L6245 Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
L6245 Datasheet PDF : 15 Pages
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L6245
ELECTRICAL CHARACTERISTICS (VS = 5V, Tj = 25°C; unless otherwise specified)
Power Supply Characteristics
Symbol
Parameter
Test Condition
VS
ID-READY
ID_IDLE
ID_SLEEP
Supply Voltage
Quiescent Current Dissipation
VS = VP = VCC
No load attached VCM and Spin
drivers enab.
VCM driver disabled Spin driver
enabled
VCM and Spin drivers disabled
VCM Driver (Notes 1, 2)
Min.
4.5
Typ.
Max.
5.5
25
20
4
Units
V
mA
mA
mA
IOS
IOT
RDS(on)
RDS(on)
RDS(on)
VF
Vjump
VDB
VCMOS
Maximum Load Current
(Seeking)
Maximum Load Current
(Traking)
Source & Sink Out ON
Resistance
Sink Out On Resistance
Sink Out On Resistance
Body Diode Forward Drop
Jump Discontinuity (**)
Deadband Discontinuity (*)
Offset (***)
Output Devices A, B, E, F (Fig. 1)
Output Devices C, D (Fig. 1)
Output Devices A, B, E, F
Tj = 125°C (Fig. 1)
Output Devices C, D
Tj = 125°C (Fig. 1)
Parking Device Tj = 125°C
I = 0.3A
Rsense = 2.01Ω
Rsense = 2.01Ω
Rsense = 2.01Ω
0.3
A
0.1
A
1
Ω
2.4
Ω
12
Ω
1.5
V
30
mV
6
mV
40
mV
(*) The range of input voltages applied to the VCM_CMD pin (with respect to VREF) for which only negligible current is present in the load. This
deadband voltage (VDB) can be expressed either in mV or in LSBs, where one LSB is equal to 11.7mV.
(**) A condition in which the transfer characteristic (i.e., load current vs. VCM_CMD-VREF) exhibits a slope which is significantly grater than the
desired value. The range of currents for which this condition exists is termed IJUMP. This current is referred o the VCM_CMD input according
to the following equation: VJUMP = IJUMP x 3 x RSENSE
In this document, RSENSE is assumed to be 2.01Ω. VJUMP can be expressed either in mV or in LSBs, where one LSB is equal to 11.7mV.
(***) The value of VCM_CMD (with respect to VREF) for which the load current is zero. In parts which exihibit a DEADBAND dicontinuity, the
offset is defined to be at the midpoint of the deadband region. RSENSE is assumed to br 2.01Ω.
VCM Current sense amplifier (ISENSE)
Vof f
G
PSRR
BW
VOR
Output Offset Voltage
Closed Loop Voltage Gain
Power Supply Rejection Ratio
Banwwidth
Output Range
VCM_RS2 Shorted to GND O/S is
V(Isense) - Vref
3V/V nominal
at DC
VCC = 4.5V (note 4)
–50
2.85
50
200
–0.2
50
mV
3.15 V/V
dB
KHz
3.5
V
VCM Full wave rectifying amplifier
IB
Iimp
G
PSRR
GBW
CMR
VOR
Input Bias Current
Input Impedance
Closed Loop Gain
Power Supply Rejection Ratio
Unity Gain Bandwidth
Input Common Mode Range
Output Range
VCM_CMD = Vref
Impedance seen at VCM_CMD
wrt Vref
at DC
VCM_CMD pin
5
0.320
50
200
0.3
0
2
µA
KΩ
0.347 V/V
dB
KHz
3.7
V
1
V
6/15
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