BM1513

PWM Control 2-3A Step-Down Converter FEATURES  Input voltage: 3.6V to 18V.  Output voltage: 0.8V to VCC.  BM1513 is 2A ; BM1513A is 3A  Oscillation frequency: 400KHz  Soft-start, Current limit, Enable function  Thermal Shutdown function  Built-in internal SW P-channel MOS  replace AP151x series  SOP-8L Pb-Free Package. BM1513/A GENERAL DESCRIPTION BM1513/A consists of step-down switching regulator with PWM control. These devices include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc. BM1513/A provides low-ripple power, high efficiency and excellent transient characteristics. The PWM control circuit is able to very the duty ratio linearly from 0 up to 100%. This converter also contains an error amplifier circuit as well as a soft-start circuit that prevent s 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 400KHz to 60KHz. Also, an internal compensation block is built in to minimum external component count. These ICs can function as step-down switching regulators. They serve as ideal power supply units for portable devices when coupled with the SOP-8L mini-package, providing such outstanding features as low current consumption. Since this converter can accommodate an input voltage of up to 18V, it is also ideal when operating via an AC adapter. APPLICATIONS  portable DVD ...