BD6665FM Datasheet, PDF (1/2 Pages) Rohm – Spindle motor driver IC for CD-ROM/RW

00W095A
Spindle motor driver IC for CD-ROM/RW
BD6665FM
Description
The BD6665FM has achieved high-efficiency and
low power consumption due to the adoption of
MOSFET output and direct PWM drive.
Power save circuit, current limit circuit, FG three-
phase synthesis output, hall bias, reverse protection
circuit, short brake SW, and rotation direction
detection terminal are incorporated. The result is a
multi-function and high-performance IC.
Features
1) Direct PWM drive
2) Built-in power save circuit
3) Built-in current limit circuit
4) Built-in FG three-phase synthesis output
5) Built-in hall bias
6) Built-in reverse protection circuit
7) Low power consumption due to MOSFET output
8) Built-in short brake SW
9) Built-in rotation direction detection terminal
Applications
CD-ROM/RW
Dimension (Units : mm)
18.5±0.2
28
15
1
5.15±0. 1
14
0.8
0.35±0. 1
0.3Min.
0. 15
HSOP-M28
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Applied voltage (5V for power supply)
Applied voltage (for motor supply)
Power dissipation
Operating temperature range
Symbol
Vcc
VM
Pd
Topr
Storage temperature range
Tstg
Output current
IOMAX
∗1 Mounted on a glass epoxy board (70mm×70mm×1.6mm)
∗1 Derating:17.6mW/˚C for operation above Ta=25˚C.
∗2 Do not exceed Pd, ASO and Tj=150˚C.
Limits
7
15
2200 ^∗1
–20 ~ +75
–55 ~ +150 ^∗2
3000 ^*2
Unit
V
V
mW
˚C
˚C
mA
November, 2000