OBSOLETE
NR887D
Package : DIP8
RoHS : YES
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.
Data Download
Design Support
- Technical Documents
Technical Documents
Features
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・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
Application
l LCD-TVl Blu-Ray
l Power supply for digital appliances
Specifications
| Built-in Power | Power IC |
|---|---|
| Output Method | Variable |
| Output Voltage | 14.0 V |
| Output Current | 2.0 A |
| Input Voltage Range | 4.5 to 18 V |
| Operating Frequency | 500 kHz |
| Synchronous / Asynchronous | Synchronous |
| Current Mode Control | YES |
| Maximum Input Voltage | 18.00 V |
| Output On / Off | YES |
| Low ESR Capacitor Support | YES |
| Overcurrent Protection | Drooping Type |
| Phase Compensation | Built-in |
| Thermal Protection | YES |
| UVLO | YES |
| Package Weight (Typ.) | |
| Automotive Qualified |
Typical Application
Block Diagram
Physical Dimensions
Questions or Comments?
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