PMIC - Power Management

PMIC - Power Management - Specialized

Part Number	Description / PDF	Quantity
MAX6762TAWED3 Analog Devices, Inc.	MAX6762 LOW-POWER, SINGLE/DUAL-V	1390
LTC3555IUFD#PBF Analog Devices, Inc.	IC USB POWER MANAGER 28-QFN	0
MC34912BACR2 NXP Semiconductors	IC SYSTEM BASIS CHIP LIN 32-LQFP	0
L99DZ70XPTR STMicroelectronics	IC DOOR ACTUATOR DRVR POWERSSO36	0
BQ500215RGCR Texas Instruments	POWER SUPPLY SUPPORT CIRCUIT, FI	2140
NUS3065MUTAG	POWER SUPPLY CIRCUIT, FIXED	6000
MC33FS6514LAER2 NXP Semiconductors	SYSTEM BASIS CHIP DCDC 1.5A VCO	0
TPS2151IPWPR Texas Instruments	IC USB ADJ LDO 5V HP 14-HTSSOP	3981
KA2807MUX Sanyo Semiconductor/ON Semiconductor	PKG DERIVATIVES	80000
MAX6833HXRD0+ Analog Devices, Inc.	MAX6833 ULTRA-LOW-VOLTAGE VOLTAG	802
73S8009C-32IM/F Maxim Integrated	IC PWR MGMT/SMART CARD INT 32QFN	93
MAX8890ETCDDD+ Analog Devices, Inc.	RF-SECTION POWER-MANAGER	9328
LTC3553EUD-2#TRPBF Analog Devices, Inc.	IC USB POWER MANAGER 20QFN	0
MC33912BAC Freescale Semiconductor, Inc. (NXP Semiconductors)	SYSTEM BASIS CHIP, LIN, 2X 5.0V/	250
ISL6532ACR Intersil (Renesas Electronics America)	SWITCHING CONTROLLER	1318
MAX3355EEBC Analog Devices, Inc.	POWER SUPPLY SUPPORT CIRCUIT, FI	2379
MAX6835FXSD3+ Analog Devices, Inc.	MAX6835 ULTRA-LOW-VOLTAGE VOLTAG	1901
MC34PF1550A7EP NXP Semiconductors	PF1550	0
MC35FS4503CAER2 NXP Semiconductors	SYSTEM BASIS CHIP, LINEAR 0.5A V	0
L99DZ70XP STMicroelectronics	IC DOOR ACTUATOR DVR POWERSSO36	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