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UC2854ADWG4 Fiches technique(PDF) 4 Page - Texas Instruments

No de pièce UC2854ADWG4
Description  ADVANCED HIGH-POWER FACTOR PREREGULATOR
Download  18 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

UC2854ADWG4 Fiches technique(HTML) 4 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
UC1854A
UC2854A, UC2854B
UC3854A, UC3854B
SLUS329E – MONTH 2003 – REVISED JANUARY 2008
VCC = 18 V, RT = 8.2 kΩ, CT = 1.5 nF, VPKLMT = 1 V, VVRMS = 1.5 V, IIAC = 100 µA, IISENSE = 0 V, VCAO = 3.5 V, VVAO = 5 V,
VVSENSE = 3 V, –40°C < TA < 85°C for the UC2854A and UC2854B, and 0°C < TA < 70°C for the UC3854A and UC3854B,
and TA = TJ (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
OVERALL
CAO = 0 V,
VAO = 0 V,
Supply current, off
250
400
µA
VCC = VUVLO–0.3 V
Supply current, on
12
18
mA
UCx854A
15.0
16.0
17.5
VCC turn-on threshold voltage
UCx854B
8.0
10.5
11.2
UCx854A
9
10
12
VCC turn-off threshold voltage
UCx854B
7.8
10.3
11.0
V
UCx854A
5
6
7
VCC hysteresis
UCx854B
0.10
0.22
0.50
VCC clamp
IVCC = IVCC(on) + 5 mA
18
20
22
VOLTAGE AMPLIFIER
Input voltage
2.9
3.0
3.1
V
VSENSE bias current
–500
—25
500
nA
Open loop gain
2 V
≤ VOUT ≤ 5 V
70
100
dB
VOH
High-level output voltage
ILOAD = –500 µA
6
V
VOL
Low-level output voltage
ILOAD = 500 µA
0.3
0.5
ISC
Output short-circuit current
VOUT = 0 V
1.5
3.5
mA
Gain bandwidth product(1)
fIN = 100 kHz,
10 mVp-p
1
MHz
CURRENT AMPLIFIER
VCM = 0 V,
TA = 25°C
–4
0
Input offset voltage
mV
VCM = 0 V,
Overtemperature
–5.5
0
ISENSE
Input bias current
VCM = 0 V
–500
500
nA
Open loop gain
2 V
≤ VOUT = 6 V
80
110
dB
VOH
High-level output voltage
ILOAD = –500 µA
8
V
VOL
Low-level output voltage
ILOAD = 500 µA
0.3
0.5
ISC
Output short-circuit current
VOUT = 0 V
1.5
3.5
mA
CMRR
Common mode rejection range
–0.3
5.0
V
Gain bandwidth product(1)
fIN = 100 kHz,
10 mVp-p
3
5
MHz
REFERENCE
IREF = 0 mA,
TA = 25°C
7.4
7.5
7.6
Output voltage
V
IREF = 0 mA
7.35
7.50
7.65
Load regulation
1 mA
≤ IREF ≤ 10 mA
0
8
20
mV
Line regulation
12 V
≤ VCC ≤ 18 V
0
14
25
ISC
Short circuit current
VREF = 0 V
25
35
60
mA
(1)
Ensured by design. Not production tested.
4
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Copyright © 2003–2008, Texas Instruments Incorporated
Product Folder Link(s): UC1854A UC2854A, UC2854B UC3854A, UC3854B


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