AN8428GAK [PANASONIC]
For 3.5inch HDD Motor Comb IC; 对于3.5英寸硬盘驱动器电机梳IC
| 型号： | AN8428GAK |
| 厂家： | 
PANASONIC |
| 描述： | For 3.5inch HDD Motor Comb IC |
| 文件： | 总4页 (文件大小：164K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
New
Reduce external components and improve reliability
For 3.5inch HDD Motor Comb IC／AN8428GAK
■ Overview
Unit : mm
AN8428GAK is motor comb IC for 3.5inch HDD.
By new retract circuit ,reduce external components and shorten the
brake time of the disk to improve reliability of HDD .
Spindle motor sensor less linear drive.
VCM linear drive , PWM-DAC control .
Built-in Retract , 12 V/5 V/3.3 V power monitor, 3.3 V-Regulator.
80-pin TQFP package with exposed heat think .
■ Features
●By new retract circuit ,reduce external components and shorten
the brake time 1/2 of the disk to improve reliability of HDD .
●Built-in shock sensor amplifier for mechanical shock protection
and 3.3 V regulator for logic semiconductor .
●10 dB acoustic noise reduction by trapezoidal current on spindle
motor drive .
HQFP080-P-1414
●80- pin TQFP package with the smallest thermal resistance in the
industry .
Meet to increase speed of HDD higher 30 % than previous.
■ Principle functions
(1)Spindle motor sensor less linear drive :2.7 A peak current drivers , Ron=1.1 Ω
(2)VCM linear drive : 1.8 A peak current , Ron=1.5 Ω
(3)Retract function exists
(4)Built in 12 V/5 V/3.3 V power monitor
(5)Built in shock sensor amplifier
(6)Built in 3.3 V regulator
■ Applications
3.5 inch HDD
The products and specification are subject to change without any notice. Please ask for the latest Product Standards to guarantee the satisfaction of your product requirements.
1.Kotari Yakemachi, Nagaokakyo, Kyoto, 617-8520 Japan
Tel. (075)951-8151
http://www.mec.panasonic.co.jp
M00389AE
New publication, effective from May.8.2000
■ Standard application
0.047 µF
10 µF
0.1 µF,18V
10 µF
2SB1073
Vcc5
BSTFLT
59
58
7,18,44,45
XN4502
57
78
10
100
GNDSUBA
54
POWER ON RESET
BOOSTER
XN4502
9
POR5VADJ
POR12VADJ
POR3.3VADJ
+
－
1800pF
3.3V out
50
0.047 µF
4.125K
0.68
70
8
+
－
3VREGCNTL
3VREGBG
TIMER
4.7µF
1.32K
0.01
µF
11
71
2
3
+
－
SHOCK SENSOR
SHKIN
1800pF
FILTER
SHKFLT
12
CPOR
VREF
RETRACT
VREF
79
SHKOUT
CPOR
0.022 µF
PORN
13
SHOCK AMP
VCC4
RETRACT
0.33 Ω
23,24
&
－
VREFOUT
75
VCMP
VCM
VCMREF
+
VREF
0.01 µF
62
VISENL
VISENH
1KΩ
X4
65
66
TEMP
50
THERMAL
WARNING
VISENS1
VFLTOUT
VCMINP
10k
5
6
0.01 µF
VOICE
COIL
MOTOR
15
4
VPCNTL
VFLTINP
VPCNTL
VCM MODE
PWM DAC
390pF
220K
1800pF
77
VIPWMH
VIPWML
VIPWMH
VIPWML
FAILSAFE
19
,20
－
VCMN
76
14
21,22
25,26
+
VREF
10k
GND-V
FAIL SAFE
RETRACT
R
RETRACT
X
16
RETRACT ADJ
RETPOWER
1µF
RETRACT
LOGIC
DEVICE
17
56
R
Y
52
SMODE1
SCNTL1
SDRVN
SPINDLE MODE
COMMUTATION
SPINDLE
SMODE1
69
68
33,
MA10702
SDRVU
SCNTL1
SCNTL2
SCNTL3
34
CURRENT
CONTROL
OUTPUT
STAGE
SCNTL2
SCNTL3
41,
42
67
SDRVV
SPINDLE
MOTOR
SIPWM
SENU
51
SIPWM
SENU
FILTER
74
72
SDRVW
SISENL
BEMF-
COMPARATOR
SDRVU
SDRVV
SDRVW
SENWIS
SENV
29,30
SENWIS
46
73
SENV
VCC5
47
28
SISENH
SISINK1
31
32
SISINK2
SPWMTC
220pF
53
0.18Ω
PWM
SISINK3
SISINK4
SISINK5
SISINK6
34k
35
36
37
1
55
48
49
43
0.047
µF
0.047
µ F
680pF
0.47 µF
■ Maximum Ratings
PARAMETER
SYMBOL
Ratings
- 0.3 6.0
unit
Supply voltage
～
V
V
Vcc3.3
Vcc5
+3.3
Supply voltage
+5V
Supply voltage
+12V
Output voltage
(Spindle)
V
- 0.3
- 0.3
6.0
～
13.5
Vcc12
～
V
V
ꢀ
- 0.3 ～15
V
SDRV
Output voltage
(VCM)
V
VCMN,VCMP
V
A
- 0.3
15
～
Spindle Motor
Peak Output Current
I
I
Ospeak
Ovpeak
3.0
Voice coil Motor
Peak Output Current
A
2.0
■ Supply voltage range
+3.3 VSupply voltage range
V
CC3.3
3.0 V
5.5 V
～
V
+5V
Supply voltage range
Supply voltage range
V
CC5
V
V
V
4.5 V
10.8 V
5.5 V
～
～
+12V
13.2 V
V
CCS12
V
10.8 V
10.8 V
13.2 V
13.2 V
Supply voltage range
Supply voltage range
+12V
+12V
～
～
CCV12
V
V
CCA12
■ Electrical Characteristics（Ta=25 ℃±2 ℃ unless otherwise specified ）
Conditions
typ
max
PARAMETER
SYMBOL
min
unit
Linear mode
1.1
1.1
3.0
3.0
+3.3
V
I CC3.3
－
mA
mA
Supply Current
I CC3.3 S
Sleep mode
Linear mode
Sleep mode
Linear mode
－
－
－
CC5
I
+5V
Supply Current
16.0
14.0
35.0
10.0
20.0
－
ICC5S
CC12
I
55.0
－
－
－
+12
V
mA
Supply Current
I CC12S
Sleep mode
［Power Monitor
Comparators］
12V Threshold
voltage
9.3
4.4
V
V
9.0
4.3
8.7
4.2
Vt12
5V Threshold
voltage
V
t5
■ Electrical Characteristics（Ta=25 ℃±2 ℃ unless otherwise specified ）
SYMBOL
Conditions
min
typ
max
unit
PARAMETER
［SPM block］
Total Output on
Resistance
Iout =2.7 A
0.65
5.1
1.1
Rds( on)
－
Ω
Voltage Ratio
SPWMFLT/SISENH
SP
K
4.8
0.33
V/V
5.4
Voltage at pin SISENH
for 100% duty cycle
V
100
0.348
0.376
0.200
V
Voltage at pin SISENH
for 50% duty cycle
V
50
0.160
0.18
V
V
Voltage at pin SISENH
for 5% duty cycle
V
5
0.026
0.018
－
－
Voltage at pin SISENH
for 0% duty cycle
V
0
2.0
mV
0.0
［VCM block］
Vretract Regulation
Supply OFF
VBEMF=2V
V
1.15
130
RET2
0.55
15
0.87
80
V
Irtrct2
mA
Irtrct2
Ratio
Ω
VCM=10.5
Current Ratio between
MSB／LSB
31.5
32
2
32.7
5
Ramp Input
VCMINP 20 μs
Time of Crossover
Distortion
s
μ
TCRO
－
I 2=IRVCM
at Duty Cycle =10%
I 1=IRVCM
at Duty Cycle=90%
RS=0.33,R 1=10k,R2
Ratio
Symmetry VCM
Drivers
VCMP , VCMN
2
1
I
I
1
1.07
1.03
mA/mA
mA/mA
0.93
0.97
=6.6k,
RL =10
Ω
I 2=IRVCM
at Duty Cycle =30%
Ratio
1
RVCM
I =I
Linearity VCM
Drivers
VCMP , VCMN
at Duty Cycle=70%
I 0=IRVCM
at Duty Cycle=50%
RS=0.33,R 1=10k,R2=6.6k,
2-
0
0
I I
1.0
=
1-
I I
RL =10
Ω
Total Resistance
(Source＋Sink＋Isolation)
RDSON25
1.0
0
Ω
1.5
28
－
VIPWMH& VIPWNL
at 50% Duty Cycle
R =0.33, R =10K,
VCM Output Drivers
Offset Current
-28
S
1
mA
Ios
2
R
L
=6.6 K, R =10
Ω
[Shock sensor]
Input Current of
Shock Sensor Amplifier
ISHKIN
Gmshk
-1
1
-
nA
－
Gm of Shock Sensor
Amplifier
mS
5.9
-
[3.3 V－Regulator]
Output voltage
Regulation
3.33
33
3.168
-
3.49
-
V
VCC3V3
Load Regulation
LOAD
I
=0 4mA
～
mV
VLDR
Δ
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PANASONIC
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