LP8864QRHBRQ1
| Parameters | |
|---|---|
| Series | Automotive, AEC-Q100 |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
| RoHS Status | Not applicable |
| Package / Case | 32-VFQFN Exposed Pad |
| Frequency | 100kHz ~ 2.2MHz |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount, Wettable Flank |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Type | DC DC Controller |
| Number of Outputs | 4 |
| Voltage - Output | 0V ~ 48V |
| Applications | Automotive, Backlight |
| Supplier Device Package | 32-VQFN (5x5) |
| Dimming | Analog, I²C, PWM |
| Topology | SEPIC, Step-Up (Boost) |
| Current - Output / Channel | 200mA |
| Internal Switch(s) | No |
| Voltage - Supply (Max) | 5.5V |
| Voltage - Supply (Min) | 3V |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | LP8864 |
| Other Names | 296-LP8864QRHBRQ1TR |
| Standard Package | 3,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
LP8864QRHBRQ1 4-channel LED driver
The LP8864QRHBRQ1 from Texas Instruments is an automotive-grade, high-efficiency 4-channel LED driver specifically designed for advanced backlighting applications in automotive displays. This device integrates a high-performance boost controller with four regulated current sinks, capable of driving up to 100 mA per channel to deliver uniform and flicker-free illumination. Compliant with the AEC-Q100 Grade 1 qualification for automotive environments, it operates over a wide input voltage range of 3.0 V to 36 V, making it suitable for both battery-connected and start-stop scenarios. Housed in a compact 32-pin VQFN package, it provides a complete solution for driving LED strings in modern vehicle infotainment and instrument clusters.
The LP8864QRHBRQ1 architecture features a high-efficiency synchronous boost converter that can be configured for various topologies (boost, SEPIC, or flyback) to support a wide range of LED string voltages. It incorporates precise current matching (0.5% typical) across all channels to ensure exceptional display uniformity. Advanced dimming is achieved through hybrid log/linear PWM dimming with a high dimming ratio (up to 25,000:1), eliminating visible flicker. Key protection features include LED open/short detection, overvoltage protection, overtemperature protection, and comprehensive fault diagnostics reported via the I²C interface, ensuring robust and reliable operation in demanding automotive conditions.
Alternative LED Driver Models
● ROHM Semiconductor BD81A76EFV-M: A 4-channel WLED driver with 120 mA/channel capability featuring 8-bit/12-bit hybrid dimming and spread spectrum functionality for reduced EMI in automotive displays.
● NXP Semiconductor AS3695B: A 4-channel high-efficiency LED driver with 30 mA per channel offering precise analog and PWM dimming control for medium-sized LCD panel backlighting applications.
● Analog Devices LT3952: A monolithic 4-channel LED driver capable of delivering 100 mA per channel with integrated boost controller and comprehensive fault protection for automotive and industrial displays.
● Infineon Technologies TLD5097EP: A step-up DC-DC controller for LED backlighting with 4 current sinks (100 mA each) featuring single-wire digital interface and advanced diagnostics for automotive applications.
