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UC2886DG4 Fiches technique(PDF) 2 Page - Texas Instruments

No de pièce UC2886DG4
Description  Average Current Mode PWM Controller IC
Download  9 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

UC2886DG4 Fiches technique(HTML) 2 Page - Texas Instruments

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UC2886
UC3886
CONNECTION DIAGRAM
DIL-16, SOIC-16 (Top View)
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,
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)
15
mV
Input Bias Current
VCM = 3.0V
−2
µA
Input Offset Current
VCM = 3.0V (UC3886)
0.01
µA
VCM = 3.0V (UC2886)
0.1
µA
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 = –100µA (UC3886)
3.95
4
4.05
V
ICOMP = –100µA (UC2886)
3.9
4.1
V
Output Low Voltage (Clamp)
ICOMP = 100µA
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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