Description
BD6387xEFV series are the high-grade type that provides the highest function and highest reliance in the ROHM stepping motor driver series.
As for its basic function, it is a low power consumption bipolar PWM constant current-drive driver with power BD63877/BD63875/BD63873EFV are CLK-IN type drivers and BD63876/BD63874/BD63872EFV are PARALLEL-IN type drivers. There are excitation modes of FULL STEP & HALF STEP (2 kinds), QUARTER STEP mode, and for current decay mode, the ratio of FAST DECAY & SLOW DECAY can be freely set, so the optimum control conditions for every motor can be realized. In addition, being able to drive with one system of power supply makes contribution to the set design’s getting easy.

FEATURE
1) Single power supply input (rated voltage of 36V)
2) Rated output current:(DC) 1.0A, 1.5A, 2.0A
3) Low ON resistance DMOS output
4) CLK-IN drive mode (BD63877/63875/63873EFV)
5) PARALLEL-IN drive mode (BD63876/63874/63872EFV)
6) PWM constant current control (other oscillation)
7) Built-in spike noise cancel function (external noise filter is unnecessary)
8) Full-, half (two kinds)-, quarter-step functionality
9) Current decay mode switching function (linearly variable FAST/SLOW DECAY ratio)
10) Normal rotation & reverse rotation switching function (BD63877/63875/63873EFV)
11) Power save function
12) Built-in logic input pull-down resistor
13) Power-on reset function (BD63877/63875/63873EFV)
14) Thermal shutdown circuit (TSD)
15) Over current protection circuit (OCP)
16) Under voltage lock out circuit (UVLO)
17) Over voltage lock out circuit (OVLO)
18) Ghost Supply Prevention (protects against malfunction when power supply is disconnected)
19) Electrostatic discharge: 8kV (HBM specification)
20) Adjacent pins short protection
21) Inverted mounting protection
22) Microminiature, ultra-thin and high heat-radiation (exposed metal type) HTSSOP-B28 package
23) Pin-compatible line-up (BD63877/63875/63873EFV, BD63876/63874/63872EFV)

APPLICATION
   PPC, multi-function printer, laser beam printer, ink jet printer, monitoring camera, WEB camera, sewing machine, photo printer, FAX, scanner, mini printer, toy, and robot etc.