CS3842B/3843B
Electrical Characteristics:
0≤T
A
≤70˚C,
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 Fig. 3), unless otherwise stated
TEST CONDITIONS
MIN
PARAMETER
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
Triangular Mode (see Fig. 3), T
J
=25˚C
12≤V
CC
≤25V
Sawtooth Mode T
MIN
≤T
A
≤T
MAX
(Note 2)
Triangular Mode T
MIN
≤T
A
≤T
MAX
(Note 2)
Oscillator peak to peak
T
J
=25˚C
T
MIN
≤T
A
≤T
MAX
7.5
7.2
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, Temperature (Note 2)
10Hz≤f≤10kHz, T
J
=25˚C (Note 2)
T
A
=125˚C, 1kHrs. (Note 2)
T
A
=25˚C
-30
4.82
50
5
-100
25
-180
4.90
5.00
6
6
0.2
5.10
20
25
0.4
5.18
V
mV
mV
mV/˚C
V
µV
mV
mA
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
13.0
12.0
0.1
1.5
13.5
13.5
0.4
2.2
V
V
V
V
T
J
=25˚C (Note 2)
(Notes 3 & 4)
V
COMP
=5V (Note 3)
12≤V
CC
≤25V
(Note 3)
2.85
0.9
3.00
1.0
70
-2
150
-10
300
3.15
1.1
V/V
V
dB
µA
ns
2≤V
OUT
≤4V
(Note 2)
12≤V
CC
≤25V
V
FB
=2.7V, V
OSC
=1.1V
V
FB
=2.3V, V
OSC
=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
V
COMP
=2.5V
2.42
2.50
-0.3
90
1.0
70
6
-0.8
6
0.7
1.1
2.58
-2.0
V
µA
dB
MHz
dB
mA
mA
V
V
2
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
