LP3943ISQ/NOPB Semiconductors - ICs by Texas Instruments

LED DRIVER BOOST 400KHZ WQFN-24

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The LP3943 is an integrated device capable of independently driving 16 LEDs. 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. The LP3943 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. Maximum output sink current is 25 mA per pin and 200 mA per package. Any ports not used for controlling the LEDs can be used for general purpose input/output expansion.

Where to Buy

Prices starting from US$0.98

Distributor Stock
Logo for Farnell
Farnell
from US$2.36
No stock
Buy Now
Logo for Texas Instruments
Texas Instruments
from US$0.98
183,776
in stock
Buy Now
Logo for Newark Electronics
Newark Electronics
from US$2.68
-
Buy Now
Logo for element14
element14
from US$2.86
-
Buy Now

Specifications

Device Topology Boost (Step Up)
Input Voltage Min 2.3V
Input Voltage Max 5.5V
Output Voltage Max 5.5V
Output Current Max 200mA
Switching Frequency 400kHz
No. of Outputs 16Outputs
IC Mounting SMD
Driver Case Style WQFN
No. of Pins 24Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Output Current 25mA

Alternative Descriptions

16 channel RGB/White LED driver with independent string control via SMBUS/I2C | Texas Instruments
Led Driver, Boost, 400Khz, Wqfn-24 | Newark Electronics


Frequently Asked Questions

Where can I find additional details, specifications and documents for a LP3943ISQ/NOPB?

Additional datasheets, footprints and schematics for LP3943ISQ/NOPB are listed on our Part Details page. You can also find images and similar parts to LP3943ISQ/NOPB on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for LP3943ISQ/NOPB on our Product Comparison page. Access via the 'View Pricing & Stock' button to view LP3943ISQ/NOPB price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does LP3943ISQ/NOPB fall under?

The LP3943ISQ/NOPB is listed under Electronic & Electrical Components > Semiconductors - ICs > Driver & Interface ICs.

Can I view similar or alternative parts?

You can view similar parts to LP3943ISQ/NOPB when available in the Driver & Interface ICs range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the LP3943ISQ/NOPB you can contact the distributor directly for product support, shipping queries etc.

Is the LP3943ISQ/NOPB RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for LP3943ISQ/NOPB have stock available?

Authorised distributors including Texas Instruments, Newark Electronics, element14 and Farnell have stock available or on a lead time for LP3943ISQ/NOPB.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for LP3943ISQ/NOPB often in real-time on the comparison pages.

What if I can't find stock of LP3943ISQ/NOPB?

You can fill out our help required form which you can use to request a quote for LP3943ISQ/NOPB from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay