PMIC - LED Drivers

Image Part Number Description / PDF Quantity Rfq
MAX1985ETP

MAX1985ETP

Analog Devices, Inc.

HIGH-EFFICIENCY WHITE LED DRIVER

296

LT3474EFE#PBF

LT3474EFE#PBF

Analog Devices, Inc.

IC LED DRVR RGLTR DIM 1A 16TSSOP

9683

LT3932EUFD#PBF

LT3932EUFD#PBF

Analog Devices, Inc.

IC LED DRIVER SYNC 40V 2A 28 QFN

316

LT3519EMS-1#TRPBF

LT3519EMS-1#TRPBF

Analog Devices, Inc.

IC LED DRIVER RGLTR DIM 16MSOP

0

LTC3209EUF-1#PBF

LTC3209EUF-1#PBF

Analog Devices, Inc.

IC LED DRIVER RGLTR DIM 20QFN

83

LT3932HUFD-1#PBF

LT3932HUFD-1#PBF

Analog Devices, Inc.

40V, 2A MONOLITHIC SYNCHRONOUS S

0

MAX1573EBE-T

MAX1573EBE-T

Analog Devices, Inc.

WHITE LED 1X/1.5X CHARGE PUMP

30000

LTC3215EDD#TRPBF

LTC3215EDD#TRPBF

Analog Devices, Inc.

IC LED DRIVER RGLTR 700MA 10DFN

0

LT3478EFE#PBF

LT3478EFE#PBF

Analog Devices, Inc.

IC LED DRIVER RGLTR DIM 16TSSOP

951

LT3595AEUHH#PBF

LT3595AEUHH#PBF

Analog Devices, Inc.

IC LED DRVR RGLTR DIM 50MA 56QFN

7

LT3596IUHG#TRPBF

LT3596IUHG#TRPBF

Analog Devices, Inc.

IC LED DRIVER RGLTR DIM 52QFN

0

LT3755IMSE-1#TRPBF

LT3755IMSE-1#TRPBF

Analog Devices, Inc.

IC LED DRIVER CTRLR DIM 16MSOP

0

LT3496IUFD#TRPBF

LT3496IUFD#TRPBF

Analog Devices, Inc.

IC LED DRIVER RGLTR DIM 1A 28QFN

0

MAX1985ETP+

MAX1985ETP+

Analog Devices, Inc.

LED DRIVER

5332

LT3598IFE#TRPBF

LT3598IFE#TRPBF

Analog Devices, Inc.

IC LED DRIVER RGLTR DIM 24TSSOP

2979

LT3760EFE#TRPBF

LT3760EFE#TRPBF

Analog Devices, Inc.

IC LED DRIVER CTRLR DIM 28TSSOP

432

LT3755IUD-1#PBF

LT3755IUD-1#PBF

Analog Devices, Inc.

IC LED DRIVER CTRLR DIM 16QFN

117

LT8391AHUFD#PBF

LT8391AHUFD#PBF

Analog Devices, Inc.

60V SYNCHRONOUS 4-SWITCH BUCK-BO

24

LT3966EUJ#PBF

LT3966EUJ#PBF

Analog Devices, Inc.

60VIN, 1.5A/60V POWER SWITCH QUA

42

MAX6966AEE

MAX6966AEE

Analog Devices, Inc.

MAX6966 10-PORT LED DRIVER

161

PMIC - LED Drivers

1. Overview

Power Management Integrated Circuits (PMICs) with LED Driver functionality are specialized semiconductor devices designed to regulate and control light-emitting diodes (LEDs) in various applications. These drivers provide precise current control, dimming capabilities, and protection features to ensure optimal LED performance. Their importance in modern technology stems from the widespread adoption of LEDs in energy-efficient lighting, display backlights, and automotive systems due to their compact size, long lifespan, and low power consumption.

2. Main Types and Functional Classification

Type Functional Features Application Examples
Constant Current (CC) Drivers Maintain stable output current regardless of voltage variations LED street lighting, industrial lighting systems
Constant Voltage (CV) Drivers Regulate output voltage with current limiting protection LED strips, architectural lighting
Multi-channel Drivers Independent control of multiple LED strings with synchronization RGB lighting, automotive ambient lighting
Dimming-capable Drivers Support PWM or analog dimming with wide adjustment range Smartphone displays, TV backlighting

3. Structure and Components

Typical PMIC LED Driver structure includes: - Semiconductor die with CMOS/Bipolar processes - Power MOSFETs for current regulation - Precision reference voltage circuits - Protection modules (OVP, OCP, OTP) - Control logic for dimming interfaces - Thermal management substrate Packaged in QFN, TSSOP, or WLCSP formats with 16-48 pins depending on channel count and power rating.

4. Key Technical Specifications

Parameter Description Importance
Input Voltage Range 4.5V to 40V typical operating range Determines compatibility with power sources
Output Current Accuracy 2-5% regulation tolerance Affects LED brightness consistency
Dimming Ratio 1000:1 (PWM) or 20:1 (analog) Defines brightness control resolution
Efficiency 85-95% typical buck converter efficiency Impacts thermal performance and battery life
Switching Frequency 200kHz-2MHz adjustable range Affects EMI and component size

5. Application Areas

Major industries utilizing PMIC LED drivers include: - Consumer Electronics: Smartphones, tablets, TVs - Automotive: Headlights, interior lighting, display backlighting - Industrial: Factory automation lighting, emergency lighting - Medical: Surgical lighting, diagnostic equipment displays - Smart Home: IoT-enabled lighting systems

6. Leading Manufacturers and Products

Manufacturer Product Family Key Features
Texas Instruments TLC59xx series 16-channel PWM control, 12-bit brightness adjustment
STMicroelectronics LED81XX series Automotive-grade, ASIL-B safety compliance
ON Semiconductor Cat4xxx series Low EMI spread spectrum technology
Infineon Technologies IMC108 series Integrated power MOSFETs, 3A per channel

7. Selection Guidelines

Key selection criteria: - Required output current/voltage specifications - Dimming method compatibility (PWM vs analog) - Number of independent channels needed - Package thermal performance requirements - Protection features (IP rating, fault reporting) - Compliance with industry standards (AEC-Q automotive grade) - Cost vs integration level trade-offs

8. Industry Trends

Emerging trends include: - Integration with wireless control (Bluetooth/Zigbee) - Higher integration with MCU cores on single die - Adaptive dimming using AI algorithms - Increased adoption of GaN transistors for higher efficiency - Miniaturization for wearable device applications - Enhanced thermal management solutions for automotive use cases

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