PMIC - Battery Chargers

Part Number	Description / PDF	Quantity
LTC4123EDC#TRPBF Analog Devices, Inc.	IC BATT CHG NIMH 1CELL 6DFN	0
MAX8903NETI+ Analog Devices, Inc.	IC BATT CHG LI-ION 1CELL 28TQFN	1974
LT3652HVEDD#TRPBF Analog Devices, Inc.	IC BAT CHG MULT-CHEM 4-5CL 12DFN	0
MAX8731ETI+ Analog Devices, Inc.	IC BAT CHG MULTCHEM 1-4CL 28TQFN	1726
LTC4089EDJC-1#TRPBF Analog Devices, Inc.	IC BATT CHG LI-ION 1CELL 22DFN	0
LTC4020EUHF#TRPBF Analog Devices, Inc.	IC BATT CHG MULTI-CHEM 38QFN	3225
LTC4002EDD-4.2#PBF Analog Devices, Inc.	IC BATT CHG LI-ION 1CELL 10DFN	3454
LTC4088EDE-2#PBF Analog Devices, Inc.	IC BATT CHG LI-ION 1CELL 14DFN	1226
LT3652HVEMSE#TRPBF Analog Devices, Inc.	IC BAT CHG MULTCHEM 4-5CL 12MSOP	2395
LTC1729CS8-4.1#TRPBF Analog Devices, Inc.	IC BATT CHG LI-ION 1CELL 8SOIC	0
MAX2003CWE Analog Devices, Inc.	IC BATT FAST CHG NICD/NIMH	1690
LT1512CN8#PBF Analog Devices, Inc.	IC BATT CHG MULTI-CHEM 1CEL 8DIP	99
LTC4120EUD-4.2#PBF Analog Devices, Inc.	IC BATT CHG LI-ION 1CELL 16QFN	844
LTC1760IFW#PBF Analog Devices, Inc.	IC BATT CHG SMART 2CEL 48TSSOP	3028
LTC4068EDD-4.2#TRPBF Analog Devices, Inc.	IC BATT CHG LI-ION 1CELL 8DFN	0
DS2714E+ Analog Devices, Inc.	IC BATT CHG NIMH 1-4CELL 20TSSOP	6340
LTC4070IDDB#TRMPBF Analog Devices, Inc.	IC BATT CHG LI-ION 8DFN	0
LTC4065EDC#TRMPBF Analog Devices, Inc.	IC BATT CHG LI-ION 1CELL 6DFN	5319
LTC1731ES8-4.2#TRPBF Analog Devices, Inc.	IC BATT CHG MULT-CHEM 1CEL 8SOIC	0
LTC4000IUFD-1#PBF Analog Devices, Inc.	IC BATT CHG IRON PHOSPHATE 28QFN	145

PMIC - Battery Chargers

1. Overview

Power Management Integrated Circuits (PMIC) with Battery Charger functionality are specialized semiconductor devices that manage power distribution and battery charging processes in electronic systems. These ICs integrate charging algorithms, safety protections, and power path management to optimize energy efficiency and battery lifespan. Their importance in modern technology lies in enabling compact, high-efficiency power solutions for portable electronics, electric vehicles, and IoT devices.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Linear Battery Chargers	Simple topology, low noise, limited efficiency (typically <70%)	Wearable devices, low-power sensors
Switch-Mode Battery Chargers	High efficiency (>90%), supports fast charging protocols	Smartphones, laptops, drones
Multi-Protocol Chargers	Supports USB PD, QC, and proprietary fast charging standards	Universal adapters, power banks
Wireless Battery Chargers	Integrates magnetic induction control and foreign object detection	Smartphones, electric toothbrushes

3. Structure and Components

Typical physical structure includes:

QFN/DFN package (3x3mm to 5x5mm size range)
Internal modules:
- Voltage/current regulation circuits
- Charging algorithm controller (CC-CV, pulsed charging)
- Thermal management unit
- Power MOSFETs (for switch-mode types)
- Communication interface (I2C/SPI for parameter configuration)

4. Key Technical Specifications

Parameter	Typical Range	Importance
Charging Current	100mA-5A	Determines charge time and battery capacity
Voltage Accuracy	0.5%- 2%	Ensures battery longevity and safety
Conversion Efficiency	70%-95%	Impacts thermal performance and battery life
Input Voltage Range	3.7V-24V	Defines compatibility with power sources
Protection Features	OVP/OCP/OTP	Prevents system failures and safety hazards

5. Application Fields

Consumer Electronics: smartphones, tablets, TWS earbuds
Industrial: handheld terminals, robotics, medical devices
Automotive: infotainment systems, battery management for EVs
IoT: smart meters, environmental sensors, security systems

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Texas Instruments	BQ25790	4.5A switch-mode charger with USB PD 3.0 support
Analog Devices	LTC4162	High-voltage battery charger with MPPT algorithm
STMicroelectronics	STBC08	Automotive-grade linear charger with ASIL-B safety rating
NXP Semiconductors	PF1550	PMIC with integrated wireless charging controller

7. Selection Guidelines

Match charging current/voltage requirements with battery specifications
Consider input power source compatibility (USB, AC adapter, solar)
Evaluate required protection features (temperature monitoring, fault reporting)
Check communication interface requirements (I2C register configuration needed?)
Thermal considerations: select package with adequate heat dissipation
Example: For a 10W IoT device, select a 1A linear charger with 1% voltage accuracy

8. Industry Development Trends

Key trends include:

Integration of AI-based charging algorithms for battery aging compensation
Adoption of GaN/SiC transistors for >95% efficiency in fast charging applications
Development of bidirectional chargers for vehicle-to-grid (V2G) applications
Standardization of USB-C Power Delivery as universal charging interface
Miniaturization through 3D packaging technology (stacked die integration)