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BD81A24EFV-M

Rohm
Part Number BD81A24EFV-M
Manufacturer Rohm
Description 4ch White LED Driver
Published Jun 5, 2016
Detailed Description Datasheet 4ch White LED Driver with Buck-Boost (40 LED Maximum) BD81A24MUV-M / BD81A24EFV-M General Description BD81A...
Datasheet PDF File BD81A24EFV-M PDF File

BD81A24EFV-M
BD81A24EFV-M


Overview
Datasheet 4ch White LED Driver with Buck-Boost (40 LED Maximum) BD81A24MUV-M / BD81A24EFV-M General Description BD81A24MUV-M/EFV-M is a white LED driver with the capability of withstanding high input voltage (35V Max).
This driver has 4ch constant-current drivers integrated in 1-chip, where each channel can draw up to 120mA (Max), which is also suitable for high illumination LED drive.
Furthermore, a buck-boost current mode DC/DC controller is also integrated to achieve stable operation during power voltage fluctuation.
Light modulation (5000: 1 dimming function) is possible by PWM input.
Key Specifications Operating Input Voltage Range 4.
5 to 35 V Output LED Current Accuracy ±3.
0%@50mA DC/DC Oscillation Frequency 200 to 2200kHz Operating Temperature Range -40 to +125°C LED Maximum Output Current 120mA/ch PWM Min Pulse Width 1.
0µs Features Integrated Buck-Boost Current Mode DC/DC Controller Integrated 4ch Current Driver for LED Drive 5000: 1 PWM Dimming @200Hz External Switching Frequency Synchronization Built-In Protection Function (UVLO, OVP, OCP, SCP) LED Abnormality Detection Function (Open/Short) Integrated VOUT Discharge Function (Buck-Boost or Buck Structure Limitation) AEC-Q100 Qualified (Note 1) (Note 1) Grade1 Package(s) W(Typ) x D(Typ) x H(Max) VQFN28SV5050 (BD81A24MUV-M) HTSSOP-B28 (BD81A24EFV-M) W(Typ) × D(Typ) × H(Max) W(Typ) × D(Typ) × H(Max) 5.
0mm × 5.
0mm ×1.
0mm 9.
7mm × 6.
4mm × 1.
0mm Application For Display audio, CID, Cluster, HUD Small and Medium type LCD Panels for Automotive use.
Typical Application Circuit VCC CIN VCC CREG VREG EN VDISC SYNC RT RRT COMP RPC CPC CSS SS BD81A24MUV-M / BD81A24EFV-M PWM ISET RISET GND OVP CS BOOT OUTH SW OUTL DGND LED1 LED2 LED3 LED4 PGND FAIL1 FAIL2 VREG SHDETEN LEDEN1 LEDEN2 Figure 1.
Buck-Boost Application Circuit Product structure: Silicon monolithic integrated circuit This product has no designed protection against radioactive rays COUT www.
rohm.
com © 2016 ROHM Co.
, Ltd.
...


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