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Evaluates: MAX20332

MAX20332 Evaluation Kit

Detailed Description of Hardware

The MAX20332 EV kit evaluates the MAX20332 USB

charger detection with integrated overvoltage protector,

which communicates over the I2C interface. The EV kit

demonstrates the IC features such as charger detection,

overvoltage protection, and USB switch control. The EV

kit uses the IC in a 16-bump (1.6mm x 1.6mm) wafer-level

package (WLP) on a proven, four-layer PCB design. The

EV kit operates from the USB +5V DC and therefore does

not require an external power supply.

USB Connectors

The EV kit provides USB connectors to accommodate

the USB devices. Connect the output USB devices to the

USB2 and USB3 connectors and connect the input device

to the USB1 connector to evaluate the IC’s USB switches.

Test Points

The EV kit provides test points to access the IC input/

output signals. When charging a battery using a power-

management integrated circuit (PMIC), connect the PMIC

input to the OUT test point, connect the PMIC charger

enable pin to the CE test point, and connect the PMIC

charger output and ground to the VBAT and GND test

points, respectively. Connect the battery positive terminal

to the VBAT test point. Connect the battery negative

terminal to the GND test point.

DB Circuit

The EV kit provides circuits to indicate the DB (U1-A3)

output status. The circuits include U3, U4, N1, N2, D8,

D9, D10, and their associated resistors and capacitors.

The circuits are powered by OUT through jumper JU13.

When DB outputs a logic-low, LED D9 illuminates. When

DB

outputs high impedance, LED D10 illuminates.

Table 1. Jumper Table (JU1–JU13)

JUMPER

SHUNT

POSITION

DESCRIPTION

JU1

1-2*

On-board VB supply. Connects VBUS (USB4-1) to VB.

2-3

External VB supply. Externally supply VB with 3.5V to 36V.

JU2

1-2*

On-board VBAT supply. Connect INT_VBAT to VBAT.

2-3

External VBAT supply. Externally supply VBAT with 2.8V to 5.5V.

JU3

Closed*

On-board I2C. Connects the on-board SCL signal to the SCL test point.

Open

User-supplied I2C. Open the jumper and apply the SCL signal to the SCL test point.

JU4

Closed*

On-board I2C. Connects on-board SDA signal to the SDA test point.

Open

User-supplied I2C. Open the jumper and apply the SDA signal to the SDA test point.

JU5

Closed*

Connects the INT test point to an LED indicator.

Open

Disconnects the INT test point from an LED indicator.

JU6

Closed*

Connects the CE test point to an LED indicator.

Open

Disconnects the CE test point from an LED indicator.

JU7

Closed*

Connects the VB test point to an LED indicator.

Open

Disconnects the VB test point from an LED indicator.

JU8

Closed*

Connects the VBAT test point to an LED indicator.

Open

Disconnects the VBAT test point from an LED indicator.

JU9

Closed*

Connects the OUT test point to an LED indicator.

Open

Disconnects the OUT test point from an LED indicator.

JU10

1-2*

INT_VBAT = 2.3V.

1-3

INT_VBAT = 3.3V.

1-4

INT_VBAT = 4.2V.