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1
FEATURES
KTE (PowerFLEX ) PACKAGE
(TOP VIEW)
IN
OUT
ADJ
OUT
KC (TO-220) PACKAGE
(TOP VIEW)
OUT
IN
ADJ
OUT
OUT
KTT (TO-263) PACKAGE
(TOP VIEW)
IN
OUT
ADJ
DESCRIPTION/ORDERING INFORMATION
TL783
www.ti.com
............................................................................................................................................... SLVS036M – SEPTEMBER 1981 – REVISED APRIL 2008
HIGH-VOLTAGE ADJUSTABLE REGULATOR
2
• Output Adjustable From 1.25 V to 125 V When Thermal-Shutdown Protection
Used With an External Resistor Divider
• 0.001%/V Typical Input Voltage Regulation
• 700-mA Output Current
• 0.15% Typical Output Voltage Regulation
• Full Short-Circuit, Safe-Operating-Area, and
• 76-dB Typical Ripple Rejection
The TL783 is an adjustable three-terminal high-voltage regulator with an output range of 1.25 V to 125 V and a
DMOS output transistor capable of sourcing more than 700 mA. It is designed for use in high-voltage applications
where standard bipolar regulators cannot be used. Excellent performance specifications, superior to those of
most bipolar regulators, are achieved through circuit design and advanced layout techniques.
As a state-of-the-art regulator, the TL783 combines standard bipolar circuitry with high-voltage double-diffused
MOS transistors on one chip, to yield a device capable of withstanding voltages far higher than standard bipolar
integrated circuits. Because of its lack of secondary-breakdown and thermal-runaway characteristics usually
associated with bipolar outputs, the TL783 maintains full overload protection while operating at up to 125 V from
input to output. Other features of the device include current limiting, safe-operating-area (SOA) protection, and
thermal shutdown. Even if ADJ is disconnected inadvertently, the protection circuitry remains functional.
Only two external resistors are required to program the output voltage. An input bypass capacitor is necessary
only when the regulator is situated far from the input filter. An output capacitor, although not required, improves
transient response and protection from instantaneous output short circuits. Excellent ripple rejection can be
achieved without a bypass capacitor at the adjustment terminal.
ORDERING INFORMATION
(1)
T
J
PACKAGE
(2)
ORDERABLE PART NUMBER TOP-SIDE MARKING
PowerFLEX™ – KTE Reel of 2000 TL783CKTER TL783
0 ° C to 125 ° C TO-263 – KTT Reel of 500 TL783CKTTR TL783C
TO-220 – KC Tube of 50 TL783CKC TL783C
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com .
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging .
1
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.
2 PowerFLEX, PowerPAD are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 1981 – 2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

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