UTCA9849 Datasheet, PDF (1/11 Pages) Unisonic Technologies – 3-phase motor driver for CD-ROMs

UTC A9849 LINEAR INTEGRATED CIRCUIT
3-phase motor driver for
CD-ROMs
DESCRIPTION
The UTC A9849 is ICs developed for CD-ROM
spindle motor drives. These ICs possess a short brake
and reverserotation brake for two types of brake
functions, and also contain FG output and rotation
direction detection (FR) circuits,making them
high-functionality and high-performance ICs.
FEATURES
* Three-phase, full-wave, pseudo-linear drive system.
* Built-in power save and thermal shutdown functions.
* Built-in current limiter and Hall bias circuits.
* Built-in FG output.
* Built-in rotation direction detector.
* Built-in reverse rotation prevention circuit.
* Built-in short brake pin.
HSOP-28
APPLICATION
* CD-ROM, CD-R, CD-RW, DVD-ROM, and
DVD-RAM
ABSOLUTE MAXIMUM RATINGS(Ta =25°C )
PARAMETER
SYMBOL
Applied Voltage ( with 5V Power Supply)
Vcc
Applied Voltage ( motor Power Supply1 )
VM1
Applied Voltage ( motor Power Supply2)
VM2
Power Dissipation
Pd
Operating Temperature
Topr
Storage Temperature
Tstg
Output Current
Io
Note 1:Reduced by 17.6mW for increase for Ta of 1°C over 25°C
Note 2:Tj should not exceed 150°C
Note 3:Tj should not exceed Pd or ASO value.
VALUE
7
16
16
2200(note1)
-20 ~ 75
-55 ~ 15 (Note 2)
1300 (Note 3)
UNIT
V
V
V
mW
°C
°C
mA
RECOMMENDED OPERATING CONDITIONS(Ta =25°C )
PARAMETER
SYMBOL
MIN
Power Supply Voltage
Vcc
4.25
VM1
3.0
VM2
3.0
MAX
5.5
15
15
UNIT
V
V
V
UTC UNISONIC TECHNOLOGIES CO., LTD. ¹
QW-R109-006,A