NCP81101A
NCP81101A
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NCP81101A DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
The MAX803/NCP803 is a cost−effective system supervisor circuit designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required.The MAX803/NCP803 is optimized to reject fast transient glitches on the VCC line. Low supply current of 0.5 μA (VCC = 3.2 V) make these devices suitable for battery powered applications.Features• Precision VCC Monitor for 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V Supplies• Precision Monitoring Voltages from 1.2 V to 4.9 V Available in 100 mV Steps• Four Guaranteed Minimum Power−On Reset Pulse Width Available (1 ms, 20 ms, 100 ms, and 140 ms)• RESET Output Guaranteed to VCC = 1.0 V• Low Supply Current• VCC Transient Immunity• No External Components• Wide Operating Temperature: −40°C to 105°C• Pb−Free Packages are AvailableTypical Applications• Computers• Embedded Systems• Battery Powered Equipment• Critical Microprocessor Power Supply Monitoring
Key Features
- Precision VCC Monitor for 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V Supplies
- Precision Monitoring Voltages from 1.2 V to 4.9 V Available in 100 mV Steps
- Four Guaranteed Minimum Power−On Reset Pulse Width Available (1 ms, 20 ms, 100 ms, and 140 ms)
- RESET Output Guaranteed to VCC = 1.0 V
- Low Supply Current
- VCC Transient Immunity
- No External Components
- Wide Operating Temperature: −40°C to 105°C
- Pb−Free Packages are Available
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Manufacturer | ON Semiconductor | Product Category ! | IC Chips |
FAQs
What is NCP81101A?
The NCP81101A is a high-performance dual MOSFET driver designed by ON Semiconductor. It is specifically designed for synchronous rectification in DC-DC converters, providing high efficiency and precise control in power management applications.
How Does NCP81101A Work?
The NCP81101A works by driving the gates of two external N-channel MOSFETs to control the synchronous rectification process in DC-DC converters. It ensures proper timing and minimal energy loss during the power conversion process, leading to improved efficiency and reduced power dissipation.
How Many Pins does NCP81101A have and What are the Functions of the Pinout Configuration?
The NCP81101A is housed in a 16-pin QFN (Quad Flat No-leads) package. The pinout configuration includes:
- PHASE1, BOOT1, GND1: Pins for controlling MOSFET 1.
- OUT1: Output pin for MOSFET 1.
- VS1: High side gate driver supply pin for MOSFET 1.
- PHASE2, BOOT2, GND2: Pins for controlling MOSFET 2.
- OUT2: Output pin for MOSFET 2.
- VS2: High side gate driver supply pin for MOSFET 2.
- HS: High side supply voltage pin.
- LS: Low side supply voltage pin.
- VCC: Control voltage supply pin.
- FB: Feedback pin for monitoring the converter output voltage.
What are the Pros and Cons of NCP81101A?
Pros:
- High Efficiency: Enhances the efficiency of DC-DC converters through synchronous rectification.
- Precise Control: Provides accurate timing and control of MOSFET switching, optimizing power conversion.
- Integrated Functions: Combines gate drivers and control features, simplifying circuit design and layout.
- Compact Package: The 16-pin QFN package offers space-efficient integration into power management systems.
Cons:
- Complexity: Requires a good understanding of synchronous rectification and MOSFET operation for proper implementation.
- External Components: May necessitate additional components such as bootstrap capacitors and external MOSFETs for a complete solution.
Are There Any Equivalents/Alternatives to NCP81101A for Recommendation?
- The NCP81151 from ON Semiconductor is a similar dual MOSFET driver designed for synchronous rectification.
- Alternatives to the NCP81101A include the IR4426 from Infineon and the LTC4440 from Analog Devices.
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