Related Manuals for Rohm REFLED005-EVK-002
Summary of Contents for Rohm REFLED005-EVK-002
- Page 1 4ch White LED Driver Built-in Current Driver Boost DC/DC Converter for Automotive BD83A24MUF-M Evaluation Board (REFLED005-EVK-002)
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Page 2: High Voltage Safety Precautions
[8] Be sure to wear insulated gloves when handling is required during operation. After Use [9] The ROHM Evaluation Board contains the circuits which store the high voltage. Since it stores the charges even after the connected power circuits are cut, please discharge the electricity after using it, and please deal with it after confirming such electric discharge. - Page 3 BD83A24MUF-M Evaluation Board REFLED005-EVK-002 Introduction This user’s guide will provide the necessary steps to operate the Evaluation Board of ROHM’s BD83A24MUF-M LED Driver. This document includes the external parts, operating procedures and application data. Description This Evaluation Board was developed for ROHM’s LED Driver BD83A24MUF-M. BD83A24MUF-M is a white LED driver for LCD backlight.
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Page 4: Evaluation Board
Connect pulse generator to PWM-pin. It should be 100Hz to 25kHz and the minimum pulse width must be longer than 0.5μs. Turn on the power supply for +B-pin. Turn on the power supply for EN-pin. Turn on the pulse generator for PWM-pin. © 2023 ROHM Co., Ltd. 66UG031E Rev.001 2/10 Jun.2023... -
Page 5: Operation Mode Settings
D = 15.1 kΩ) ADIM_P ISET is the LED current setting resistor �� (Recommended operating condition:11kΩ to 53kΩ) is the ADIM_P pin input On Duty �� (Recommended operating condition:18% to 100%) © 2023 ROHM Co., Ltd. 66UG031E Rev.001 3/10 Jun.2023... -
Page 6: Pin Configuration
REFLED005-EVK-002 User’s Guide Pin configuration Figure 6. Pin configuration © 2023 ROHM Co., Ltd. 66UG031E Rev.001 4/10 Jun.2023... -
Page 7: Evaluation Board Schematic
REFLED005-EVK-002 User’s Guide Evaluation board schematic Figure 7. Evaluation board schematic © 2023 ROHM Co., Ltd. 66UG031E Rev.001 5/10 Jun.2023... -
Page 8: Parts List
Short ROVP3 1608 330kΩ, 1/10W MCR03 series Resistor Rohm COVP Open RISET1 1608 15kΩ, 1/10W MCR03 series Resistor Rohm RISET2 Short CPLSET1 Open CPLSET2 1005 1500pF, R, 50V GCM155R11H152KA01 Ceramic Murata © 2023 ROHM Co., Ltd. 66UG031E Rev.001 6/10 Jun.2023... - Page 9 RSYNCU Short RSYNCD Open RPWMREG Open RPWM Short RADIM Open RADIM1 Short RLED1 Open RLED2 Open RLED3 Open RLED4 Open Open Open Open RADIM2 Short RADIM3 Open RADIM4 Open RADIM5 Open © 2023 ROHM Co., Ltd. 66UG031E Rev.001 7/10 Jun.2023...
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Page 10: Board Layout
(Top view) Figure 9. 2nd layer layout Figure 8. Top layer layout (Top view) (Top view) (Top view) Figure 10. 3rd layer layout Figure 11. Bottom layer layout (Top view) (Top view) © 2023 ROHM Co., Ltd. 66UG031E Rev.001 8/10 Jun.2023... - Page 11 REFLED005-EVK-002 User’s Guide Reference application data (Ta=25°C, Output voltage=25.6V, Iout=80mA x 4ch) Input voltage (V) Figure 12. Efficiency vs Input voltage Figure 13. Gain, Phase vs Frequency (VCC=13.5V) © 2023 ROHM Co., Ltd. 66UG031E Rev.001 9/10 Jun.2023...
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Page 12: Revision History
REFLED005-EVK-002 User’s Guide Revision history Revision Date Description number 27. Jun. 2023 Initial release © 2023 ROHM Co., Ltd. 66UG031E Rev.001 10/10 Jun.2023... - Page 13 Specific Applications). Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses, or losses incurred by you or third parties arising from the use of ROHM Products for Specific Applications.
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