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CS8161 Datasheet(PDF) 5 Page - Cherry Semiconductor Corporation

Part No. CS8161
Description  12V, 5V Low Dropout Dual Regulator with ENABLE
Download  8 Pages
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Manufacturer  CHERRY [Cherry Semiconductor Corporation]
Direct Link  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

CS8161 Datasheet(HTML) 5 Page - Cherry Semiconductor Corporation

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5
Definition of Terms
Dropout Voltage:
The input-output voltage differential at
which the circuit ceases to regulate against further
reduction in input voltage. Measured when the
output voltage has dropped 100mV from the nom-
inal value obtained at 14V input, dropout voltage
is dependent upon load current and junction tem-
perature.
Input Voltage:
The DC voltage applied to the input termi-
nals with respect to ground.
Input Output Differential:
The voltage difference
between the unregulated input voltage and the
regulated output voltage for which the regulator
will operate.
Line Regulation:
The change in output voltage for a
change in the input voltage. The measurement is
made under conditions of low dissipation or by
using pulse techniques such that the average chip
temperature is not significantly affected.
Load Regulation:
The change in output voltage for a
change in load current at constant chip tempera-
ture.
Long Term Stability:
Output voltage stability under accel-
erated life-test conditions after 1000 hours with
maximum rated voltage and junction temperature.
Output Noise Voltage:
The rms AC voltage at the output,
with constant load and no input ripple, measured
over a specified frequency range.
Quiescent Current:
The part of the positive input current
that does not contribute to the positive load cur-
rent. i.e., the regulator ground lead current.
Ripple Rejection:
The ratio of the peak-to-peak input rip-
ple voltage to the peak-to-peak output ripple volt-
age.
Temperature Stability of VOUT: The percentage change in
output voltage for a thermal variation from room
temperature to either temperature extreme.
-40
-20
0
20
40
60
80
100
120
140
1.285
1.290
1.295
1.300
1.305
Temperature (Deg. C)
VIN = 14.0V
Enable Threshold Voltage vs.
Temperature
Typical Performance Characteristics: continued
VENABLE
0.0
0.0
5.0
25
4.0
3.0
2.0
1.0
510
15
20
ENABLE Current vs. ENABLE Voltage
VENABLE (V)
0
0
100
5
Cursor ( 1.8500V, 253.9nA.)
Marker ( 1.8500V, 253.9nA.)
12
3
4
20
40
60
80
12mA ENABLE Current vs.
ENABLE Voltage
025
50
75
100
125
150
175
200
225
250
0
50
100
150
200
250
350
450
500
600
800
Output Current (mA)
VIN = 4.0V
No Load on VOUT1
750
700
650
300
550
125
°C
-40
°C
25
°C
Dropout Voltage vs. Output Current for VOUT
2
0
200
25
50
250
75
100
125
150
175
225
5
10
15
20
25
30
35
40
45
50
55
60
Output Current (mA)
VIN = 4.0V
0
125
°C
25
°C
-40
°C
Quiescent Current vs. Output Current @ Dropout for VOUT
2


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