LP3943ISQ/NOPB ,LED Driver, LED Display Driver - TI

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

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90 points

Part No

LP3943ISQ/NOPB
Manufacturer

TI
ChipWorker Part#

CW22955959
Category

LED Driver, LED Display Driver
Package

WQFN-24
Description

16Channel RGB/White LED driver with independent string control via SMBUS/I2C 24-WQFN -40℃ to 85℃
Documentation

Datasheet
Ships from

Moscow
Наличие

In Stock
Estimated Price

$ 3.17

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LP3943ISQ/NOPB Specifications

Consulting Engineer >>

Attribute	Attribute Value

Part Number	LP3943ISQ/NOPB
Manufacturer	TI
ChipWorker Part#	CW22955959
Category	LED Driver, LED Display Driver
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	24 Pin
Case/Package	WQFN-24
Frequency	400 kHz
Current Rating	25.0 mA
Number of Outputs	16 Output
Input Voltage (DC)	2.30V ~ 5.50V
Output Current	25 mA
Supply Current	550 mA
Number of Positions	24 Position
Power Dissipation	400 mW
Quiescent Current	350 µA
Number of Regulated Outputs	16 Output
Switching Frequency	400 kHz
Topology	Boost
Input Voltage (Max)	5.5 V
Input Voltage (Min)	2.3 V
Output Voltage (Max)	5.5 V
Output Current (Max)	200 mA
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	400 mW
Supply Voltage	2.3V ~ 5.5V
Supply Voltage (Max)	5.5 V
	expand all
Size-Length	4 mm
Size-Width	4 mm
Size-Height	0.8 mm
Operating Temperature	-40℃ ~ 85℃ (TA)
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance Edition	2015/06/15

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Product Description

The LP3943ISQ/NOPB is a 16-output LED Fun Light Driver for use with general purpose I/O expander. This device also contains an internal precision oscillator that provides all the necessary timing required for driving each LED. Two prescaler registers, along with two PWM registers, provide a versatile duty-cycle control. It contains the ability to dim LEDs in SMBUS/I²C applications where it is required, to cut down on bus traffic. Traditionally, dimming LEDs using a serial shift register such as 74LS594/5 requires a large amount of traffic on the serial bus. The LP3943 instead requires only the setup of the frequency and duty cycle for each output pin, from then on, only a single command from the host is required to turn each individual open drain output to an on or off state or to cycle a programmed frequency and duty cycle. Any ports not used for controlling the LEDs can be used for general purpose input/output expansion.
Internal power-ON reset
Active low reset
Internal precision oscillator
Variable dim rate (from 6.25ms to 1.6s, 160 to 0.625Hz)
16 LED drivers (multiple programmable states - on, off, input and dimming at a specified rate)
16 Open-drain outputs capable of driving up to 25mA per LED
Green product and no Sb/Br

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