ZSPM2000 Datasheet

© 2016 Integrated Device Technology, Inc.

37

January 27, 2016

5.3.

Input Voltage Sensing

The ZSPM2000 supports input voltage sensing for protection and monitoring. Therefore a voltage divider between

the input voltage and the VIN pin is required. The recommended resistor values for different input voltage ranges

can be found in Table 5.2. For different nominal input voltages, the respective component values with the maxi-

mum supported input voltage are listed. Optionally, a capacitor, typically 10nF, can be connected to the VIN pin to

help improve accuracy.

Figure 5.3

Input Voltage Sense Circuitry

Table 5.2

Input Voltage Sense Component Overview

Nominal

Input Voltage

Maximum

Input Voltage

R9

R8

12V

14.5V

20k

Ω

2.2k

Ω

8.0V

9.0V

12k

Ω

2.2k

Ω

5.0V

6.5V

8.2k

Ω

2.2k

Ω

VIN

Vin

R9

R8

ZSPM2000