AH173-PG-B-A Diodes Incorporated

AH173 INTERNAL PULL-UP HALL EFFECT LATCH FOR HIGH TEMPERATURE Description Pin Assignments AH173 is a single-digital-output Hall-Effect latch sensor with (Top View) pull-up resistor for high temperature operation. The device 3. OUT includes an on-chip Hall voltage generator for magnetic sensing, an amplifier to amplify Hall voltage, a comparator to 2. GND provide switching hysteresis for noise rejection, and an Vcc 1. output driver with a pull-up resistor (Rpu). An internal band- gap regulator provides a temperature compensated supply SIP-3L voltage for internal circuits and allows a wide operating supply range. (Top View) When the magnetic flux density (B) is larger than operate point (Bop), output is switched on (OUT pin is pulled low). 3. OUT The output state is held on until a magnetic flux density GND 2. reversal falls below Brp. When B is less than Brp, the output 1. Vcc is switched off. SC59 The AH173 is available in SIP-3L and SC59 packages. Applications Features Rotor Position Sensing Bipolar Hall-Effect latch sensor Current Switch 3V to 20V DC operating voltage Encoder Built-in pull-up resistor RPM Detection 25mA output sink current Operating temperature: -40 C to +125C SIP-3L and SC59 packages (SC59 is commonly known as SOT23 in Asia) Green Molding Compound (No Br, Sb) (Note 1) Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at AH173 INTERNAL PULL-UP HALL EFFECT LATCH FOR HIGH TEMPERATURE Pin Descriptions Pin Name Pin Description Vcc 1 Positive Power Supply GND 2 Ground OUT 3 Output Stage Functional Block Diagram V CC 1 Rpu REG. 3 OUT AMP 2 GND Absolute Maximum Ratings (T = 25 C) A Symbol Characteristics Values Unit V Supply Voltage 20 V CC V (off) Output Off Voltage 20 V OUT I (sink) Output On Current 25 mA O Ts Storage Temperature Range -65~+150 C T Maximum Junction Temperature +150 C J SIP-3L 550 mW P Power Dissipation D SC59 230 mW Recommended Operating Conditions Symbol Characteristic Conditions Min Max Unit V Supply Voltage Operating 3 20 V CC T Operating Ambient Temperature Operating -40 125 C A 2 of 9 July 2010 AH173 Diodes Incorporated www.diodes.com Document number: DS31044 Rev. 10 - 2