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MAX5097AAUP

40V, 600mA Buck Converters with Low Quiescent-Current Linear Regulator Mode

Maxim Integrated 

MAX5096/MAX5097

40V, 600mA Buck Converters with Low-

Quiescent-Current Linear Regulator Mode

PCB Layout Guidelines

1) Proper PCB layout is essential. Minimize ground noise

by connecting the anode of the freewheeling rectifier,

the input bypass capacitor ground lead, and the output

filter capacitor ground lead to a large PGND plane.

2) Minimize lead lengths to reduce stray capacitance,

trace resistance, and radiated noise. In particular,

place the Schottky/fast recovery rectifier diode right

next to the device.

3) Connect the exposed pad of the IC to the SGND

plane. Do not make a direct connection between the

exposed pad plane and SGND (pin 2) under the IC.

Connect the exposed pad and pin 2 to the SGND

plane separately. Connect the ground connection of

the feedback resistive divider, the soft-start capacitor,

the adjustable reset timeout capacitor, and the com-

pensation network to the SGND plane. Connect the

SGND plane and PGND plane at one point near the

input bypass capacitor at VIN.

4) Use the large SGND plane as a heatsink for the

MAX5096/MAX5097. Use large PGND and LX planes

as heatsinks for the rectifier diode and the inductor.

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

TYPE

16 TQFN

20 TSSOP

PACKAGE

CODE

T1655+2

U20E+4

OUTLINE

NO.

21-0140

21-0108

LAND

PATTERN NO.

90-0072

90-0115

Selector Guide

PART

MAX5096A_ _ _

MAX5096B_ _ _

MAX5097A_ _ _

MAX5097B_ _ _

OUTPUT

VOLTAGE

(V)

+3.3/Adjustable

+5.0/Adjustable

+3.3/Adjustable

+5.0/Adjustable

SWITCHING

FREQUENCY

(kHz)

135

135

330

330

www.maximintegrated.com

Maxim Integrated │  17

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