PMIC - Power Management

PMIC - Power Management - Specialized

Part Number	Description / PDF	Quantity
MAX6426UK16+ Analog Devices, Inc.	MAX6426 LOW-POWER, SOT MICROPROC	1194
MC33FS6511CAE NXP Semiconductors	SYSTEM BASIS CHIP DCDC 1.5A VCO	0
MCZ33905DS3EKR2,518 NXP Semiconductors	SYSTEM BASIS CHIP, LIN, 2X 3.3V	1000
LP2997MR Texas Instruments	IC DDR-II TERM REG 8SOPWRPAD	594
BQ50002ARHBT Texas Instruments	IC WIRELESS PWR TX 32VQFN	150
BQ500511RHAT Texas Instruments	IC WIRELESS TRANSMITTER 40VQFN	255
MC13892AJVL Freescale Semiconductor, Inc. (NXP Semiconductors)	POWER SUPPLY CIRCUIT, ADJ	2593
TS13501STRT Semtech	SSR RELAY DPST-NO 1A 24-36V	2051
TPS657051YZHT Texas Instruments	TPS657051 3-CHANNEL POWER MANAGE	250
MAX6375UR26+ Analog Devices, Inc.	MAX6375 3-PIN, ULTRA-LOW-POWER V	3330
TPS65073RSLT Texas Instruments	IC PWR MGMT 5CH W/2 LDO 48VQFN	250
TPS6591133A2ZRC Texas Instruments	IC PMU DC/DC CTLR 96BGA	31200
MAX6318LHUK49BX+	MAX6318 5-PIN MICROPROCESSOR SUP	1533
BQ51014YFPT Texas Instruments	TELECOM CIRCUIT, 1-FUNC	5500
STNRGPF02TR STMicroelectronics	TWO-CHANNEL INTERLEAVED CCM PFC	500
TPS658600AZQZT Texas Instruments	POWER SUPPLY CIRCUIT, ADJ	8000
MAX253CPA+ Maxim Integrated	IC XFRMR DRIVER RS485 8-DIP	1308
MAX16929GGUI/V+T Maxim Integrated	IC TFT-LCD PWR SUPPLY 28TSSOP	12500
TPS658600AZQZR Texas Instruments	POWER SUPPLY CIRCUIT, ADJ	2492
RV4141AN Sanyo Semiconductor/ON Semiconductor	IC CTRLR LP AC GFI 8-DIP	1860

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