NCV7430汽车LIN RGB LED驱动器综合文档及功能简介

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The NCV7430 is an automotive LIN RGB LED driver designed for multi-color LED applications. This single-chip driver features a LIN interface for parametric programming of LED color and intensity. The device is capable of receiving instructions through the LIN bus and independently driving the LEDs. The NCV7430 operates as a slave on the LIN bus, allowing the master to request color and intensity adjustments for the LEDs. This driver offers flexibility and customization options for automotive lighting applications, providing designers with the ability to create dynamic and vibrant lighting effects. With the NCV7430, designers can easily control and program the LED colors and intensity levels to meet specific design requirements. The driver's LIN interface allows for seamless integration with existing automotive systems, enabling easy communication and control of the LED lighting. Overall, the NCV7430 is a versatile and efficient solution for automotive RGB LED lighting applications. Its advanced features and capabilities make it an ideal choice for creating eye-catching and customizable lighting effects in vehicles. With its reliable performance and ease of use, the NCV7430 is a valuable asset for automotive lighting design projects.

NCV7430

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AC PARAMETERS

The AC parameters are guaranteed for temperature and V

in the operating range unless otherwise specified.

The LIN transmitter and receiver physical layer parameters are compliant to LIN rev. 2.0 & 2.1.

Table 6. AC CHARACTERISTICS

Symbol Pin(s) Parameter Test Conditions Min Typ Max Unit

POWER−UP AND WAKE−UP

Power−up time Guaranteed by design − − 10 ms

LIN_Wake

LIN Dominant Wake−up pulse

filter time

Sleep mode − 80 150

Wake

Reaction time after valid

Wake−up pulse

Sleep mode − 0.3 1 ms

Sleep_to_Normal

Sleep mode to Normal mode

transition time

LIN_Wake

> 150 ms

Guaranteed by design

− 3 10 ms

INTERNAL OSCILLATOR

osc

Frequency of internal oscillator V

= 14 V 1.8 2 2.2 MHz

LIN TRANSMITTER CHARACTERISTICS ACCORDING TO LIN v2.0 & v2.1

LIN

Duty cycle 1

= (t

Bus_rec(min)

/ (2 x t

Bit

)) x 100

See Figure 5

Rec(max)

= 0.744 x V

Dom(max)

= 0.581 x V

;

7.0 V < V

< 18 V;

Bit

= 50 ms

39.6 − − %

D2 Duty cycle 2

= (t

Bus_rec(max)

/ (2 x t

Bit

)) x 100

See Figure 5

Rec(min)

= 0.422 x V

Dom(min)

= 0.284 x V

;

7.6 V < V

< 18 V;

Bit

= 50 ms

− − 58.1 %

LED DRIVERS

LEDmodulation

LEDx

LED modulation frequency for

MODFREQ = 0

LED modulation frequency for

MODFREQ = 1

117

234

122

244

127

254

brise

Turn−on transient time

Between 10% and 90%

− 1 −

bfall

Turn−off transient time − 1 −

LED

settling

Settling time of Current regulators Between 10% and 90%

full scale

0.8 1 1.5

THERMAL CONTROL

TH_timeout

Timeout for current reduction af-

ter TW

− 10 − s

ERROR RETRY CONTROL

retryinterval

Intervaltime between retries 2.7 3 3.3 s

numberofretries

Number of retries before LEDs

are switched off definitely

− 20 −

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