PMIC - Battery Management

Image Part Number Description / PDF Quantity Rfq
LTC6810IG-1#3ZZTRPBF

LTC6810IG-1#3ZZTRPBF

Analog Devices, Inc.

IC BAT MON MULT-CHEM 1-6C 44SSOP

0

MAX1772EEI

MAX1772EEI

Analog Devices, Inc.

IC BATT CHARGER BLDG BLOCK

0

LTC6810IG-2#3ZZTRPBF

LTC6810IG-2#3ZZTRPBF

Analog Devices, Inc.

IC BAT MON MULT-CHEM 1-6C 44SSOP

0

MAX6783TEB+

MAX6783TEB+

Analog Devices, Inc.

IC BATT MON MULTI-CHEM 4C 16TQFN

2667

MAX6432EHUS

MAX6432EHUS

Analog Devices, Inc.

IC BAT MON MULT-CHEM 2C SOT143-4

2400

DS2761AE+

DS2761AE+

Analog Devices, Inc.

IC BATT MONITOR LI-ION 16TSSOP

7046

LT1579CS-3#PBF

LT1579CS-3#PBF

Analog Devices, Inc.

IC BATT PWR MGMT MULTI 1C 16SOIC

0

MAX6431ORUS

MAX6431ORUS

Analog Devices, Inc.

IC BAT MON MULT-CHEM 2C SOT143-4

1809

DS1259+

DS1259+

Analog Devices, Inc.

IC BATT PWR MGMT 16DIP

1670

LTC6803HG-4#PBF

LTC6803HG-4#PBF

Analog Devices, Inc.

IC BATT MON MULTI 1-12C 44SSOP

1098

LTC4162EUFD-FFSM#TRPBF

LTC4162EUFD-FFSM#TRPBF

Analog Devices, Inc.

IC BAT LIFEPO4/LI-ION 1-9C 28QFN

0

LTC4162EUFD-SST#PBF

LTC4162EUFD-SST#PBF

Analog Devices, Inc.

IC BATT MON LEAD ACID 4CEL 28QFN

193

MAX1894XEEE

MAX1894XEEE

Analog Devices, Inc.

IC BATT PACK PROTECTOR LI+

3088

LTC2943IDD-1#PBF

LTC2943IDD-1#PBF

Analog Devices, Inc.

IC BATT MONITOR MULTI-CHEM 8DFN

127

MAX6848KARD7

MAX6848KARD7

Analog Devices, Inc.

IC BATT MON MULT-CHEM 2C SOT23-8

1193

LTC1559CS-3.3#TRPBF

LTC1559CS-3.3#TRPBF

Analog Devices, Inc.

IC BATT PWR MGT NICAD 1C 16SOIC

0

MAX1259CWE

MAX1259CWE

Analog Devices, Inc.

IC BATT PWR MGMT 16SOIC

669

MAX6427DHUR

MAX6427DHUR

Analog Devices, Inc.

IC BATT MON MULT-CHEM 1C SOT23-3

1922

MAX6437UT

MAX6437UT

Analog Devices, Inc.

IC BATT MON MULT-CHEM 2C SOT23-6

464

LTC4162IUFD-L40#PBF

LTC4162IUFD-L40#PBF

Analog Devices, Inc.

IC BATT MON LI-ION 1-8CELL 28QFN

136

PMIC - Battery Management

1. Overview

Power Management Integrated Circuits (PMICs) with Battery Management functionality are specialized semiconductor devices designed to monitor, control, and optimize battery operations in electronic systems. These ICs handle critical tasks including charging control, discharge regulation, capacity monitoring, and safety protection. Their importance has grown exponentially with the proliferation of portable electronics, electric vehicles, and energy-harvesting systems, where battery efficiency and safety are paramount.

2. Major Types & Functional Classification

TypeFunctional FeaturesApplication Examples
Battery Charge Management ICsSupport Li-ion/Polymer, NiMH, and lead-acid chemistries; implement CC/CV charging, thermal regulationSmartphones, power banks
Fuel Gauge ICsImpedance tracking, voltage-based SOC estimation, data loggingLaptops, medical devices
Battery Protection ICsOvervoltage, overcurrent, short-circuit, and temperature protectionE-bikes, battery packs
Power Path Management ICsDynamic power distribution between charger and system loadTablets, drones

3. Structure & Composition

A typical PMIC Battery Management IC integrates:

  • Analog Front-End (AFE) with precision ADC/DAC
  • Digital control logic (state machines or embedded microcontrollers)
  • Communication interfaces (I2C, SMBus, SPI)
  • High-side/low-side MOSFET drivers
  • Temperature sensing elements
  • Non-volatile memory for calibration data

Advanced packages (QFN, BGA) enable high integration while maintaining thermal performance.

4. Key Technical Specifications

ParameterTypical RangeImportance
Charging Current Range100mA - 5ADetermines charge speed and battery size compatibility
SOC Estimation Accuracy 1-5%Impacts runtime prediction reliability
Quiescent Current1-20 ACrucial for standby power efficiency
Communication Speed400kHz - 3.4MHz (I2C)Affects system responsiveness
Operating Temperature-40 C to +125 CDetermines environmental robustness

5. Application Fields

  • Consumer Electronics: Smartphones (Apple iPhone PMICs), Smartwatches (Fitbit Charge series)
  • Medical Devices: Portable ultrasound machines (Philips Lumify), infusion pumps
  • Automotive: EV battery packs (Tesla Model 3 BMS), start-stop systems
  • Industrial: Robotics (Boston Dynamics Atlas), energy storage systems

6. Leading Manufacturers & Products

ManufacturerRepresentative ProductKey Features
Texas InstrumentsBQ25790Single-chip solution with USB PD 3.0, 3.5A charging
Analog DevicesMAX17055ModelGauge m3 algorithm, 60s runtime prediction
STMicroelectronicsSTM32F051xCortex-M0 core with integrated Li-ion charger
NXP SemiconductorsPF1550PMIC for i.MX8 processors with dynamic voltage scaling

7. Selection Guidelines

Key considerations:

  • Battery chemistry compatibility (Li-ion requires CC/CV profile)
  • System voltage requirements (USB PD needs 5-20V support)
  • Form factor constraints (Wearable devices demand WCSP packages)
  • Communication protocol compatibility (I2C vs. SMBus vs. HDQ)
  • Safety certifications (UL 1642 for lithium batteries)
  • Software ecosystem (development tools and reference designs)

Example: For a 2-cell Li-ion notebook battery, select a multi-cell fuel gauge (e.g., BQ30z55) with SHA-256 authentication and PC companion software support.

8. Industry Trends

  • Integration of wireless charging (Qi standard) with battery management
  • Adoption of AI algorithms for adaptive charging profiles
  • Development of ultra-low-power PMICs for IoT edge devices
  • Increase in ASIL-D rated automotive-grade PMICs for EVs
  • Transition to 3D packaging for higher functional density
  • Growing adoption of battery health analysis (BHA) algorithms
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