參數(shù)資料
型號(hào)： 78S40
廠商： ON SEMICONDUCTOR
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 抗輻射高效，5安培開(kāi)關(guān)穩(wěn)壓器
文件頁(yè)數(shù)： 4/8頁(yè)
文件大?。?/td> 124K
代理商： 78S40
μ
A78S40
4
MOTOROLA ANALOG IC DEVICE DATA
Figure 1. Output Switch On/Off Time
versus Oscillator Timing Capacitor
Figure 2. Standby Supply Current
versus Supply Voltage
Figure 3. Emitter–Follower Configuration
Output Switch Saturation Voltage
versus Emitter Current
CT, OSCILLATOR TIMING CAPACITOR (nF)
0.1
1.0
10
100
,
s
μ
o
t
VCC = 5.0 V
Ipk(sense) = VCC
Pin 10 = Gnd
Pin 9 = Vref
ton
toff
VCC, SUPPLY VOLTAGE (V)
0
5.0
10
15
20
25
30
35
40
,
C
I
CT = 0.001
μ
F
Ipk(sense) = VCC
Pin 3 = Gnd
IE, EMITTER CURRENT (A)
,
C
V
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
VCC = 5.0 V
Pins 14, 15, 16 = VCC
Pins 10, 12 = Gnd
Pin 9 = Vref
IC, COLLECTOR CURRENT (A)
,
C
V
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
VCC = 5.0 V
Pin 14 = VCC
Pins 3, 10, 12 = Gnd
Pin 9 = Vref
Darlington Connection
Figure 4. Common–Emitter Configuration
Output Switch Saturation Voltage
versus Collector Current
1000
100
10
1.0
3.2
2.4
1.6
0.8
0
1.6
1.5
1.4
1.3
1.2
1.1
1.0
1.2
1.0
0.8
0.6
0.4
0.2
0
Forced Beta = 20
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