Datasheet

EVM Input/Output Connectors

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3 EVM Input/Output Connectors

Table 1. EVM Input/Output Connectors

Connector Description

J1 Supervisor-1 input and GND (default: 3.3 V - 12%)

J2 Supervisor-2 input and GND (Default: 2.5 V - 6%)

J3 Supervisor-3 input and GND (Default: 1.8 V - 7%)

J4 Supervisor-4 window and positive supply input and GND (default: 1.2 V ± 7%)

J5 Supervisor-4 negative supply input and GND (default: not configured)

J6 Watchdog timer input and GND

J7 VCC connector (1.8 V – 5.5 V)

J8 RESET1 output and GND

J9 RESET2 output and GND

J10 RESET3 output and GND

J11 RESET4 output and GND

J12 Watchdog timer output and GND

J13 Manual reset input and GND

J14 GND

J15 GND

4 General Operation and Functionality

The following paragraphs describe the functionality and operation of the TPS3860xxEVM-736.

4.1 Input Power

The TPS3860xx family of supervisors requires a VCC voltage between 1.8 V and 5.5 V. This voltage can

be supplied through J7 and its return through J14. The chip itself only requires 12 µA to operate.

4.2 Supervisor Inputs

The TPS3860xx supervisor inputs (SENSE1, SENSE2, SENSE3, SENSE4L, and SENSE4H) can be used

to monitor voltages down to 0.4 V. The default EVM configuration monitors 3.3 V - 12%, 2.5 V - 6%, 1.8 V

- 7%, and 1.2 V ± 7% through supervisors 1 through 4, respectively. If voltages other than the defaults are

desired, the SENSE input trip points can be adjusted by changing the resistor dividers using the following

equations as given in the data sheet (R

is the upper resistor, R

is the lower):

TPS3860xxEVM-736 Evaluation Modules SLVU450–March 2011

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