BQ7790509PWR
Lithium Battery TSSOP-20 Battery Management RoHS
Stackable lithium-ion battery protector for 3 - 20 series-connected cells with ultra-low power consumption, capable of monitoring voltage, current, temperature, and detecting disconnections
- Manufacturer
- TI
- Manufacturer part #
- BQ7790509PWR
- Store part #
- C2866527
- Package / case
- TSSOP-20
- Category
- Battery Management
- Packaging
- Tape & Reel (TR)
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement · policy
11,543 in stock
#C2866527
Stock & price checked 7 days ago
| Quantity | Unit price | Pack price |
|---|---|---|
| 1+ | ₹139.48 | ₹139.48 |
| 10+ | ₹112.55 | ₹1,125.50 |
| 30+ | ₹99.07 | ₹2,972.10 |
| 100+ | ₹85.60 | ₹8,560.00 |
| 500+ | ₹77.57 | ₹38,785.00 |
| 1,000+ | ₹73.44 | ₹73,440.00 |
1 × ₹139.48
₹139.48
excl. GST
₹164.59 incl. 18% GST
- Dispatch in 7–10 working days
- GST invoice with every order
- Standard pack: 2,000 per reel
BQ7790509PWR
₹139.48 for 1 + GST
Specifications
- Operating Temperature
- -40℃~+85℃
- Quiescent Current
- 6uA
- Operating Voltage
- 3V~25V
- Type of Battery
- Lithium Battery
- Features
- Overcharge protection;Over-discharge protection;Overcurrent Protection;Short-Circuit Protection;Battery temperature monitoring
- The Chip Type
- Protection IC
Packaging & compliance
- RoHS
- ROHS3 Compliant
- Lifecycle
- Active
- ECCN
- EAR99
- Packaging
- Tape & Reel (TR)
- Standard pack
- 2,000 / Reel
- Sold per
- Piece
- Minimum order
- 1
- Unit weight
- 0.124 g
Overview
The BQ77904 and BQ77905 devices are low-power battery pack protectors that can implement a series of voltage, current, and temperature protections without microcontroller (MCU) control. The stackable interface of these devices allows for easy expansion, supporting battery applications from 3 cells in series to 20 cells or more in series. The protection thresholds and delays are factory-programmed, and multiple configurations are available for selection. To enhance flexibility, separate over-temperature and under-temperature discharge thresholds (OTD and UTD) as well as over-temperature and under-temperature charge thresholds (OTC and UTC) are also provided.
Applications
- Power tools, garden tools
- Start-stop battery packs
- Lead-acid (PbA) backup batteries
- Light electric vehicles
- Energy storage systems, uninterruptible power supplies (UPS)
- 10.8V to 72V battery packs
Key features
- Normal mode: 6µA (bQ77904 and bQ77905)
- Complete voltage, current, and temperature protection
- Scalable cell count, supporting 3S to 20S or more
- Voltage protection (±10mV accuracy)
- Overvoltage: 3V to 4.575V
- Undervoltage: 1.2V to 3V
- Open-wire cell and broken wire detection (OW)
- Current protection
- Overcurrent discharge 1: -10mV to -85mV
- Overcurrent discharge 2: -20mV to +170mV
- Short-circuit discharge: -40mV to +340mV
- Accuracy of ±20% for voltage ≤20mV and ±30% for voltage >20mV across the full temperature range
- Temperature protection
- Overtemperature charge: 45°C to 50°C
- Overtemperature discharge: 65°C to 70°C
- Undertemperature charge: -5°C to 0°C
- Low-temperature discharge: -20°C or -10°C
- Additional features
- Separate CHG and DSG FET drivers
- 36V absolute maximum rating per cell input
- Built-in self-test for high reliability
- Shutdown mode: 0.5µA (maximum)
Alternatives
Similar parts — check the datasheet before substituting.
| Part | Manufacturer | Package | Stock | Price from (excl. GST) | Action | |
|---|---|---|---|---|---|---|
 | BQ7790509PW#C133964TI · TSSOP-20 | TI | TSSOP-20 | On request | Price on request | Quote |
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