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L292 Datasheet

SWITCH-MODE DRIVER FOR DC MOTORS

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L292
SWITCH-MODE DRIVER FOR DC MOTORS
DRIVING CAPABILITY : 2 A, 36 V, 30 KHz
2 LOGIC CHIP ENABLE
EXTERNAL LOOP GAIN ADJUSTEMENT
SINGLE POWER SUPPLY (18 TO 36 V)
INPUT SIGNAL SYMMETRIC TO GROUND
THERMAL PROTECTION
DESCRIPTION
The L292 is a monolithic LSI circuit in 15-lead
Multiwatt ® package. It is intended for use, together
with L290 and L291, as a complete 3-chip motor
positioning system for applications such as car-
riage/daisy-wheel position control in type-writes.
The L290/1/2 system can be directly controlled by
a microprocessor.
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Vs
Vi
Vinhibit
Io
Ptot
Tstg
Power Supply
Input Voltage
Inhibit Voltage
Output Current
Total Power Dissipation (Tcase = 75 °C)
Storage and Junction Temperature
Multiwatt 15
ORDER CODE : L292
Value
36
- 15 to + Vs
0 to Vs
2.5
25
- 40 to + 150
Unit
V
V
V
A
W
°C
TRUTH TABLE
Vinhibit
Pin 12
Pin 13
LL
LH
HL
HH
March 1993
Output Stage
Condition
Disabled
Normal Operation
Disabled
Disabled
CONNECTION DIAGRAM (top view)
1/12


STMicroelectronics Electronic Components Datasheet

L292 Datasheet

SWITCH-MODE DRIVER FOR DC MOTORS

No Preview Available !

L292
THERMAL DATA
Symbol
Rth-j-case
Parameter
Thermal resistance junction-case
Value
Max 3
Unit
°C/W
ELECTRICAL CHARACTERISTICS (Vs = 36 V, Tamb = 25 °C, fosc = 20 KHz unless otherwise specified)
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
Vs Supply Voltage
Id Quiescent Drain Current
Vos Input Offset Voltage (pin 6)
Vinh Inhibit Low Level (pin 12, 13)
Inhibit High Level (pin 12, 13)
Vs = 20 V (offset null)
Io = 0
18 36 V
30 50 mA
±350 mV
2V
3.2 V
Iinh Low Voltage Condition
High Voltage Conditions
Ii Input Current (pin 6)
Vi Input Voltage (pin 6)
Io Output Current
VD Total Drop Out Voltage
Vinh(L) = 0.4 V
Vinh(H) = 3.2 V
Vl = -8.8 V
Vl = +8.8 V
Rs1 = Rs2 = 0.2Io = 2A
Io = -2A
Vl = ± 9.8 V Rs1 = Rs2 = 0.2
(inluding sensing Io = 2 A
resistors)
- 100 µA
10 µA
-1.8 mA
0.5 mA
9.1 V
-9.1 V
±2 A
5V
VRS
Sensing Rsistor Voltage
Drop
Tj = 150°C
Io = 1 A
Io = 2 A
3.5 V
0.44 V
Io Transconductance
Vi
fosc Frequency Range (pin 10)
Rs1 = Rs2 =0.2
Rs1 = Rs2 = 0.4
205 220 235 mA/V
120 mA/V
1 30 KHz
BLOCK DIAGRAM AND TEST CIRCUIT
2/12


Part Number L292
Description SWITCH-MODE DRIVER FOR DC MOTORS
Maker STMicroelectronics
Total Page 12 Pages
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