AP1510 consists of step-down switch regulator and PWM control. These devices include reference voltage sources, oscillating circuits, error amplifiers and internal PMOS. The converter also contains an error amplifying circuit. Built-in enablement, overcurrent protection and short-circuit protection, operating frequency will be reduced from 300 KHZ to 30kHz when OCP or SCP occurs.
AP1510 has low ripple power, high efficiency and excellent transient characteristics. The PWM control circuit can change duty ratio linearly, from 0 to 100%. In addition, internal compensation blocks are built in to reduce the number of external components. By adding internal p-channel power MOS, coils, capacitors and externally connected diodes
These ics can act as step-down switching regulators. When combined with SO-8 packages, they can be used as an ideal power unit for portable devices, providing outstanding features such as low current consumption. Because the converter can accommodate up to 23V input voltage, it is also suitable for operation through AC adapters.
Applications
● Cellular Phones
● PC Motherboard
● LCD Monitor
● Graphic Card
● DVD-Video Player
● Telecom Equipment
● ADSL Modem
● Printer and Other Peripheral Equipment
● Microprocessor Core Supply
● Networking Power Supply
Typical Application Circuit
Block Diagram
Test Circuit
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