參數(shù)資料
型號： UCC2819DW
廠商： Texas Instruments, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： PROGRAMMABLE OUTPUT POWER FACTOR PREREGULATOR
中文描述： 可編程輸出功率因數(shù)前置穩(wěn)壓器
文件頁數(shù)： 4/10頁
文件大?。?/td> 156K
代理商： UCC2819DW
SLUS482B - APRIL 2001 REVISED DECEMBER 2004
4
www.ti.com
electrical characteristics
, T
A
= 0
°
C to 70
°
C for the UCC3819, 40
°
C to 85
°
C for the UCC2819, VCC = 12 V,
R
T
= 22 k
, C
T
= 270 pF, (unless otherwise noted)
peak current limit
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
PKLMT reference voltage
15
15
mV
PKLMT propagation delay
150
350
500
ns
multiplier
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
IMOUT, high line, low power output
current, (0
°
C to 85
°
C)
IMOUT, high line, low power output
current, (40
°
C to 85
°
C)
IMOUT, high line, high power output
current
IAC = 500
μ
A,
VFF = 4.7 V,
VAOUT = 1.25 V
0
6
20
μ
A
IAC = 500
μ
A,
VFF = 4.7 V,
VAOUT = 1.25 V
0
23
μ
A
IAC = 500
μ
A,
VFF = 4.7 V,
VAOUT = 5 V
70
90
105
μ
A
IMOUT, low line, low power output
current
IAC = 150
μ
A,
VFF = 1.4 V,
VAOUT = 1.25 V
10
19
50
μ
A
IMOUT, low line, high power output
current
IAC = 150
μ
A,
VFF = 1.4 V,
VAOUT = 5 V
268
300
346
μ
A
IMOUT, IAC limited
Gain constant (K)
IAC = 150
μ
A,
IAC = 300
μ
A,
IAC = 150
μ
A,
IAC = 500
μ
A,
IAC = 500
μ
A,
IAC = 500
μ
A,
IAC = 150
μ
A,
VFF = 1.3 V,
VFF = 3 V,
VFF = 1.4 V,
VFF = 4.7 V,
VFF = 4.7 V,
VFF = 4.7 V,
VFF = 1.4 V,
VAOUT = 5 V
250
300
400
μ
A
1/V
μ
A
μ
A
μ
A
μ
A
μ
W
VAOUT = 2.5 V
0.5
1
1.5
IMOUT, zero current
VAOUT = 0.25 V
0
2
VAOUT = 0.25 V
0
2
IMOUT, zero current, (0
°
C to 85
°
C)
IMOUT, zero current, (40
°
C to 85
°
C)
Power limit (IMOUT x VFF)
VAOUT = 0.5 V
0
3
VAOUT = 0.5 V
0
3.5
VAOUT = 5 V
375
420
485
feed-forward
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
μ
A
VFF output current
IAC = 300
μ
A
140
150
160
gate driver
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ns
Pullup resistance
IO = –100 mA to 200 mA
IO = 100 mA
CL = 1 nF,
CL = 1 nF,
5
12
Pulldown resistance
2
10
Output rise time
RL = 10
,
RL = 10
,
VDRVOUT = 0.7 V to 9 V
VDRVOUT = 9 V to 0.7 V
25
50
Output fall time
10
50
ns
Maximum duty cycle
93
95
100
%
Minimum controlled duty cycle
At 100 kHz
2
%
zero power
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Zero power comparator threshold
Measured on VAOUT
0.20
0.33
0.50
V
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