ATS266

Features:

- On-chip Hall plate
- Operating voltage: 4V~28V
- Output current: 400mA(Continuous)
- Reverse protection diode only for chip reverse power connecting ^(Note)
- Output protection Zener breakdown Vz=56V(Typ)
- Package: SIP-4L

(Note)
Protection diode only exists at power pin(1,4) output, not including pin (2,3).


Application

- Dual-coil Brush-less DC Motor
- Dual-coil Brush-less DC Fan
- Revolution Counting
- Speed Measurement


Pinout




Specifications

Parameter	Symbol	Rating	Unit
Supply voltage	VCC	28	V
Output "OFF " voltage	Vout (off)	20	V
Output "ON" current	Io (con)	400	mA
	Io (hold)	500	mA
	Io (peak)	700	mA
Magnetic flux density	B	Unlimited	Gauss
Operating temperature range	Top	-20~+85	°C
Storage temperature range	Tstg	-65~+150	°C
Power dissipation (Note)	PD	550	mW

Note: See Performance Characteristic for other conditions


Description

ATS266 is an integrated Hall sensor with output drivers designed for electronic commutation of brush-less DC motor applications. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and complementary darlington open-collector drivers for sinking large current loads. An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range.

If a magnetic flux density (B) is larger than operate point (Bop), DO turn on (low) and DOB turn off (high). The outputs state is latched prior to release point (Brp) coming. if B< Brp, DO turn off and DOB turn on. ATS266 is rated for operation over temperature range from -20oC to 85 oC and voltage range from 4.0V to 28V. The devices are available in low cost die forms or rugged 4 pin SIP packages.