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参数资料
| 型号： | UC1886J |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, CDIP16 |
| 文件页数： | 3/7页 |
| 文件大小： | 278K |
| 代理商： | UC1886J |
3
UC1886
UC2886
UC3886
ELECTRICAL CHARACTERISTICS Unless otherwise specified, VCC = 12V, VCOMMAND = 3.0V, CT = 1nF, RT = 10k,
TA =TJ =0°C<TA < 70°C for the UC3886. (Note: –25°C < TA < 85°C for the UC2886, and –55°C < TA < 125°C for the UC1886)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Input Buffer
Gain
IBUF = ± 500A (UC3886)
0.98
1
1.02
V/V
IBUF = ± 500A (UC2886, UC1886)
0.95
1.05
V/V
Current-Sense Amplifier
Input Offset Voltage
VCM = 3.0V (UC3886)
2
mV
VCM = 3.0V (UC2886, UC1886)
6
mV
Input Bias Current
VCM = 3.0V
-1
A
Input Offset Current
VCM = 3.0V
0.2
A
Open Loop Gain
2V < VISO <6V
60
85
dB
CMRR
0V < VCM < 4.5V
60
85
dB
PSRR
11V < VCC < 15V
60
85
dB
Output High Voltage
IISO = –100A5
V
Output Low Voltage
IISO = 1mA
1
V
Output Source Current
VISO =2V
0.2
mA
Gain-Bandwidth Product
F = 100kHz
2
3.5
MHz
Current Amplifier
Input Offset Voltage
VCM = 3.0V (UC3886)
13
mV
VCM = 3.0V (UC2886, UC1886)
18
mV
Input Bias Current
VCM = 3.0V
1
A
Open Loop Gain
1V < VCAO <3V
60
85
dB
CMRR
1.5V < VCM < 4.5V
60
85
dB
PSRR
11V < VCC < 15V
60
85
dB
Output High Voltage
ICAO = –100A
3
3.3
V
Output Low Voltage
ICAO = 100A1
V
Output Source Current
VCAO =1V
0.1
–0.25
mA
Gain-Bandwidth Product
F = 100kHz
2
3.5
MHz
Oscillator
Frequency
RT = 10k, CT = 1nF (UC3886)
90
100
110
kHz
RT = 10k, CT = 1nF (UC2886, UC1886)
85
115
kHz
Frequency Change With Voltage
11V > VCC > 15V
1
%
CT Peak Voltage
2.6
2.8
V
CT Valley Voltage
1
1.2
V
CT Peak-to-Peak Voltage
1.6
1.8
2.0
V
Output Section
Output Low Voltage
IGATE = 200mA
1.6
2.2
V
Output High Voltage
IGATE = –200mA
9
10.3
V
Output Low Voltage
5V < VCC < 9V, IGATE = 10mA
0.5
V
VCAO < 0.8V, IGATE = 10mA
0.5
V
Rise/Fall Time
CL = 1nF
150
ns
Maximum Duty Cycle
(UC3886)
90
%
(UC2886, UC1886)
85
%
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