CS2841B
Electrical Characteristics: d -40≤T
A
≤85˚C
R
T
=680kΩ, C
T
=0.022µF for triangular mode, V
CC
=15V (Note 1),
R
T
=10kΩ, C
T
=3.3nF for sawtooth mode (See Fig. 3), unless otherwise stated.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
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
Sawtooth Mode: (See Fig. 3)T
J
=25˚C
Sawtooth Mode: -40˚C≤T
A
≤+85˚
Triangular Mode (See Fig. 3) T
J
=25˚C
8.4V≤Vcc≤16V
Sawtooth Mode T
MIN
≤T
A
≤T
MAX
Triangular Mode T
MIN
≤T
A
≤T
MAX
(Note 2)
V
OSC
(peak to peak)
T
J
=25˚C
T
MIN
≤T
A
≤T
MAX
7.4
7.2
47
44
44
52
52
52
0.2
5
8
1.7
8.3
9.2
9.4
57
60
60
1.0
kHz
kHz
kHz
%
%
%
V
mA
mA
T
J
=25˚C, I
OUT
=1mA
8.4≤V
CC
≤16V
1≤I
OUT
≤20mA
(Note 2)
Line, Load, Temp. (Note 2)
10Hz≤f≤10kHz, T
J
=25˚C (Note 2)
T
A
=125˚C, 1000 Hrs. (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
Voltage Stability
Temperature Stability
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
Notes:
V
COMP
=2.5V
V
FB
=0V
2≤V
OUT
≤4V
(Note 2)
8.4V≤V
CC
≤16V
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
2.42
65
0.7
60
2
-0.5
5
2.50
-0.3
90
1.0
70
6
-0.8
6
0.7
2.58
-2.0
V
µA
dB
MHz
dB
mA
mA
V
1.1
V
(Notes 3 & 4)
V
COMP
=5V (Note 3)
12V≤V
CC
≤25V
(Note 3)
V
Sense
=0V
T
J
=25˚C (Note 2)
2.85
0.9
3.00
1.0
70
-2
150
3.15
1.1
-10
300
V/V
V
dB
µA
ns
1. Adjust V
cc
above the start threshold before setting at 15V.
2.These parameters, although guaranteed, are not 100% tested in production.
3. Parameter measured at trip point of latch with V
FB
=0.
4. Gain defined as:
A=
∆V
COMP
∆V
Sense
; 0
≤
V
Sense
≤
0.8V.
2
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
