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L6245 Datasheet(PDF) 7 Page - STMicroelectronics

Part # L6245
Description  5V HARD DISK DRIVE POWER COMBO
PDF  15 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6245 Datasheet(HTML) 7 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS (Continued)
VCM DAC (Notes 5, 6)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Units
Res
Resolution
8
bit
N.L.
Differential Nonlinearity
±0.5
LSB
I.N.L.
Integral Nonlinearity
±0.5
LSB
CT
Conversion Time
From 50% point of WR falling to
1% settling
2
µs
ZO
Output Z
100
Ω
FSTC
Full Scale Temp. Coeff.
200
ppm/
°C
VOH
High Output Voltage
Relative to Vref Input Code = 7Fh
1.46
1.52
V
VOL
Low Output Voltage
Relative to Vref Input Code = 80h
–1.53
–1.47
V
VZSO
Zero Scale Offset
Relative to Vref Input Code = 00
±10
mV
Over velocity detector, coil voltage sense amplifier
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Units
VO
Output Offset Voltage
VCM+ = VCM–, within input
common mode range.
Measure wrt to Vref
–50
+50
mV
IBC
Input Bias Current
(Note 3)
10
µA
G
Closed Loop Voltage Gain
Av = 0.25V/V nominal
0.242
0.258
V/V
PSRR
Power Supply Rejection Ratio
at DC
50
dB
BW
Bandwidth
200
KHz
CMR
Input Common Mode Range
Above and below these values
the op amp will be in saturation
and will not invert sign.
0VPOWER
V
VDR
Input Differential Range
0
VPOWER
V
VOR
Output Range
0.3
3.5
V
IO
Output Current
æ400
µA
Over velocity detector, coil current sense amplifier
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Units
VO
Output Offset Voltage
VCM_RS1 shorted to GND for:
(a) VCM_CMD < Vref and
b) VCM_CMD > Vref. Measure wrt
Vref
–50
+50
mV
G
Closed Loop Voltage Gain
Av = 2.5V/V nominal
2.425
2.575
V/V
PSRR
Power Supply Rejection Ratio
at DC
50
dB
Bw
Bandwidth
200
KHz
CMR
Input Common Mode Range
–0.1
2
V
VR
Output Range
0.5
3.5
V
IO
Output Current
+400
mA
L6245
7/15



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