| Brand | Texas Instruments |
| Date Code | 2235 |
| Packing | Reel |
| Package | HTSSOP-20 |
| Minimum Packing | 2000pcs |
Low-EMI high-performance 4-channel LED driver for Automotive lighting
Features：
Quality information
|
RatingAutomotive |
|
RoHSYes |
|
REACHYes |
|
Lead finish / Ball materialNiPdAu |
|
MSL rating / Peak reflowLevel-2-260C-1 YEAR |
Packaging information
|
Package | PinsHTSSOP (PWP) | 20 |
|
Operating temperature range (°C)-40 to 125 |
|
Package qty | Carrier2,000 | LARGE T&R |
Features for the LP8861-Q1
Qualified for Automotive Applications
AECQ100 Qualified With the Following Results:
Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
Input Voltage Operating Range 4.5 V to 40 V
Four High-Precision Current Sinks
Current Matching 1% (Typical)
LED String Current up to 100 mA/Channel
Dimming Ratio of 10 000:1 at 100 Hz
Integrated Boost/SEPIC Converter for LED String Power
Output Voltage up to 45 V
Switching Frequency 300 kHz to 2.2 MHz
Switching Synchronization Input
Spread Spectrum for Lower EMI
Power-Line FET Control for Inrush Current Protection and Standby Energy Saving
Extensive Fault Detection and Tolerance Features
Fault Output
Input Voltage OVP, UVLO, and OCP
Open and Shorted LED Fault Detection
Automatic LED Current Reduction With External Temperature Sensor
Thermal Shutdown
Minimum Number of External Components
Description for the LP8861-Q1
The LP8861-Q1 is an automotive high-efficiency, low-EMI, easy-to-use LED driver with integrated boost/SEPIC converter. It has four high-precision current sinks that can provide high dimming ratio brightness control with a PWM input signal.
The boost/SEPIC converter has adaptive output voltage control based on the LED current sink headroom voltages. This feature minimizes the power consumption by adjusting the voltage to lowest sufficient level in all conditions. The boost/SEPIC converter supports spread spectrum for switching frequency and an external synchronization with dedicated pin. A wide-range adjustable frequency allows the LP8861-Q1 to avoid disturbance for AM radio band.
The LP8861-Q1 has an option to drive an external p-FET to disconnect the input supply from the system in the event of a fault and reduce inrush current and standby power consumption. The device can reduce LED current based on temperature measured with external NTC sensor to protect LED from overheating and extend LED lifetime.
The input voltage range for the LP8861-Q1 is from 4.5 V to 40 V to support automotive stop/start and load dump condition. The LP8861-Q1 integrates extensive fault detection and protection features.
