LP8867CQPWPRQ1
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Texas Instruments LP8867CQPWPRQ1

Manufacturer No:
LP8867CQPWPRQ1
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC LED DRVR RGLTR PWM 20HTSSOP
Delivery:
Payment:
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Product Introduction

Overview

The LP8867C-Q1 is a highly integrated, low-EMI LED driver designed for automotive applications, particularly for backlighting in infotainment systems, instrument clusters, smart mirrors, and heads-up displays (HUD). This device, produced by Texas Instruments, features a DC-DC converter that supports both boost and SEPIC modes, making it versatile for various LED string configurations. It includes 4 high-precision current sinks, each capable of driving up to 120 mA of LED current. The device is AEC-Q100 qualified, ensuring it meets stringent automotive standards, and operates over a wide temperature range from -40°C to +125°C.

Key Specifications

Parameter Value Unit
Number of LED Channels 4 -
LED Current per Channel Up to 120 mA mA
Input Voltage Range 4.5 V to 40 V V
Output Voltage Range Up to 45 V V
Switching Frequency Range 300 kHz to 2.2 MHz kHz/MHz
Package Type 20-Pin HTSSOP with Exposed Thermal Pad -
Body Size 6.50 mm × 4.40 mm mm
Temperature Range -40°C to +125°C °C
Dimming Ratio Up to 10,000:1 at 100 Hz -
Current Matching 1% (typical) %

Key Features

  • AEC-Q100 Qualified: Meets automotive standards for reliability and performance.
  • High-Precision Current Sinks: 4 channels with up to 120 mA per channel, and the ability to combine outputs for higher current.
  • Integrated DC-DC Converter: Supports both boost and SEPIC modes with adaptive output voltage control.
  • Low EMI: Features spread spectrum and external synchronization to reduce EMI noise.
  • Extensive Fault Detection: Includes LED open and short detection, input voltage OVP and UVLO, boost OVP, SW OVP, and thermal shutdown.
  • PWM Dimming Control: Supports PWM dimming with a frequency range from 100 Hz to 20 kHz.
  • Internal LDO: Enables direct connection to the battery without the need for a pre-regulated supply.

Applications

  • Automotive Infotainment Systems: Backlighting for displays in infotainment systems.
  • Automotive Instrument Clusters: Backlighting for instrument cluster displays.
  • Smart Mirrors: Backlighting for smart mirror displays.
  • Heads-Up Displays (HUD): Backlighting for HUD systems.

Q & A

  1. What is the operating temperature range of the LP8867C-Q1?

    The LP8867C-Q1 operates over a temperature range from -40°C to +125°C.

  2. How many LED channels does the LP8867C-Q1 have?

    The LP8867C-Q1 has 4 LED channels.

  3. What is the maximum LED current per channel?

    The maximum LED current per channel is up to 120 mA.

  4. What is the input voltage range of the LP8867C-Q1?

    The input voltage range is from 4.5 V to 40 V.

  5. What are the switching frequency options for the DC-DC converter?

    The switching frequency can be set between 300 kHz and 2.2 MHz.

  6. Does the LP8867C-Q1 support external synchronization for EMI reduction?
  7. What is the dimming ratio of the LP8867C-Q1 at 100 Hz?

    The dimming ratio is up to 10,000:1 at 100 Hz.

  8. What kind of fault detection does the LP8867C-Q1 include?

    The device includes LED open and short detection, input voltage OVP and UVLO, boost OVP, SW OVP, and thermal shutdown.

  9. How is the brightness controlled in the LP8867C-Q1?

    Brightness is controlled using PWM dimming with a frequency range from 100 Hz to 20 kHz.

  10. What package type is the LP8867C-Q1 available in?

    The LP8867C-Q1 is available in a 20-Pin HTSSOP package with an exposed thermal pad.

Product Attributes

Type:DC DC Regulator
Topology:SEPIC, Step-Up (Boost)
Internal Switch(s):Yes
Number of Outputs:3
Voltage - Supply (Min):4.5V
Voltage - Supply (Max):45V
Voltage - Output:6V ~ 45V
Current - Output / Channel:120mA
Frequency:300kHz ~ 2.2MHz
Dimming:PWM
Applications:Automotive, Backlight
Operating Temperature:-40°C ~ 125°C (TA)
Mounting Type:Surface Mount
Package / Case:20-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package:20-HTSSOP
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Similar Products

Part Number LP8867CQPWPRQ1 LP8869CQPWPRQ1 LP8867QPWPRQ1
Manufacturer Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active
Type DC DC Regulator DC DC Regulator DC DC Regulator
Topology SEPIC, Step-Up (Boost) SEPIC, Step-Up (Boost) SEPIC, Step-Up (Boost)
Internal Switch(s) Yes Yes Yes
Number of Outputs 3 3 3
Voltage - Supply (Min) 4.5V 4.5V 4.5V
Voltage - Supply (Max) 45V 45V 45V
Voltage - Output 6V ~ 45V 6V ~ 45V 6V ~ 45V
Current - Output / Channel 120mA 120mA 120mA
Frequency 300kHz ~ 2.2MHz 300kHz ~ 2.2MHz 300kHz ~ 2.2MHz
Dimming PWM PWM PWM
Applications Automotive, Backlight Automotive, Backlight Automotive, Backlight
Operating Temperature -40°C ~ 125°C (TA) -40°C ~ 125°C (TA) -40°C ~ 125°C (TA)
Mounting Type Surface Mount Surface Mount Surface Mount
Package / Case 20-PowerTSSOP (0.173", 4.40mm Width) 20-PowerTSSOP (0.173", 4.40mm Width) 20-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package 20-HTSSOP 20-HTSSOP 20-HTSSOP

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