LP8867-Q1 Highly-integrated 4-channel 120-mA automotive LED driver

Description

The LP8867-Q1, LP8869-Q1 is an automotive highly-integrated, low-EMI, easy-to-use LED driver with DC-DC converter. The DC-DC converter supports both boost and SEPIC mode operation. The device has four or three high-precision current sinks that can be combined for higher current capability.

The DC-DC converter has adaptive output voltage control based on the LED forward voltages. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. For EMI reduction DC-DC supports spread spectrum for switching frequency and an external synchronization with dedicated pin. A wide-range adjustable frequency allows the LP886x-Q1 to avoid disturbance for sensitive frequency band.

The input voltage range for the LP886x-Q1 is from 4.5 V to 40 V to support automotive start-stop and load dump condition. The LP886x-Q1 integrates extensive fault detection features.

Features

AEC-Q100 Qualified for automotive applications:
- Device temperature grade 1:
  –40°C to +125°C, T_A
3-, 4-Channel 120-mA current sinks
- High dimming ratio of 10 000:1 at 100 Hz
- Current matching 1% (typical)
- LED String current up to 120 mA per channel
- Outputs can be combined externally for higher current per string
Integrated boost and SEPIC converter for LED string power
- Input voltage operating range 4.5 V to 40 V
- Output voltage up to 45 V
- Integrated 3.3-A Switch FET
- Switching frequency 300 kHz to 2.2 MHz
- Switching synchronization input
- Spread spectrum for lower EMI
Fault detection and protection
- Fault output
- Input voltage OVP, UVLO and OCP
- Boost block SW OVP and output OVP
- LED open and short fault detection
- Power-Line FET control for battery bus protection
- Automatic LED current reduction with external temperature sensor
- Thermal shutdown

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Part number	Order	Topology	Channels (#)	Vin (Min) (V)	Vin (Max) (V)	Vout (Min) (V)	Vout (Max) (V)	Iout (Max) (A)	Iq (Typ) (mA)	LED current per channel (mA)	Switching frequency (Max) (kHz)	Operating temperature range (C)	Features	Applications	Package Group	Package size: mm2:W x L (PKG)	Rating
LP8867-Q1	Order now	Boost with Current Sink	4	4.5	40	6	45	0.12	4.5	0.12	2200	-40 to 125	Enable/Shutdown Fault Detection Fault Diagnostic Integrated Switch Power-Line FET Precision Dimming Control Spread Spectrum Thermal Shutdown	Backlight	HTSSOP \| 20	20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP \| 20)	Automotive
LP8860-Q1	Order now	Boost Controller	4	3	48	2	48	0.6	2.5	150	2200	-40 to 125	Adjustable Switch Frequency Boost Sync Fault Diagnostic Hybrid Dimming/Phase Shift I2C Control Spread Spectrum	Backlight Dome Foot Well	HLQFP \| 32	32HLQFP: 81 mm2: 9 x 9 (HLQFP \| 32)	Automotive
LP8861-Q1	Order now	Boost Sepic	4	4.5	40	7	40	0.4	5	100	2200	-40 to 125	Adjustable Switch Frequency Boost Sync Fault Detection Power-Line FET Sepic Sync Spread Spectrum Temperature Compensation	Backlight Dome Foot Well	HTSSOP \| 20	20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP \| 20)	Automotive
LP8862-Q1	Order now	Boost Sepic	2	4.5	40	6	45	0.16	5	160	2200	-40 to 125	Adjustable Switch Frequency Boost Sync Fault Detection Power-Line FET Sepic Sync Spread Spectrum	Backlight	HTSSOP \| 20	20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP \| 20)	Automotive
LP8863-Q1	Order now	Boost Controller Sepic Controller	6	3	48	7	48	0.9	15	150	2200	-40 to 125	Adjustable Switch Frequency Boost Sync Enable/Shutdown Fault Diagnostic Hybrid Dimming/Phase Shift I2C Control Power-Line FET Precision Dimming Control Soft Start Spread Spectrum	Backlight	HTSSOP \| 38

LP8867-Q1 ACTIVE This product has been released to the market and is available for purchase. For some products, newer alternatives may be available. Highly-integrated 4-channel 120-mA automotive LED driver

Description

Features

Parametrics

LP8867-Q1
ACTIVE

This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Highly-integrated 4-channel 120-mA automotive LED driver