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Driver Chip

Audio Chip

FMRX2AMS

FMRX2AMS is a dedicated single-chip solution designed for toys such as remote control cars. The chip integrates two H-bridge drive circuits, which can drive the steering motor and the forward and backward motor at the same time. Single channel maximum continuous output current reaches 1.5A, maximum peak output current 2A. The forward/backward channel is used to drive the forward and backward motor, with a maximum continuous output current of 1.65A and a maximum peak output current of 2.5A; When the two channels work at the same time, the left/right turn channel can continuously output 0.8A, and the forward/backward channel can continuously output 1.4A. The chip has a wide operating voltage range (from 2V to 7.5V at the VCC end).

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FMRX2AMS features

Low static working current;
Integrated H-bridge drive circuit;
Highly integrated solution, integrated RX2 chip and two motor drive chips;
Built-in 2.6V voltage regulator LDO circuit;
Power MOSFET tube with low on-internal resistance;
Built-in overheating protection circuit (TSD) with hysteresis effect;
FMRX2AMS is available in a SOP16 package

FMRX2AMS application
2-5 AA/AAA dry battery powered toy motor drive;
Toy motor driven by 2-5 nickel-hydrogen/nickel-cadmium rechargeable batteries;
1-2 lithium battery powered motor drive

FMRX2AMS pin diagram and description

Typical application diagram of FMX2AMS

FMRX2AMS Absolute maximum rating

argument	symbol			Rated value	unit
Supply voltage	VCC			7.6	V
Power dissipation	Pd		DIP-16	1	W
			SOP-16	0.96	W
Thermal resistance	θJA		DIP-16	125	℃/W
			SOP-16	130	℃/W
Operating temperature	Topr			-20~85	℃
Junction temperature	Tj			150	℃
Storage temperature	Tstg			-55~150	℃
Hand welding temperature				350~370	℃
Peak output current	Iop	DIP-16		2.8	A
		SOP-16		2.5
Maximum continuous output current	Ioc	DIP-16		2.0	A
		SOP-16		1.5