LTC4121EUD

Description：IC BATT CHG MULTI-CHEM 16QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:201d2926ec0e Category: Battery Chargers Brand: Analog Devices Inc.

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Product introduction

LTC4121EUD is listed in the Battery Chargers range at ChipApex. The manufacturer field lists Analog Devices Inc.. Its product description is IC BATT CHG MULTI-CHEM 16QFN. Review the specifications below when checking this part for your BOM.

Battery Chargers specifications for LTC4121EUD

Description：IC BATT CHG MULTI-CHEM 16QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Battery Chemistry：Multi-Chemistry
Voltage - Supply (Max)：40V
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：16-WFQFN Exposed Pad
Supplier Device Package：16-QFN (3x3)
Number of Cells：-
Current - Charging：Constant - Programmable
Programmable Features：-
Fault Protection：-
Charge Current - Max：400mA
Battery Pack Voltage：18V (Max)
Interface：-
Grade：-
Qualification：-

Battery Chargers datasheet and documents for LTC4121EUD

LTC4121EUD

Battery Chargers Overview

The LTC4121EUD is a 40V, 400mA synchronous step-down battery charger designed for lithium-ion and polymer cells. It features constant-current/constant-voltage (CC/CV) operation with an integrated power path controller. The device supports I2C telemetry for monitoring and control. Packaged in a 16-lead QFN (3x3mm), it offers high efficiency and compact footprint for portable applications.

Battery Chargers Feature Summary

Integrated synchronous buck converter topology for high-efficiency charging
Built-in power path management to balance system load and battery charge
I2C interface for digital telemetry and configuration control

Battery Chargers Applications

Lithium-ion battery charging in portable electronics
Power management for IoT sensor nodes
Compact consumer devices requiring regulated charging

Battery Chargers Procurement Notes

Verify the specific suffix (e.g., -4.2) against your required output voltage setting. Confirm package type matches design constraints. Check RoHS compliance status. Ensure I2C address compatibility with host microcontroller. Validate thermal performance for intended enclosure.

Battery Chargers Selection Notes

Select based on input voltage range up to 40V and maximum charge current of 400mA. Consider the QFN package size for space-limited designs. Evaluate I2C bus requirements for system integration. Compare against non-telemetry alternatives if digital control is not needed.

Battery Chargers Part Context

Part of Analog Devices' LTC4121 family of battery chargers. Includes variants like LTC4121EUD#PBF and LTC4121EUD-4.2#PBF. Shares core architecture with higher current models but optimized for low-power applications. Compatible with DC1977A evaluation board.

Battery Chargers Replacement Considerations

Direct substitutes include other LTC4121 variants with different suffixes indicating voltage settings or packaging. Verify pin compatibility and electrical specifications before substitution. Consult official cross-reference lists for qualified replacements.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

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Delivery time

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Freight calculation

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Mode of Transportation

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Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.