Product overview
Key Benefits
Smart eFuse for 12 V, 24 V and 48 V automotive power nets
Intelligent high‑side switch controller for wiring protection in automotive power distribution.
Accurate current, voltage and temperature diagnostics
Integrated ADCs monitor VSENSE, VDS, VOUT, and NTC for precise system insight.
Configurable SPI control with built in safety features
32‑bit SPI, NVM profiles, watchdog, and self‑tests support safety-oriented automotive power distribution designs.
Description
The VNF1248FVNF1248XF integrated circuit is an advanced controller for an external high-side power MOSFET, and it is designed for 12 V, 24 V, and 48 V automotive applications. The VNF1248FVNF1248XF interfaces with a host microcontroller through a 3.3 V or 5 V CMOS-compatible SPI interface. It provides an extensive set of protections and diagnostics for the system in which it operates.
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All features
- AEC-Q100 qualified
- General
- High-side switch control IC with e-fuse protection for automotive 12 V, 24 V and 48 V applications
- 32-bit ST-SPI interface compatible with 3.3 V and 5 V CMOS level
- 2-stage charge pump
- Gate drive for an external MOSFET in high-side configuration
- High precision uni-directional current sense through an external high side shunt resistor
- Input for a NTC resistor to monitor the external MOSFET temperature
- Very low standby current by embedded P-channel switch
- Device configuration lockout by a dedicated digital input pin
- Integrated ADCs for IC and MOSFET temperatures, load voltage and current
- Fast ADCs for external MOSFET voltage drop and overload/hard short
- CCM: capacitive charging mode
- Few times programmable non-volatile memory (FTP NVM) embedded for customer sector program/erase/read
- Direct input pin (DIN) for hardware control of external MOSFET gate pin
- Package QFN32L 5x5 package with wettable flanks
- Protections
- Battery undervoltage shutdown
- External MOSFET desaturation shutdown configurable via SPI
- Hard short circuit latch-off configurable via SPI
- Current vs time latch-off configurable via SPI (fuse-emulation)
- Device overtemperature shutdown
- External MOSFET overtemperature shutdown
- Reverse battery
- Loss of GND
EDA Symbols, Footprints and 3D Models
STMicroelectronics - VNF1248F
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3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| VNF1248FTR | Active Product is in volume production. | QFN-32L WF | Automotive | Ecopack2 | - | - | |
VNF1248FTR
Package:
QFN-32L WFMaterial Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VNF1248FTR | | | distributors No availability of distributors reported, please contact our sales office |
VNF1248FTR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors