NCV7683 - ON Semiconductor

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

Part No

NCV7683
Manufacturer

ON Semiconductor
ChipWorker Part#

CW1019825209
Description

LED Driver, Automotive, Octal, 100mA Sequencing
Documentation

Datasheet

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Product Description

The NCV7683 consists of eight 100 mA linear programmable constant current sources. The part is designed for use in the regulation and control of LED based Rear Combination Lamps and blinking functions for automotive applications. System design with the NCV7683 allows for two programmed levels for stop (100% Duty Cycle) and tail illumination (programmable Duty Cycle), or an optional external PWM control can be implemented. LED brightness levels are easily programmed (stop is programmed to the absolute current value, tail is programmed to the duty cycle) with two external resistors. The use of an optional external ballast FET allows for power distribution on designs requiring high currents. Set back power limit reduces the drive current during overvoltage conditions. This is most useful for low power applications when no external FET is used. Sequencing functionality is activated, controlled, and programmed by individual pins. In addition to programming of the sequence interval, the device can sequence 8 individual output channels, 4 pairs of output channels, 2 quad output channels, or all 8 at once (for multi IC use at high currents). Enhanced features of this device are a global enable function and display sequencing. The device is available in a SSOP−24 package with exposed pad.
Features | | Benefits
---|---|---
| | | | |
Constant Current Outputs for LED String Drive
| |
Current source drive optimized for LED drive.
LED Drive Current up to 100mA per Channel
| |
Flexibility for lower current LEDs.
Open LED String Diagnostic with Open-Drain Output in All Modes
| |
Detection of open loads is detected in STOP, TAIL, and Sequence On modes.
Slew Rate Control
| |
Eliminates EMI concerns.
Low Dropout Operation
| |
Allows operation in Pre-Regulator Applications.
External Modulation Capable.
| |
User defined LED intensity.
On-Chip 800 Hz Tail PWM Dimming
| |
Removes PWM feature out of the microprocessor.
Single Resistor for Stop Current Set Point
| |
Easily programmable across platforms.
Single Resistor for Tail Dimming Set Point
| |
Easily programmable across platforms.
Overvoltage Set Back Power Limitation
| |
Allow longer functionality in extended input voltage range..
AEC-Q100 Qualified and PPAP Capable
| |
Fits in automotive applications.
SSOP-24 Fused Lead Package with Exposed Pad
| |
Thermally enhanced package for higher power operation.
Improved EMC Performance
| |
Eliminated need for inductive bead on Vbat.
Programmable Latch-Off function on Open String
| |
Designer flexibility to one off, all off LED turn off feature.
Overtemperature Fault Reporting
| |
Noification of unacceptable operational condition.
Global Enable
| |
Allows sequencing of multiple NCV7683 devices.
Display Sequencing
| |
Implements blinker functionality.

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