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LP8869CQPWPRQ1

Highly-integrated 3-channel 120-mA automotive LED driver

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

LP8869CQPWPRQ1
Datasheet:

LP8869CQPWPRQ1 Datasheet (PDF)
Number of channels:

3
Topology:

Boost with Current Sink, SEPIC
Rating:

Automotive
Operating temperature range (°C):

-40 to 125
EDA/CAD Models:

Request Free CAD Models for LP8869CQPWPRQ1

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LP8869CQPWPRQ1 General Description

The LP8867C-Q1, LP8869C-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 LP886xC-Q1 to avoid disturbance for sensitive frequency band.

The input voltage range for the LP886xC-Q1 is from 4.5 V to 40 V to support automotive stop, start and load dump condition. The LP886xC-Q1 integrates extensive fault detection features.

Key Features

AEC-Q100 Qualified for automotive applications:
- Device temperature grade 1:
  –40°C to +125°C, T_A
3-, 4-Channel 120-mA LED driver for automotive LCD display
- 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
Protection and fault detection
- Fault output
- Input voltage OVP, UVLO
- Boost OVP
- SW OVP
- LED Open and short fault detection
- Thermal shutdown

Specifications

Number of channels	3	Topology	Boost with Current Sink, SEPIC
Rating	Automotive	TI functional safety category	Functional Safety-Capable
Operating temperature range (°C)	-40 to 125	Vin (min) (V)	4.5
Vin (max) (V)	40	Vout (min) (V)	6
Vout (max) (V)	45	Iout (max) (A)	0.36
Iq (typ) (mA)	4.5	Switching frequency (max) (kHz)	2200
Features	Adjustable Switch Frequency, Boost Sync, Enable/Shutdown, Fault Detection, Global dimming, Integrated Switch, LED Open Detection, LED Shorted Detection, Soft Start, Spread Spectrum, Synchronization Pin, Thermal shutdown	feature-number-of-digits
feature-number-of-segments		feature-number-of-led-outputs
feature-topology		feature-process-technology
feature-input-output-type		feature-minimum-operating-supply-voltage-v
feature-maximum-operating-supply-voltage-v		feature-output-voltage-v
feature-maximum-supply-current-ua		feature-maximum-output-current-ma
feature-maximum-power-dissipation-mw		feature-packaging	Tape and Reel
feature-rad-hard		feature-pin-count	20
feature-cecc-qualified		feature-esd-protection
feature-military	No	feature-aec-qualified	Yes
feature-aec-qualified-number	AEC-Q100	feature-auto-motive	Yes
feature-p-pap	Yes	feature-eccn-code	EAR99
feature-svhc	No	feature-svhc-exceeds-threshold	No