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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： | 2/7页 |
| 文件大小： | 278K |
| 代理商： | UC1886J |
2
UC1886
UC2886
UC3886
CONNECTION DIAGRAM
DIL-16, SOIC-16 (Top View)
J, N, or D Packages
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ..................................20V
Output Current
CAM, COMMAND, VSENSE, ISN, ISP .............±1A
Analog Input .............................. –0.3V to 7V
Storage Temperature ................... –65°C to +150°C
Junction Temperature ................... –55°C to +150°C
Lead Temperatue (Soldering, 10 sec.) ............. +300°C
Currents are positive into, negative out of the specified terminal.
Consult Packaging Section of Databook for thermal limitations
and considerations of packages.
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
Overall
Supply Current
VCC = 11V, Gate Open
10
15
mA
VCC = 9.3V
5
mA
Undervoltage Lockout
Start Threshold
9.7
10.3
10.8
V
UVLO Hysteresis
0.25
0.4
V
Voltage Error Amplifier
Input Offset Voltage
VCM = 3.0V (UC3886)
4
mV
VCM = 3.0V (UC2886, UC1886)
15
mV
Input Bias Current
VCM = 3.0V
2
A
Input Offset Current
VCM = 3.0V (UC3886)
0.01
A
VCM = 3.0V (UC2886, UC1886)
0.1
A
Open Loop Gain
2.5V < VCOMP < 3.5V
60
85
dB
Common-Mode Rejection Ratio
2V < VCOMP <4V
60
85
dB
Power Supply Rejection Ratio
11V < VCC < 15V
60
85
dB
Output High Voltage (Clamp)
ICOMP = –100A (UC3886)
3.95
4
4.05
V
ICOMP = –100A (UC2886, UC1886)
3.9
4.1
V
Output Low Voltage (Clamp)
ICOMP = 100A
1.9
2.7
V
Output Sink Current
VCOMP = 3.7V
0.9
mA
Output Source Current
VCOMP = 2.8V
–0.15
0.25
mA
Gain-Bandwidth Product
F = 100kHz
2
3.5
MHz
5.0V Reference
Output Voltage
IVREF = 1.0mA
4.9
5
5.1
V
Total Variation
Line, Load, Temperature
4.825
5.175
V
Line Regulation
11V < VCC < 15V
10
mV
Load Regulation
0 < IVREF < 2mA
15
mV
Short Circuit Current
–10
40
mA
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