GENERAL DESCRIPTION
Large output current is possible having a built in internal N channel MOSFET, and using an external coil and diode. Output voltage is programmable with 1.0V of standard voltage supply internal, and using externally connected components, output voltage (FB) can be set up at will. Build inside Current limit, Thermal Shutdown and enable functions. FEATURES
- Input voltage：3V to 20V - Output voltage：3.3V to 32V - Duty ratio：0% to 85% PWM control - Oscillation frequency：500KHz. Enable and Thermal Shutdown function. Internal Current limit. Built-in N-channel MOSFET SOP-8L with Exposed pad Pb-Free package. BLOCK DIAGRAM Vcc Phase Compensation + + Vref=1.0V Buffer Driver FB Regulator SW PWM Controller EN VEN 8uA Thermal Shutdown Oscillator 0.06V SGND PGND SS 1/10 Axelite Confidential Materials, do not copy or distribute without written consent. Rev.1.4 Jan.25, 2011 AX5201 PIN ASSIGNMET The package of AX5201 is SOP-8L-EP; the pin assignment is given by: Name ( Top View ) EN VCC FB SS 1 2 3 4 SOP-8L-EP (EP is connect to SW) Exposed pad 8 7 6 5 SGND PGND SW SW DESCRIPTION
SGND Signal Ground pin.
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