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NCV7691 - Current Controller

Description

Figure 3.

Logic input for output on/off control.

Pull high for output on.

Features

  • Constant Current Output for LED String Drive.
  • External Bipolar Device for Wide Current Range Flexibility.
  • With BCP56 Transistor, Can Drive Multiple Strings Concurrently (ref. Datasheet Info).
  • External Programming Current Resistor.
  • Pulse Width Modulation (PWM) Control.
  • Negative Temperature Coefficient Current Control Option.
  • Open LED String Diagnostic.
  • Short.
  • Circuit LED String Diagnostic.
  • Multiple LED String.

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Datasheet preview – NCV7691

Datasheet Details

Part number NCV7691
Manufacturer ON Semiconductor
File Size 176.53 KB
Description Current Controller
Datasheet download datasheet NCV7691 Datasheet
Additional preview pages of the NCV7691 datasheet.

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Full PDF Text Transcription

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NCV7691 Current Controller for Automotive LED Lamps The NCV7691 is a device which uses an external NPN bipolar device combined with feedback resistor(s) to regulate a current for use in driving LEDs. The target application for this device is automotive rear combination lamps. A single driver gives the user flexibility to add single channels to multichannel systems. A dedicated dimming feature is included via the PWM input pin. The individual driver is turned off when an open load or short circuit is detected. LED brightness levels are easily programmed using an external resistor in series with the bipolar transistor. The use of the resistor gives the user the flexibility to use the device over a wide range of currents. Multiple strings of LEDs can be operated with a single NCV7691 device.
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