PMIC - Voltage Regulators - Special Purpose

Part Number	Description / PDF	Quantity
MAX5008CUB Analog Devices, Inc.	USB CHARGE PUMP	4000
S-1701S5015-U5T1G ABLIC U.S.A. Inc.	IC REG CONV BATTERY 1OUT SOT89-5	0
NCP81111MNI0TXG Sanyo Semiconductor/ON Semiconductor	IC REG CTRLR INTEL 1OUT 32QFN	0
TPS65296RJER Texas Instruments	IC POWER MANAGEMENT	3162
MAX6357TZUT+	POWER SUPPLY SUPPORT CIRCUIT	1372
HIP6006CB Intersil (Renesas Electronics America)	SWITCHING CONTROLLER	735
S-1701B3026-M5T1G ABLIC U.S.A. Inc.	IC REG CONV BATTERY 1OUT SOT23-5	0
M51953AFP#TF1J Renesas Electronics America	VOLTAGE DETECTING, SYSTEM RESETT	8336
ISL95855CHRTZ-T Intersil (Renesas Electronics America)	IC REG IMVP8 NOTEBK 3OUT 48TQFN	0
MC34717EPR2 NXP Semiconductors	IC REG CONV DDR 2OUT 26QFN	0
ISL6312AIRZ-T Intersil (Renesas Electronics America)	IC REG CTRLR VR10 1OUT 48QFN	0
BD4153FV-E2 ROHM Semiconductor	IC REG LDO W/RESET 2OUT 24SSOP	0
TPS54372PWPRG4 Texas Instruments	IC REG CONV DDR 1OUT 20HTSSOP	0
S-1701C5041-U5T1G ABLIC U.S.A. Inc.	IC REG CONV BATTERY 1OUT SOT89-5	0
FAN5234MTCX	SWITCHING CONTROLLER, CURRENT-MO	0
ISL62882HRTZ Intersil (Renesas Electronics America)	IC REG CTRL IMVP-6.5 1OUT 40TQFN	0
LP8725TLE-D/NOPB Texas Instruments	IC REG CTRLR/CONV 9OUT 30DSBGA	250
ISL6444CA Intersil (Renesas Electronics America)	DUAL SWITCHING CONTROLLER	986
LT8697EUDD#PBF Analog Devices, Inc.	IC REG CONV USB 1OUT 24QFN	511
LT1184FIS#PBF Analog Devices, Inc.	IC REG CONV CCFL 1OUT 16SOIC	0

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