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UC2879J Fiches technique(PDF) 4 Page - Texas Instruments

No de pièce UC2879J
Description  PHASE SHIFT RESONANT CONTROLLER
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

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ELECTRICAL CHARACTERISTICS
UC1879
UC2879
UC3879
SLUS230B – JUNE 1998 – REVISED JUNE 2007
Unless specified; VC = VIN = V
UVSEL = 12 V, CT = 470 pF, RT = 9.53k, RDELSETA-B = RDELSEC-D = 4.8k, CDELSETA-B = CDELSETC-D
= 0.01
µF, T
A = TJ.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Undervoltage Lockout
VUVSEL = VIN
9
10.75
12.5
Start threshold
VUVSEL = Open
12.5
15.25
16.5
V
VUVSEL = VIN
1.15
1.75
2.15
UVLO hysteresis
VUVSEL = Open
5.2
6
7.4
Input bias, UVSEL pin
VUVSEL= VIN = 8 V
30
µA
Supply Current
VIN = VUVSEL = 8 V, VC = 18 V,
IVIN startup
150
600
IDELSETA-B = IDELSETC-D = 0
µA
VIN = VUVSEL = 8 V, VC = 18 V,
IVC startup
10
100
IDELSETA-B = IDELSETC-D = 0
UC3879, UC2879
23
35
IVIN operating
UC1879
23
36
mA
IVC operating
4
8
Voltage Reference
Output voltage
TJ = 25°C
4.92
5
5.08
V
Line regulation
11 V < VIN < 18 V
1
10
mV
Load regulation
IVREF = –10 mA
5
20
Total variation
Line, Load, Temperature
4.875
5.125
V
Short circuit current
VREF = 0 V, 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
1 V < VCOMP < 4 V
60
90
dB
PSRR
11 V < VIN < 18 V
85
100
Output sink current
VCOMP = 1 V
1
2.5
mA
Output source current
VCOMP = 4 V
–1.3
–0.5
Output voltage high
ICOMP = –0.5 mA
4
4.7
5
V
Output voltage low
ICOMP = 1 mA
0
0.5
1
Slew rate
TA = 25°C
6
11
V/
µs
4
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