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UC2902D Fiches technique(PDF) 2 Page - Texas Instruments

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No de pièce UC2902D
Description  LOAD SHARE CONTROLLER
Download  10 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

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UC2902
UC3902
SLUS232E − DECEMBER 19, 2002 − REVISED JULY 2011
2
www.ti.com
DESCRIPTION (continued)
A differential line is used for the share bus to maximize noise immunity and accommodate different voltage drops
in each power converter’s ground return line. Trimming of each converter’s output voltage is accomplished by
injecting a small current into the output voltage sense line, which requires a small resistance (typically 20 Ω to
100 Ω) to be inserted.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1)
UC2902
UC3902
UNIT
VCC, ADJ
−0.3 to 20
Input voltage range V
SENSE
−5 to 5
V
Input voltage range, VI
ADJR, COMP
−0.3 to 4
V
SHARE−, SHARE+
−0.3 to 10
Output current I
SHARE+
−100 mA to 10 mA
mA
Output current, IO
ADJ
−1 mA to 30 mA
mA
Operating free-air temperature range, TA
−40 to 100
Junction temperature range, TJ
−55 to 105
°C
Storage temperature, Tstg
−65 to 150
°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
300
(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is
not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Voltages are with respect to
GND. Currents are positive into, and negative out of the specified terminal.


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