CS2841B Ver la hoja de datos (PDF) - Cherry semiconductor
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CS2841B Datasheet PDF : 6 Pages
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Electrical Characteristics: d -40≤TA≤85˚C RT=680kΩ, CT=0.022µF for triangular mode, VCC=15V (Note 1),
RT=10kΩ, CT=3.3nF for sawtooth mode (See Fig. 3), unless otherwise stated.
PARAMETER
TEST CONDITIONS
MIN
TYP
s Reference Section
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
TJ=25˚C, IOUT=1mA
8.4≤VCC≤16V
1≤IOUT≤20mA
(Note 2)
4.90
5.00
6
6
0.2
Total Output Variation
Line, Load, Temp. (Note 2)
4.82
Output Noise Voltage
10Hz≤f≤10kHz, TJ=25˚C (Note 2)
50
Long Term Stability
TA=125˚C, 1000 Hrs. (Note 2)
5
Output Short Circuit
TA=25˚C
-30
-100
MAX
UNIT
5.10
V
20
mV
25
mV
0.4
mV/˚C
5.18
V
µV
25
mV
-180
mA
s Oscillator Section
Initial Accuracy
Voltage Stability
Sawtooth Mode: (See Fig. 3)TJ=25˚C
47
52
Sawtooth Mode: -40˚C≤TA≤+85˚
44
52
Triangular Mode (See Fig. 3) TJ=25˚C 44
52
8.4V≤Vcc≤16V
0.2
Temperature Stability
Sawtooth Mode TMIN≤TA≤TMAX
5
Triangular Mode TMIN≤TA ≤TMAX
8
(Note 2)
Amplitude
Discharge current
VOSC (peak to peak)
TJ=25˚C
TMIN≤TA≤TMAX
1.7
7.4
8.3
7.2
57
kHz
60
kHz
60
kHz
1.0
%
%
%
V
9.2
mA
9.4
mA
s Error Amp Section
Input Voltage
Input Bias Current
AVOL
Unity Gain Bandwidth
PSRR
Output Sink Current
Output Source Current
VOUT High
VOUT Low
VCOMP=2.5V
VFB=0V
2≤VOUT≤4V
(Note 2)
8.4V≤VCC≤16V
VFB=2.7V, VCOMP=1.1V
VFB=2.3V, VCOMP=5V
VFB=2.3V, RL=15kΩ to ground
VFB=2.7V, RL=15kΩ to VREF
2.42
2.50
-0.3
65
90
0.7
1.0
60
70
2
6
-0.5
-0.8
5
6
0.7
2.58
V
-2.0
µA
dB
MHz
dB
mA
mA
V
1.1
V
s Current Sense Section
Gain
Maximum Input Signal
PSRR
Input Bias Current
Delay to Output
(Notes 3 & 4)
VCOMP=5V (Note 3)
12V≤VCC≤25V (Note 3)
VSense=0V
TJ=25˚C (Note 2)
Notes: 1. Adjust Vcc above the start threshold before setting at 15V.
2.These parameters, although guaranteed, are not 100% tested in production.
2.85
3.00
0.9
1.0
70
-2
150
3.15
V/V
1.1
V
dB
-10
µA
300
ns
3. Parameter measured at trip point of latch with VFB=0.
4. Gain defined as:
∆VCOMP
A = ∆VSense ; 0 ≤ VSense ≤ 0.8V.
2
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