PMIC - Power Management

PMIC - Power Management - Specialized

Part Number	Description / PDF	Quantity
MAX14721ATP+ Maxim Integrated	IC CURRENT LIMIT ADJ 20TQFN	0
PM6670STR STMicroelectronics	IC CTLR DDR2/3 MEM PS 24VFQFPN	13758
TPS659119HAIPFPRQ1 Texas Instruments	TPS659119-Q1 AUTOMOTIVE 1.4V TO	7000
MC34PF8100CFEP NXP Semiconductors	IC POWER MANAGEMENT I.MX8QXP	0
MC33PF3000A0ESR2 NXP Semiconductors	POWER MANAGEMENT IC I.MX7 PRE-	0
TDA4916GG IR (Infineon Technologies)	SWITCHING CONTROLLER	2167
LT3751IUFD#PBF Analog Devices, Inc.	IC CTRLR CAP CHRGR 4.75V 20-QFN	10
MAX4946ELA+	BUFFER/INVERTER BASED PERIPHERAL	11221
FAN7319M	LIQUID CRYSTAL DRIVER, 4-SEGMENT	6715
MC34910G5AC Freescale Semiconductor, Inc. (NXP Semiconductors)	SYSTEM BASIS CHIP, LIN, 1X 5.0V/	12000
TPS65161PWPR Texas Instruments	TPS65161 4-CH LCD BIAS (2.8A MIN	15682
TPS65921BZQZ Texas Instruments	POWER SUPPLY SUPPORT CIRCUIT, FI	1617
DRV591VFPR Texas Instruments	DRV591 HIGH-EFFICIENCY PWM POWER	40121
MC33PF8200ETES NXP Semiconductors	IC POWER MANAGEMENT I.MX8QM	0
LTC3566EUF-2#TRPBF Analog Devices, Inc.	IC POWER MANAGER USB 24-QFN	0
MAX6762TAZID0+T Analog Devices, Inc.	POWER SUPPLY SUPPORT CIRCUIT, AD	2500
MAX16128UAACAC+T Maxim Integrated	IC LOAD DUMP REV V PROT 8UMAX	20000
LT3420EDD#PBF Analog Devices, Inc.	IC PHOTOFLASH CAP CHARGER 10-DFN	536
MAX714CWE Analog Devices, Inc.	MAX714 BATTERY-POWERED SUPPLY SY	26
MAX17113ETL+ Maxim Integrated	IC PWR SUPPLY FOR LCD TV 40TQFN	297

PMIC - Power Management - Specialized

1. Overview

Specialized Power Management ICs (PMICs) are application-specific integrated circuits designed to optimize power distribution and management in electronic systems. These devices provide tailored solutions for voltage regulation, battery management, power sequencing, and energy efficiency optimization. Their importance in modern technology lies in enabling compact designs, reducing power consumption, and improving reliability for applications ranging from mobile devices to automotive systems.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Battery PMICs	Integrate battery charging, fuel gauging, and protection circuits	Smartphones, wearable devices
DC-DC Controllers	Regulate voltage conversion with external MOSFETs	High-performance computing (HPC) systems
AC-DC Controllers	Convert AC to DC with power factor correction (PFC)	Server power supplies, industrial equipment
LED Drivers	Provide constant current for LED arrays	Automotive lighting, display backlighting
Multi-Channel PMICs	Support multiple regulated outputs with sequencing	Medical imaging equipment, IoT gateways

3. Structure and Components

Typical physical structure includes:

QFN/BGA packages for compact PCB integration
Internal blocks: Voltage regulators (LDOs, DC-DC converters), ADC/DAC modules, I2C/SPI interfaces
Protection circuits: Overcurrent (OCP), Overvoltage (OVP), Thermal shutdown (OTP)

4. Key Technical Specifications

Parameter	Importance
Input Voltage Range	Determines compatibility with power sources (e.g., 2.7V-24V for battery systems)
Output Current Capability	Defines maximum load support (e.g., 0.5A-10A per channel)
Efficiency (Typical >90%)	Impacts thermal performance and battery life
Quiescent Current	Crucial for low-power standby modes (<10 A typical)
Protection Features	Ensures reliability under fault conditions
Operating Temperature	Industrial (-40 C to +125 C) or automotive (-40 C to +150 C) grades

5. Application Areas

Consumer Electronics: Mobile phones, tablets, AR/VR headsets
Automotive: ADAS systems, electric vehicle (EV) battery management
Industrial: PLC systems, robotics actuators
Healthcare: Portable diagnostic devices, MRI gradient coil drivers
IoT: Edge sensors, smart meters

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Texas Instruments	TPS65912	6-channel PMIC for AMOLED displays
STMicroelectronics	STM32L4 Series PMIC	Ultra-low-power with dynamic voltage scaling
ON Semiconductor	NCP185x	High-current battery charger with JEITA compliance
Analog Devices	LTC297x	Digital power system management (PSM) IC
Infineon	PSoC 6 PMIC	Integrated with microcontroller for IoT applications

7. Selection Guidelines

Define system power rails and sequencing requirements
Match input voltage range with source characteristics (battery, AC adapter, etc.)
Evaluate thermal performance under maximum load
Prioritize protection features for critical applications
Consider digital monitoring capabilities for smart systems

8. Industry Trends

Key trends shaping PMIC development:

Integration of wide-bandgap (SiC/GaN) drivers in power stages
AI-enabled dynamic power optimization for edge computing
48V direct-to-load architectures for data centers
Functional safety compliance (ISO 26262) for automotive systems
Sub-1 A leakage current management for battery-free IoT devices