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UC2842BN View Datasheet(PDF) - Motorola => Freescale

Part Name
Description
Manufacturer
UC2842BN
Motorola
Motorola => Freescale Motorola
UC2842BN Datasheet PDF : 16 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
2.55 V
2.50 V
UC3842B, 43B UC2842B, 43B
Figure 5. Error Amp Small Signal
Transient Response
Figure 6. Error Amp Large Signal
Transient Response
VCC = 15 V
3.0 V
AV = –1.0
TA = 25°C
VCC = 15 V
AV = –1.0
TA = 25°C
2.5 V
2.45 V
0.5 µs/DIV
2.0 V
1.0 µs/DIV
Figure 7. Error Amp Open Loop Gain and
Phase versus Frequency
100
0
VCC = 15 V
80
Gain
VO = 2.0 V to 4.0 V
RL = 100 K
30
TA = 25°C
60
60
40
90
Phase
20
120
0
– 20
10
150
180
100
1.0 k
10 k
100 k 1.0 M 10 M
f, FREQUENCY (Hz)
Figure 8. Current Sense Input Threshold
versus Error Amp Output Voltage
1.2
VCC = 15 V
1.0
0.8
TA = 25°C
0.6
TA = 125°C
0.4
TA = –55°C
0.2
0
0
2.0
4.0
6.0
8.0
VO, ERROR AMP OUTPUT VOLTAGE (V)
Figure 9. Reference Voltage Change
0
– 4.0
versus Source Current
ÄÄÄÄÄÄÄÄ VCC = 15 V
– 8.0
–12
ÄÄÄÄ TA = 125°C
ÄÄÄÄÄÄ TA = –55°C
–16
– 20
ÄÄÄÄÄÄÄÄ TA = 25°C
– 24
0
20
40
60
80
100
120
Iref, REFERENCE SOURCE CURRENT (mA)
Figure 10. Reference Short Circuit Current
110
versus Temperature
ÄÄÄÄ VCC = 15 V
ÄÄÄÄ RL 0.1
90
70
50
– 55 – 25
0
25
50
75 100 125
TA, AMBIENT TEMPERATURE (°C)
MOTOROLA ANALOG IC DEVICE DATA
5
 

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