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NCV74300V3GEVK

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33
NCV7430
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31
Set_OTP_Param
This command is used for programming the individual bytes of the OTP memory. The OTP address is the pointer to the byte
in OTP (refer to Table 8 OTP memory structure).
Used is a four byte command structure.
Table 28. Set_OTP_Param WRITING FRAME
Byte Content
Structure
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 Identifier 1 1 1 0 0 1 1 1
1 Data 1 1 1 AD[5:0]
2 Data 2 0xFF
3 Data 3 1 1 1 1 OTP address pointer[3:0]
4 Data 4 OTP contents [7:0]
5 Checksum Classic Checksum over data
Sleep
This command is provided to the circuit by the LIN master to put all the slave nodes connected to the LIN bus into sleep mode.
See LIN 2.1 specification and Sleep Mode
. The corresponding LIN frame is a master request command frame (identifier 0x3C)
with data byte 1 containing 0x00 while the followings contain 0xFF.
Table 29. SLEEP WRITING FRAME
Byte Content
Structure
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 Identifier 0 0 1 1 1 1 0 0
1 Data 1 0x00
2 Data 2 0xFF
3 Data 3 0xFF
4 Data 4 0xFF
5 Data 5 0xFF
6 Data 6 0xFF
7 Data 7 0xFF
8 Data 8 0xFF
9 Checksum Classic Checksum over data
NCV7430
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32
APPLICATIONS INFORMATION
High Current LEDs
The NCV7430 is designed to drive RGB LEDs up to
currents of 30 mA per channel. The system capability can be
increased to drive higher current LEDs by configuring the
device with an external PNP transistor as shown in
Figure 12. In this setup, all the LED current is external to the
device. Output current is limited by the base drive to the PNP
(30 mA) and the beta of the PNP. Operation is controlled by
the external feedback provided by R3 through R2 to the
device pin LEDxR.
VBB ANODE
LEDxC
LEDxR
1.2ohm
10 ohm
10 ohm
NJVMJD253T4G
GND
NCV7430
R1
R2
R3
Figure 12. Using the NCV7430 with Higher Current
LEDs
Temperature Correction
Light output from LEDs change with temperature. As
temperature increases, light output goes down. The
magnitude of change typically depends on the type of LEDs
which are used. Red LEDs are typically manufactured using
AlInGaP while green and blue LEDs are typically
manufactured using AlInGaN. These processing differences
result in the red LED temperature sensitivity being much
more sensitive than the green or blue LEDs. As a result, the
green and blue LEDs do not require any corrective
adjustments while the red LEDs require the drive current to
be increased as temperature goes up to keep a constant light
output.
Temperature correction can be implemented using the
current programming pin, LED1R by using a programming
network comprised of a resistor in series with a schottky
diode in parallel with another resistor as shown in Figure 13.
R
redled
sets the nominal LED current and the Schottky diode
with the series resistor (R1) sets the temperature behavior.
The NCV7430 uses a bandgap referenced circuit for
creating the programming reference voltage on the LEDxR
pins. The bandgap reference voltage targets to maintain a
zero TC voltage.
If the system design is able to correlate the red LED
temperature to the NCV7430 IC temperature, there is a
potential to create a compensation for these thermal effects.
Starting with the zero temperature coefficient reference
voltage on the LED1R pin, we can break up the voltage into
two components by mandating a negative temperature
coefficient associated with one component, and leave a
positive temperature coefficient associated with the other
component. This is done by adding a schottky diode in series
with the programming resistor on the LED1R pin. The
negative temperature coefficient of the schottky diode
creates an overall positive temperature coefficient on the
resistor in series. The system designer should consider the
resulting positive voltage temperature coefficient with the
discrete resistor temperature coefficient to obtain the desired
temperature performance. Note, a schottky diode is required
over p−n junction diodes due to the low voltage on the
LED1R pin (325 mV [typ]).
Figure 13. External Temperature Compensation
VBB ANODE
LED3R
GND
NCV7430
D1 D2
D3
D4
LED1C
LED2C
LED3C
LED2R
LED1R
R1* R
redled
* R3*
10 W
R4*
10 W
*R3, R4 = 10 W for 30 mA LED current.
R1, R
redled
values dependent on application.
R1, D4 set the LED current temperature coefficient.
NCV7430
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33
PACKAGE DIMENSIONS
SOIC−14 NB
CASE 751A−03
ISSUE K
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE PROTRUSION
SHALL BE 0.13 TOTAL IN EXCESS OF AT
MAXIMUM MATERIAL CONDITION.
4. DIMENSIONS D AND E DO NOT INCLUDE
MOLD PROTRUSIONS.
5. MAXIMUM MOLD PROTRUSION 0.15 PER
SIDE.
H
14
8
71
M
0.25 B
M
C
h
X 45
SEATING
PLANE
A1
A
M
_
S
A
M
0.25 B
S
C
b
13X
B
A
E
D
e
DETAIL A
L
A3
DETAIL A
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
D 8.55 8.75 0.337 0.344
E 3.80 4.00 0.150 0.157
A 1.35 1.75 0.054 0.068
b 0.35 0.49 0.014 0.019
L 0.40 1.25 0.016 0.049
e 1.27 BSC 0.050 BSC
A3 0.19 0.25 0.008 0.010
A1 0.10 0.25 0.004 0.010
M 0 7 0 7
H 5.80 6.20 0.228 0.244
h 0.25 0.50 0.010 0.019
__ __
6.50
14X
0.58
14X
1.18
1.27
DIMENSIONS: MILLIMETERS
1
PITCH
SOLDERING FOOTPRINT*
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks,
copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC
reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any
particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without
limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications
and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC
does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for
surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where
personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and
its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly,
any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture
of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
P
UBLICATION ORDERING INFORMATION
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5817−1050
NCV7430/D
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
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NCV74300V3GEVK

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Manufacturer:
ON Semiconductor
Description:
LED Lighting Development Tools LIN RGB HIGH CURRENT EVB
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