PMIC - Power Management

PMIC - Power Management - Specialized

Part Number	Description / PDF	Quantity
MAX17079GTL+ Maxim Integrated	IC PWR SUPPLY TFT LCD 40QFN	200
MAX4810CTN+ Maxim Integrated	IC DIGITAL PULSER DL 56TQFN	3
MAX16929BGUI/V+T Maxim Integrated	IC TFT-LCD PWR SUPPLY 28TSSOP	0
MAX16946GTE/V+ Maxim Integrated	IC REG LDO/SWITCH ADJ 16TQFN	0
MAX16969BGEE/V+T Maxim Integrated	IC USB2.0 PROTECT 500MA-3A QSOP	42500
MAX847EEI+ Maxim Integrated	IC PWR SUPPLY 28QSOP	0
MAX16946GEE/V+ Maxim Integrated	IC REG LDO/SWITCH ADJ 16QSOP	73
MAX17000AETG+T Maxim Integrated	IC PWM CTLR DDR/DDR2/DDR3 24TQFN	2437
MAX749CSA+ Maxim Integrated	IC LCD BIAS SUPPLY DGT ADJ 8SOIC	5484200
MAX1931EUB+T Maxim Integrated	IC SW CUR LIMIT USB 10-UMAX	0
MAX20012BATJH/VY+ Maxim Integrated	TWO-OUTPUT BUCK CONTROLLER FOR A	960
MAX16928AGUP/V+T Maxim Integrated	IC TFT-LCD PWR SUPPLY 20TSSOP	80000
MAX16913GEE+T Maxim Integrated	IC CURRENT SENSE SWITCH 16-QSOP	0
MAX8664AEEP+ Maxim Integrated	IC CNTRLR DUAL OUT 20-QSOP	15942200
MAX17561AUD+ Maxim Integrated	IC OVERVOLTAGE PROTECTOR 14TSSOP	3354800
MAX20070BGTJA/V+ Maxim Integrated	IC TFT-LED PWR SUPPLY TQFN	2880
MAX16922ATPJ/V+ Maxim Integrated	IC DCDC CONV STPDN DL LDO 20TQFN	0
MAX17523ATE+ Maxim Integrated	IC ADJ OVER V/I PROTC 16TQFN	212
MAX16970AGEEB/V+ Maxim Integrated	AUTOMOTIVE USB PROTECTOR WITH CD	0
MAX17526AATP+T Maxim Integrated	60V 6A ADJ OVP + OCP PROTECTION	0

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