Overview
The TPS92633-Q1 is a three-channel automotive high-side LED driver designed by Texas Instruments. This device is AEC-Q100 qualified, ensuring its reliability and performance in automotive applications. It operates over a wide input voltage range of 4.5 V to 40 V, making it suitable for systems powered directly by automotive batteries. The driver features a unique thermal management design, which includes thermal sharing by external shunt resistors to reduce temperature rise on the device. Each channel can output up to 150 mA with high precision current regulation and ±5% accuracy over the full temperature range.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 4.5 | - | 40 | V |
| Output Current per Channel | 5 | - | 150 | mA |
| Operating Ambient Temperature | -40 | - | 125 | °C |
| Junction Temperature Range | -40 | - | 150 | °C |
| Voltage Dropout (INx to OUTx) | 200 | - | 600 | mV |
| Thermal Shutdown Junction Temperature | 157 | - | 187 | °C |
| Package Type | - | - | HTSSOP (20 pins) | - |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature grade 1: –40°C to 125°C.
- Wide input voltage range: 4.5 V to 40 V.
- Thermal sharing by external shunt resistors to reduce temperature rise.
- Up to 150-mA current output per channel with ±5% accuracy over the full temperature range.
- Independent current setting by resistor and independent PWM pin for brightness control.
- Support for off-board brightness binning resistors and external NTC for current derating.
- Low dropout voltage: maximum dropout of 600 mV at 150 mA.
- Diagnostics and protection features including LED open-circuit, LED short-to-GND, and single LED short-circuit detection with auto-recovery.
- Fault bus configurable as either one-fails–all-fail or only-failed-channel off (N-1).
- Thermal shutdown and operation junction temperature range: –40°C to 150°C.
Applications
- Automotive exterior rear lights: rear lamp, center high mounted stop lamp, side marker.
- Automotive exterior small lights: door handle, blind spot detection indicator, charging inlet.
- Automotive interior lights: overhead console, reading lamp.
- General-purpose LED driver applications.
Q & A
- What is the input voltage range of the TPS92633-Q1?
The input voltage range is 4.5 V to 40 V.
- How many channels does the TPS92633-Q1 support?
The device supports three channels.
- What is the maximum output current per channel?
The maximum output current per channel is 150 mA.
- What is the operating ambient temperature range of the TPS92633-Q1?
The operating ambient temperature range is –40°C to 125°C.
- Does the TPS92633-Q1 support thermal shutdown?
- What types of diagnostics and protection does the TPS92633-Q1 offer?
The device offers diagnostics and protection for LED open-circuit, LED short-to-GND, and single LED short-circuit detection with auto-recovery.
- Can the fault bus be configured?
- What is the package type of the TPS92633-Q1?
The package type is HTSSOP with 20 pins.
- Is the TPS92633-Q1 AEC-Q100 qualified?
- What are some typical applications of the TPS92633-Q1?
Typical applications include automotive exterior and interior lighting, such as rear lamps, side markers, door handles, and reading lamps.
