UA78S40(2006) Просмотр технического описания (PDF) - ON Semiconductor
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Компоненты Описание
производитель
UA78S40 Datasheet PDF : 7 Pages
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1000
VCC = 5.0 V
Ipk(sense) = VCC
Pin 10 = Gnd
Pin 9 = Vref
100
ton
1
0
UA78S40
3.2
CT = 0.001 mF
Ipk(sense) = VCC
Pin 3 = Gnd
2.4
1.6
toff
0.8
1.0
0.1
1.0
10
100
CT, OSCILLATOR TIMING CAPACITOR (nF)
Figure 2. Output Switch On/Off Time
versus Oscillator Timing Capacitor
0
0 5.0 10 15 20 25 30 35 40
VCC, SUPPLY VOLTAGE (V)
Figure 3. Standby Supply Current
versus Supply Voltage
1.6
VCC = 5.0 V
1.5 Pins 14, 15, 16 = VCC
Pins 10, 12 = Gnd
1.4 Pin 9 = Vref
1.3
1.2
1.1
1.0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
IE, EMITTER CURRENT (A)
Figure 4. Emitter−Follower Configuration
Output Switch Saturation Voltage
versus Emitter Current
1.2
VCC = 5.0 V
1.0
Pin 14 = VCC
Pins 3, 10, 12 = Gnd
Pin 9 = Vref
0.8
Darlington Connection
0.6
Forced Beta = 20
0.4
0.2
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
IC, COLLECTOR CURRENT (A)
Figure 5. Common−Emitter Configuration
Output Switch Saturation Voltage
versus Collector Current
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