TPS3103 Datasheet, PDF (19/31 Pages) Texas Instruments – Ultralow Supply-Current Voltage Monitor With Optional Watchdog

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TPS3103, TPS3106, TPS3110
SLVS363F – AUGUST 2001 – REVISED NOVEMBER 2015
10 Power Supply Recommendations
These devices are designed to operate from an input supply with a voltage range between 0.9 V and 3.3 V.
Though not required, it is good analog design practice to place a 0.1-μF ceramic capacitor close to the VCC pin if
the input supply is noisy.
11 Layout
11.1 Layout Guidelines
Follow these guidelines to lay out the printed-circuit-board (PCB) that is used for the TPS310x and TPS3110x
family of devices.
• Place the V_DD decoupling capacitor close to the device.
• Avoid using long traces for the VCC supply node. The VCC capacitor (C_VDD), along with parasitic inductance
from the supply to the capacitor, can form an LC tank and create ringing with peak voltages above the
maximum V_DD voltage.
11.2 Layout Example
Pullup
Voltage
RP1
RSTVDD
Flag
MR
Signal
TPS3106
1
6
2
5
3
4
Pullup
CVDD _Voltage
RP2
RSTSENSE
Flag
Monitored
R1
Voltage
R2
Figure 19. Example Layout (DBV Package)
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