CS52843 Просмотр технического описания (PDF) - ON Semiconductor
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CS52843 Datasheet PDF : 9 Pages
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CS52843
ELECTRICAL CHARACTERISTICS (−40°C ≤ TA ≤ 85°C; VCC = 15 V (Note 2.); RT = 680 Ω; CT = 0.022 μF for triangle
mode, RT = 10 kΩ; CT = 3.3 nF sawtooth mode; unless otherwise specified.)
Parameter
Test Conditions
Min
Typ
Max
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
TJ = 25°C, IREF = 1.0 mA
12 ≤ VCC ≤ 25 V
1.0 ≤ IREF ≤ 20 mA
Note 2.
4.9
5.0
5.1
−
6.0
20
−
6.0
25
−
0.2
0.4
Total Output Variation
Line, Load, Temp. Note 2.
4.82
−
5.18
Output Noise Voltage
Long Term Stability
Output Short Circuit
Oscillator Section
10 Hz ≤ f ≤ 10 kHz, TJ = 25°C, Note 2.
TA = 125°C, 1000 Hrs. Note 2.
TA = 25°C
−
50
−
−
5.0
25
−30
−100 −180
Initial Accuracy
Voltage Stability
Temperature Stability
Sawtooth Mode, TJ = 25°C, Note 2.
Triangle Mode, TJ = 25°C
12 ≤ VCC ≤ 25 V
Sawtooth Mode TMIN ≤ TA ≤ TMAX
Triangle Mode TMIN ≤ TA ≤ TMAX, Note 2.
47
52
57
44
52
60
−
0.2
1.0
−
5.0
−
−
8.0
−
Amplitude
Discharge Current
VOSC (peak to peak)
TJ = 25°C
TMIN ≤ TA ≤ TMAX
−
1.7
−
7.3
8.3
9.3
6.8
−
9.8
Error Amp Section
Input Voltage
Input Bias Current
AVOL
Unity Gain Bandwidth
VCOMP = 2.5 V
VFB = 0 V
2.0 ≤ VOUT ≤ 4.0 V
Note 2.
2.42
2.50
2.58
−
−0.3
−2.0
65
90
−
0.7
1.0
−
PSRR
Output Sink Current
Output Source Current
VOUT HIGH
VOUT LOW
Current Sense Section
12 ≤ VCC ≤ 25 V
VFB = 2.7 V, VCOMP = 1.1 V
VFB = 2.3 V, VCOMP = 5.0 V
VFB = 2.3 V, RL = 15 kΩ to GND
VFB = 2.7 V, RL = 15 kΩ to VREF
60
70
−
2.0
6.0
−
−0.5
−0.8
−
5.0
6.0
−
−
0.7
1.1
Gain
Notes 3 & 4.
2.85
3.0
3.15
Maximum Input Signal
VCOMP = 5.0 V, Note 3.
PSRR
12 ≤ VCC ≤ 25 V, Note 3.
Input Bias Current
VSENSE = 0 V
Delay to Output
TJ = 25°C, Note 2.
2. These parameters, although guaranteed, are not 100% tested in production.
0.9
1.0
1.1
−
70
−
−
−2.0
−10
−
150
300
3. Parameter measured at a trip point of latch with VFB = 0.
4.
Gain defined as:
A
+
DVCOMP
DVSENSE
;
0
v VSENSE
v 0.8
V
Unit
V
mV
mV
mV/°C
V
μV
mV
mA
kHz
kHz
%
%
%
V
mA
mA
V
μA
dB
MHz
dB
mA
mA
V
V
V/V
V
dB
μA
ns
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