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REV. B

Structure

Silicon Monolithic Integrated Circuit

Product series

PWM Driver for combi drive

Type

BD7790KVT

Function

・3-phase-sensor-less system, therefore don’t need three hall sensors

for spindle motor driver.

特

長

・Stability high-speed start from the state of the stop for spindle motor driver.

○Absolute maximum ratings

Parameter

Symbol

Limits

Unit

Power MOS supply voltage

PVcc

6

V

Control circuit power supply voltage

Vcc

6

V

Maximum driver output current

IoMAX

3 ＃1

A

Power dissipation

Pd

1.37 ＃2

W

Operating temperature range

Topr

-30～85

℃

Storage temperature range

Tstg

-55～150

℃

Joint part temperature

Tjmax

150

℃

#1 The current is guaranteed 3.0A in case of the current is turned on/off in a duty-ratio of less than 1/10 with a maximum

on-time of 5ms and when short brake.

#2 PCB (70mm×70mm×1.6mm,occupied copper foil is less than 3%,glass epoxy standard board) mounting.

Reduce power by 11.0mW for each degree above 25℃.

○Recommended operating conditions(Ta=-30～+85℃)

〔Set the power supply voltage taking allowable dissipation into considering〕

Parameter

Symbol

MIN

TYP

MAX

Unit

Power MOS supply voltage

PVcc

4.0

5.0

5.5

V

Control circuit power supply voltage

Vcc

4.0

5.0

5.5

V

This product isn’t designed for protection against radioactive rays.