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UC2853A Fiches technique(PDF) 3 Page - Texas Instruments

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No de pièce UC2853A
Description  8-Pin Continuous Conduction Mode (CCM) PFC Controller
Download  49 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

UC2853A Fiches technique(HTML) 3 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
UCC28019
SLUS755B – APRIL 2007 – REVISED DECEMBER 2007
Unless otherwise noted, VCC = 15 VDC, 0.1 µF from VCC to GND, -40°C ≤ TJ = TA ≤ 125°C. All voltages are with respect to
GND. Currents are positive into and negative out of the specified terminal.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VCC Bias Supply
IVCC(start)
Pre-start current
VCC = VCCON – 0.1 V
25
100
200
µA
IVCC(stby)
Standby current
VSENSE = 0.5 V
1.0
2.1
2.9
mA
IVCC(on_load)
Operating current
VSENSE = 4.5 V, CGATE = 4.7 nF
4
7
10
Under Voltage Lockout (UVLO)
VCCON
Turn on threshold
10.0
10.5
11.0
VCCOFF
Turn off threshold
9
9.5
10
V
UVLO
Hysteresis
0.8
1.0
1.2
Oscillator
TA = 25°C
61.7
65.0
68.3
fSW
Switching frequency,
kHz
–40
°C ≤ T
A ≤ 125°C
59
65
71
PWM
VCOMP = 0 V, VSENSE = 5 V,
DMIN
Minimum duty cycle
0%
ICOMP = 6.4 V
DMAX
Maximum duty cycle
VSENSE = 4.95 V
94%
97%
99.3%
tOFF(min)
Minimum off time
VSENSE = 3 V, ICOMP = 1 V
100
250
600
ns
System Protection
ISENSE threshold, soft over current
VSOC
-0.66
-0.73
-0.79
(SOC) ,
ISENSE threshold, peak current Limit
VPCL
-1.00
-1.08
-1.15
V
(PCL) ,
VSENSE threshold, open loop
ICOMP = 1 V, ISENSE = 0 V,
VOLP
0.77
0.82
0.86
protection (OLP),
VCOMP = 1 V
Open loop protection (OLP) internal
VSENSE = 0.5 V
100
250
nA
pull-down current
VSENSE threshold, output
VUVD
4.63
4.75
4.87
under-voltage detection (UVD),
VSENSE threshold, output
VOVP
ISENSE = -0.2 V
5.12
5.25
5.38
over-voltage protection (OVP),
V
Input brown-out detection (IBOP)
VINSBROWNOUT_th
0.76
0.82
0.88
high-to-low threshold
Input brown-out Detection (IBOP)
VINSENABLE_th
1.4
1.5
1.6
low-to-high threshold
IVINS_0 V
VINS bias current
VINS = 0 V
0
±0.1
µA
ICOMP threshold, external overload
0.6
V
protection
Copyright © 2007, Texas Instruments Incorporated
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