UC3844-D08-T UTC [Unisonic Technologies], UC3844-D08-T Datasheet - Page 6

• Manufacturer Part Number: UC3844-D08-T
• Description: HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
• Manufacturer: UTC [Unisonic Technologies]

UC3844/45
100
100
5.0
2.0
1.0
-20
50
20
10
80
60
40
20
TYPICAL CHARACTERISTICS
0
10k
10
Note: Output Switches At
One-Half The Oscillator
Frequency
Error Amp Open Loop Gain Phase vs. Frequency
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
Timing Resistor vs. Oscillator Frequency
20k
100
Oscillator Frequency, I
1.0k
50k
Gain
Frequency, f (Hz)
100k
10k
200k
OSC
100k
V
V
R
T
A
CC
OUT
L
= 25℃
= 100k
(Hz)
= 15V
= 2.0V ~ 4.0V
Phase
1.0M
500k 1.0M
V
T
A
CC
= 25℃
= 15V
10M
120
180
0
30
60
90
150
1.2
1.0
0.8
0.6
0.4
0.2
75
70
65
60
55
50
0
10k
0
LINEAR INTEGRATED CIRCUIT
Current Sense Input Threshold vs. Error Amp
Output Deadtime vs. Oscillator Frequency
20k
T
A
Error Amp Output Voltage, V
T
= 25℃
Oscillator Frequency, I
A
2.0
= 125℃
C
T
50k
= 10nF
Output Voltage
T
100k
A
4.0
= -55℃
5.0nF
200k
OSC
500pF
(Hz)
OUT
6.0
2.0nF
(V)
500k
V
QW-R103-010,C
CC
200pF
1.0nF
100pF
= 15V
1.0M
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8.0