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AMtek

AM9858 Datasheet Preview

AM9858 Datasheet

180 Deg BLDC Motor Driver

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AM9858
Optical Disc ICs
180 Deg BLDC Motor Driver for Optical
Storage AM9858
The AM9858 is developed to drive Brush-less spindle motor. This IC has braking select. Forward
rotation mode and braking mode are able to be selected by two control terminals.
Applications
CD-ROM, DVD-ROM, DVD-RW , BD-ROM and car DVD drive
Features
1) Silent Direct-PWM-driving system
2) Current limit circuit
3) Built in FG-output
4) Hall Bias circuit
5) Reverse rotation detect and protection
6) Low consumption
7) Short brake
8) Built-in thermal-shut-down circuit
Absolute Maximum Ratings (Ta = 25)
Parameter
5V voltage Supply
Motor power supply
Thermal Resistance Junction-ambient
Spindle output current
Power dissipation
Operating temperature
Storage temperature
Symbol
Vcc1/Vcc2
VM
ja
Io
Pd
Topr
Tstg
Limits
7
15
*57
*1.6
*2.2
-40 to +85
**-40 to +150
Unit
V
V
oC/W
A
W
*Note : Absolute maximum ratings are those values beyond which the device could be
permanently damaged. Absolute maximum ratings are stress ratings only and functional device
operation is not implied.
*70mm×70mm×1.6mm glass epoxy board.
*Reducing in done at 17.6mW/for operating above Ta = 25.
**Do not exceed Pd ASO and Tj = 150.
Recommended operating conditions
(Set the power supply voltage taking allowable dissipation into considering)
Parameter
Symbol
Min
Typ
Max Unit
5V Power supply
Motor power supply
Spindle output current
PWM carrier frequency
Vcc1/Vcc2
4
VM VCC1/VCC2
Io -
Fosc
-
5
12
1.0
130
6V
14 V
1.5 A
- KHz
http://www.amtek-semi.com
Specifications subject to change without notice
-1-
Jun. 2013 V1.6P




AMtek

AM9858 Datasheet Preview

AM9858 Datasheet

180 Deg BLDC Motor Driver

No Preview Available !

AM9858
Optical Disc ICs
Electrical Characteristics
(Unless otherwise specified, Ta = 25, VCC1=VCC2= 5V, VM=12V, RSP=0.44, VREF=1.65V)
Parameter
Symbol
Min
Limit
Typ Max
Unit
Conditions
Common
Sleep current
ISC
Quiescent current
MUTE1/MUTE2
ICC
VMU1L/
terminal low voltage
VMU2L
MUTE1/MUTE2
VMU1H/
terminal high voltage
VMU2H
MUTE1/MUTE2
IMU1/
terminal input current
IMU2
PWM carrier frequency
Fosc
VREF input voltage
range
VinREF
VREF terminal input
current
IinREF
Spindle driver block < Hall bias>
- 500 -
uA MU1=0V
- 4 - mA MU1=5V, MU2=5V
0 - 0.8 V MU1/MU2
2.5 - 5 V MU1/MU2
- 85 200 uA MU1/MU2=5V
- 130 - KHz OSC: with 68pF
1.0 - 3.0 V
- 90 - uA VREF=1.65V
HB output voltage
VHB
0.8 1.1 1.4
2.1 2.5 2.8
V IHB = 10mA
V IHB = 30mA
HB terminal sink current
IHB
- - 30 mA MU1=5V
Spindle driver block <Hall amplifier>
Common mode input
range
Input signal level
VHcom
1.3
-
3.7
V
HU+, HU-, HV+, HV-,
HW+, HW-
VHmin
60 -
-
mVp-p
HU+, HU-, HV+, HV-,
HW+, HW-
Spindle driver block <Torque control>
Output on resistance
RDSON
- 2.0 -
Io=0.5[A], VM=12V
Output on resistance
Control voltage dead
zone-
Control voltage dead
zone+
Control gain
Control limit 1F
Control limit 1R
RDSON
VDZ-
VDZ+
Gvo
Vlim1F
Vlim1R
-
-80
0
0.85
0.46
0.28
3.0
-40
+40
1.0
0.55
0.33
-
0
+80
1.15
0.615
0.38
Io=0.25[A], VM=5V
mV SPIN<VREF [REVERSE]
mV VREF<SPIN [FORWARD]
V/V Gio=Gvo/Rs[A/V]
V
Ilim1F=Vlim1F/Rs
[FORWARD] MU2=0V
V
Ilim1R=Vlim1R/Rs
[REVERSE]
This product is not designed for protection against radioactive rays.
Hall sensor power supply is recommended to be 5V to ensure Hall input range keeps
1.3Vmin ~3.7V max at Ta= -40’c~85’c condition.
http://www.amtek-semi.com
Specifications subject to change without notice
-2-
Jun. 2013 V1.6P


Part Number AM9858
Description 180 Deg BLDC Motor Driver
Maker AMtek
Total Page 16 Pages
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