NCV7683: Automotive Octal 100 mA Sequencing LED Driver.
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.
特性- Constant Current Outputs for LED String Drive
- LED Drive Current up to 100mA per Channel
- Open LED String Diagnostic with Open-Drain Output in All Modes
- Slew Rate Control
- Low Dropout Operation
- External Modulation Capable.
- On-Chip 800Hz Tail PWM Dimming
- Single Resistor for Stop Current Set Point
- Single Resistor for Tail Dimming Set Point
- Overvoltage Set Back Power Limitation
- AEC-Q100 Qualified and PPAP Capable
- SSOP-24 Fused Lead Package with Exposed Pad
- Improved EMC Performance
- Programmable Latch-Off function on Open String
- Overtemperature Fault Reporting
- Global Enable
- Display Sequencing
| 优势- Current source drive optimized for LED drive.
- Flexibility for lower current LEDs.
- Detection of open loads is detected in STOP, TAIL, and Sequence On modes.
- Eliminates EMI concerns.
- Allows operation in Pre-Regulator Applications.
- User defined LED intensity.
- Removes PWM feature out of the microprocessor.
- Easily programmable across platforms.
- Easily programmable across platforms.
- Allow longer functionality in extended input voltage range..
- Fits in automotive applications.
- Thermally enhanced package for higher power operation.
- Eliminated need for inductive bead on Vbat.
- Designer flexibility to one off, all off LED turn off feature.
- Noification of unacceptable operational condition.
- Allows sequencing of multiple NCV7683 devices.
- Implements blinker functionality.
|
应用- Automotive Rear Combination Lamps
- Automotive Daytime Running Lights
- Automotive Fog Lights
- Automotive Center High Mounted Stop Lamps (CHMSL)
- Turn Signal and Other Externally Modulated Applications
- Signature Lamp
| 终端产品 |
数据表 (1)
评估板文档 (5)
封装图纸 (1)
| Document Title | Document ID/Size | Revision |
|---|
| SSOP24 NB EP | 940AP (43.2kB) | O |
评估板与开发工具
| 产品 | 状况 | Compliance | 简短说明 |
|---|
| NCV7683GEVB | Active | Pb-free | 8 Channel Enhanced 100 mALinear Current Regulator and Controller for Automotive LED Lighting in Daisy Chain Sequencing Application Evaluation Board |
产品订购型号
| 产品 | 状况 | Compliance | 封装 | MSL* | 容器 | 预算价格 (1千个数量的单价） |
|---|
| NCV7683DQR2G | Active | AEC Qualified
PPAP Capable
Pb-free
Halide free | SSOP24 NB EP | 940AP | 3 | Tape and Reel | 2500 | $0.85 |
订购产品技术参数
| Product | VI Max (V) | IO Max (mA) | LEDs in Series, Max # | LEDs in Parallel, Max # |
|---|
| NCV7683DQR2G | 40 | 200 | 4 | 24 |
