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参数资料
| 型号： | L6245 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | VOICE COIL MOTOR CONTROLLER, 1.5 A, PQFP64 |
| 封装： | PLASTC, QFP-64 |
| 文件页数： | 12/15页 |
| 文件大小： | 1025K |
| 代理商： | L6245 |
ELECTRICAL CHARACTERISTICS (VS = 5V, Tj = 25
°C; unless otherwise specified)
Power Supply Characteristics
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Units
VS
Supply Voltage
VS = VP = VCC
4.5
5.5
V
ID-READY
ID_IDLE
ID_SLEEP
Quiescent Current Dissipation
No load attached VCM and Spin
drivers enab.
VCM driver disabled Spin driver
enabled
VCM and Spin drivers disabled
25
20
4
mA
VCM Driver (Notes 1, 2)
IOS
Maximum Load Current
(Seeking)
Output Devices A, B, E, F (Fig. 1)
0.3
A
IOT
Maximum Load Current
(Traking)
Output Devices C, D (Fig. 1)
0.1
A
RDS(on)
Source & Sink Out ON
Resistance
Output Devices A, B, E, F
Tj = 125
°C (Fig. 1)
1
RDS(on)
Sink Out On Resistance
Output Devices C, D
Tj = 125
°C (Fig. 1)
2.4
RDS(on)
Sink Out On Resistance
Parking Device Tj = 125
°C12
VF
Body Diode Forward Drop
I = 0.3A
1.5
V
Vjump
Jump Discontinuity (**)
Rsense = 2.01
30
mV
VDB
Deadband Discontinuity (*)
Rsense = 2.01
6mV
VCMOS
Offset (***)
Rsense = 2.01
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 2.01
. 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 2.01
.
VCM Current sense amplifier (ISENSE)
Voff
Output Offset Voltage
VCM_RS2 Shorted to GND O/S is
V(Isense) - Vref
–50
50
mV
G
Closed Loop Voltage Gain
3V/V nominal
2.85
3.15
V/V
PSRR
Power Supply Rejection Ratio
at DC
50
dB
BW
Banwwidth
200
KHz
VOR
Output Range
VCC = 4.5V (note 4)
–0.2
3.5
V
VCM Full wave rectifying amplifier
IB
Input Bias Current
VCM_CMD = Vref
2
A
Iimp
Input Impedance
Impedance seen at VCM_CMD
wrt Vref
5K
G
Closed Loop Gain
0.320
0.347
V/V
PSRR
Power Supply Rejection Ratio
at DC
50
dB
GBW
Unity Gain Bandwidth
200
KHz
CMR
Input Common Mode Range
VCM_CMD pin
0.3
3.7
V
VOR
Output Range
0
1
V
L6245
6/15
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