PIN

NAME

FUNCTION

11

PGOOD

12

SPS

Spread-Spectrum Pin. Pull high for spread spectrum on and low for spread spectrum off.

13,14

PGND

Power Ground

15

BST

High-Side Driver Supply. Connect a 0.1µF capacitor between LX and BST for proper operation.

16–18

LX

Inductor Switching Node

19

N.C.

No Connection

20

FSYNC

Synchronization Input. The devices synchronize to an external signal applied to FSYNC. Connect

FSYNC to AGND to enable skip mode operation. Connect to BIAS or to an external clock to enable

fixed-frequency, forced-PWM mode operation. Do not leave the FSYNC pin unconnected.

—

EP

Exposed Pad. Connect EP to a large-area contiguous copper ground plane for effective power

dissipation. Do not use as the only IC ground connection. EP

must be connected to PGND.

www.maximintegrated.com

Maxim Integrated │ 10

MAX20002/MAX20003

36V, 220kHz to 2.2MHz, 2A/3A Fully

Integrated Step-Down Converters

with 15μA Operating Current

Pin Description (continued)