PMIC - Power Management

PMIC - Power Management - Specialized

Part Number	Description / PDF	Quantity
MAX8664AEEP+T Maxim Integrated	IC CNTRLR DUAL OUT 20-QSOP	0
MAX8660ETL/V+T Maxim Integrated	IC POWER MGMT XSCALE 48WQFN	2500
MAX20310AEWE+ Maxim Integrated	IC PMIC BUCK-BOOST 16WLP	283140
MAX14808ETK+ Maxim Integrated	IC MUX DUAL HV 68TQFN	583
MAX20046GTC/V+ Maxim Integrated	50/100MA USB SWITCH LOW-CURRENT	300
MAX14672ETB+T Maxim Integrated	BIDIRECTIONAL OVERVOLTAGE PROTEC	0
MAX16127TC/V+T Maxim Integrated	LOAD-DUMP/REVERSE-VOLTAGE PROTEC	27500
MAX16969DGEE/V+T Maxim Integrated	IC USB2.0 PROTECT 500MA-3A QSOP	0
MAX8660AETL+T Maxim Integrated	IC POWER MANAGE XSCALE 40-TQFN	0
MAX17563AUD+ Maxim Integrated	IC OVERVOLTAGE PROTECTOR 14TSSOP	1344
MAX20046GTCA/V+T Maxim Integrated	AUTOMOTIVE HI-SPEED USB 2.0 PROT	17500
MAX17062ETB+T Maxim Integrated	IC TFT-LCD DC/DC CONV 10-TDFN	392015000
MAX5040EUB+ Maxim Integrated	IC CNTRLR VOLT TRACK 10-UMAX	1650
MAX17563AUD+T Maxim Integrated	IC OVERVOLTAGE PROTECTOR 14TSSOP	0
MAX845EUA+ Maxim Integrated	IC DRVR XFRMR CMOS PCMCIA 8UMAX	840
MAX16929DGUI/V+ Maxim Integrated	IC TFT-LCD PWR SUPPLY 28TSSOP	300
MAX16922ATPK/V+ Maxim Integrated	IC DCDC CONV STPDN DL LDO 20TQFN	240
MAX16929IGUI/V+T Maxim Integrated	IC TFT-LCD PWR SUPPLY 28TSSOP	2500
MAX16929BGUI/V+ Maxim Integrated	IC TFT-LCD PWR SUPPLY 28TSSOP	0
MAX20310BEWE+T Maxim Integrated	LOW VOLT PRIMARY CELL PWR MNGMT	5000

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