PMIC - Voltage Regulators - Special Purpose

Part Number	Description / PDF	Quantity
TPS65296RJER Texas Instruments	IC POWER MANAGEMENT	3162
TPS54372PWPRG4 Texas Instruments	IC REG CONV DDR 1OUT 20HTSSOP	0
LP8725TLE-D/NOPB Texas Instruments	IC REG CTRLR/CONV 9OUT 30DSBGA	250
TPS62730DRYT Texas Instruments	IC REG CONV BLUETOOTH 1OUT 6SON	0
TPS51020DBTR Texas Instruments	IC REG CTRLR DDR 2OUT 30TSSOP	1014
TPS53679RSBR Texas Instruments	IC REG CTRLR VR13 2OUT 40WQFN	2160
TPS53659RSBT Texas Instruments	IC REG CTRLR VR13 2OUT 40WQFN	428
LP2998MA/NOPB Texas Instruments	IC REG CONV DDR 1OUT 8SOIC	5365
TPS6508640RSKR Texas Instruments	IC REG CTLR DGTL CAM 9OUT 64VQFN	0
TPS65105RGER Texas Instruments	IC REG CTRLR TFT 4OUT 24VQFN	1700
TPS5102IDBTR Texas Instruments	IC REG CTRLR NOTEBK 2OUT 30TSSOP	0
TPS65218B1PHPR Texas Instruments	POWER SUPPLY SUPPORT CIRCUIT, AD	0
TPS62733DRYR Texas Instruments	IC REG CONV BLUETOOTH 1OUT 6SON	3144
TPS53626RSMR Texas Instruments	IC REG CTRLR VR13 1OUT 32VQFN	0
TPS51211DSCR Texas Instruments	TPS51211 HIGH-PERFORMANCE, SINGL	42046
TPS65295RJET Texas Instruments	IC PWR MGMT SWITCHING REGULATOR	177
TPS54116QRTWTQ1 Texas Instruments	IC REG CONV DDR 1OUT 24WQFN	299
TPS51631ARSMT Texas Instruments	IC REG CTRLR VR12.5 1OUT 32VQFN	273
TPS65530RSLR Texas Instruments	IC REG CONV FOR DSC 8OUT 48VQFN	2200
SM72445MTE/NOPB Texas Instruments	SM72445 PROGRAMMABLE MAXIMUM POW	2250

PMIC - Voltage Regulators - Special Purpose

1. Overview

Special purpose voltage regulators are application-specific power management ICs designed to maintain precise voltage levels for specialized electronic systems. Unlike standard regulators, these devices address unique requirements such as dynamic voltage scaling, multi-rail sequencing, or high-precision reference generation. Their importance in modern technology stems from the need for optimized power delivery in advanced applications including AI accelerators, medical imaging equipment, and automotive sensor systems.

2. Major Types and Functional Classification

Type	Functional Characteristics	Application Examples
LCD Bias Regulators	Generates multiple precision voltages (VCOM, gamma) with high PSRR	Display panels, industrial HMIs
GDDR Power Solutions	Provides AVDD/VDDQ tracking with fast transient response	Graphics cards, AI accelerators
Gate Driver Supplies	Isolated voltage sources with tight tolerance for power MOSFETs	Motor controllers, solar inverters
DAC Reference Buffers	Ultra-low noise (<<1 V) with programmable output	Test equipment, precision sensors

3. Structure and Components

Typical architecture includes:

Advanced packaging (e.g., WLCSP, QFN) with dedicated power/ground pads
Internal compensation networks with frequency response optimization
Multi-stage regulation topology (e.g., LDO + charge pump)
Protection circuits (OVP, UVP, OTP) with fault reporting
Digital interface (I2C/PMBus) for configuration in programmable variants

4. Key Technical Specifications

Parameter	Importance
Output Voltage Accuracy	0.5% for precision applications, 2% for general use
Load Regulation	Must maintain <0.1% deviation across operating range
PSRR	80dB@1kHz critical for noise-sensitive analog circuits
Transient Response	Recovery time <50 s for dynamic loads
Quiescent Current	Optimizes efficiency in always-on systems

5. Application Fields

Primary industries:

Consumer Electronics: OLED displays, VR headsets
Industrial: PLC systems, precision instrumentation
Automotive: LiDAR sensors, ADAS power supplies
Medical: MRI gradient drivers, portable diagnostics

6. Leading Manufacturers and Products

Manufacturer	Key Products	Specialization
TI	TPS65130	Multi-output LCD bias supply
STMicro	LD6983	Automotive-grade gate driver supply
Analog Devices	ADP5090	Energy harvesting systems
Infineon	CYPD3171	USB-C power delivery controller

7. Selection Guidelines

Key considerations:

Match output configuration (single/multi-channel) to system requirements
Evaluate thermal performance under max load conditions
Assess compatibility with system-level power sequencing
Prioritize devices with integrated protection features

Case Study: Smartphone display subsystems typically select regulators with integrated gamma reference buffers and spread-spectrum control to minimize EMI.

8. Industry Trends

Current development directions:

Integration of digital calibration with 0.1mV resolution
Adoption of GaN/SiC compatible driver circuits
AI-enabled dynamic voltage scaling algorithms
Sub-100nm process technology for multi-rail PMICs
Enhanced safety features for ISO 26262 compliance