LM3646YFQR

$1.38

Description：IC LED DRV RGLTR I2C 20DSBGA
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT),Bulk

SKU:62ee4b960997 Category: LED Drivers IC Brand: Texas Instruments

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Product introduction

LM3646YFQR is listed in the LED Driver IC range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC LED DRV RGLTR I2C 20DSBGA. Review the specifications below when checking this part for your BOM.

LED Driver IC specifications for LM3646YFQR

Description：IC LED DRV RGLTR I2C 20DSBGA
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT),Bulk
Type：DC DC Regulator
Topology：Step-Up (Boost)
Internal Switch(s)：Yes
Number of Outputs：2
Voltage - Supply (Min)：2.7V
Voltage - Supply (Max)：5.5V
Voltage - Output：-
Current - Output / Channel：1.5A (Flash)
Frequency：4MHz
Dimming：I2C
Applications：Camera Flash
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：20-WFBGA, DSBGA
Supplier Device Package：20-DSBGA (2.04x1.78)
Grade：-
Qualification：-

LED Driver IC datasheet and documents for LM3646YFQR

LM3646YFQR

LED Driver IC Overview

The LM3646YFQR is a synchronous boost LED flash driver manufactured by Texas Instruments. It features dual high-side current sources delivering 1.5A for flash applications and supports up to 3A output current. The device operates within a supply voltage range of 2.7V to 5.5V and switches at a frequency of 4MHz. It utilizes I2C control for dimming and includes an integrated thermal monitor, overvoltage protection, and input/output isolation. The component is housed in a 20-DSBGA package with dimensions of 2.04x1.78mm.

LED Driver IC Feature Summary

Dual high-side current sources designed for synchronized LED flash operations
I2C interface enables precise digital dimming control
Integrated thermal monitoring and overvoltage protection mechanisms
Input/output isolation capability ensures system safety during shutdown

LED Driver IC Applications

Camera flash illumination systems
Mobile device lighting drivers
Portable electronic camera modules

LED Driver IC Procurement Notes

This component has reached end-of-life status and is no longer in active manufacturing. Verification of availability through authorized distributors is required as stock may be limited or obsolete. Replacement strategies should prioritize official substitute part numbers recommended by the manufacturer to ensure compatibility and performance continuity.

LED Driver IC Selection Notes

Engineers must account for the discontinued status when selecting this IC for new designs. The 20-DSBGA package requires specific surface-mount assembly considerations. Designers should verify that the 4MHz switching frequency and 1.5A flash current meet application requirements while ensuring adequate thermal management for the compact footprint.

LED Driver IC Part Context

The LM3646YFQR belongs to the LM3646 series of LED lighting drivers from Texas Instruments. It is classified under PMIC LED drivers and specifically targets high-brightness flash applications. The device integrates a synchronous boost converter topology with advanced control features suitable for portable consumer electronics requiring reliable flash performance.