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UC2845D Fiches technique(PDF) 9 Page - Texas Instruments

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No de pièce UC2845D
Description  Current-Mode PWM Controllers
Download  56 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

UC2845D Fiches technique(HTML) 9 Page - Texas Instruments

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Temperature (C)
-75
-50
-25
0
25
50
75
100
125
150
40
60
80
100
120
140
160
180
D006
Source Current (mA)
0
20
40
60
80
100
120
140
160
-60
-50
-40
-30
-20
-10
0
D007
Ta = 125 C
Ta = 25 C
Ta = -40 C
Freq (Hz)
10
100
1000
10000
100000 1000000
1E+7
-20
-100
0
-50
20
0
40
50
60
100
80
150
100
200
D003
Gain
Phase
IO, Output Load Current (mA)
0
100
200
300
400
500
600
700
800
-10
0
-9
1
-8
2
-7
3
-6
4
-5
5
-4
6
-3
7
-2
8
-1
9
0
10
D005
Source Saturation at 25 C
Source Saturation at -55 C
Sink Saturation at -55 C
Sink Saturation at 25 C
Temperature (C)
-75
-50
-25
0
25
50
75
100
125
150
7.4
7.6
7.8
8
8.2
8.4
8.6
8.8
9
9.2
D001
VO, Error Amp Output Voltage (V)
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
D005
TA = 125qC
TA = 25qC
TA = 55qC
9
UC1842, UC2842, UC3842, UC1843, UC2843, UC3843
UC1844, UC2844, UC3844, UC1845, UC2845, UC3845
www.ti.com
SLUS223D – APRIL 1997 – REVISED AUGUST 2016
Product Folder Links: UC1842 UC2842 UC3842 UC1843 UC2843 UC3843 UC1844 UC2844 UC3844 UC1845
UC2845 UC3845
Submit Documentation Feedback
Copyright © 1997–2016, Texas Instruments Incorporated
7.6 Typical Characteristics
Figure 1. Oscillator Discharge Current
vs Temperature for VCC = 15 V and VOSC = 2 V
Figure 2. Current Sense Input Threshold vs
Error Amplifier Output Voltage for VCC = 15 V
Figure 3. Error Amplifier Open-Loop Gain and Phase vs
Frequency, VCC = 15 V, RL = 100 kΩ, and TA = 25 °C
Figure 4. OUTPUT Saturation Voltage vs
Load Current for VCC = 15 V with 5-ms Input Pulses
Figure 5. VREF Short-Circuit Current vs
Temperature for VCC = 15 V
Figure 6. VREF Voltage vs Source Current


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