Evaluation Board User Guide

ADPL42002 Evaluation Boards

Evaluate: ADPL42002

Rev. 0

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General Description

The

ADPL42002

evaluation

boards

evaluate

the

ADPL42002, a 20V, 200mA, low noise, CMOS, low

dropout (LDO) linear regulator.

See the Ordering Information section for the two types of

evaluation boards available to evaluate the ADPL42002.

One board features a 6-lead, 2mm x 2mm LFCSP

package, while the other utilizes an 8-lead SOIC package.

The evaluation boards provide a 3.3V output over an input

range of 3.8V to 20V. The maximum output current is

200mA, but output current is also limited by the thermal

dissipation of the ADPL42002. The evaluation boards use

the adjustable version of the ADPL42002. A resistor

divider programs the output of the adjustable ADPL42002

to 3.3V. Noise performance for the adjustable ADPL42002

can be made comparable to a fixed output ADPL42002 by

installing optional RC network components into the

placeholders that the evaluation board printed circuit board

(PCB) designs provide. The evaluation boards can easily

be configured with a jumper for fixed output versions of the

ADPL42002 that normally have their SENS/ADJ pin

connected directly to the output.

In addition to connectors for the input voltage, output

voltage, EN control signal and ground, the evaluation

boards provide test points for the input, output, and SS pin

(for the LFCSP package) voltages. A jumper normally

connects the EN pin to the VIN input, but the jumper can

be repositioned so EN can be driven externally at its

connector instead. A pull-down resistor is also connected

to the EN pin to drive the pin low when the device needs

to be turned off.

For more details, refer to the ADPL42002 data sheet,

which must be consulted in addition to this user guide

when using the ADPL42002 evaluation boards.

Features and Benefits

• Input Voltage Range: 3.8V to 20V

• Resistor Programmed: 3.3V Output Voltage

• Maximum Output Current: 200mA

• Jumper Turns Regulator ON or Connects the EN Pin to

a Connector to Turn the Regulator ON or OFF

Externally

• Jumper Connects the SENSE/ADJ Pin to the Output

Through a Resistor Divider or Directly

• VIN, VOUT, and GND Test Points for Regulations and

Dropout Voltage Monitoring

• Component Placeholders for an RC Network that can

Reduce Noise when the SENSE/ADJ Pin Connects to

the Output Through a Resistor Divider

• Component Placeholder for a Soft-Start Capacitor

• SS Test Point for Soft-Start Voltage Monitoring -LFCSP

Package Evaluation Board Only

• 6-Lead (2mm x 2mm) LFCSP Package or an 8-Lead

SOIC Package

Ordering Information appears at end of data sheet.