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reference designNCV7685 | Demoboard STR-NCV7685-AUTO-GEVB

Onsemi NCV7685 | Demoboard STR-NCV7685-AUTO-GEVB

12 Channels 60 mA LED Linear Current Driver I2C Controllable for Automotive Applications

Overview

TopologyBuck Converter
IC revision2

Description

The NCV7685 consists of twelve linear programmable constant current sources with common reference. The part is designed for use in the regulation and control of LED for automotive applications. The NCV7685 allows 128 different duty cycle levels adjustable using pulse width modulation (PWM) independently for each output channel programmable via I2C serial interface. PWM frequency can be chosen in four different configurations up to 1200 Hz. The device can be used with micro−controller applications using the I2C bus or in stand−alone applications where a choice could be done in between 2 different static configuration settings. The IC also provides 3.3 V voltage reference to the application for loads up to 1 mA. LED brightness level is easily programmed using an external resistor. Each channel has an internal circuitry to detect open−load conditions with an optional auto−recovery mode. If one driver is in open−load condition, all other channels could be turned off according to the programmable bit setting. The device is available in small body size SSOP24−EP package.

Features

  • 12 Common Current Programmable Sources up to 60 mA
  • Independent PWM Duty Cycle Control for each Channel via PC
  • Common PWM Duty Cycle Control via I2C
  • On−Chip 150, 300, 600 and 1200 Hz PWM
  • Open LED String Diagnostics
  • Low Dropout Operation for Pre−Regulator Applications
  • Single Resistor for Current Set Point
  • Voltage Reference 3.3 V/1 mA
  • 8 Bits I2C Interface with CRC8 Error Detection
  • OTP Bank for Stand−Alone Operation (2 Configurations)
  • Output Enable Pin
  • Detection and Protection Against Open Load and Under−Voltage
  • Over Temperature Detection and Protection
  • Low Emission with Spread Spectrum Oscillator
  • NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
  • SSOP24−EP Packaging

Typical applications

  • Entry Level LED Tail Lights. NCV7685 used without MCU, Option Level LED Tail Lights with Sequential Turn Indicator. NCV7685 controlled by Low End MCU, High End Pixelized LED Tail Light with Full Animation Capabilities
  • RGB LED driver (4 x RGB per NCV7685)
  • Dashboard Applications
  • Turn Signal and Other Externally Modulated Applications

More information

Parts approved by Onsemi

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(mm)
To
Ti
L(µH)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
IRP,40K(A)
Mount
λDom typ.(nm)
Emitting Color
λPeak typ.(nm)
ΦV typ.(lm)
IV typ.(mcd)
VF typ.(V)
Chip Technology
2θ50% typ.(°)
CRI typ.
Size
Z @ 100 MHz(Ω)
Zmax(Ω)
IR(mA)
RDC(Ω)
Type
Version
SW(mm)
Flammability Rating
Pins
Center pin Ø(mm)
Plug OD(mm)
Working Voltage(V (AC))
Packaging
Application
Interface Type
Variant
Gender
Operating Temperature
H(mm)
Operation Force(g)
Electrical Life(Cycles)
Actuator Color
Washable
Vaporphase process
SamplesAvailability & Sample
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150060RS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 1.6 mm, –
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Downloads27 files

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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
Length1.6 mm
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MountSMT 
Dominant Wavelength [typ.]625 nm
Emitting ColorRed 
Peak Wavelength [typ.]630 nm
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Luminous Intensity [typ.]250 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
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Size0603 
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Operating Temperature -40 °C up to +85 °C
Height0.7 mm
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150060YS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 1.6 mm, –
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Availability
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Downloads27 files

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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
Length1.6 mm
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MountSMT 
Dominant Wavelength [typ.]590 nm
Emitting ColorYellow 
Peak Wavelength [typ.]595 nm
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Luminous Intensity [typ.]120 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
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Size0603 
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Operating Temperature -40 °C up to +85 °C
Height0.7 mm
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150060GS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 1.6 mm, –
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Downloads27 files

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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
Length1.6 mm
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MountSMT 
Dominant Wavelength [typ.]525 nm
Emitting ColorGreen 
Peak Wavelength [typ.]515 nm
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Luminous Intensity [typ.]430 mcd
Forward Voltage [typ.]3.2 V
Chip TechnologyInGaN 
Viewing Angle Phi 0° [typ.]140 °
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Size0603 
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Operating Temperature -40 °C up to +85 °C
Height0.7 mm
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150060BS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 1.6 mm, –
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Availability
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Downloads28 files

RAY files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
Length1.6 mm
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MountSMT 
Dominant Wavelength [typ.]470 nm
Emitting ColorBlue 
Peak Wavelength [typ.]465 nm
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Luminous Intensity [typ.]145 mcd
Forward Voltage [typ.]3.2 V
Chip TechnologyInGaN 
Viewing Angle Phi 0° [typ.]140 °
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Size0603 
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Operating Temperature -40 °C up to +85 °C
Height0.7 mm
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782853221
SPECWE-CBA SMT EMI Suppression Ferrite Bead, 2 mm, –
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Downloads10 files

RF & Microwave simulation models

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-CBA SMT EMI Suppression Ferrite Bead
Length2 mm
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Size0805 
Impedance @ 100 MHz220 Ω
Maximum Impedance290 Ω
Rated Current2000 mA
DC Resistance0.05 Ω
TypeHigh Current 
VersionSMT 
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Operating Temperature -55 °C up to +125 °C
Height0.9 mm
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78438335220
SPECWE-MAIA SMT Power Inductor, 3 mm, –
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAIA SMT Power Inductor
Length3 mm
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Inductance22 µH
Saturation Current @ 10%1.1 A
Saturation Current @ 30%2 A
DC Resistance1040 mΩ
Self Resonant Frequency12 MHz
Performance Rated Current0.85 A
MountSMT 
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Size3015 
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VersionSMT 
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Pins2 
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Operating Temperature -40 °C up to +125 °C
Height1.5 mm
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158302260
SPECWL-SWTP SMT White Top view PLCC, 3 mm, –
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Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SWTP SMT White Top view PLCC
Length3 mm
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Emitting ColorCool White 
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Luminous Flux [typ.]22 lm
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Forward Voltage [typ.]3.2 V
Chip TechnologyInGaN 
Viewing Angle Phi 0° [typ.]120 °
Color Rendering Index [typ.]90 
Size3022 
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Operating Temperature -40 °C up to +85 °C
Height0.8 mm
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97790503211
SPECWA-SCRW Pan Head Screw w. cross slot M3, 5 mm, –
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Downloads3 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWA-SCRW Pan Head Screw w. cross slot M3
Length5 mm
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Flammability RatingUL94 V-0 
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PackagingBulk 
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Operating Temperature -30 °C up to +85 °C
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61300211121
SPECWR-PHD Pin Header - Single, 5.08 mm, –
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
Length5.08 mm
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MountTHT 
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Rated Current3000 mA
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TypeStraight 
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Pins2 
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Working Voltage250 V (AC)
PackagingBag 
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GenderPin Header 
Operating Temperature -40 °C up to +105 °C
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7447789133
SPECWE-PD SMT Power Inductor, 7.3 mm, –
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
Length7.3 mm
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Inductance33 µH
Saturation Current @ 10%1.15 A
Saturation Current @ 30%1.45 A
DC Resistance240 mΩ
Self Resonant Frequency16 MHz
Performance Rated Current1.85 A
MountSMT 
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Size7332 
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VersionRobust 
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Pins2 
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Operating Temperature -40 °C up to +125 °C
Height3.2 mm
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61300311121
SPECWR-PHD Pin Header - Single, 7.62 mm, –
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
Length7.62 mm
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MountTHT 
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Rated Current3000 mA
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TypeStraight 
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Pins3 
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Working Voltage250 V (AC)
PackagingBag 
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GenderPin Header 
Operating Temperature -40 °C up to +105 °C
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970100365
SPECWA-SPAII Plastic Spacer Stud, metric, internal/ internal, 10 mm, –
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Downloads3 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWA-SPAII Plastic Spacer Stud, metric, internal/ internal
Length10 mm
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Inner ThreadM3 
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SW6 mm
Flammability RatingUL94 HB 
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Operating Temperature -30 °C up to +110 °C
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61300511121
SPECWR-PHD Pin Header - Single, 12.7 mm, –
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
Length12.7 mm
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MountTHT 
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Rated Current3000 mA
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TypeStraight 
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Pins5 
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Working Voltage250 V (AC)
PackagingBag 
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GenderPin Header 
Operating Temperature -40 °C up to +105 °C
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971150365
SPECWA-SPAIE Plastic Spacer Stud, metric, internal/ external, 15 mm, M3
Simu­lation–
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Downloads3 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWA-SPAIE Plastic Spacer Stud, metric, internal/ external
Length15 mm
Outer ThreadM3 
Inner ThreadM3 
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SW6 mm
Flammability RatingUL94 HB 
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613024243121
SPECWR-PHD Socket Header - Dual, 30.98 mm, –
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Socket Header - Dual
Length30.98 mm
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MountTHT 
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Rated Current3000 mA
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TypeAngled 
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Pins24 
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Working Voltage250 V (AC)
PackagingTray 
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GenderSocket Header 
Operating Temperature -40 °C up to +105 °C
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694106301002
SPECWR-DC Power Jacks, –, –
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-DC Power Jacks
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MountTHT 
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Rated Current5000 mA
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TypeRight Angled 
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Center pin Ø2 mm
Recommended Plug outer Ø5.5 mm
Working Voltage30 V (AC)
PackagingBag 
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Operating Temperature -40 °C up to +85 °C
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434153017835
SPECWS-TASV J-Bend SMT Tact Switch 3.5x2.9 mm, –, –
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Downloads6 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWS-TASV J-Bend SMT Tact Switch 3.5x2.9 mm
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Rated Current50 mA
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PackagingTape and Reel 
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Operating Temperature -40 °C up to +85 °C
Height1.7 mm
Operation Force350 g
Electrical Life200000 Cycles
Actuator ColorBlue 
WashableNo 
Vaporphase processnot specified 
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65100516121
SPECWR-USB Mini/Micro Connectors, –, –
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-USB Mini/Micro Connectors
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Rated Current1000 mA
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TypeHorizontal 
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Pins5 
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Working Voltage30 V (AC)
PackagingTape and Reel & Mylar 
ApplicationMini USB 2.0 
Interface TypeType B 
Variantwith Pads & Pegs 
GenderReceptacle 
Operating Temperature -40 °C up to +105 °C
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709940300
SPECWA-SNTE Snap-In Stop Spacer for Printed Circuit Boards, –, –
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Downloads3 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWA-SNTE Snap-In Stop Spacer for Printed Circuit Boards
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Flammability RatingUL94 V-2 
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Operating Temperature -30 °C up to +85 °C
Height2.4 mm
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150141RS63140
SPECWL-SMTD SMT Mono-color TOP LED Diffused Dome, –, –
Simu­lation
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMTD SMT Mono-color TOP LED Diffused Dome
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MountSMT 
Dominant Wavelength [typ.]620 nm
Emitting ColorRed 
Peak Wavelength [typ.]630 nm
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Luminous Intensity [typ.]16000 mcd
Forward Voltage [typ.]2.4 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]30 °
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Size3528 
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Operating Temperature -40 °C up to +100 °C
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150141YS63140
SPECWL-SMTD SMT Mono-color TOP LED Diffused Dome, –, –
Simu­lation
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMTD SMT Mono-color TOP LED Diffused Dome
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MountSMT 
Dominant Wavelength [typ.]590 nm
Emitting ColorYellow 
Peak Wavelength [typ.]592 nm
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Luminous Intensity [typ.]15000 mcd
Forward Voltage [typ.]2.4 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]30 °
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Size3528 
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Operating Temperature -40 °C up to +100 °C
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