The NR887D is synchronous buck regulator ICs integrates High-side and Low-side power MOSFETs. With the current mode control, ultra low ESR capacitors such as ceramic capacitors can be used. The ICs have protection functions such as Over-Current Protection (OCP), Under-Voltage Lockout (UVLO) and Thermal Shutdown (TSD). An adjustable Soft-Start by an external capacitor prevents the excessive inrush current at turn-on. The ICs integrate phase compensation circuit which reduces the number of external components and simplifies the design of customer application. The ON/OFF pin (EN Pin) turns the regulator on or off and helps to achieve low power consumption requirements. The NR887D is available in an 8-pin DIP package.
Feature
- Current mode PWM control
- Maximum efficiency: 95％
- Stable with low-ESR ceramic output capacitors
- Built-in Protection functions: Overcurrent protection (OCP): drooping type auto restart Thermal shutdown (TSD): auto restart Undervoltage (UVLO) circuit
- Built-in phase compensation, with no need for external components
- Adjustable soft-Start with an external capacitor
- ON/OFF function
Applications
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l LCD-TVl Blu-Rayl Power supply for digital appliances
