ing procedure:

1) Select a R2 resistance of 499kΩ or lower.

2) Calculate R1 using the following equation:

3) Remove the short located at R2.

4) Install resistors R1 and R2.

See Figure 2 for the MAX5092 EV kit schematic.

Setting the LDO Output Voltage (VOUT)

LDO output-voltage regulation also features Dual Mode

(MAX5092A/MAX5093A) or 5V (MAX5092B/MAX5093B)

by internal trimmed feedback resistors. The default EV

kit VOUT regulation mode is configured for the preset

mode by directly connecting SET to SGND (Figure 2).

MAX5092_ (or from 1.5V to 10V for the MAX5093_) by

selecting resistors R4 and R5. Note that the current

drawn by these resistors adds to the quiescent current

of the LDO. Use the adjustable output mode only if

use the following procedure:

1) Select an R5 resistance of 100kΩ or lower.

2) Calculate R4 using the following equation:

3) Remove the short located at R5.

4) Install resistors R4 and R5.

See Figure 2 for the MAX5092 EV kit schematic.

Adjusting the

RESET Timeout Period

The MAX5092 EV kit contains an open-drain power-on

reset output (

RESET) that indicates when the LDO out-

high after a user-programmable timeout period. This

time period is programmable by selecting the capaci-

tance of capacitor C5 (Figure 2). For a chosen

RESET

late the required C5 value in farads as:

The

RESET active timeout period is set for approxi-

mately 136ms by C5 in the default EV kit configuration.

Configuring for the MAX5093_

The MAX5092 EV kit can be configured to demonstrate

the MAX5093_. The MAX5093_ requires an external

switching diode (D1) connected between LX and

BSOUT (Figure 2). Proper selection of an external

diode can offer a lower forward-voltage drop and a

higher reverse-voltage handling capability. Since the

high-switching frequency of the IC demands a high-

speed rectifier, Schottky diodes are recommended for

most applications because of their fast recovery time

and low forward-voltage drop. Ensure that the diode’s

peak current rating is greater than or equal to the peak

inductor current. Additionally, the diode reverse break-

To configure the MAX5092 EV kit for use with the

MAX5093_, perform the following procedure:

1) Replace the MAX5092B IC with the MAX5093_ IC.

2) Install Schottky diode D1. See the

Component List

for recommended diode.

3) Configure the BSOUT and VOUT voltages as dis-

cussed in the

Evaluating Other Output Voltages

section.

C5

RESET_HIGH

=

××

−

210

124

6

t

.

RR

45

124

1

=×

−

(

.

)

RR

12

124

1

=×

−

(

.

)

MAX5092 Evaluation Kit

_______________________________________________________________________________________

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