MAX77863 datasheet(4/12 Pages) MAXIM

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Evaluates: MAX77863

MAX77863 Evaluation Kit

EV Kit Features

Configuring the Buck Regulators

The IC features several different programmable options to

customize the behaviors of the four integrated buck regu-

lators during startup, operation, and shutdown. Figure 4

shows the portion of the GUI window that allows for con-

figuration of the buck regulators. Drag the slider and click

Write to change the output voltage. Other features of the

buck regulators which can be changed here include the

power modes, operating modes, and enabling/disabling

the active discharge resistors.

SD0 and SD1 also feature a software-controllable remote

sense which can be disabled here.

Configuring the LDOs

The IC features several different programmable options

to customize the behaviors of the nine integrated LDOs

during startup, operation, and shutdown. Figure 5 shows

the portion of the GUI window that allows for configuration

of the LDOs. Drag the slider and

Click write to change

the output voltage. Other features of the LDOs can also

be configured here such as the active discharge resistors

and soft-start slew rates.

Configuring the Flexible Power Sequencer

The IC features different power-up/down configurations

based on Maxim’s flexible power sequencer technology.

The power-up/down sequence must be configured prior

to any wake-up event and must be reconfigured after any

event which causes the registers to reset such as power-

down or undervoltage lockout.

To evaluate the device with a different power-up voltage,

use the following instructions:

1) Follow steps 2-8 of the Quick Start procedure. Do

not go to step 9.

2) Go to the “

FPS” section of the GUI and configure the

desired power-up/down sequence.

3) Press and hold SW1 for 1 second and monitor the

PMICs resources. The resources should power-up in

the new desired power-up sequence.

4) Press and hold SW1 for 3 seconds to initiate a

power-down and monitor the PMICs resources. The

resources should power-down in the new desired

power-down sequence.

5) Note that the power-down event resets the device’s

need to be rewritten again prior to power-up.

6) Different power-up/down sequences can be prepro-

grammed at the factory.

Figure 4. Step Down Configuration Portion of the EV Kit GUI

MAX77863 Datasheet(PDF) 4 Page - Maxim Integrated Products

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