參數(shù)資料
型號(hào)： UCC2819PW
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(yè)數(shù)： 3/10頁(yè)
文件大?。?/td> 156K
代理商： UCC2819PW
SLUS482B - APRIL 2001 REVISED DECEMBER 2004
3
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)
over voltage protection and enable
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Over voltage reference
VREF
+0.48
VREF
+0.50
VREF
+0.52
V
Hysteresis
300
500
600
mV
Enable threshold
1.7
1.9
2.1
V
Enable hysteresis
0.1
0.2
0.3
V
current amplifier
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Input offset voltage
VCM = 0 V,
VCM = 0 V,
VCM = 0 V,
VCM = 0 V,
VCM = 0 V to 1.5 V,
IL = 120
μ
A
IL = 1 mA
See Note 1
VCAOUT = 3 V
VCAOUT = 3 V
VCAOUT = 3 V
VCAOUT = 2 V to 5 V
VCAOUT = 3 V
3.5
0
2.5
mV
Input bias current
50
100
nA
Input offset current
25
100
nA
Open loop gain
90
dB
Common-mode rejection ratio
60
80
dB
High-level output voltage
5.6
6.5
6.8
V
Low-level output voltage
0.1
0.2
0.5
V
Gain bandwidth product
2.5
MHz
voltage reference
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Input voltage, (UCC3819)
TA = 0
°
C to 70
°
C
TA = 40
°
C to 85
°
C
IREF = 1 mA to 2 mA
VCC = 10.8 V to 15 V,
7.387
7.5
7.613
V
Input voltage, (UCC2819)
7.369
7.5
7.631
V
Load regulation
0
10
mV
Line regulation
See Note 2
0
10
mV
Short-circuit current
VREF = 0 V
20
25
50
mA
oscillator
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Initial accuracy
TA = 25
°
C
VCC = 10.8 V to 15 V
85
100
115
kHz
Voltage stability
1
1
%
Total variation
Line, temp,
See Note 1
80
120
kHz
Ramp peak voltage
4.5
5
5.5
V
Ramp amplitude voltage
(peak to peak)
NOTES: 1. Ensured by design, Not production tested.
2. Reference variation for VCC < 10.8 V is shown in Figure 2.
3.5
4
4.5
V
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