Data Sheet

24

Rev. 1.2, 2015-01-12

TLS203B0

Application Information

6

Application Information

Note: The following information is given as a hint for the implementation of the device only and shall not be

regarded as a description or warranty of a certain functionality, condition or quality of the device.

Figure 5

Typical Application Circuit TLS203B0 (fixed voltage version)

Figure 6

Typical Application Circuit TLS203B0 (adjustable version)

Note: This is a very simplified example of an application circuit. The function must be verified in the real

application. 1) 2)

1) Please note that in case a non-negligible inductance at the input pin I is present, e.g. due to long cables, traces, parasitics,

etc, a bigger input capacitor

C

I may be required to filter its influence. As a rule of thumb if the I pin is more than six inches

away from the main input filter capacitor an input capacitor value of

C

I = 10 µF is recommended.

2) For specific needs a small optional resistor may be placed in series to very low ESR output capacitors

C

Q for enhanced

noise performance (for details please see “Bypass Capacitance and Low Noise Performance” on Page 25).

R

Load

C

BYP

C

Q

CI

I

GND

Q

EN

SENSE

BYP

TLS203B0

V

I

GND

10nF

10µF

1µF

V

Q

Calculation of V Q:

VQ = 1.22V x (1 + R2 / R1) + (IADJ x R2)

R

Load

C

BYP

CI

I

GND

Q

EN

ADJ

BYP

TLS203B0 (ADJ)

V

I

GND

10nF

10µF

1µF

C

Q

V

Q

R2

R1