Bump Configuration

Bump Description

BUMP

NAME

FUNCTION

A1

SYS

System (Battery) Voltage Input. Bypass to GND with a 1µF capacitor.

A2

EN

Active-High, Buck-Boost External Enable Input. An 800kΩ internal pulldown resistance to the GND.

A3

GND

Quite Ground. Star-ground connection to system GND.

A4

SDA

Connect to GND if not used.

A5

SCL

Connect to GND if not used.

B1

FB_BB

Buck-Boost Output Voltage Feedback

B2, C2, D2

LXBB2

Buck-Boost Switching Node 2

B3

GPIO

Multifunction GPIO:

MAX77816A/B/C: General Purpose Input. An 800kΩ internal pulldown resistance to the GND.

MAX77816D/E: Open-Drain Output. An external pullup resistor is required.

B4, C4, D4

LXBB1

Buck-Boost Switching Node 1

B5, C5, D5

INBB

Buck-Boost Input. Bypass to PGNDBB with a 10µF capacitor.

C1, D1

OUTBB

Buck-Boost Output

C3, D3

PGNDBB

Buck-Boost Power Ground. Star-ground connection to system GND.

20-BUMP WLP

(5mm x 4mm, 0.4mm PITCH)

LXBB1

PGNDBB

INBB

PGNDBB

LXBB2

LXBB2

FB_BB

LXBB1

LXBB2

INBB

OUTBB

OUTBB

GPIO

1

2

3

4

5

SCL

EN

SYS

GND

SDA

A

B

C

D

INBB

LXBB1

TO P VIEW

(BUM P SIDE DO W N)

+

MAX77816

High-Efficiency Buck-Boost Regulator

with 5A Switches

www.maximintegrated.com

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