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PDF NCV7430 Data sheet ( Hoja de datos )
| Número de pieza | NCV7430 | |
| Descripción | Automotive LIN RGB LED Driver | |
| Fabricantes | ON Semiconductor | |
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NCV7430
Automotive LIN RGB LED
Driver
The NCV7430 is a single−chip RGB driver intended for dedicated
multicolor LED applications. The RGB LED driver contains a LIN
interface (slave) for parametric programming of LED color and intensity.
The device receives instructions through the LIN bus and
subsequently drives the LEDs independently.
The NCV7430 acts as a slave on the LIN bus and the master can
request specific status information (parameter values and error flags).
The LIN address of the NCV7430 can be programmed in the internal
memory of the device.
The NCV7430 is fully compatible with automotive requirements.
PRODUCT FEATURES
LED Driver
• 3 Independent LED Current Regulators
• LED Currents Adjustable with External Resistors
• Power Dissipation Option with External Ballast Transistor
Controller with One −Time −Programmable Memory (OTP)
• LED Modulation Controller for 3 LEDs
• Full LED Calibration Support
♦ Internal LED Color Calibration via Matrix Calculation
♦ Intensity Control (linear or logarithmic)
♦ Dimming and Color Transition (linear) Function
with Programmable Transition Time
LIN Interface
• LIN Physical Layer according to LIN 2.1/ SAE J2602
• OTP−programmable Device Node Number
• OTP−programmable Group Address
• Diagnostics and Status Information
• LIN Bus Short−circuit Protection to Supply and Ground
Protection and Diagnostics
• Over−current Detection
• Short Circuit Detection to GND and VBB
• Open LED Detection
• High Temperature Warning and Shutdown
• Retry Mode on Error Detection
Power Saving
• Sleep Mode Supply Current 10 mA
• Compliant with 14 V Automotive Systems
EMI Compatibility
• LIN Bus Integrated Slope Control
• EMC Reduced LED Modulation Mode
• NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
• These Devices are Pb−Free and are RoHS Compliant
www.onsemi.com
14
1
SOIC−14
D2 SUFFIX
CASE 751A
MARKING
DIAGRAM
14
NCV7430−0
AWLYWWG
1
NCV7430 = Specific Device Code
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
PIN CONNECTIONS
ANODE
VBIAS
VBB
LIN
GND
TST2
GND
1
2
3
4
5
6
7
14
LED3C
13
LED1C
12
LED2C
11
TST1
10
LED2R
9
LED1R
8
LED3R
ORDERING INFORMATION
Device
NCV7430D20G
NCV7430D20R2G
Package
SOIC−14
(Pb−Free)
SOIC−14
(Pb−Free)
Shipping†
55 Units / Tube
3000 / Tape &
Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2015
April, 2015 − Rev. 8
1
Publication Order Number:
NCV7430/D
1 page  
NCV7430
Table 5. ELECTRICAL CHARACTERISTICS (5.5 V < VBB < 18 V, −40°C < TJ < 125°C, Rsense = 10 W TWPROG = TWPROG2 =
0, unless otherwise specified).
Symbol
Pin(s)
Characteristic
Conditions
Min Typ Max Unit
LEDDRIVER
ILEDmax
ILEDmaxTotal
LED1C
LED2C
LED3C
Single LED current in nor-
mal operation
All LED currents in normal
operation
VBB = 14 V
For individual LED driven
VBB = 14 V
For all LEDs driven
−
−
− 32 mA
− 96 mA
ILEDxC
IMSabs
VVref1
LED current
Uncalibrated Max ON Duty
mA
Cycle
28 30.5 32
RSENSE = 10 W
RSENSE = 100 W
2.8 3.05 3.2
Absolute error on LED
Calibrated
%
current
VBB = 14 V,
3 mA < ILEDxC < 30 mA
RSENSE = 10 W
−1 − 1
RSENSE = 100 W
−3 − 3
Reference voltage for cur-
rent regulators (High)
state
VBB = 14 V
− 325 − mV
V Vref2
Reference voltage for cur-
rent regulators (Low) state
VBB = 14 V
− 20 − mV
LIN TRANSMITTER
Ibus_off
LIN
Dominant state, driver off
Ibus_off
Recessive state, driver off
Ibus_lim
Rslave
LIN RECEIVER
Current limitation
Pullup resistance
Vbus_dom
Vbus_rec
Vbus_hys
Vrec_th_wake
LIN Receiver dominant state
Receiver recessive state
Receiver hysteresis
Lin wake up threshold
THERMAL WARNING & SHUTDOWN
Ttw Thermal warning
(Notes 10, 11)
Vlinbus = 0 V,
VBB = 8 V & 18 V
Vlinbus = Vbat,
VBB = 8 V & 18 V
VBB = 8 V & 18 V
VBB = 8 V & 18 V
VBB = 8 V & 18 V
VBB = 8 V & 18 V
VBB = 8 V & 18 V
VBB = 8 V & 18 V
−1 − − mA
− − 20 mA
40 75 200 mA
20 30 47 kW
0
0.6 * VBB
0.05 * VBB
VBB − 1.1
−
0.4 * VBB
V
−
VBB
V
− 0.175 * VBB V
−
VBB − 3.3
V
107 115 123 °C
Ttwhyst
Thermal warning hyster-
esis
− 10 −
Ttsd Thermal shutdown
(Note 10)
147 155 163 °C
THERMAL CONTROL
TH_Ired_step
LED Drive Current change
at Thermal Warning
− −6.25 −
%
per
step
VBIAS OUTPUT
Vbias
VBB SUPPLY
VBB_UV
Output voltage
VBB Under Voltage
for LIN Communication
VBB = 14 V, Ibias = 5 mA
7.3 −
5.40 5.8
8.3
6.0
V
V
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
10. Parameter guaranteed by trimming in production test.
11. No more than 2000 cumulative hours in life time above Tw.
www.onsemi.com
5
5 Page 
NCV7430
Table 7. ERROR CONDITIONS FOR EACH INDIVIDUAL LED
Error Description:
ERR[2] ERR[1] ERR[0]
Retry Option
<RETRYSTATE>
Action:
No Error
000
No
No Action
Open circuit LEDxR
Short from ANODE to LEDxC
011
Yes
Thermal Sense
Short from LEDxC to GND (Note 13)
0
1
0
“Shorted LED cathode to GND”
Yes ANODE OFF (Note 12)
LEDxC OFF
Open circuit (LEDxC to ANODE)
101
No
Thermal Sense
Thermal Shutdown
Automatic retry below Thermal
Warning Threshold
LED & ANODE OFF
(Note 12)
12. ANODE OFF is realized by internal circuitry that switches VBIAS to 0 V. The Anode can only be switched off when an external transistor is used.
13. A short from (LEDxC) to (LEDxR), or (ANODE) to (LEDxR) may damage the device. When the external ballast transistor is not used, the
LED and/or Rsense may also be damaged.
Error
Detection
Manager
LED Open Circuit
Detection
LED Short Circuit
Detection
Short Circuit
Detection
LEDxC to GND
Open Circuit
Detection
RSENSE to GND
ANODE
LEDxC
LEDxR
GND
Figure 7. Short Circuit and Open Circuit Detection
Thermal Warning and Thermal Shutdown
The NCV7430 has thermal warning and thermal
shutdown protection features. When the junction
temperature of the NCV7430 rises above the thermal
warning level (T<TW>), the <TW> warning flag is set in the
status register. When the junction temperature rises above
T<TSD>, the device will switch off the LEDs, and set the
<TSD> flag in the status register. <TSD> and <TW> flags
represent an event has happened and may not represent the
current state of the IC. After the <TSD> flag is set, the device
can only enter normal operation again after it is cooled down
below the T<TW> level. After a <TSD > occurrence and the
cooling down period, the NCV7430 will resume normal
operation.
Thermal Control Bit
When the thermal control bit <TH_CONT> is set, the
NCV7430 will actively regulate the LED currents as
programmed by the user when exceeding a thermal warning
threshold. This function protects the device and the LEDs
from overheating without interaction from the LIN master.
When T<TW> is reached, the NCV7430 will decrease the
LED currents by a step defined by the parameter
TH_Ired_step. The reduction in current is represented by the
status bit <TH_CONT_STATE>. If after THtimeout
seconds the thermal warning condition is still present, the
current is decreased further. If the thermal warning
condition is removed within the THtimeout seconds, the
NCV7430 keeps the reduced current setting for the next
www.onsemi.com
11
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| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet NCV7430.PDF ] | |
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