CS2842A/3843A SERIES
Electrical Characteristics:
-25°
≤
T
A
≤
85˚C for CS2842A/2843A, 0°
≤
T
A
≤
70˚C for CS3842A/3843A. V
CC
= 15V (Note 1);
R
T
= 680Ω, C
T
= .022µF for triangular mode, R
T
= 10kΩ, C
T
= 3.3nF for sawtooth mode (see Figure 3), unless otherwise stated.
PARAMETER
TEST CONDITIONS
CS2842A/CS2843A
MIN TYP MAX
CS3842A/CS3843A
MIN TYP MAX UNITS
s
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
Total Output Variation
Output Noise Voltage
Long Term Stability
Output Short Circuit
s
Oscillator Section
Initial Accuracy
Voltage Stability
Temp. Stability
Sawtooth Mode (see Fig. 3), T
J
= 25˚C 47
Triangular Mode (see Fig. 3), T
J
= 25˚C 47
12
≤
V
CC
≤
25V
Sawtooth Mode T
MIN
≤
T
A
≤
T
MAX
(Note 2)
Triangular Mode T
MIN
≤
T
A
≤
T
MAX
(Note 2)
OSC peak to peak
T
J
= 25˚C
T
MIN
≤
T
A
≤
T
MAX
7.5
7.2
52
52
0.2
5
8
1.7
8.3
9.3
9.5
7.5
7.2
57
57
1.0
47
44
52
52
0.2
5
8
1.7
8.3
9.3
9.5
57
60
1.0
kHz
kHz
%
%
%
V
mA
mA
T
J
= 25˚C, I
OUT
= 1mA
12
≤
V
IN
≤
25V
1
≤
I
OUT
≤
20mA
(Note 2)
Line, Load, Temp. (Note 2)
10Hz
≤
f
≤
10kHz, T
J
= 25˚C (Note 2)
T
A
= 125˚C, 1kHrs. (Note 2)
T
A
= 25˚C
-30
4.90
50
5
-100
25
-180
-30
4.95
5.00
6
6
0.2
5.05
20
25
0.4
5.10
4.82
50
5
-100
25
4.90
5.00
6
6
0.2
5.10 V
20
25
0.4
mV
mV
mV/˚C
µV
mV
-180 mA
5.18 V
Amplitude
Discharge Current
s
Error Amp Section
Input Voltage
Input Bias Current
A
VOL
Unity Gain Bandwidth
PSRR
Output Sink Current
Output Source Current
V
OUT
High
V
OUT
Low
s
Current Sense Section
Gain
Maximum Input Signal
PSRR
Input Bias Current
Delay to Output
s
Output Section
Output Low Level
Output High Level
I
SINK
= 20mA
I
SINK
= 200mA
I
SOURCE
= 20mA
I
SOURCE
= 200mA
2
13.0
12.0
0.1
1.5
13.5
13.5
0.4
2.2
13.0
12.0
0.1
1.5
13.5
13.5
0.4
2.2
V
V
V
V
(Notes 3 & 4)
V
COMP
= 5V (Note 3)
12
≤
V
CC
≤
25V (Note 3)
V
Sense
= 0
T
J
= 25˚C (Note 2)
2.85
0.9
3.00
1.0
70
-2
150
-10
300
3.15
1.1
2.85
0.9
3.00
1.0
70
-2
150
-10
300
3.15 V/V
1.1
V
dB
µA
ns
V
COMP
= 2.5V
V
FB
= 0
2
≤
V
OUT
≤
4V
(Note 2)
12
≤
V
CC
≤
25V
V
FB
= 2.7V, V
COMP
= 1.1V
V
FB
= 2.3V, V
COMP
= 5V
V
FB
= 2.3V, R
L
= 15kΩ to ground
V
FB
= 2.7V, R
L
= 15kΩ to V
REF
65
0.7
60
2
-0.5
5
2.45
2.50
-0.3
90
1.0
70
6
-0.8
6
0.7
1.1
2.55
-1.0
65
0.7
60
2
-0.5
5
2.42
2.50
-0.3
90
1.0
70
6
-0.8
6
0.7
1.1
2.58 V
-2.0
µA
dB
MHz
dB
mA
mA
V
V
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
