PAM8016

Document number: DS40362 Rev. 2.0

7 of 10

www.diodes.com

June 2018

© Diodes Incorporated

PAM8016

How to Reduce EMI

Most applications require a ferrite bead filter for EMI elimination shown at Figure 2 if any concern for EMI issue. The ferrite filter reduces EMI

around 1MHz and higher. When selecting a ferrite bead, choose one with high impedance at high frequencies but low impedance at low

frequencies.

Figure 2: Ferrite Bead Filter to Reduce EMI

Shutdown Operation

To reduce power consumption when not in use, the PAM8016 contains shutdown circuitry when logic low is placed on the SD pin. By switching the

shutdown pin connected to GND, the PAM8016 supply current draw is minimized in idle mode.

Undervoltage Lockout (UVLO)

The PAM8016 incorporates circuitry designed to detect low supply voltage. When the supply voltage drops to 2V or below, the PAM8016 goes into

a state of shutdown. The device comes out of its shutdown state and restores to normal function only when VDD is higher than 2.2V.

Short-Circuit Protection (SCP)

The PAM8016 has short-circuit protection circuitry on the outputs to prevent the device from damage when output-to-output shorts or output-to-

GND shorts occur. When a short circuit occurs, the device immediately goes into shutdown state. Once the short is removed, the device is

reactivated.

Over Temperature Protection (OTP)

Thermal protection on the PAM8016 prevents the device from damage when the internal die temperature exceeds 150°C. There is a 15°C

tolerance on this trip point from device to device. Once the die temperature exceeds the set point, the device enters the shutdown state, and the

outputs are disabled. This is not a latched fault. The thermal fault is cleared once the temperature of the die decreased by 40°C. This large

hysteresis prevents motor boating sound, and the device begins normal operation at this point with no external system interaction.