LP8860-Q1 - 4-Channel Automotive LED Driver | Texas Instruments
MPN: LP8860-Q1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.76 | $276.00 |
| 500 | $2.48 | $1,240.00 |
| 1,000 | $2.21 | $2,210.00 |
Drop-in alternatives for LP8860-Q1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
LP8860JQVFPRQ1
β Drop-Inπ Reference alternative (not in catalog)
TPS61196-Q1
β Drop-Inπ Reference alternative (not in catalog)
LP8865C-Q1
β Drop-Inπ Reference alternative (not in catalog)
LP8860-Q1 Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 |
| Output Current per Channel | 150 mA |
| Input Voltage Range | 3 V to 48 V |
| Switching Frequency | 100 kHz to 2.2 MHz |
| Dimming Method | Hybrid PWM and current dimming |
| Control Interface | PWM input, I2C, SPI |
| Package | 32-HLQFP (7x7 mm) |
| Operating Temperature Range | -40Β°C to +125Β°C |
| AEC-Q100 Qualified | Yes |
| Spread Spectrum | Yes |
| Phase-Shift PWM | Yes |
| Adaptive Output Voltage | Yes |
| Fault Protection | LED open/short, overvoltage, overtemperature |
| RoHS Compliant | Yes |
| Mounting Type | Surface Mount |
LP8860-Q1 Pin Configuration
| Pin 1 | VIN β Input supply voltage |
| Pin 2 | SW β Switch node of boost converter |
| Pin 3 | GND β Ground |
| Pin 4 | ISET β LED current set resistor connection |
| Pin 5 | TSENSE β Thermal sensing input |
| Pin 6 | PWM β PWM dimming input |
| Pin 7 | SCL β I2C clock |
| Pin 8 | SDA β I2C data |
| Pin 9 | CS β SPI chip select |
| Pin 10 | SCLK β SPI clock |
| Pin 11 | SDI β SPI data input |
| Pin 12 | SDO β SPI data output |
| Pin 13 | LED1 β LED channel 1 current sink |
| Pin 14 | LED2 β LED channel 2 current sink |
| Pin 15 | LED3 β LED channel 3 current sink |
| Pin 16 | LED4 β LED channel 4 current sink |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
LP8860-Q1 is suitable for 6 applications: Automotive Infotainment Displays, Instrument Clusters, Heads-Up Displays (HUD), Automotive Exterior Lighting, Industrial Display Backlighting, Portable Device Backlighting.
Automotive Infotainment Displays
The LP8860-Q1 is ideal for backlighting infotainment displays in vehicles. Its four 150 mA channels can drive multiple LED strings, providing uniform brightness. The wide input voltage range (3 V to 48 V) accommodates automotive power fluctuations, while hybrid PWM dimming reduces EMI and extends LED lifetime. The device's low-EMI design ensures compliance with automotive EMC standards, making it a reliable choice for infotainment systems.
Recommended
Instrument Clusters
The LP8860-Q1 is well-suited for instrument cluster backlighting, where precise current control and dimming are essential. Its four channels allow independent control of different display segments, and the phase-shift PWM minimizes audible noise and output ripple. The device's adaptive output voltage control reduces power dissipation, improving efficiency in the confined space of a cluster. AEC-Q100 qualification ensures reliability in harsh automotive environments.
Recommended
Heads-Up Displays (HUD)
The LP8860-Q1 is used in heads-up displays to backlight the projection unit. Its high current capability (150 mA per channel) ensures sufficient brightness for visibility in various lighting conditions. The spread-spectrum switching frequency helps avoid interference with other vehicle electronics. The device's compact 32-HLQFP package fits well in the limited space of a HUD module, and its fault protection features enhance system safety.
Recommended
Automotive Exterior Lighting
The LP8860-Q1 can be used for exterior lighting applications such as daytime running lights and tail lights. Its wide input voltage range and high current capability make it suitable for driving LED strings in 12 V systems. The hybrid PWM dimming allows for smooth brightness control, and the low-EMI design helps meet automotive EMC requirements. The device's robust protection features ensure reliable operation in outdoor conditions.
Recommended
Industrial Display Backlighting
The LP8860-Q1 is also suitable for industrial display backlighting, where reliability and wide input voltage range are important. Its four channels can drive multiple LED strings, and the adjustable switching frequency allows optimization for EMI and efficiency. The device's spread-spectrum capability helps reduce electromagnetic interference in industrial environments. The AEC-Q100 qualification ensures robust performance in demanding applications.
Recommended
Portable Device Backlighting
The LP8860-Q1 can be used in portable devices that require backlighting, such as handheld instruments and portable displays. Its wide input voltage range (3 V to 48 V) allows operation from various power sources, including batteries. The low quiescent current and adaptive output voltage control help extend battery life. The compact package and flexible dimming options make it suitable for space-constrained designs.
Recommended
Recommended Products Summary
Engineering reference data for LP8860-Q1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LP8860JQVFPRQ1 | TPS61196-Q1 | LP8865C-Q1 |
|---|---|---|---|---|
| Package | 32-HLQFP (7x7) | 32-HLQFP (7x7) | 32-HTQFP (7x7) | 32-HLQFP (7x7) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Channels | 4 | 4 | 6 | 4 |
| Output Current per Channel | 150 mA | 150 mA | 100 mA | 150 mA |
| Input Voltage Range | 3 V to 48 V | 3 V to 48 V | 4.5 V to 40 V | 3 V to 48 V |
| Switching Frequency | 100 kHz to 2.2 MHz | 100 kHz to 2.2 MHz | 100 kHz to 2.2 MHz | 100 kHz to 2.2 MHz |
| Dimming Method | Hybrid PWM and current dimming | Hybrid PWM and current dimming | Hybrid PWM and current dimming | Hybrid PWM and current dimming |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes |
Key Differentiators
- Higher per-channel current (150 mA) compared to TPS61196-Q1 (vs TPS61196-Q1)
- Wider input voltage range (3 V to 48 V) compared to TPS61196-Q1 (vs TPS61196-Q1)
- Same package and pinout as LP8865C-Q1 (vs LP8865C-Q1)
Design Notes
Place the boost inductor and input/output capacitors as close to the LP8860-Q1 as possible to minimize parasitic inductance and ensure stable operation. Use a solid ground plane and adequate copper area for thermal dissipation. According to the TI datasheet, proper layout is critical for achieving the low-EMI performance and preventing switching noise from affecting other circuits.
The LP8860-Q1 can dissipate significant power when driving high LED currents. Ensure the PCB has sufficient copper area and thermal vias to keep the junction temperature within the specified range. The TSENSE pin can be used for thermal derating to protect the device. According to the TI datasheet, the thermal performance depends on the PCB layout and ambient temperature.
When setting the LED current with the ISET resistor, ensure the resistor value is calculated correctly for the desired current. Incorrect values can lead to overcurrent or undercurrent conditions. Also, verify that the boost converter's output voltage is sufficient for the LED string forward voltage, especially when using a wide input voltage range. According to the TI datasheet, the adaptive output voltage control helps, but the designer must ensure adequate headroom.
Compliance Information
AEC-Q100 qualified per TI datasheet. RoHS compliant per TI product page.
