General Description

The MAX15022 evaluation kit (EV kit) circuit demon-

strates the MAX15022 IC, which integrates two high-

performance PWM switching step-down regulators and

two low-dropout (LDO) controllers. Each controller and

regulator features independent enable controls for

power-up sequence operation. The EV kit is designed

to operate from a single 4.5V to 5.5V DC power supply.

The synchronous step-down outputs provide 3.3V/4A

and 1.5V/2A, and can be configured for power-up

sequencing or tracking operation. The converter

switching frequency is set to 2MHz and operates 180°

out-of-phase, reducing input voltage ripple and total

RMS input ripple current. The LDO outputs provide

2.5V and 1.2V, at up to 500mA each. Each LDO con-

troller is powered from either the input power source or

one of the regulator outputs.

Features

o 4.5V to 5.5V Input Range

o Regulator Outputs

3.3V at 4A

1.5V at 2A

o 2MHz Switching Frequency

o LDO Outputs

2.5V (Up to 500mA)

1.2V (Up to 500mA)

o Independent Enable Inputs for All Outputs

o Configurable Power-Up Sequencing for Outputs

o Configurable Power-Up Tracking for Regulators

(VOUT1, VOUT2)

o Thermal Shutdown and Hiccup-Mode Short-

Circuit Protection

o Fully Assembled and Tested

MAX15022 Evaluation Kit

________________________________________________________________

Maxim Integrated Products

1

19-4101; Rev 0; 5/08

Component List

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Ordering Information

PART

TYPE

MAX15022EVKIT+

EV Kit

DESIGNATION

QTY

DESCRIPTION

C1

1

150µF ±20%, 10V aluminum

electrolytic capacitor

(6.6mm x 6.6mm)

Panasonic EEEFK1A151P

C2, C4, C9,

C10, C14, C18

6

0.1µF ±10%, 16V X7R ceramic

capacitors (0603)

Murata GRM188R71C104K

C3, C8, C11,

C12, C19, C21

6

10µF ±10%, 6.3V X7R ceramic

capacitors (0805)

Murata GRM21BR70J106K

C5

1

180pF ±5%, 50V C0G ceramic

capacitor (0603)

Murata GRM1885C1H181J

C6

1

390pF ±5%, 50V C0G ceramic

capacitor (0603)

Murata GRM1885C1H391J

C7, C16

2

10pF ±5%, 50V C0G ceramic

capacitors (0603)

Murata GRM1885C1H100J

C13, C23, C24

0

Not installed, capacitors (0805)

DESIGNATION

QTY

DESCRIPTION

C15

1

68pF ±5%, 50V C0G ceramic

capacitor (0603)

Murata GRM1885C1H680J

C17

1

270pF ±5%, 50V C0G ceramic

capacitor (0603)

Murata GRM1885C1H271J

C20, C22

2

1µF ±10%, 10V X7R ceramic

capacitors (0805)

TDK C2012X7R1A105K

C25, C26

0

Not installed, ceramic capacitors

(0603)

C27, C28

2

2200pF ±10%, 16V X7R ceramic

capacitors (0603)

Murata GRM188R71C222K

JU1–JU4

4

3-pin headers

L1

1

0.47µH, 5A inductor

Vishay IHLP-1616BZ-ER-R47-M-01

L2

1

1µH, 4A inductor

Vishay IHLP-1616BZ-ER-1R0-M-01

+

Denotes lead-free and RoHS-compliant.