CS8161 Cherry Semiconductor Corporation, CS8161 Datasheet - Page 5

• Manufacturer Part Number: CS8161
• Description: 12V/ 5V Low Dropout Dual Regulator with ENABLE
• Manufacturer: Cherry Semiconductor Corporation

Dropout Voltage: The input-output voltage differential at
Input Voltage: The DC voltage applied to the input termi-
Input Output Differential: The voltage difference
Line Regulation: The change in output voltage for a
1.305
1.300
1.295
1.290
1.285
800
750
700
650
600
550
500
450
350
300
200
150
100
250
50
Enable Threshold Voltage vs.
-40
0
0
Dropout Voltage vs. Output Current for V
V
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.
nals with respect to ground.
between the unregulated input voltage and the
regulated output voltage for which the regulator
will operate.
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.
-20
IN
V
No Load on V
= 14.0V
IN
25
0
= 4.0V
Temperature
Temperature (Deg. C)
20
50
40
OUT 1
75
60
Output Current (mA)
80
100
100 120 140
125
150
Typical Performance Characteristics: continued
175
ENABLE Current vs. ENABLE Voltage
100
200
80
60
40
20
0
OUT 2
0
Cursor ( 1.8500V, 253.9nA.)
Marker ( 1.8500V, 253.9nA.)
125°C
225
Definition of Terms
-40°C
25°C
1
250
V
2
ENABLE
5
Load Regulation: The change in output voltage for a
Long Term Stability: Output voltage stability under accel-
Output Noise Voltage: The rms AC voltage at the output,
Quiescent Current: The part of the positive input current
Ripple Rejection: The ratio of the peak-to-peak input rip-
Temperature Stability of V
Quiescent Current vs. Output Current @ Dropout for V
(V)
3
60
55
50
45
40
30
15
35
25
20
10
5
0
0
change in load current at constant chip tempera-
ture.
erated life-test conditions after 1000 hours with
maximum rated voltage and junction temperature.
with constant load and no input ripple, measured
over a specified frequency range.
that does not contribute to the positive load cur-
rent. i.e., the regulator ground lead current.
ple voltage to the peak-to-peak output ripple volt-
age.
output voltage for a thermal variation from room
temperature to either temperature extreme.
4
V
IN
25
= 4.0V
5
50
75
5.0
4.0
3.0
2.0
1.0
0.0
0.0
Output Current (mA)
100
12mA ENABLE Current vs.
OUT
: The percentage change in
125
5
ENABLE Voltage
150
10
V
ENABLE
175
15
200
-40°C
225
20
125°C
OUT 2
25°C
250
25