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L6238S Datasheet(PDF) 7 Page - STMicroelectronics

Part # L6238S
Description  12V SENSORLESS SPINDLE MOTOR CONTROLLER
PDF  31 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6238S Datasheet(HTML) 7 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS (Continued)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
BRAKE DELAY
Vchrg
Capacitor Charge Voltage
RT = 50K
8.8
9.6
10.5
V
Iin
Input Current
Vin = 5.0V
500
nA
Iout3
Source Current
VA = 10.5V
0.5
mA
VThres
Delay Timer Low Trip Threshold
1.2
1.8
2.8
V
CHARGE PUMP
Vout
Storage Capacitor Output
Voltage
VA = 10.5V; Iout = 500
µA17
V
Fcp
Charge Pump Frequency
140
450
KHz
Iin
Vstorage Input Current (Run
Mode)
Vstorage = 12V; VA =Vlogic =0
25
µA
Ibrkdly
Vstorage Leakage Current
(Brake Delay Mode)
Vstorage = 12V; VA =Vlogic = 0
0.4
1
µA
Ibrake
Vstorage Leakage Current
(Brake Mode)
Vstorage = 12V; VA =Vlogic = 0
0.1
1
µA
SEQUENCE INCREMENT
tseq
Time Between Rising Edges
1
µs
OUTPUT TRANSCONDUCTANCE AMPLIFIER Note: Measure at OTA Comp. pin.
Voh
Voltage Output High
VA = 10.5V
10
V
VoutL
Output Voltage
2.0
V
Isource
Output Voltage
40.0
0.5
V
Isink
Output Sink Current
40.0
µA
LOGIC SECTION
VinH
VinL
Input Voltage (All Inputs
Except Run/Brake
Vlogic = 4.5 to 5.5V
3.5
1.5
V
V
VinH
VinL
Run/Brake Input Voltage
Vlogic = 4.5 to 5.5V
2.0
1.0
V
V
IinH
IinL
Input Current
-1.0
1.0
µA
mA
VoutL
VinL
Output Voltage
Vsink = 2.0mA
Vsource = 2.0mA
4.5
0.5
V
V
Fsys
System Clock Frequency
8.0
12.0
MHz
toff/ton
Clock ON/OFF Time
20
ns
Tdelay (2)
Tdelay (1)
Tdelay (0)
Commutation Phase Delay,
in Electrical Degrees
1
0
1
2.0
1
0
0
9.4
1
1
1
18.80
1
1
0
20.68
0
0
1
22.56
0
0
0
24,44 (*)
0
1
1
26.32
0
1
0
28.20
(*) Input Default
Phase Delay Truth Table
L6238S
7/31



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