LND494 データシートの表示（PDF） - Linear Dimensions Semiconductor
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LND494 Datasheet PDF : 6 Pages
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LND494
ABSOLUTE MAXIMUM RATINGS
Rating
Supply voltage, Vcc
Amplifier input voltage
Collector output voltage
Collector output current
Operating free-air temperature
range
Storage temperature range
Lead temperature 1,6 mm from
case for 10 seconds
Value
41
Vcc+0.3
41
250
0 to 70
-65 to 150
260
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply voltage, Vcc
Amplifier input voltage, Vi
Collector output voltage,Vo
Collector output current(each
transistor)
Current into feedback terminal
Timing capacitor,CT
Timing resistor, RT
Oscillator Frequency
Operating free-air temperature,
TA
Value
MIN
7
-0.3
0.47
1.8
1
0
MAX
40
Vcc-2
40
200
0.3
10000
500
300
70
FUNCTIONAL BLOCK DIAGRAM
RT
CT
DEAD
TIME
CONTROL
0.1V
OSCILLATOR
DEAD TIME CONTROL
COMPARATOR
OUTPUT CONTROL
C1
NON -
INVERTING
INPUT
INVERTING
INPUT
NON -
INVERTING
INPUT
INVERTING
INPUT
ERROR
+ AMPLIFIER
1
-
ERROR
+ AMPLIFIER
2
-
PWM
COMPARATOR
FEEDBACK
PULSE STEERING
FLIP - FLOP
REFERENCE
Unit
V
mA
ºC
Unit
V
mA
nF
kΩ
kHz
ºC
C1
Q1
E1
C2
Q2
E2
VCC
VREF
GND
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com •
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