Details, datasheet, quote on part number: BD18378EFV-ME2
PartBD18378EFV-ME2
CategorySemiconductors => Driver ICs => LED Lighting Drivers => 8826867
TitleLED Lighting Drivers 12 Ch LED Driver IC AEC-Q100 Qualified
Description
CompanyROHM Electronics
DatasheetDownload BD18378EFV-ME2 datasheet
Specifications 
Product CategoryLED Lighting Drivers
ManufacturerROHM Semiconductor
Input Voltage3 V to 5.5 V
Operating Frequency1.25 MHz
Supply Current - Max7.5 mA
Output Current10 mA to 50 mA
Maximum Operating Temperature+ 105 C
Mounting StyleSMD/SMT
Package/CaseHTSSOP-B28
BrandROHM Semiconductor
Minimum Operating Temperature- 40 C
Number of Outputs12 Output
Output TypeConstant Current
Output Voltage8 V
PackagingReel
ProductLED Lighting Drivers
Factory Pack Quantity2500
TopologyPWM
TypeLED Driver IC
BD18378EFV-ME2 photo

 

Features, Applications

General Description The is a serial input controlled constant current LED driver with 8 V output rating. 6 bit current calibration is available for each output while a selected PWM input performs dimming on the corresponding output. The BD18378EFV-M is able to perform diagnostic (open / short / temperature) checks to detect LED failure and over temperature on chip. Fault detection is performed also during LED deactivated state. The settings of all internal registers can be read out to verify written information at any time. Features (Note1) AEC-Q100 Qualified Current capability: 50mA per output channel. 4-line SPI Control. External resistor current setting. Limp Home capability. PWM dimming at 200Hz Diagnostic of all PWM inputs. Programmable output mapping to each PWM input. 6 Bit LED brightness adjustment on each channel. Diagnostic output on LED OPEN and SHORT for each channel during PWM on & off time. True LED voltage measurement. Over Temperature Protection and Thermal Feedback. Open Drain Fault indicator. Read-back of all register settings. Outputs can be connected in parallel to achieve more than 50mA into the load. Slew Rate limited switching reduces radiated Noise (EMI). Daisy chain compatible.

Key Specifications Input voltage range: Output voltage range: Output Current range: Output Current accuracy Maximum clock frequency: Operating current: Operating temperature range: Package HTSSOP-B28

Applications Automotive illumination & ambient light Consumer electronics illumination
Noisy ground line Quiet ground line

Product structureSilicon monolithic integrated circuit. www.rohm.co m 2015 ROHM Co., Ltd. All rights reserved. TSZ2211114001 This product is not designed protection against radioactive rays 1/26 TSZ02201-0W1W0C500020-1-2

AGND IREF ERR PWM1 PWM2 SDI CLK Heat Sink PGND VCC SDO CH7 CH6 SENSE PWM4 PWM3 LATCH

Pin Description Pin No. Symbol AGND IREF ERR PWM1 PWM2 SDI CLK Function Analog ground terminal Current setting terminal Open drain fault indicator PWM 0 input terminal Output channel 0 Output channel 1 Output channel 2 Output channel 3 Output channel 4 Output channel 5 PWM 1 input terminal PWM 2 input terminal Serial data input terminal Serial communication clock Pin No. Symbol PGND VCC SDO CH7 CH6 SENSE PWM4 PWM3 LATCH Function Power ground terminal Power supply terminal Serial data output terminal PWM 5 input terminal Output channel 11 Output channel 10 Output channel 9 Output channel 8 Output channel 7 Output channel 6 LED supply sensing terminal PWM 4 input terminal PWM 3 input terminal Latch signal input terminal

www.rohm.co 2015 ROHM Co., Ltd. All rights reserved. m TSZ2211115001

Absolute Maximum Ratings Item Power Supply Voltage(Pin No: 27) Output Voltage (Pin No: to 24) Input Voltage (Pin No: 17, 25) Open Drain Fault Indicator(Pin No: 3) Operating Temperature Range Storage Temperature Range Junction Temperature LED Voltage(Pin No: 18) Electrostatic-Discharge Capability Human Body Model Electrostatic-Discharge Capability Machine Model PWM duty cycle Symbol VCC VDmax VIN VERR TOPR TSTG TJmax VSENSE ESD HBM ESD MM PWM Absolute Maximum value -0.3 to VCC -55 to Unit C

Item Power Supply Voltage Drive Current at full brightness*1 Output Voltage*1 LED Voltage*1*3 Open Drain Fault Indicator PWM duty cycle*2

*1 Check Power de-rating curves of the package before applying maximum values. *2 99.2% max and 0.2% min duty cycle a 200Hz PWM frequency is recommended in order to have complete diagnostic capability; please note that the PWM signal is active LOW. *3 Please make sure the VSENSE voltage is always connected to the LEDs supply voltage at a higher potential than VD. (see also the I/O equivalent circuits)

Item Junction to Ambient Thermal Resistance (1 layer Board) Junction to TOP Thermal characterization Parameter (1 layer Board) Junction to Ambient Thermal Resistance (4 layer Board) Junction to TOP Thermal characterization Parameter (4 layer Board) Junction to Case Thermal Resistance Junction to Case Thermal Resistance

*4 Measured as per JEDEC Standard Board as per JESD51-3/-5/-7 Environment as per JESD51-2A The above mentioned data is measurement data to be used only as reference not guaranteed values.


 

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