs) | Reihen | H (mm) | Gender | Typ | IR (A) | Verpackung | Muster |
|---|
