Texas Instruments TL783CKC Datasheet

CHIP

TL783

HIGH-VOLTAGE ADJUSTABLE REGULATOR

SLVS036E – SEPTEMBER 1981 – REVISED FEBRUAR Y 2000

D

Output Adjustable From 1.25 V to 125 V
When Used With an External Resistor
Divider

D

700-mA Output Current

D

Full Short-Circuit, Safe-Operating-Area, and
Thermal-Shutdown Protection

D

0.001%/V Typical Input Voltage Regulation

D

0.15% Typical Output Voltage Regulation

D

76-dB Typical Ripple Rejection

D

Standard TO-220AB Package

KC PACKAGE

(TOP VIEW)

IN
OUT
ADJ

The OUT terminal is in electrical
contact with the mounting base.

TO-220AB

I

O

A

description

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-dif fused
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 inadvertently disconnected, 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.

The TL783C is characterized for operation over the virtual junction temperature range of 0°C to 125°C.

AVAILABLE OPTIONS

PACKAGED DEVICE

T

J

0°C to 125°C TL783CKC TL783Y

Chip forms are tested at 25°C.

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.

HEAT-SINK

MOUNTED

(KC)

FORM

(Y)

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.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Copyright  2000, Texas Instruments Incorporated

1

TL783
HIGH-VOLTAGE ADJUSTABLE REGULATOR

SLVS036E – SEPTEMBER 1981 – REVISED FEBRUAR Y 2000

functional block diagram

V

I

Error
Amplifier

–
+

Protection

Circuit

ADJ

absolute maximum ratings over operating temperature range (unless otherwise noted)

IN

OUT

VO[

R2

ǒ

V

ref

V

ref

Ǔ

1

)

R1

V

O

R1

R2

†

Input-to-output differential voltage, Vl – VO 125 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air, TA; case, TC; or virtual junction, TJ, temperature 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance, θ

(see Notes 1 and 2) 22°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

JA

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

†

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.

NOTES: 1. Maximum power dissipation is a function of TJ(max),

ambient temperature is PD = (TJ(max) – TA)/
variations in individual device electrical characteristics and thermal resistance, the built-in thermal overload protection may be
activated at power levels slightly above or below the rated dissipation.

2. The package thermal impedance is calculated in accordance with JESD 51.

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stg

θ

, and TA. The maximum allowable power dissipation at any allowable

θ

JA

JA

. Operating at the absolute maximum TJ of 150°C can impact reliability. Due to

recommended operating conditions

Input-to-output voltage differential, VI – V
Output current, I
Operating virtual junction temperature, T

2

O

O

J

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

MIN MAX UNIT

125 V

15 700 mA

TL783C 0 125 °C

PARAMETER

TEST CONDITIONS

†

UNIT

g

V

V

125 V

P ≤ rated dissipation

%/V

I

700 mA

T

25°C

g

I

700 mA

P ≤ rated dissipation

Peak output current

mA

TL783

HIGH-VOLTAGE ADJUSTABLE REGULATOR

SLVS036E – SEPTEMBER 1981 – REVISED FEBRUAR Y 2000

electrical characteristics at V

Input voltage
regulation

Ripple rejection ∆V

Output voltage
regulation

Output voltage change
with temperature

Output voltage
long-term drift

Output noise voltage f = 10 Hz to 10 kHz, TJ = 25°C 0.003%
Minimum

output current to
maintain regulation

ADJ input current 83 110 µA
Change in

ADJ input current
Reference voltage

(OUT to ADJ)

†

Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately.

‡

Input voltage regulation is expressed here as the percentage change in output voltage per 1-V change at the input.

NOTE 3: Due to the dropout voltage and output current-limiting characteristics of this device, output current is limited to less than 700 mA at

‡

p

input-to-output voltage differentials of less than 25 V.

–

= 20 V to

I

O

= 10 V, VO = 10 V, f = 120 Hz 66 76 dB

I(PP)

= 15 mA to

O

= 15 mA to

O

1000 hours at TJ = 125°C, VI – VO = 125 V 0.2%

VI – VO = 125 V 15 mA

VI – VO = 25 V, t = 1 ms 1100
VI – VO = 15 V, t = 30 ms 715
VI – VO = 25 V, t = 30 ms 700 900
VI – VO = 125 V, t = 30 ms 100 250

VI – VO = 15 V to 125 V, IO = 15 mA to 700 mA, P ≤ rated dissipation 0.5 5 µA
VI – VO = 10 V to 125 V,

See Note 3

l

– V

= 25 V, I

O

,

,

,

IO = 15 mA to 700 mA, P ≤ rated dissipation,

=

J

= 0.5 A, T

O

p

°

p

= 0°C to 125°C (unless otherwise noted)

J

TJ = 25°C 0.001 0.01
TJ = 0°C to 125°C 0.004 0.02

VO ≤ 5 V 7.5 25 mV
VO ≥ 5 V 0.15% 0.5%
VO ≤ 5 V 20 70 mV
VO ≥ 5 V 0.3% 1.5%

TL783C

MIN TYP MAX

0.4%

1.2 1.27 1.3 V

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3

TL783

PARAMETER

TEST CONDITIONS

†

UNIT

I

15 mA to 700 mA

g

I

700 mA

P ≤ rated dissipation

Peak output current

mA

HIGH-VOLTAGE ADJUSTABLE REGULATOR

SLVS036E – SEPTEMBER 1981 – REVISED FEBRUAR Y 2000

electrical characteristics at V

Input voltage
regulation

Ripple rejection ∆V

Output voltage
regulation

Output voltage change
with temperature

Output noise voltage f = 10 Hz to 10 kHz 0.003%

ADJ input current 83 µA
Change in

ADJ input current
Reference voltage

(OUT to ADJ)

†

Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately.

‡

Input voltage regulation is expressed here as the percentage change in output voltage per 1-V change at the input.

NOTE 3: Due to the dropout voltage and output current-limiting characteristics of this device, output current is limited to less than 700 mA at

‡

p

input-to-output voltage differentials of less than 25 V.

VI – VO = 20 V to 125 V, P ≤ rated dissipation 0.001 %/V

= 10 V, VO = 10 V, f = 120 Hz 76 dB

I(PP)

=

O

= 15 mA to

O

VI – VO = 25 V, t = 1 ms 1100
VI – VO = 15 V, t = 30 ms 715
VI – VO = 25 V, t = 30 ms 900
VI – VO = 125 V, t = 30 ms 250

VI – VO = 15 V to 125 V, IO = 15 mA to 700 mA, P ≤ rated dissipation 0.5 µA
VI – VO = 10 V to 125 V,

See Note 3

l

– V

= 25 V, I

O

,

IO = 15 mA to 700 mA, P ≤ rated dissipation,

= 0.5 A, T

O

p

= 25°C (unless otherwise noted)

J

VO ≤ 5 V 7.5 mV
VO ≥ 5 V 0.15%
VO ≤ 5 V 20 mV
VO ≥ 5 V 0.3%

TL783Y

MIN TYP MAX

0.4%

1.27 V

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265