HDD motor. AN8428GAK Datasheet

AN8428GAK motor. Datasheet pdf. Equivalent

Part AN8428GAK
Description Driver for 3.5inch HDD motor
Feature New Reduce external components and improve reliability For 3.5inch HDD Motor Comb IC/AN8428GAK ■ O.
Manufacture Panasonic
Datasheet
Download AN8428GAK Datasheet



AN8428GAK
New
Reduce external components and improve reliability
For 3.5inch HDD Motor Comb ICAN8428GAK
Overview
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 .
Unit : mm
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 .
80- pin TQFP package with the smallest thermal resistance in the
industry .
Meet to increase speed of HDD higher 30 % than previous.
HQFP080-P-1414
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
M00389AE
Tel. (075)951-8151
http://www.mec.panasonic.co.jp
New publication, effective from May.8.2000



AN8428GAK
Standard application
0.047 µF
10 µF
XN4502
2SB1073
Vcc5
100 XN 4502
GNDSUBA
54
59 58
0.1 µF,18V
BSTFLT
57
78
BOOSTER POWER ON RESET
3.3V out
4.7 µ F
0.68 50
1.32K
0.047 µF
4.125K
SHOCK SENSOR
VREF
FILTER
2
3
PORN
70
3VREGCNTL
3VREGBG
71
SHKIN
SHKFLT
79
SHKOUT
13 SHOCK AMP
VREFOUT 75
0.01 µF
VREF
TIMER
RETRACT
RETRACT
&
VCM
VCC4
VCMREF
TEMP 50
THERMAL
WARNING
VPCNTL
VIPW MH
VIPW ML
RETRACT
LOGIC
DEVICE
SMODE1
SCNTL1
SCNTL2
SCNTL3
SIPW M
SENU
SENWIS
SENV
VCC5
10k
15
VPCNTL
VFLTINP 4
1800pF
77
VIPW MH
VIPW ML
FAILSAFE
76
14
1µF
VCM MODE
PWM DAC
FAIL SAFE
RETRACT
52
SMODE1
SCNTL1 69
SCNTL2 68
SCNTL3 67
SPINDLE MODE
COMMUTATION
SIPWM 51
SENU
74
SENWIS
BEMF-
72 COMPARATOR
SENV
73
SPW MTC
53
PWM
34k 220pF
VREF
SPINDLE
CURRENT
CONTROL
FILTER
SDRVU
SDRVV
SDRVW
10 µF
7,18,44,45
10
+
+
+
VREF
9 POR5VADJ
8 POR12VADJ
11 POR3.3VADJ
1800pF
0.01 µF
1800pF
12 CPOR
CPOR
0.022 µF
23,24
VCMP
0.33
+
62
VISENL
X4 65 VISENH
1K
66 VISENS1
5 VFLTOUT
6 VCMINP
10k
VOICE
0.01 µF
COIL
MOTOR
390pF
220K
19
,20 VCMN
+ 21,22
25,26
GND-V
RETRACT
16 RETRACT ADJ
17 RETPOWER
OUTPUT
STAGE
56 SDRVN
33, SDRVU
34
41,
42 SDRVV
29,30
SDRVW
46 SISENL
47 SISENH
28 SISINK1
31 SISINK2
32 SISINK3
35 SISINK4
36
SISINK5
37
SISINK6
RX
RY
MA10702
SPINDLE
MOTOR
0.18
1 55
48 49
43
680pF
0.047
µF
0.047
µF
0.47 µ F





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