NEX1324XF-Q100 is an AEC-Q100 Grade 1 qualified 24-channel, 40 V high-side LED driver with up to 100 mA output current per channel, PWM and analog dimming support, and MTP for configurable depending on application requirements in automotive lighting systems.
NEX1324XF-Q100 supports 8-bit output current with high accuracy from channel to channel and device to device. Channels can be used in parallel to support higher current output than 100 mA. The low dropout of the device helps mitigate the heat generation of the device itself. The device integrates UART over CAN as the digital interface to enable long distance off-board communication, which is a typical scenario for automotive exterior lighting where different lamp functions are typically located in different PCBs. NEX1324XF-Q100 also supports LED open-circuit, short to ground, and single-LED short-circuit diagnostics. Additionally, a configurable watchdog automatically sets the part into Fail-Safe state when the CAN bus connection is lost.
NEX1324XF-Q100 can operate at a junction temperature ranging from -40 °C to 150 °C in a thermally enhanced 38-pin HTSSOP38 package.
Figure 1.Typical application
Features and benefits
Automotive product qualification in accordance with AEC-Q100 (Grade 1)
Specified from -40 °C to 125 °C
Developed according to ISO26262 with process complying to ASIL-B
24-channel precision high-side current output:
VVbat: 4.5 V to 36 V; VVs: 3.8 V to 20 V
Up to 100 mA channel current per channel
2-bit global, 6-bit independent current setting
Current accuracy within ±5 % from 5 mA to 100 mA
Low voltage drops: 600 mV at 100 mA
12-bit independent PWM dimming
Programmable PWM frequency: 200 Hz to 23.4 kHz
Linear and exponential dimming method
Integrated CAN compatible interface:
Data rate up to 2 Mbit/s
Supports UART data format
Supports 27 slave addresses set by resistors
Diagnostics and protections:
Programmable Fail-Safe state
LED open-circuit detection
LED short-circuit detection
Single-LED short-circuit diagnostic
Programmable low-supply detection
Open-drain FLT pin for fault indication
Communication Watchdog
8-bit ADC for pin voltage measurement
Overtemperature protection
HBM: ANSI/ESDA/JEDEC JS-001 class 3A exceeds 4000 V
CDM: ANSI/ESDA/JEDEC JS-002 class C2b exceeds 750 V
Applications
Automotive exterior rear lights
Automotive exterior headlights
NEX1324XF-Q100 is an AEC-Q100 Grade 1 qualified 24-channel, 40 V high-side LED driver with up to 100 mA output current per channel, PWM and analog dimming support, and MTP for configurable depending on application requirements in automotive lighting systems.
NEX1324XF-Q100 supports 8-bit output current with high accuracy from channel to channel and device to device. Channels can be used in parallel to support higher current output than 100 mA. The low dropout of the device helps mitigate the heat generation of the device itself. The device integrates UART over CAN as the digital interface to enable long distance off-board communication, which is a typical scenario for automotive exterior lighting where different lamp functions are typically located in different PCBs. NEX1324XF-Q100 also supports LED open-circuit, short to ground, and single-LED short-circuit diagnostics. Additionally, a configurable watchdog automatically sets the part into Fail-Safe state when the CAN bus connection is lost.
NEX1324XF-Q100 can operate at a junction temperature ranging from -40 °C to 150 °C in a thermally enhanced 38-pin HTSSOP38 package.
Figure 1.Typical application
Features and benefits
- Automotive product qualification in accordance with AEC-Q100 (Grade 1)
- Specified from -40 °C to 125 °C
- Developed according to ISO26262 with process complying to ASIL-B
- 24-channel precision high-side current output:
- VVbat: 4.5 V to 36 V; VVs: 3.8 V to 20 V
- Up to 100 mA channel current per channel
- 2-bit global, 6-bit independent current setting
- Current accuracy within ±5 % from 5 mA to 100 mA
- Low voltage drops: 600 mV at 100 mA
- 12-bit independent PWM dimming
- Programmable PWM frequency: 200 Hz to 23.4 kHz
- Linear and exponential dimming method
- Integrated CAN compatible interface:
- Data rate up to 2 Mbit/s
- Supports UART data format
- Supports 27 slave addresses set by resistors
- Diagnostics and protections:
- Programmable Fail-Safe state
- LED open-circuit detection
- LED short-circuit detection
- Single-LED short-circuit diagnostic
- Programmable low-supply detection
- Open-drain FLT pin for fault indication
- Communication Watchdog
- 8-bit ADC for pin voltage measurement
- Overtemperature protection
- HBM: ANSI/ESDA/JEDEC JS-001 class 3A exceeds 4000 V
- CDM: ANSI/ESDA/JEDEC JS-002 class C2b exceeds 750 V
Applications
- Automotive exterior rear lights
- Automotive exterior headlights
