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UC2524DW Datasheet(PDF) 5 Page - Texas Instruments

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Part No. UC2524DW
Description  ADVANCED REGULATING PULSE WIDTH MODULATORS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

UC2524DW Datasheet(HTML) 5 Page - Texas Instruments

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TYPICAL CHARACTERISTICS
40
30
10
−10
100
1 k
10 k
100 k
60
70
f − Frequency − Hz
90
1 M
10 M
0
20
50
80
RF =
VIN = 20 V
TJ = 25 C
RF = 1M
RF = 300 k
RF = 100 k
RF = 30 k
RF is Resistance From
Pin 9 to Ground
NOTE: Value of RF Below 30 kW
Will Began to Limit Maximum Duty-Cycle
10 k
1 k
100
1
2
5
10
20
100 k
1 M
50
100
RT − Timing Resistor − kW
VIN = 20 V
TJ = 25 C
CT = 0.001 mF
CT = 0.003 mF
CT = 0.01 mF
CT = 0.003 mF
CT = 0.1 mF
1
0.4
0.1
0.001
0.004 0.01
4
10
0.04
0.1
CT − Capacitance −
F
VIN = 20 V
TJ = 25 C
NOTE: Dead Time = Blanking Pulse Width
Plus Outplay Delay
2
1.5
0.5
0
0
20
40
60
2.5
3.5
Load Current − mA
4
80
100
1
3
VCC = 20 V
TJ = 125 C
TJ = 25 C
TJ = −55 C
UC1524
UC2524
UC3524
SLUS180E – NOVEMBER 1999 – REVISED OCTOBER 2005
OPEN-LOOP VOLTRAGE AMPLIFICATION
OSCILLATOR FREQUENCY
OF ERROR AMPLIFIER
vs
vs
TIMING COMPONENTS
FREQUENCY
Figure 1.
Figure 2.
OUTPUT DEAD TIME
OUTPUT SATURATION VOLTAGE
vs
vs
TIMING CAPACITANCE VALUE
LOAD CURRENT
Figure 3.
Figure 4.
5


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