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參數(shù)資料
| 型號(hào)： | UC1903N |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Quad Supply and Line Monitor |
| 中文描述： | 四供應(yīng)及在線監(jiān)測(cè) |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大?。?/td> | 477K |
| 代理商： | UC1903N |
ELECTRICAL CHARACTERISTICS:
PARAMETERS
TEST CONDITIONS
UC1903/UC2903
MIN
TYP
UC3903
TYP
UNITS
MAX
MIN
MAX
Fault Thresholds (cont.)
OV & UV Threshold Hyst.
OV & UV Threshold Supply
Sensitivity
Adjust Pin (Pin 4)
Input Bias Current
Line Sense Threshold
Line Sense Threshold Hyst.
Sense Inputs
Sense 1-4
Input Bias Current
0.5V
≤
V
PIN 4
≤
2.5V
+V
IN
= 8V to 40V
10
20
.002
30
.01
10
20
.002
30
.02
mV/V
%/V
0.5V
≤
V
PIN 4
≤
2.5V
±
1
±
10
±
1
±
12
μ
A/V
Input = High to Low
1.94
125
2.0
175
2.06
225
1.9
100
2.0
175
2.1
250
V
mV
Input = 2.8V (Note 2)
Input = 2.2 (Note 2)
Input = 2.3V (Note 2)
1
-1
1
3
-3
3
1
-1
1
6
-6
6
μ
A
μ
A
μ
A
Line Sense Input
Bias Current
OV and UV Fault Delay
Charging Current
Threshold Voltage
Threshold Hysteresis
Delay
60
1.8
250
30
60
1.8
250
30
μ
A
V
mV
ms/
μ
F
Delay Pin = Low to High
T
J
= 25°C
Ratio of Threshold Voltage to Charging
Current
20
50
20
50
Fault Outputs (OV, UV, & Power 0K)
Maximum Current
Saturation Voltage
Leakage Current
Sense 4 Inverter
(Note 3)
Input Offset Voltage
Input Bias Current
Open Loop Gain
PSRR
Unity Gain Frequency
Slew Rate
Short Circuit Current
G.P. Op-Amp
(Note 3)
Input Offset Voltage
Input Bias Voltage
Input Offset Current
Open Loop Gain
CMRR
PSRR
Unity Gain Frequency
Slew Rate
Short Circuit Current
Note 2: These currents represent maximum input bias currents required as the sense inputs cross appropriate thresholds.
Note 3: When either the G.P OP-Amp, or the Sense 4 Inverter, are configured for sensing a negative supply voltage, the divider
resistance at the inverting input should be chosen such that the nominal divider current is
≤
1.4mA. With the divider current
at or below this level possible latching of the circuit is avoided. Proper operation for currents at or below 1.4mA is 100%
tested in production.
Note 4: Reference to pin numbers in this specification pertain to 18 pin DIL N and J packages and 18 pin SOIC DW package.
V
OUT
= 2V
I
OUT
= 12mA
V
OUT
= 40 V
30
70
.25
3
30
70
.25
3
mA
V
μ
A
.40
25
.40
25
2
.1
80
100
1
.4
40
8
2
2
.1
80
100
1
.4
40
10
4
mV
μ
A
dB
dB
MHz
V/
μ
s
mA
65
65
65
65
+V
IN
= 8 to 40 V
T
J
= 25°C
1
.1
.01
120
100
100
1
.4
40
5
2
.5
1
.1
.01
120
100
100
1
.4
40
8
4
mV
μ
A
μ
A
dB
dB
dB
MHz
V/
μ
s
mA
1.0
65
65
65
65
65
65
V
CM
= 0 to +V
IN
= 2.0V
+V
IN
= 8 to 40V
T
J
= 25°C
UC1903
UC2903
UC3903
Unless otherwise stated, these specifications apply for T
A
= –55°C to +125°C for the
UC1903; –40°C to +85°C for the UC2903; and 0°C to +70°C for the UC3903; +V
IN
=
15V; Sense Inputs (Pins 6–9 and Pin 15) = 2.5V; V
PIN 4
= 1.0V, T
A
= T
J.
3
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