Datasheet

TS5205
Taiwan Semiconductor
Document Number: DS_P0000197 6 Version: I15
APPLICATION INFORMATION (CONTINUE)
Thermal Characteristics
The junction to ambient thermal resistance for the minimum footprint is 220
o
C/W, the maximum power dissipation
must not be exceeded for proper operation. Using the output voltage of 3.3V and an output current of 120mA, the
maximum input voltage can be determined. From the electrical characteristics table, the maximum ground
current for 120mA output current is 2.5mA.
445mW = (V
IN
– 3.3V) * 150mA + V
IN
* 2.5mA
445mW = V
IN
* 150mA – 3.3 * 150mA + V
IN
* 2.5mA
445mW = V
IN
* 150mA – 495mW + V
IN
* 2.5mA
950mW = V
IN
* 152.5mA
V
IN
(max) = 6.23V
Therefore, a 3.3V application at 150mA of output current can accept a maximum input voltage of 6.23V in a SOT-
25 package.
Fixed Output Regulator Design
Ultra Low Noise Fixed Voltage Application
Includes a 470pF capacitor for low noise operation and
shows EN connected to IN for an application where
enable/shutdown is not required. C
OUT
= 2.2µF minimum.
Low Noise Fixed Voltage Application
An example of a low noise configuration where
bypass is not required. C
OUT
= 2.2µF minimum
V
OUT
V
IN
EN
on
off
C
OUT
2.2µF
TS5205CX5xx
V
IN
V
OUT
C
OUT
2.2µF
C
BYP
470pF
TS5205CX5xx