Low

LP3943ISQ/NOPB - 

Driver de LED, 16 Sorties, Boost (Step Up), 2.3V-5.5V in, Découpage 400kHz,25MA out, WQFN-24

TEXAS INSTRUMENTS LP3943ISQ/NOPB

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Réf. Fabricant:
LP3943ISQ/NOPB
Code Commande :
2492296
Fiche technique:
(EN)
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Informations produit

:
-
:
-40°C
:
Pièce
:
16Sortie(s)
:
-
:
2.3V
:
-
:
125°C
:
5.5V
:
400kHz
:
25mA
:
Boost (Step Up)
:
24Broche(s)
:
WQFN
:
MSL 1 - Illimité
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Aperçu du produit

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

Applications

Eclairage LED, Périphériques Portables, Electronique Grand Public, Eclairage

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