FPO

Duration

(t )

W

Transient

Amplitude

V

DD

V

TH

V

DD

RESET

GND

TPS3839K33

V

DD

RST

GND

mP

3.3 V

C

0.1

F

m

1

TPS3839

www.ti.com

SBVS193 – JUNE 2012

APPLICATION INFORMATION

APPLICATION CIRCUIT

Figure 2 shows an example typical application circuit.

Figure 2. Typical Application Circuit

VDD TRANSIENT REJECTION

transient duration and transient amplitude. Transient amplitude is measured from the bottom of the transient to

the negative threshold voltage of the TPS3839, as shown in Figure 3.

Figure 3. Voltage Transient Measurement

The TPS3839 does not respond to fast-duration, low-amplitude or long-duration, small-amplitude transients.

Figure 4 shows the relationship between the transient amplitude and duration required to trigger a reset. Any

combination of duration and amplitude above the curve generates a reset signal.

Figure 4. TPS3839 Transient Rejection

Copyright © 2012, Texas Instruments Incorporated

Submit Documentation Feedback

5

Product Folder Link(s): TPS3839