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ML4425CH Datasheet(PDF) 4 Page - Micro Linear Corporation

No. de pieza ML4425CH
Descripción Electrónicos  Sensorless BLDC Motor Controller
Download  16 Pages
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Fabricante Electrónico  MICRO-LINEAR [Micro Linear Corporation]
Página de inicio  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation

ML4425CH Datasheet(HTML) 4 Page - Micro Linear Corporation

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ML4425
ELECTRICAL CHARACTERISTICS
Unless otherwise specified,VDD = 12V ± 10%, RSENSE = 1W, CVCO = 10nF, CIOS = 100pF, RREF = 137kW,
TA = Operating Temperature Range (Notes 1, 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
REFERENCE
VREF
Total Variation
Line, Temp
6.5
6.9
7.5
V
PWM OSCILLATOR
Total Variation
CT = 1nF
28
kHz
Ramp Peak
3.9
V
Ramp Valley
1.7
V
Ramp Charging Current
?
µA
SPEED CONTROL LOOP
SPEED SET Input Voltage Range
0
VREF
V
SPEED FB Input Voltage Range
0
VREF
V
SPEED COMP Output Current
±5
±20
µA
SPEED SET Error Amp Transconductance
VSPEED SET = xV, VSPEED FB = yV
144
µ
START-UP
CAT Charging Current
C Suffix
0.68
0.98
µA
I Suffix
0.5
1.1
µA
CAT Threshold Voltage
1.4
1.7
V
CRT Charging Current
C Suffix
0.68
0.98
µA
I Suffix
0.5
1.1
µA
CRT Threshold Voltage
1.4
1.7
V
VOLTAGE CONTROLLED OSCILLATOR
Frequency Range
RVCO = 5V, SPEED FB = 6V
1.5
1.85
2.2
kHz
Frequency vs. SPEED FB
RVCO = 5V, 0.5V £ SPEED FB £ 7V
300
Hz/V
CURRENT LIMIT
ISENSE Gain
V(ILIMIT) £ 2.5V
4.5
5.0
5.5
V/V
One Shot OFF-Time
CIOS = 100pF
C Suffix
9
18
µs
I Suffix
9
20
µs
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which
the device could be permanently damaged. Absolute
maximum ratings are stress ratings only and functional
device operation is not implied.
VDD .......................................................................... 14V
Logic Inputs (, SPEED FB, BRAKE) .......... GND - 0.3 to 7V
All Other Inputs and Outputs .. GND -0.3V to VDD + 0.3V
Output Current (LA, LB, LC, HA, HB, HC) ............ ±50mA
Junction Temperature .............................................. 150ºC
Storage Temperature Range ...................... –65ºC to 150ºC
Lead Temperature (Soldering 10 sec.) ..................... 260ºC
Thermal Resistance (
qJA)
28-Pin Narrow PDIP ......................................... 48ºC/W
28-Pin SOIC ..................................................... 75ºC/W
32-Pin TQFP ..................................................... 80ºC/W
OPERATING CONDITIONS
Temperature Range
ML4425CX................................................. 0ºC to 70ºC
ML4425IX ............................................... –40ºC to 85ºC
VDD ......................................................... 10.8V to 13.2V


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