PMIC - Voltage Regulators - Special Purpose

Part Number	Description / PDF	Quantity
MIC9131YM-TR Roving Networks / Microchip Technology	IC REG CTRLR TELECOM 1OUT 16SOIC	0
MIC9131YM Roving Networks / Microchip Technology	IC REG CTRLR TELECOM 1OUT 16SOIC	69
MIC5164YMM-TR Roving Networks / Microchip Technology	IC REG CTRLR DDR3 1OUT 10MSOP	0
MIC9130YM-TR Roving Networks / Microchip Technology	IC REG CTRLR TELECOM 1OUT 16SOIC	0
MIC9130BM Roving Networks / Microchip Technology	TELECOM DC-TO-DC CONTROLLER	53048
MIC5165YMM Roving Networks / Microchip Technology	IC REG CTRLR DDR3 1OUT 10MSOP	0
MIC9130YQS-TR Roving Networks / Microchip Technology	IC REG CTRLR TELECOM 1OUT 16QSOP	0
MIC5165YMM-TR Roving Networks / Microchip Technology	IC REG CTRLR DDR3 1OUT 10MSOP	0
MIC5164YMM Roving Networks / Microchip Technology	IC REG CTRLR DDR3 1OUT 10MSOP	0
MIC29512WT Roving Networks / Microchip Technology	IC REG CONV INTEL 1OUT TO220-5	0
MIC4043YM4-TR Roving Networks / Microchip Technology	IC REG CONV PWR SUP 1OUT SOT143	0
MIC5162BMM Roving Networks / Microchip Technology	DUAL REG FOR H/S BUS TERMINATION	551
MCP1623-I/MC Roving Networks / Microchip Technology	IC REG PIC MICROCTRLR 1OUT 8DFN	0
MCP1624-I/MC Roving Networks / Microchip Technology	IC REG PIC MICROCTRLR 1OUT 8DFN	970
MIC9130YQS Roving Networks / Microchip Technology	HIGH-VOLTAGE, HIGH-SPEED TELECOM	2572
MIC29712WT Roving Networks / Microchip Technology	IC REG CONV INTEL 1OUT TO220-5	67
MIC9130YM Roving Networks / Microchip Technology	IC REG CTRLR TELECOM 1OUT 16SOIC	167
MCP1623T-I/MC Roving Networks / Microchip Technology	IC REG PIC MICROCTRLR 1OUT 8DFN	6042
MIC5162YMM-TR Roving Networks / Microchip Technology	IC REG CTRLR DDR3 1OUT 10MSOP	1900
MIC29510-5.0BT Roving Networks / Microchip Technology	5A FAST-RESPONSE LDO REGULATOR	2423

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