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UC1879 датащи(PDF) 3 Page - Texas Instruments

номер детали UC1879
подробное описание детали  Phase Shift Resonant Controller
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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UC1879 датащи(HTML) 3 Page - Texas Instruments

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UC1879
UC2879
UC3879
ELECTRICAL CHARACTERISTICS Unless specified; VC = VIN = VUVSEL =12V, CT = 470pF, RT = 9.53k, RDELSETA-B =
RDELSEC-D = 4.8k, CDELSETA-B =CDELSETC-D = 0.01µF, TA =TJ.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Undervoltage Lockout
Start Threshold
VUVSEL = VIN
9
10.75
12.5
V
VUVSEL = Open
12.5
15.25
16.5
V
UVLO Hysteresis
VUVSEL = VIN
1.15
1.75
2.15
V
VUVSEL = Open
5.2
6
7.4
V
Input Bias, UVSEL Pin
VUVSEL =VIN=8V
30
µA
Supply Current
IVIN Startup
VIN = VUVSEL = 8V, VC = 18V, IDELSETA-B =
IDELSETC-D =0
150
600
µA
IVC Startup
VIN = VUVSEL = 8V, VC = 18V, IDELSETA-B =
IDELSETC-D =0
10
100
µA
IVIN Operating
UC3879, UC2879
23
33
mA
UC1879
23
36
mA
IVC Operating
48
mA
Voltage Reference
Output Voltage
TJ = +25°C
4.92
5
5.08
V
Line Regulation
11V < VIN < 18V
1
10
mV
Load Regulation
IVREF = –10mA
5
20
mV
Total Variation
Line, Load, Temperature
4.875
5.125
V
Short Circuit Current
VREF = 0V, TJ =25°C
–60
–15
mA
Error Amplifier
Error Amplifier Input Voltage
2.4
2.5
2.6
V
Input Bias Current
0.6
3
µA
AVOL
1V < VCOMP <4V
60
90
dB
PSRR
11V < VIN < 18V
85
100
dB
Output Sink Current
VCOMP = 1V
1
2.5
mA
Output Source Current
VCOMP =4V
−1.3
−0.5
mA
Output Voltage High
ICOMP = –0.5mA
4
4.7
5
V
Output Voltage Low
ICOMP = 1mA
0
0.5
1
V
Slew Rate
TA = +25°C
6
11
V/
µs
PWM Comparator
RAMP Offset Voltage
TJ =25°C, Note 3
1.1
1.25
1.4
V
PWM Phase Shift,
VCOMP >VRAMPpeak +VRAMPoffset
98
99.7
102
%
TDELSETA-B, TDELSETC-D = 0, Note 1
VCOMP < Zero Phase Shift Voltage
0
0.3
2
%
Output Skew,
VCOMP >VRAMPpeak +VRAMPoffset
10
ns
TDELSETA-B, TDELSETC-D = 0, Note 1
VCOMP < Zero Phase Shift Voltage
10
ns
Ramp to Output Delay, TDELSETA-B =0,
TDELSETC-D =0
UC3879, UC2879
115
250
ns
UC1879
115
300
ns
Oscillator
Initial Accuracy
TA =25°C
180
200
220
kHz
Voltage Stability
11V < VIN < 18V
1
2
%
Total Variation
Line, Temperature
160
200
240
kHz
CLKSYNC Threshold
2.3
2.5
2.7
V
Clock Out High
2.8
4
V
Clock Out Low
0.5
1
1.5
V
Clock Out Pulse Width
400
600
ns
Ramp Valley Voltage
0.2
0.4
V


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