TK11900 TOKO, TK11900 Datasheet - Page 20

• Manufacturer Part Number: TK11900
• Description: ADJUSTABLE LOW DROPOUT REGULATOR
• Manufacturer: TOKO

TK119xx
The range of usable currents can also be found from the
graph below.
Procedure:
1) Find P
2) P
3) Plot P
4) Connect P
5) In design, take a vertical line from the maximum
6) Read off the value of P
The maximum operating current is:
Page 20
with a straight line.
operating temperature (e.g., 75 C) to the derating
curve.
vertical line intersects the derating curve. This is taken
as the maximum power dissipation, D
D1
D PD
P D
is taken to be P
I
(mW)
OUT
500
400
300
200
100
DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.)
D1
D
SOT-23L POWER DISSIPATION
0
against 25 C
0
= (D
D1
25
3
6
to the point corresponding to the 150 C
PD
/ (V
50
50
D
IN(MAX)
T A ( C)
x (~ 0.8 - 0.9)
D
T A ( C)
against the point at which the
75
MOUNTED
5
- V
100
FREE AIR
OUT
)
4
150
PD
.
150
January 1999 TOKO, Inc.