LM3644YFFR - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

LM3644YFFR
Manufacturer

TI
ChipWorker Part#

CW27754553
Category

LED Driver, LED Display Driver
Package

UFBGA-12
Description

Dual 1.5A Current Source Camera Flash LED Driver 12-DSBGA -40℃ to 85℃
Documentation

Datasheet

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LM3644YFFR Specifications

Attribute	Attribute Value

Part Number	LM3644YFFR
Manufacturer	TI
ChipWorker Part#	CW27754553
Category	LED Driver, LED Display Driver
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	12 Pin
Case/Package	UFBGA-12
Frequency	2MHz,4MHz
Number of Outputs	2 Output
Output Current	1.5 A
Number of Channels	2 Channel
Quiescent Current	300 µA
Input Voltage (DC Max)	5.5 V
Input Voltage (DC Min)	2.5 v
Output Current (Max)	2500 mA
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
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Operating Temperature	-40℃ ~ 85℃ (TA)
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
ECCN Code	EAR99
HK STC License	NLR

Product Description

The LM3644 is a dual LED flash driver that provides a high level of adjustability within a small solution size. The LM3644 utilizes a 2-MHz or 4-MHz fixed-frequency synchronous boost converter to provide power to the dual 1.5-A constant current LED sources. The dual 128 level current sources provide the flexibility to adjust the current ratios between LED1 and LED2. An adaptive regulation method ensures the current sources remain in regulation and maximizes efficiency.
Features of the LM3644 are controlled via an I2C-compatible interface. These features include: hardware flash and hardware torch pins (STROBE and TORCH/TEMP), a TX interrupt, and an NTC thermistor monitor. The device offers independently programmable currents in each output leg to drive the LEDs in a Flash or Movie Mode (Torch) condition.
The 2-MHz or 4-MHz switching frequency options, overvoltage protection (OVP), and adjustable current limit allow for the use of tiny, low-profile inductors and 10-µF ceramic capacitors. The device operates over a –40°C to +85°C ambient temperature range.

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