DML1010FDK

Document number: DS40878 Rev. 3 - 2

8 of 11

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June 2022

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DML1010FDK

Application Information

General Description

The DML1010FDK is a single-channel, 6A load switch in an 8-pin U-DFN2020-8 (Type K) package. To reduce the voltage drop in high current rails,

the device implements an ultra-low resistance N-channel MOSFET, which can be operated over an input voltage range from 0.8V to 3.5V.

The device has very low leakage current during off state. This prevents downstream circuits from pulling high standby current from the supply.

Integrated control logic, driver, power supply and discharge FET eliminate the requirement for any external components, which reduce solution

size and bill of materials (BOM) count.

Enable Control

The DML1010FDK device allows for enabling the MOSFET in an active-high configuration. When the VBIAS supply pin has an adequate voltage

applied and the ON pin is at logic high level, the MOSFET is enabled. Similarly, when the ON pin is at logic low level, the MOSFET is disabled.

Power Sequencing

The DML1010FDK device functions with fixed power sequence, the performance of output turn-on delay may vary from what is specified. To

achieve the specified performance, there are two recommended power sequences:

1.)

VVBIAS  VIN  VON

2.)

VIN  VVBIAS  VON

Input Capacitor

A cap

acitor of 10μF or higher value is recommended to be placed close to the IN pins of DML1010FDK. This capacitor can reduce the voltage

drop caused by the in-rush current during the turn-on transient of the load switch. A higher value capacitor can be used to further reduce the

voltage drop during high-current application.

Output Capacitor

A capacitor of 0.1μF or higher value is recommended to be placed between the OUT pins and GND. The switching times are affected by the

capacitance. A larger capacitor makes the initial turn-on transient smoother. This capacitor must be large enough to supply a fast transient load in

order to prevent the output from dropping.

VIN and VBIAS Voltage Range

For optimal on-resistance of load switch, make sure VIN ≤ 1.5V + VVBIAS and VVBIAS is within the voltage range from 3.2V to 5.5V. On-resistance of

load switch is higher if VIN + 1.5V > VVBIAS. Resistance curves of a typical sample device at different VVBIAS = VIN at IOUT = -200mA are shown as

below.

IOUT vs. RDS(ON)

IOUT vs. RDS(ON)

IOUT (A)

IOUT (A)