BQ40Z50RSMT-R1 Texas Instruments Integrated Circuit (Quad Flat No-Lead) In Stock
BQ40Z50RSMT-R1 is a multi-cell battery fuel gauge IC from Texas Instruments, supporting 2S–4S Li-ion/Li-polymer packs with integrated protection, impedance track algorithm, and SMBus interface. From $1.21, in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat No-Lead
- Pin Count
- 33
- Lifecycle
- ACTIVE
- Datasheet
- BQ40Z50RSMT-R1 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.2093(MOQ 10)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Impedance Track™ algorithm for highly accurate state-of-charge estimation across temperature and aging
- Integrated cell balancing, overcurrent, overvoltage, and short-circuit protection for 2S–4S packs
- SMBus/I2C interface with SBS-compliant gas gauge registers for easy host integration
- 32-pin QFN package with wide operating range: –40°C to +85°C
- Programmable protection thresholds via flash memory for flexible battery pack design
Applications
The BQ40Z50RSMT-R1 is ideal for portable medical devices, industrial handheld tools, and laptop/tablet battery packs requiring precise fuel gauging and multi-layer protection. It is widely used in 2S–4S Li-ion smart battery packs where accurate remaining capacity reporting and safety cut-off are critical. Its SMBus compatibility makes it suitable for systems following the Smart Battery Specification.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | BATTERY MONITOR |
| JESD-30 Code | S-PQCC-N32 |
| JESD-609 Code | e4 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC32,.16SQ,16 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 26V |
| Supply Voltage-Min (Vsup) | 2.2V |
| Supply Voltage-Nom (Vsup) | 14.4V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.4mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for BQ40Z50RSMT-R1:
Texas Instruments Adjustable, 4 Channel, PQCC32
Frequently Asked Questions
What battery configurations does the BQ40Z50RSMT-R1 support?
The BQ40Z50RSMT-R1 supports 2-series to 4-series (2S–4S) Li-ion or Li-polymer battery configurations. It integrates cell balancing and protection circuitry, making it a complete battery management solution for packs with nominal voltages ranging from approximately 7.4 V to 14.8 V.
What protection features are built into the BQ40Z50RSMT-R1?
The BQ40Z50RSMT-R1 includes integrated overcharge, over-discharge, overcurrent in charge/discharge, and short-circuit protection. All thresholds are user-programmable via on-chip flash memory, enabling flexible pack designs without external protection ICs.
How accurate is the BQ40Z50RSMT-R1 fuel gauge?
Texas Instruments' Impedance Track™ algorithm delivers state-of-charge accuracy within ±1% under typical conditions by continuously modeling cell impedance. It compensates for temperature variation and battery aging, providing reliable remaining capacity data across the battery's entire lifecycle.
What interface does the BQ40Z50RSMT-R1 use for host communication?
The BQ40Z50RSMT-R1 communicates via an SMBus/I2C interface and is fully compliant with the Smart Battery Specification (SBS). It exposes standard registers for remaining capacity, full charge capacity, cycle count, and state-of-health, simplifying firmware integration.
What package does the BQ40Z50RSMT-R1 come in, and where can I buy it?
The BQ40Z50RSMT-R1 is housed in a compact 32-pin QFN (Quad Flat No-Lead) package with a 0.5 mm pitch, suitable for space-constrained designs. It is available worldwide from authorized distributors starting at approximately $1.21 per unit, with global shipping options.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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