參數(shù)資料
型號(hào)： UC1904
廠商： Texas Instruments, Inc.
英文描述： Precision Quad Supply and Line Monitor
中文描述： 精密四供應(yīng)及在線監(jiān)測(cè)
文件頁(yè)數(shù)： 3/6頁(yè)
文件大小： 308K
代理商： UC1904
UC1904
UC2904
UC3904
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
OV UV Window, LS Input, OC Input, ARST Input, and ON/OFF Input Thresholds (cont.)
Under-Voltage Thresholds
W
ADJ
= 0.25V, Offset from V
REF,
Input H to L
S1, S2
W
ADJ
= 0.5V, Offset from V
REF,
Input H to L
W
ADJ
= 1V, Offset from V
REF,
Input H to L
Under-Voltage Thresholds
W
ADJ
= 0.25V, Offset from V
REF,
Input H to L
S3, S4 Positive Mode
W
ADJ
= 0.5V, Offset from V
REF,
Input H to L
W
ADJ
= 1V, Offset from V
REF,
Input H to L
OV and UV Threshold Hysteresis As a Function of W
ADJ
S3 Negative Mode Thresholds
Over-Voltage, W
ADJ
= 0.5V, Input H to L
Under-Voltage, W
ADJ
= 0.5V, Input L to H
Hysteresis, W
ADJ
= 0.5V
S4 Negative Mode Thresholds
Over-Voltage, W
ADJ
= 0.5V, Input H to L
Under-Voltage, W
ADJ
= 0.5V, Input L to H
Hysteresis, W
ADJ
= 0.5V
W
ADJ
Input Bias Current
0.25V < W
ADJ
<1.0V
LS Threshold
Input = H to L
Threshold hysteresis
OC Threshold
Input = H to L
Threshold hysteresis
ARST Input Threshold
Input = L to H
Input = H to L
ON/OFF Input Threshold
Input high level
Input low level
Sense and Logic Input Bias Currents
Sense 1-4, Positive Mode
Input = 2.8V
Input = 2.2V
Sense 3 Negative Mode
Input = -12V
Sense 4 Negative Mode
Input = -5V
Line, and OC Inputs
Input = 2.2V
ON/OFF Input
Input = 2.5V
ARST Input
Input = 0.5
Open Collector Outputs (OV/OC Out, PG Out, PWRW Out, ON/OFF Out)
Saturation Voltage
I
OUT
= 10mA
Leakage current
V
OUT
= 20V
POR Delay
Delay
Internal Pullup Current
Threshold Low to High
OFF Delay
Delay
Internal Pullup current
Threshold Low to High
OV Fault Delay
Delay
-140
-270
-540
-150
-285
-555
30
-13.52
-11.06
80
-5.63
-4.61
30
-5
1.96
65
1.9
50
2.25
0.56
-125
-250
-500
-125
-250
-500
50
-13.2
-10.8
120
-5.5
-4.5
50
-110
-230
-460
-110
-230
-460
70
-12.88
-10.54
160
-5.37
-4.39
70
5
2.04
125
2.1
150
2.75
0.69
2.4
mV
mV
mV
mV
mV
mV
mV/V
V
V
mV
V
V
mV
μ
A/V
V
mV
V
mV
V
V
V
V
2
100
2
100
2.5
0.625
1.74
1.35
0.6
250
-250
-500
-500
300
150
-700
800
nA
nA
μ
A
μ
A
nA
nA
nA
-1000
-700
-700
-300
-300
1000
600
-2000
0.2
0.4
5
V
μ
A
160
250
9
2.25
350
ms/
μ
F
μ
A
V
120
185
12
2.25
250
ms/
μ
F
μ
A
V
10
20
50
μ
s
Unless otherwise stated, these specifications hold for T
A
= 0 to 70
°
C for the UC3904, -40 to
+85
°
C for the UC2904, and -55 to +125
°
C for the UC1904, +V
IN
= 15V, W
ADJ
= 0.5V, Sense
Inputs 1-4, OC and LS Inputs = 2.5V. The ON/OFF Input and the ARST Input = 0V.
ELECTRICAL
CHARACTERISTICS (cont):
3
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