FP5501CHP datasheet(8/12 Pages) FITIPOWER | Low-saturation, Low-voltage 2 Channels Bi-directional Motor Driver

Part #	FP5501CHP

Description	Low-saturation, Low-voltage 2 Channels Bi-directional Motor Driver

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Manufacturer	FITIPOWER [Fitipower Integrated Technology Inc.]

Direct Link	http://www.fitipower.com/en_US/index.asp

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FP5501-1.7-JAN-2013

FP5501

fitipower integrated technology lnc.

Function Description

Device Operation

The FP5501 is a dual full-bridge low voltage motor driver capable of operating one stepper motor or up to two

dc motors.

MOSFET output stages substantially reduce the voltage drop and the power dissipation of the

outputs of the FP5501 compared to typical drivers with bipolar transistors.

Internal circuit protection includes

thermal shutdown with hysteresis and crossover current protection.

The FP5501 is designed for portable

applications with a power-off (sleep mode) current of 100nA typical, and an operating voltage of 1.8V to 5.5V.

The FP5501 logic inputs are 3 to 5V logic compatible.

In conditions where the logic supply voltage drops below 1.8V, both the sink and the source voltage drop will

increase beyond the specified values.

In extreme cases, no power will be delivered to the motors.

However,

the device will not be damaged.

In stepping operation, the device can drive in either full- or half-step mode.

The stepping mode is set by the

signal pattern on the Inx terminals, as shown in the stepping timing diagrams.

Sleep Mode

Pulling all inputs to 0.4V or less, sends the FP5501 to sleep mode, during which it draws 100nA typical.

Thermal Shutdown

The FP5501 will disable the outputs if the junction temperature reaches 150ºC.

When thermal shutdown is

entered, after the junction temperature drops 15ºC, the outputs will be re-enabled.

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