
TL783
HIGH-VOLTAGE ADJUSTABLE REGULATOR
SLVS036E – SEPTEMBER 1981 – REVISED FEBRUARY 2000
2
POST OFFICE BOX 655303 
 DALLAS, TEXAS 75265
functional block diagram
+
–
Protection
Circuit
OUT
IN
Vref
R1
R2
VO
VI
Error
Amplifier
ADJ
V
O
V
ref
1
R2
R1
absolute maximum ratings over operating temperature range (unless otherwise noted)
Input-to-output differential voltage, V
l
 – V
O
Operating free-air, T
A
; case, T
C
; or virtual junction, T
J
, temperature 
Package thermal impedance, 
θ
JA
 (see Notes 1 and 2) 
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 
Storage temperature range, T
stg
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), 
θ
JA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) – TA)/
θ
JA. Operating at the absolute maximum TJ of 150
°
C can impact reliability. Due to
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.
125 V
150
°
C
22
°
C/W
260
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
–65
°
C to 150
°
C
recommended operating conditions
MIN
MAX
UNIT
Input-to-output voltage differential, VI – VO
Output current, IO
Operating virtual junction temperature, TJ
125
V
15
700
mA
°
C
TL783C
0
125