AH5792

NOT RECOMMENDED FOR NEW DESIGN USE AH9485/AH9486 AH5792 SINGLE PHASE HALL EFFECT LATXCHXXSXMXART FAN MOTOR CONTROLLER Description The AH5792 is a single chip solution for driving single-coil brush-less DC fans and motors. The AH5792 employs a bidirectional full bridge driver output stage for single coil fan motor applications. The device includes features such as Rotor Lock Protection with rotor lock detection and automatic self-restart to avoid damage to the coil when the rotor is blocked. The AH5792 also offers an externally controlled Tachometer (Frequency Generator Pin) open-drain output which makes it easier to connect with external interface such as hardware monitoring. The FG is half (1/2) the magnetic change frequency. Pin Assignments ( Top View ) O2 1 5 FG VSS 2 NC O1 3 SOT553 4 Vdd The devices are packaged in SOT553 and SOT89-5L small outline packages for applications such as small motors like vibration motors or ultra thin cooling fans. ( Top View ) O2 1 5 FG Vss 2 NC O1 3 74 Vdd SOT89-5L Features Support Single-Phase Full Wave Min Fan Driver Built-in Hall Sensor Input Amplifier Low Voltage Startup (Vdd = 1.8V) Lock Detection and Automatic Self-Restart Without External Timing Capacitor, Reduces the Numbers of External Component Required FG Output Low Profile Package: SOT553 and SOT89-5L “Green” Molding Compound Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) For ...