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參數(shù)資料
| 型號(hào)： | UC3843ADW |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁(yè)數(shù)： | 3/7頁(yè) |
| 文件大?。?/td> | 637K |
| 代理商： | UC3843ADW |
3
UC1842A/3A/4A/5A
UC2842A/3A/4A/5A
UC3842A/3A/4A/5A
PARAMETER
TEST CONDITIONS
UC184xA\UC284xA
UC384xA
UNITS
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
Reference Section
Output Voltage
TJ = 25°C, IO = 1mA
4.95
5.00
5.05
4.90
5.00
5.10
V
Line Regulation
12
≤ VIN 25V
6
20
6
20
mV
Load Regulation
1
≤ IO ≤ 20mA
6
25
6
25
mV
Temp. Stability
(Note 2, Note 7)
0.2
0.4
0.2
0.4
mV/°C
Total Output Variation
Line, Load, Temp.
4.9
5.1
4.82
5.18
V
Output Noise Voltage
10Hz
≤ f ≤ 10kHz
TJ = 25°C (Note 2)
50
V
Long Term Stability
TA = 125°C, 1000Hrs. (Note 2)
5
25
5
25
mV
Output Short Circuit
-30
-100
-180
-30
-100
-180
mA
Oscillator Section
Initial Accuracy
TJ = 25°C (Note 6)
47
52
57
47
52
57
kHz
Voltage Stability
12
≤ VCC ≤ 25V
0.2
1
0.2
1
%
Temp. Stability
TMIN
≤ TA ≤ TMAX (Note 2)
5
%
Amplitude
VPIN 4 peak to peak (Note 2)
1.7
V
Discharge Current
TJ = 25°C, VPIN 4 = 2V (Note 8)
7.8
8.3
8.8
7.8
8.3
8.8
mA
VPIN 4 = 2V (Note 8)
7.5
8.8
7.6
8.8
mA
Error Amp Section
Input Voltage
VPIN 1 = 2.5V
2.45
2.50
2.55
2.42
2.50
2.58
V
Input Bias Current
-0.3
-1
-0.3
-2
A
AVOL
2
≤ VO ≤ 4V
65
90
65
90
dB
Unity Gain Bandwidth
TJ = 25°C (Note 2)
0.7
1
0.7
1
MHz
PSRR
12
≤ VCC ≤ 25V
60
70
60
70
dB
Output Sink Current
VPIN 2 = 2.7V, VPIN 1 = 1.1V
2
6
2
6
mA
Output Source Current
VPIN 2 = 2.3V, VPIN 1 = 5V
-0.5
-0.8
-0.5
-0.8
mA
VOUT High
VPIN 2 = 2.3V, RL = 15k to ground
5
6
5
6
V
VOUT Low
VPIN 2 = 2.7V, RL = 15k to Pin 8
0.7
1.1
0.7
1.1
V
Current Sense Section
Gain
(Note 3, Note 4)
2.85
3
3.15
2.85
3
3.15
V/V
Maximum Input Signal
VPIN 1 = 5V (Note 3)
0.9
1
1.1
0.9
1
1.1
V
PSRR
12
≤ VCC ≤ 25V (Note 3)
70
dB
Input Bias Current
-2
-10
-2
-10
A
Delay to Output
VPIN 3 = 0 to 2V (Note 2)
150
300
150
300
ns
Output Section
Output Low Level
ISINK = 20mA
0.1
0.4
0.1
0.4
V
ISINK = 200mA
15
2.2
15
2.2
V
Output High Level
ISOURCE = 20mA
13
13.5
13
13.5
V
ISOURCE = 200mA
12
13.5
12
13.5
V
Rise Time
TJ = 25°C, CL = 1nF (Note 2)
50
150
50
150
ns
Fall Time
TJ = 25°C, CL = 1nF (Note 2)
50
150
50
150
ns
UVLO Saturation
VCC = 5V, ISINK = 10mA
0.7
1.2
0.7
1.2
V
ELECTRICAL CHARACTERISTICS Unless otherwise stated, these specifications apply for –55
°C ≤ TA ≤ 125°C for the
UC184xA; –40°C
≤ TA ≤ 125°C for the UC284xAQ; –40°C ≤ TA ≤ 85°C for the UC284xA; 0 ≤ TA ≤ 70°C for the UC384xA; VCC = 15V
(Note 5); RT = 10k; CT = 3.3nF; TA =TJ; Pin numbers refer to DIL-8.
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