ATS177

Features:

- 3.5V to 20V DC operation voltage
- Temperature compensation
- Wide operating voltage range
- Open-Collector pre-driver
- 25mA maximum sinking output current.
- Reverse polarity protection
- Package: SIP3, SOT23




Application

- Brush-less DC Motor
- Brush-less DC Fan
- Revolution counting
- Speed measurement




Pinout






Specifications

Characteristics		Symbol	Values	Unit
Supply voltage		VCC	20	V
Reverse Vcc Polarity Voltage		VRCC	-20	V
Magnetic flux density		B	Unlimited
Output OFF Voltage		Vce	30	V
Output "on" current	Continuous	Ic	25	mA
Operating temperature range		Ta	-20~+85	°C
Storage temperature range		Ts	-65~+150	°C
Maximum Junction Temp.		Tj	175	°C
Package Power Dissipation	SIP-3L	Pd	400	mW
	SOT23-3L		200	mW

Part Number	ATS177
Description	Single Hall Effect Latch
process	Bipolar
Operating Voltage (V)	3.5 ~ 20
Output Current (Ave)	25mA
Operating Point Bop (Gauss)	5/70 <100
Release Point Brp (Gauss)	-70/-5 >-100
Operating Ambient Temp Range (°C)	-20 to +85

Description

ATS177 is an integrated Hall effect latched sensor 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 open-collector output. 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 larger than threshold Bop, DO is turned on(low). The output state is held until a magnetic flux density reversal falls below Brp causing DO to be turned off (high).