PMIC - Display Drivers

Image	Part Number	Description / PDF	Quantity	Rfq
	AS1118-BQFT ams	IC DRVR 64 LED 7SEG 8 DGT 24TQFN	0
	CD4056BNSR Texas Instruments	IC DRVR 7 SEGMENT 1 DIGIT 16SO	0
	LM2439T/NOPB Texas Instruments	IC DRVR MONOLITHIC TO220-9	0
	LM2438T Texas Instruments	IC DRVR MONOLITHIC TO220-9	0
	AS1100WE ams	IC DRVR 7 SEGMNT 8 DIGIT 24SOIC	0
	AN8001FHK-V Panasonic	IC LCD DRVR VOLTAGE 48TQFP	0
	ICL7136CQH-D Maxim Integrated	IC DRVR 7 SEG 3 1/2 DIGIT 44PLCC	0
	AS1120 ams	IC DRVR 46 SEGMENT 64LQFP	0
	ICM7212AMIQH-D Maxim Integrated	IC DRVR 7 SEGMNT 4 DIGIT 44PLCC	0
	ICM7244AIM44ZT Intersil (Renesas Electronics America)	IC DRVR 16 SEGMENTS 44MQFP	0
	CD4055BPWR Texas Instruments	IC DRVR 7 SEGMNT 1 DIGIT 16TSSOP	0
	TC7117RCPL Roving Networks / Microchip Technology	IC DRVR 7 SEG 3 1/2 DIGIT 40DIP	0
	PCF8576CH/1,157 NXP Semiconductors	IC DRVR 7 SEGMENT 64LQFP	0
	CD4054BPWRG4 Texas Instruments	IC DRVR 4 SEGMENT 16TSSOP	0
	PCF8579T/1,112 NXP Semiconductors	IC DRVR DOT MATRIX 56VSOP	0
	BU9799KV-BZE2 ROHM Semiconductor	IC DRVR 200 SEGMENT 64VQFP	0
	LC749402PT-H Sanyo Semiconductor/ON Semiconductor	IC DRVR PICT IMPROVEMENT 100TQFP	0
	MAX754ESE+ Maxim Integrated	IC DRVR CNTRLR CONTRAST 16SOIC	0
	LC749880T-E Sanyo Semiconductor/ON Semiconductor	IC DRVR IMAGE CTLR 120TQFP	0
	LC74731WS-9818-E Sanyo Semiconductor/ON Semiconductor	IC DRVR DISPLAY CTRL 64SQFP	0

PMIC - Display Drivers

1. Overview

Power Management ICs (PMICs) for Display Drivers are specialized integrated circuits designed to manage power delivery and control signals for display technologies. They optimize power efficiency, brightness control, color accuracy, and timing synchronization for displays. These ICs are critical in modern devices such as smartphones, tablets, automotive displays, and industrial equipment, where energy efficiency and visual performance are paramount.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
LCD Segment/Segmented Drivers	Support segmented LCD panels with low-voltage biasing and multiplexing	Watches, calculators, industrial meters
OLED Panel Drivers	Provide precise current control for organic light-emitting diodes	Smartphones, wearables, VR headsets
LED Backlight Drivers	Regulate current for LCD backlighting using PWM or analog dimming	Laptops, TVs, automotive infotainment
ePaper Display Drivers	Optimize voltage waveforms for bistable electrophoretic displays	E-readers, electronic shelf labels
Integrated PMIC-Display Combos	Combine power management with display timing/controllers	Tablets, automotive cluster displays

3. Structure and Composition

PMIC Display Drivers typically include:

Power Conversion Circuits: DC-DC converters (boost/buck) or charge pumps for voltage regulation
Current Sources: Precision-controlled sinks/sources for pixel activation
Timing Controllers: Generate gate/source driving signals synchronized with input video
Interface Modules: I2C, SPI, or MIPI DSI for communication with host processors
Protection Circuits: Overcurrent, overtemperature, and short-circuit safeguards

Common packaging: QFN, BGA, or WLCSP with 40-200 pins depending on integration level.

4. Key Technical Specifications

Parameter	Description	Importance
Output Current Range	Maximum current per channel (10 A 100mA)	Determines display brightness capability
Voltage Accuracy	Regulation tolerance ( 1% 5%)	Impacts image stability and flicker reduction
Dimming Resolution	PWM frequency and bit depth (8 16 bits)	Enables fine brightness adjustments
Power Efficiency	Conversion efficiency (70% 95%)	Extends battery life in portable devices
Operating Temperature	Range (-40 C to +125 C)	Ensures reliability in harsh environments

5. Application Areas

Consumer Electronics: Smartphones (OLED drivers), tablets (integrated PMICs)
Automotive: Instrument clusters (TFT-LCD drivers), HUDs (LED backlight controllers)
Medical Devices: Diagnostic displays (high-accuracy OLED drivers)
Industrial: HMI panels (segmented LCD drivers with ruggedization)
AR/VR: Microdisplay drivers with high refresh rates

6. Key Manufacturers and Representative Products

Manufacturer	Product Series	Key Features
Texas Instruments	LM3630A	18-channel WLED driver with 16-bit PWM dimming
STMicroelectronics	STLD40	40V automotive LED driver with fault diagnostics
Renesas Electronics	R2R46	ePaper display driver with on-chip waveform ROM
Analog Devices	AD5522	LCD segment driver for industrial test equipment
Novatek Microelectronics	NT51021	Integrated TDDI PMIC for mobile OLED panels

7. Selection Guidelines

Key considerations:

Display Type: Match IC to LCD/OLED/ePaper requirements
Power Requirements: Calculate total current/voltage needs
Interface Compatibility: Verify processor interface (MIPI vs. SPI)
Thermal Management: Check thermal resistance ratings for high-load scenarios
Cost vs. Integration: Balance discrete drivers vs. all-in-one PMIC solutions

Example: For a 6.1" smartphone OLED display, select an IC like Novatek NT51021 with integrated gate control and >90% efficiency.

8. Industry Trends

Future developments include:

Mini/Micro-LED Support: Drivers for high-density emissive displays
AI Integration: On-chip algorithms for dynamic power optimization
Higher Integration: PMICs combining display, touchscreen, and sensor control
Energy Harvesting: Self-powered driver architectures
0.1 A Standby Current: Ultra-low quiescent current for always-on displays

Market growth driven by automotive displays (CAGR 12.3% 2023 2030) and AR/VR adoption.