AP5002

www.DataSheet4U.com AP5002 PWM CONTROL 2A STEP-DOWN CONVERTER Features Input voltage: 3.6V to 20V Output voltage: 0.8V to VCC Duty ratio: up to 100% PWM control Oscillation frequency: 500KHz typical Soft-start Current Limit, Enable function Thermal Shutdown function Built-in internal SW P-channel MOS Low ESR output capacitor (MLCC, multi-layer ceramic capacitor) support Efficiency 90% SOP-8L: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish / RoHS Compliant (Note 1) General Description AP5002 consists of step-down switching regulator with PWM control. These devices include a reference voltage source, oscillation circuit, error amplifier, internal PMOS. AP5002 provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to vary the duty ratio linearly up to 100%. This converter also contains an error amplifier circuit as well as a soft-start circuit that prevents overshoot at startup. An enable function, an over current protect function and a short circuit protect function are built inside, and when OCP or SCP happens, the operation frequency will be reduced from 500KHz to 50KHz. Also, an internal compensation block is built in to minimum external component count. With the addition of an internal P-channel Power MOS, a coil, capacitors, and a diode connected externally, these ICs can function as step-down switching regulators. They serve as ideal power supply units for portable d...