DatasheetsPDF.com

BD81A44MUV-M Dataheets PDF



Part Number BD81A44MUV-M
Manufacturers ROHM
Logo ROHM
Description 4ch White LED Driver
Datasheet BD81A44MUV-M DatasheetBD81A44MUV-M Datasheet (PDF)

Datasheet 4ch White LED Driver Built-in Current Driver Buck-Boost and Boost DC/DC Converter for Automotive BD81A44EFV-M BD81A44MUV-M General Description Key Specifications BD81A44EFV-M / BD81A44MUV-M is a white LED driver with the capability of withstanding high input voltage (maximum 35 V). This driver has 4ch constantcurrent drivers in 1-chip, where each channel can draw up to 120 mA (Max), and it is suitable for high illumination LED drive. Furthermore, a buck-boost current mode DC/DC co.

  BD81A44MUV-M   BD81A44MUV-M



Document
Datasheet 4ch White LED Driver Built-in Current Driver Buck-Boost and Boost DC/DC Converter for Automotive BD81A44EFV-M BD81A44MUV-M General Description Key Specifications BD81A44EFV-M / BD81A44MUV-M is a white LED driver with the capability of withstanding high input voltage (maximum 35 V). This driver has 4ch constantcurrent drivers in 1-chip, where each channel can draw up to 120 mA (Max), and it is suitable for high illumination LED drive. Furthermore, a buck-boost current mode DC/DC converter is also built to achieve stable operation during power voltage fluctuation. Light modulation (10,000:1@100 Hz dimming function) is possible by PWM input. Features ◼ Operating Input Voltage Range 4.5 V to 35 V ◼ Output LED Current Accuracy ±3.0 %@50 mA ◼ DC/DC Oscillation Frequency 200 kHz to 2200 kHz ◼ Operating Temperature -40 °C to +125 °C ◼ LED Maximum Output Current 120 mA/ch ◼ LED Maximum Dimming Ratio 10,000:1@100 Hz ◼ PWM Minimum Pulse Width 1.0 µs Packages VQFN28SV5050 HTSSOP-B28 W (Typ) x D (Typ) x H (Max) 5.0 mm x 5.0 mm x 1.0 mm 9.7 mm x 6.4 mm x 1.0 mm ◼ AEC-Q100 Qualified*1 ◼ 4ch Current Driver for LED Drive ◼ Buck-Boost Current Mode DC/DC Converter ◼ Control DC/DC Converter Oscillation Frequency by External Synchronized Signal ◼ LSI Protection Function (UVLO, OVP, TSD, OCP, SCP) ◼ LED Abnormality Detection Function (Open/Short) ◼ VOUT Discharge Function (Buck-Boost Structure Limitation) VQFN28SV5050 HTSSOP-B28 *1 Grade 1 BD81A44MUV-M BD81A44EFV-M Applications ◼ Automotive CID (Center Information Display) Panel ◼ Car Navigation ◼ Cluster Panel ◼ HUD (Head Up Display) ◼ Small and Medium Type LCD Panels for Automotive Use Typical Application Circuit Product structure : Silicon integrated circuit This product has no designed protection against radioactive rays This product is protected by U.S. Patent No.7,235,954, No.7,541,785, No.7,944,189. www.rohm.com ©2016 ROHM Co., Ltd. All rights reserved. TSZ22111 • 14 • 001 1/44 TSZ02201-0T3T0C600060-1-2 12.Feb.2021 Rev.008 BD81A44EFV-M BD81A44MUV-M Pin Configuration VQFN28SV5050 (TOP VIEW) Pin Description Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 - Pin Name LEDEN1 LEDEN2 LED1 LED2 LED3 LED4 OVP ISET PGND OUTL DGND VDISC SW OUTH BOOT VREG EN CS VCC SS COMP RT SYNC SHDETEN GND PWM FAIL1 FAIL2 EXP-PAD Function Enable pin 1 for LED output Enable pin 2 for LED output LED output pin 1 LED output pin 2 LED output pin 3 LED output pin 4 Over voltage detection pin LED output current setting pin LED output GND pin Low side FET gate pin DC/DC converter output GND pin Output voltage discharge pin High side FET source pin High side FET gate pin High side FET driver power supply pin Internal constant voltage Enable pin DC/DC converter current sense pin Input power supply pin “Soft Start” capacitor connection Error Amp output Oscillation frequency setting resistor connect External synchronization input pin Short detection enable signal Small signal GND pin PWM light modulation signal input pin “Failure” signal output pin 1 “Failure” signal output pin 2 Back side thermal PAD (Connect to GND) www.rohm.com © 2016 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 2/44 TSZ02201-0T3T0C600060-1-2 12.Feb.2021 Rev.008 BD81A44EFV-M BD81A44MUV-M Pin Configuration HTSSOP-B28 (TOP VIEW) Pin Description Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 - Pin Name VCC SS COMP RT SYNC SHDETEN GND PWM FAIL1 FAIL2 LEDEN1 LEDEN2 LED1 LED2 LED3 LED4 OVP ISET PGND OUTL DGND VDISC SW OUTH BOOT VREG EN CS EXP-PAD Function Input power supply pin “Soft Start” capacitor connection Error Amp output Oscillation frequency setting resistor connect External synchronization input pin Short detection enable signal Small signal GND pin PWM light modulation signal input pin “Failure” signal output pin 1 “Failure” signal output pin 2 Enable pin 1 for LED output Enable pin 2 for LED output LED output pin 1 LED output pin 2 LED output pin 3 LED output pin 4 Over voltage detection pin LED output current setting pin LED output GND pin Low side FET gate pin DC/DC converter output GND pin Output voltage discharge pin High side FET source pin High side FET gate pin High side FET driver power supply pin Internal constant voltage Enable pin DC/DC converter current sense pin Back side thermal PAD (Connect to GND) www.rohm.com © 2016 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 3/44 TSZ02201-0T3T0C600060-1-2 12.Feb.2021 Rev.008 BD81A44EFV-M BD81A44MUV-M Block Diagram www.rohm.com © 2016 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 4/44 TSZ02201-0T3T0C600060-1-2 12.Feb.2021 Rev.008 BD81A44EFV-M BD81A44MUV-M Description of Blocks If there is no description, the mentioned values are typical value. 1. Reference Voltage (VREG) VREG Block generates 5 V at EN = High, and outputs .


BD8118FM BD81A44MUV-M BD81A44EFV-M


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)