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UC2845 Fiches technique(PDF) 2 Page - Texas Instruments

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No de pièce UC2845
Description  Current Mode PWM Controller
Download  8 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

UC2845 Fiches technique(HTML) 2 Page - Texas Instruments

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UC1842/3/4/5
UC2842/3/4/5
UC3842/3/4/5
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage (Low Impedance Source) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V
Supply Voltage (ICC <30mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Self Limiting
Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±1A
Output Energy (Capacitive Load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
µJ
Analog Inputs (Pins 2, 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.3V
Error Amp Output Sink Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Power Dissipation at TA
≤ 25°C (DIL-8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W
Power Dissipation at TA
≤ 25°C (SOIC-14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 725mW
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
Lead Temperature (Soldering, 10 Seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
Note 1: All voltages are with respect to Pin 5.
All currents are positive into the specified terminal.
Consult Packaging Section of Databook for thermal limitations and considerations
of packages.
CONNECTION DIAGRAMS
DIL-8, SOIC-8 (TOP VIEW)
N or J Package, D8 Package
PLCC-20 (TOP VIEW)
Q Package
SOIC-14 (TOP VIEW)
D Package
PACKAGE PIN FUNCTION
FUNCTION
PIN
N/C
1
COMP
2
N/C
3
N/C
4
VFB
5
N/C
6
ISENSE
7
N/C
8
N/C
9
RT/CT
10
N/C
11
PWR GND
12
GROUND
13
N/C
14
OUTPUT
15
N/C
16
VC
17
VCC
18
N/C
19
VREF
20
2


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