Case Essay

9374 Words Mar 22nd, 2016 38 Pages
UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45
UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45

SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010

BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER
FEATURES

DESCRIPTION

D Enhanced Replacement for UC3842A Family
D
D
D
D
D
D
D
D
D
D

UCC38C4x family is a high-performance currentmode PWM controller. It is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UC384xA family and UC384x family of PWM controllers. In addition, lower startup voltage versions of 7 V are offered as
UCC38C40 and UCC38C41.

With Pin-to-Pin Compatibility
1-MHz Operation
50-μA Standby Current, 100-μA Maximum
Low Operating Current of 2.3 mA at
…show more content…
UDG--99139

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

Copyright © 2003 -- 2010, Texas Instruments Incorporated

www.ti.com

1

UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45
UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45
SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010

recommended operating conditions
MIN

MAX

UNIT

Input voltage, VDD

18

Output voltage range, VOUT

18

V

200

mA

--20

mA

105

°C

Average output current, IOUTW
Reference output current, IOUT(ref)W
Operating junction temperature, TJW


--40

V

It is not recommended that the device operate under conditions beyond those specified in this table for extended periods of time.

absolute maximum ratings over operating free-air temperature (unless otherwise noted)}w



Supply voltage (VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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