MAX15104EWL データシートの表示（PDF） - Maxim Integrated

部品番号

コンポーネント説明

メーカー

MAX15104EWL

Small 2A, Low-Dropout Linear Regulator in a 2.7mm x 1.6mm Package

Maxim Integrated 

MAX15104

Small 2A, Low-Dropout Linear Regulator

in a 2.7mm x 1.6mm Package

Input-Output (Dropout) Voltage

A regulator’s minimum input-to-output voltage differential

(dropout voltage) determines the lowest usable supply

voltage. The dropout voltage is simply the product of

regulator’s RDS(ON) for the pass device and rated load

current. The MAX15104’s RDS(ON) is 25mΩ, at 2A this

yields a dropout voltage of 50mV (see the Electrical

Characteristics and the Dropout Voltage vs. Output

Current graph in the Typical Operating Characteristics).

Noise, PSRR, and Transient Response

The MAX15104 is designed to achieve low dropout

voltage while still maintaining good noise, transient

response, and AC rejection. When operating from very

noisy sources, supply noise rejection and transient

response can be improved by increasing the values of

the input and output capacitors. The MAX15104 output

noise is typically 15µVRMS (see the Noise Density graph

in the Typical Operating Characteristics).

Thermal Considerations

in PCB Layout

The rated package dissipation strongly depends on the

copper area connected to the regulator. The maximum

power dissipation allowed in the package is 1538mW

(measured from the MAX15104 EV kit).

More power dissipation can be handled by the package if

great attention is given during PCB layout. For example,

using the top and bottom copper as a heatsink and

connecting the thermal vias to one of the middle layers

(GND) transfers the heat from the package into the board

more efficiently, resulting in lower junction temperature at

high power dissipation in some MAX15104 applications.

Furthermore, the solder mask around the IC area on both

top and bottom layers can be removed to radiate the heat

directly into the air. The maximum allowable power dis-

sipation in the IC is as follows:

PMAX = [(TJ(MAX) - TA)/(θJA)]

where (TJ(MAX) - TA) is the temperature difference

between the maximum-allowed die junction (+150°C) and

the surrounding air.

A sample layout is available on the MAX15104 EV kit.

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX15104EWL+ -40°C to +85°C

15 WLP

+Denotes a lead(Pb)-free/RoHS-compliant package.

Chip Information

PROCESS: BiCMOS

Package Information

For the latest package outline information and land patterns

(footprints), go to www.maximintegrated.com/packages. Note

that a “+”, “#”, or “-” in the package code indicates RoHS status

only. Package drawings may show a different suffix character, but

the drawing pertains to the package regardless of RoHS status.

PACKAGE PACKAGE

TYPE

CODE

OUTLINE

NO.

15 WLP W151B2+1 21-0205

LAND

PATTERN NO.

Refer to

Application

Note 1891

www.maximintegrated.com

Maxim Integrated │  9

Share Link: