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BD8379EFV-ME2

Public Made by Adom

by adom

ROHM Semicon LED Drivers, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BD8379EFV-ME2

ROHM Semicon · LED Drivers · HTSSOP-20-EP

BD8379EFV-ME2 from ROHM Semicon, in a HTSSOP-20-EP. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VCC power_in Power supply voltage input, recommended 3.0 to 5.5V (absolute max 7V).
2 SERIN input Serial data input, taken into the shift register on the rising edge of CLK.
3 D0 output Open-drain output 0, 35V max, 50mA DC max, 6Ω typ ON resistance.
4 D1 output Open-drain output 1, 35V max, 50mA DC max, 6Ω typ ON resistance.
5 D2 output Open-drain output 2, 35V max, 50mA DC max, 6Ω typ ON resistance.
6 D3 output Open-drain output 3, 35V max, 50mA DC max, 6Ω typ ON resistance.
7 D4 output Open-drain output 4, 35V max, 50mA DC max, 6Ω typ ON resistance.
8 D5 output Open-drain output 5, 35V max, 50mA DC max, 6Ω typ ON resistance.
9 RST_B input Active-low reset input; voltage below VTL resets the registers and opens D0 to D11 (Low: FF data 0).
10 OEN_B input Output enable input; High forces D0 to D11 open (output OFF), and a PWM signal gives PWM operation.
11 SEROUT output Serial data output for cascade connection, transferred on the falling edge of CLK (VOH 4.6V min at 5V, -4mA).
12 LATCH input Latch signal input; the rising edge (High: data latch) records the shift register data.
13 D6 output Open-drain output 6, 35V max, 50mA DC max, 6Ω typ ON resistance.
14 D7 output Open-drain output 7, 35V max, 50mA DC max, 6Ω typ ON resistance.
15 D8 output Open-drain output 8, 35V max, 50mA DC max, 6Ω typ ON resistance.
16 D9 output Open-drain output 9, 35V max, 50mA DC max, 6Ω typ ON resistance.
17 D10 output Open-drain output 10, 35V max, 50mA DC max, 6Ω typ ON resistance.
18 D11 output Open-drain output 11, 35V max, 50mA DC max, 6Ω typ ON resistance.
19 CLK input Clock input for the serial shift register, max 1.25MHz.
20 GND power_in Ground.
21 Thermal PAD passive Back side thermal pad; please connect to GND.

Key specifications

Parameter Value
Manufacturer ROHM Semicon
Package HTSSOP-20-EP
Category Display Modules / LED Drivers / Display Drivers
Pins 21

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
ON Resistor1 RON1 6 12 Ω ID=20mA, VCC=4.5 to 5.5V 4
ON Resistor2 RON2 9 18 Ω ID=20mA, VCC=3.0 to 4.5V 4
Output leakage current1 IDL1 0.3 μA VD=34V, Ta=-40~125°C 4
Upper limit threshold voltage1 VTH1 0.5 xVCC VCC=4.5 to 5.5V 4
Upper limit threshold voltage2 VTH2 0.6 xVCC VCC=3.0 to 4.5V 4
Bottom limit threshold voltage1 VTL1 0.2 xVCC VCC=4.5 to 5.5V 4
Bottom limit threshold voltage2 VTL2 0.3 xVCC VCC=3.0 to 4.5V 4
OEN_B Hysteresis width VHYS 0.15 0.3 0.5 V VCC=5.0, OEN_B PIN 4
Serial clock frequency FCLK 1.25 MHz 4
Input leakage Current L IINLL -5 0 μA VIN=0V 4
Input leakage Current H IINLH 0 5 μA VIN=5V 4
Circuit Current ICC 0.05 1 mA Serial Data Input, VCC=5V, CLK=500KHz, VTH=VCC, VTL=0V, SEROUT=OPEN 4
Static Current ISTN 0 50 μA SEROUT=OPEN 4
SEROUT Output Voltage High1 VOH1 4.6 4.8 V VCC=5V, ISO=-4mA 4
SEROUT Output Voltage Low1 VOL1 0.2 0.4 V VCC=5V, ISO=4mA 4
SEROUT Output Voltage High2 VOH2 2.7 3 V VCC=3.3V, ISO=-4mA 4
SEROUT Output Voltage Low2 VOL2 0.3 0.6 V VCC=3.3V, ISO=4mA 4
CLK period TCK 800 ns Ta=-40 to 105°C VCC=3.0 to 5.5V 10
CLK high pulse width TCKH 380 ns Ta=-40 to 105°C VCC=3.0 to 5.5V 10
CLK low pulse width TCKL 380 ns Ta=-40 to 105°C VCC=3.0 to 5.5V 10
SERIN high and low pulse width TSEW 780 ns Ta=-40 to 105°C VCC=3.0 to 5.5V 10
SERIN setup time prior to CLK rise TSEST 150 ns Ta=-40 to 105°C VCC=3.0 to 5.5V 10
SERIN hold time after CLK rise TSEHD 150 ns Ta=-40 to 105°C VCC=3.0 to 5.5V 10
LATCH high pulse time TLAH 380 ns Ta=-40 to 105°C VCC=3.0 to 5.5V 10
Last CLK rise to LATCH rise TLADZ 200 ns Ta=-40 to 105°C VCC=3.0 to 5.5V 10
OEN_B Switching Time (L→H) TDOENH 3000 ns Ta=-40 to 105℃ VCC=3.0 to 5.5V 11
OEN_B Switching Time (H→L) TDOENL 2000 ns Ta=-40 to 105℃ VCC=3.0 to 5.5V 11
LATCH Switching Delay Time TDLAH 3000 ns Ta=-40 to 105℃ VCC=3.0 to 5.5V 11
SEROUT Propagation Delay Time (L→H) TDSOH 350 ns Ta=-40 to 105℃ VCC=3.0 to 5.5V 11
SEROUT Propagation Delay Time (H→L) TDSOL 350 ns Ta=-40 to 105℃ VCC=3.0 to 5.5V 11
Power Supply Voltage VCC 7 V 3
Output Voltage VDmax 35 V 3
Input Voltage VIN -0.3 V -0.3 to VCC 3
Operating Temperature Range Topr -40 105 °C 3
Storage Temperature Range Tstg -55 150 °C 3
Drive Current (DC) IomaxD 50 mA 3
Drive Current (Pulse) IomaxP 150 mA *1 3
Junction Temperature Tjmax 150 °C 3
Power Supply Voltage VCC 3 5.5 V 3
Operational Temperature Topr -40 105 °C 3
Rising Slew Rate SRRISE 20 V/μs Ta=25°C, VCC=5V, RL=500Ω, VBAT=10V 11
Falling Slew Rate SRFALL 20 V/μs Ta=25°C, VCC=5V, RL=500Ω, VBAT=10V 11
Thermal Resistance Junction to Ambient (1s) θJA 143 °C/W HTSSOP-B20, 1s board (JESD51-3) 3
Thermal Resistance Junction to Ambient (2s2p) θJA 26.8 °C/W HTSSOP-B20, 2s2p board (JESD51-5, 7) 3
Junction to Top Characterization Parameter (1s) ΨJT 8 °C/W HTSSOP-B20, 1s board 3
Junction to Top Characterization Parameter (2s2p) ΨJT 4 °C/W HTSSOP-B20, 2s2p board 3

CAD (KiCad official)

  • Symbol: BD8379EFV-ME2
  • Footprint: Package_SO:TSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP2.15x3.35mm
  • 3D model: HTSSOP-20-EP, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.2 mm nominal TSSOP height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: bd8379efv-me2-etched.step / bd8379efv-me2-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bd8379efv-me2.step / bd8379efv-me2.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: ROHM Semicon datasheet (20 pp, sha256 fc31922510b7c2b4, retrieved 2026-10-23, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF