PMIC - Power Management

PMIC - Power Management - Specialized

Part Number	Description / PDF	Quantity
MAX1579ETG+ Maxim Integrated	IC PS BIAS/WHITE LED TFT 24-TQFN	3525
MAX8819CETI+ Maxim Integrated	IC PMIC W/INT CHARGER 28TQFN	362325
MAX20310EEWE+T Maxim Integrated	LOW VOLT PRIMARY CELL PWR MNGMT	27500
MAX16928CGUP/V+ Maxim Integrated	IC TFT-LCD PWR SUPPLY 20TSSOP	3151480
MAX16922ATPO/V+ Maxim Integrated	2.2MHZ DUAL STEP-DOWN DC-DC CONV	0
MAX16924GTM/V+T Maxim Integrated	TRANSLATOR LL 16CH TFT AUTO TQFN	0
MAX77654AENV+T Maxim Integrated	ULTRA LOW POWER PMIC W/ 3-OUTPUT	5000
MAX20323CENC+T Maxim Integrated	USB TYPE-C CC-PIN OVERVOLTAGE PR	0
MAX16919BGEE/V+T Maxim Integrated	IC USB2.0 PROTECT HS AUTO 16QSOP	10000
MAX20340EWL+T Maxim Integrated	BI-DIRECT PWR LINE COMM MGMT IC	0
MAX20046GTC/VY+T Maxim Integrated	AUTOMOTIVE HI-SPEED USB 2.0 PROT	0
MAX9959FCCQ+D Maxim Integrated	25V SPAN, 800MA DEVICE POWER SUP	0
MAX20330BEWA+T Maxim Integrated	ULTRA-FAST PROGRAMMABLE OVP CONT	135000
MAX16919BGEE/V+ Maxim Integrated	IC USB2.0 PROTECT HS AUTO 16QSOP	0
MAX77654MENV+T Maxim Integrated	ULTRA LOW POWER PMIC W/ 3-OUTPUT	0
MAX77654AENVN+T Maxim Integrated	ULTRA LOW POWER PMIC W/ 3-OUTPUT	32500
MAX14742EWP+T Maxim Integrated	SMART COMPACT 6A POWER PATH SWIT	0
MAX77655AEWE+ Maxim Integrated	NANO POWER PMIC WITH 4-OUTPUT SI	990
MAX14580EETE+T Maxim Integrated	USB CHARGER DETECTION IC	0
MAX20046GTCA/VY+T Maxim Integrated	AUTOMOTIVE HI-SPEED USB 2.0 PROT	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