Texas Instruments Evaluation Module for TPS3808G01 TPS3808G01DBVEVM TPS3808G01DBVEVM データシート

製品コード

TPS3808G01DBVEVM

Setup

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Setup

This section describes the jumpers and connectors on the EVM as well as how to properly connect, set
up, and use the TPS3808G01EVM.

2.1

Input / Output Connector Descriptions

J1: RST

This connector is the RST output. Connect this output to a multimeter, oscilloscope, or external circuit
to verify that RST goes low when MONITOR VOLTAGE goes below its threshold.

J2: MR

This connector is the manual reset input of the TPS3808G01. Pulling this pin low causes the device to
signal a reset. For convenience, pull this pin low by placing a short across the connector.

J3: MONITOR VOLTAGE

This connector is the voltage to be monitored. Connect J3 to a power supply or other voltage source.
RST should transition low when this voltage drops below its threshold.

J4: VDD

This connector is the power-supply connection for the TPS3808G01. It can be between 1.7 V and 6.5
V.

J5: GND

This connector is the return connection for the input power supply. It is electrically connected to J6.

J6: GND

This connector is the return connection for the power supply to be monitored. It is electrically
connected to J5.

JP2: RST Pull-Up

Connecting a short across JP2 connects a 10-k

pull-up resistor to the RST output.

JP3: Reset Timer

The setting of this jumper configures the reset delay of the device as described in

Table 1

Table 1. Reset Timer Settings

Setting

Description

Open

No connection to CT;

reset delay set to 20 ms

Short connected

CT connected to a timer capacitor;

across pins 1 and 2

reset delay set to 125 ms

Short connected

CT connected to a pull-up resistor;

across pins 2 and 3

reset delay set to 300 ms

JP5: Fixed Rail

Short this jumper for use of a fixed-voltage TPS3808Gxx device.

JP4: Adjustable Rail

Short this jumper for use of the adjustable-voltage TPS3808G01.

TPS3808G01EVM

SBVU015 – April 2010