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参数资料
| 型号： | CS2845LDWR16 |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, PDSO16 |
| 封装： | SO-16 |
| 文件页数： | 2/6页 |
| 文件大小： | 157K |
| 代理商： | CS2845LDWR16 |
2
Electrical Characteristics: -25 ≤ TA ≤ 85C for CS2844/2845, 0 ≤TA ≤ 70C for CS3844/3845. VCC = 15V (Note 1); RT = 10k,
CT = 3.3nF for sawtooth mode., unless otherwise stated.
CS2844/CS2845
CS3844/CS3845
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX UNITS
CS2844/3845
SERIES
s
Reference Section
Output Voltage
TJ=25C, IREF=1mA
4.95
5.00
5.05
4.90
5.00
5.10 V
Line Regulation
12≤VCC≤25V
6
20
6
20
mV
Load Regulation
1≤IREF≤20mA
6
25
6
25
mV
Temperature Stability
(Note 2)
0.2
0.4
0.2
0.4
mV/C
Total Output Variation
Line, Load, Temp. (Note 2)
4.90
5.10
4.82
5.18 V
Output Noise Voltage
10Hz≤ f≤10kHz, TJ=25C (Note 2)
50
V
Long Term Stability
TA=125C, 1000 Hrs. (Note 2)
5
25
5
25
mV
Output Short Circuit
TA=25C
-30
-100
-180
-30
-100
-180 mA
s
Oscillator Section
Initial Accuracy
Sawtooth Mode, TJ=25C
475257475257
kHz
Voltage Stability
12≤VCC≤25V
0.2
1.0
0.2
1.0
%
Temperature Stability
Sawtooth Mode TMIN≤TA≤TMAX
(Note 2)
5
%
Amplitude
VOSC (peak to peak)
1.7
V
s
Error Amp Section
Input Voltage
VCOMP=2.5V
2.45
2.50
2.55
2.42
2.50
2.58 V
Input Bias Current
VFB=0V
-0.3
-1.0
-0.3
-2.0 A
AVOL
2≤VOUT≤4V
65
90
65
90
dB
Unity Gain Bandwidth
(Note 2)
0.7
1.0
0.7
1.0
MHz
PSRR
12≤VCC≤25V
60
70
60
70
dB
Output Sink Current
VFB=2.7V, VCOMP=1.1V
2
6
2
6
mA
Output Source Current
VFB=2.3V, VCOMP=5V
-0.5
-0.8
-0.5
-0.8
mA
VOUT HIGH
VFB=2.3V, RL=15k to Gnd
5
6
5
6
V
VOUT LOW
VFB=2.7V, RL=15k to VREF
0.7
1.1
0.7
1.1
V
s
Current Sense Section
Gain
(Notes 3 & 4)
2.85
3.00
3.15
2.85
3.00
3.15 V/V
Maximum Input Signal
VCOMP=5V (Note 3)
0.9
1.0
1.1
0.9
1.0
1.1
V
PSRR
12≤VCC≤25V (Note 3)
70
dB
Input Bias Current
VSense=0V
-2
-10
-2
-10
A
Delay to Output
TJ=25C (Note 2)
150
300
150
300
ns
s
Output Section
Output Low Level
ISINK=20mA
0.1
0.4
0.1
0.4
V
ISINK=200mA
1.5
2.2
1.5
2.2
V
Output High Level
ISOURCE=20mA
13.0
13.5
13.0
13.5
V
ISOURCE=200mA
12.0
13.5
12.0
13.5
V
Rise Time
TJ=25C, CL=1nF (Note 2)
50
150
50
150
ns
Fall Time
TJ=25C, CL=1nF (Note 2)
50
150
50
150
ns
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