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參數資料
| 型號： | TDA5345HT |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 運動控制電子 |
| 英文描述： | 5 V spindle & VCM driver combo |
| 中文描述： | DISK DRIVE MOTOR CONTROLLER, 2 A, PQFP64 |
| 封裝： | LOW PROFILE, PLASTIC, TQFP-64 |
| 文件頁數： | 36/44頁 |
| 文件大小： | 213K |
| 代理商： | TDA5345HT |
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1999 June 10
36
Philips Semiconductors
Preliminary specification
5 V spindle & VCM driver combo
TDA5345HT
3. Spindle circuits
3-1 Spindle driver: (assuming that Resistor @ pin RefCurRes is exactly 33 k
)
3-2 Spindle current loop (assuming that Resistor @ pin RefCurRes is exactly 33 k
)
3-3 Spindle Fll Charge Pump (assuming that Resistor @ pin RefCurRes is exactly 33 k
)
t
HD
t
FINISH
clock to data hold time
last active clock to chip
select inactive on write
time between successive
serial port accesses
GbD
GbD
2
ns
ns
T
SCLK
/2
t
WAIT
GbD
5
CLOCK
cycles
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT.
R
DSon
I
StartMax
I
StartStep
I
StartRes
I
RUN
SR
1
SR
2
SR
3
SR
4
ACC
R_FB
total FET resistance
maximum start-up current
start-up current step
start-up current resolution
running current
fly-backs slew rate control
fly-backs slew rate control
fly-backs slew rate control
fly-backs slew rate control
relative accuracy on the 6
fly-backs slew-rate
max voltage on spinmotx
I
SPIN
= 620 mA
DAC6[5,0] = “011111”
1.5
620
20
mA
mA
bits
mA
5
5
continuous
FlyBackSlope[0,1] = “00”
FlyBackSlope[0,1] = “01”
FlyBackSlope[0,1] = “10”
FlyBackSlope[01] = “11”
300
34
70
143
290
+20
19
48
105
222
-20
26.5
59
124
256
mV/
μ
s
mV/
μ
s
mV/
μ
s
mV/
μ
s
%
V
fbmax
positive fly-back, I
<100 mA
neg. fly-back, I <100 mA
PorN = “0”, GbD
Vdd5+
0.05
-0.35 V
Vdd5+
0.2
Vdd5+
0.35
-0.05 V
250
V
V
fbmin
I
BP
min voltage on spinmotx
brake power leakage
-0.2 V
V
5
nA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
ACC
StCur
spindle start-up current
accuracy
current relative accuracy
between each phase
OTA transconductance
I
StUp
> 400 mA
-6
+6
%
ACCR
StCur
I
StUp
> 400 mA
-5
+ 5
%
gm
OTA
GbD
35
50
65
μ
A/V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
I
ch/disch
SYM
Cur
charge/discharge current
charge/discharge currents
symetry
rise/Fall time
465
0.98
500
535
1.02
μ
A
t
r/f
GbD
1
2
ns
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT.
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