Lm3420 16.8

Updated October 6, 2026

Overview

Product sourcing insights & recommendations

25 来源

The LM3420-16.8 is a precision shunt regulator specifically designed for 4-cell (4S) Lithium-Ion battery charging and end-of-charge control Mouser Ti. While it remains an active product officially listed by Texas Instruments (TI), it is widely regarded as a legacy device that has been on the market for over 25 years Ti Ti.

1. Product Specifications & Performance

Designed for 16.8V charging (4.2V/cell), the LM3420 series offers high-precision control in a sub-miniature SOT-23-5 package Ti Mouser.

* Precision: Available in 0.5% (LM3420A) and 1.0% (LM3420) tolerance grades to prevent overcharging Ti.

* Operating Voltage: Supports input voltages up to 20V Ti.

* Drive Capability: Can drive up to 15 mA to control external power circuitry Ti.

* Quiescent Current: Ultra-low typical consumption of 85 µA Ti.

2. Market Trends & Insights (2025-2026)

The market for Lithium-Ion charger controllers is experiencing a significant shift toward higher integration and efficiency, driven by the following trends:

* Shift to Modern Alternatives: For new 4S designs, engineers are moving away from legacy shunt regulators like the LM3420 in favor of switching controllers such as the BQ24133 or BQ24650, which offer higher efficiency and integrated thermal management Ti.

* Integration with BMS: The current market trend emphasizes Battery Management Systems (BMS) that combine charging control with cell balancing and protection, as seen in many modern 16.8V modules Alibaba Precedenceresearch.

* EV and Energy Storage Growth: The rapid adoption of electric vehicles and residential energy storage is driving a CAGR of 11-13% for charger ICs, pushing demand for multi-cell (3S/4S) precision controllers Strategicmarketresearch Linkedin.

* Technological Evolution: Newer ICs are increasingly incorporating GaN (Gallium Nitride) for faster charging and MPPT (Maximum Power Point Tracking) for solar-integrated applications Strategicmarketresearch Alibaba.

3. Sourcing & Availability

While raw LM3420-16.8 ICs are available for existing designs, sourcing often involves finding 16.8V charging modules that utilize these or equivalent ICs for battery-powered tools and DIY projects Alibaba. Prices for discrete controller ICs typically range from $0.01 to $0.60 depending on volume and specific model Alibaba Alibaba.

Based on these market trends, you can continue with:

Sources & References

25 sources cited · Verified industry data & reports

LM3420 8.4-V Li-Ion Battery Charge Controller

Texas Instruments

Input Voltage Range: up to 20 V integrated circuits . • Output Current up to 15 mA The LM3420 is available in an 8.4-V version for one through four cell ...

8.2, -8.4, -12.6, -16.8 Lithium-Ion Battery Charge Controller

Mouser Electronics

The LM3420 is a shunt regulator specifically designed to be the reference and control section in an overall feedback loop of a Lithium-Ion battery charger.

8.2, -8.4, -12.6, -16.8 Lithium-Ion Battery Charge Controller

Future Electronics

The LM3420 series of controllers are monolithic integrated circuits designed for charging and end-of-charge control for. Lithium-Ion rechargeable batteries.

LM3420-16.8 Datasheet | National Semiconductor

Datasheet4U

LM3420-16.8 is Lithium-Ion Battery Charge Controller. The LM3420 series of controllers are monolithic integrated circuits designed for charging and end-of- ...

Texas Instruments LM3420M5-8.4 Datasheet PDF

Nantian Electronics

Find the pin configuration, pinout, dimensions and detailed technical data of the Texas Instruments component in the LM3420M5-8.4 datasheet PDF. -16.8 General

LM3420 Datasheet(PDF) - Texas Instruments

ALLDATASHEET.COM

Part #: LM3420. Download. File Size: 1MbKbytes. Page: 26 Pages. Description: 8.4-V Li-Ion Battery Charge Controller. Manufacturer: Texas Instruments.