| Power Management (PMIC) | 1 | Obsolete | |
NCP3418Dual Bootstrapped 12 V MOSFET Driver | Power Management (PMIC) | 3 | Active | The NCP3418 and NCP3418A are dual MOSFET gate drivers optimized to drive the gates of both high-side and low-side power MOSFETs in a synchronous buck converter. Each of the drivers is capable of driving a 3000 pF load with a 25 ns propagation delay and a 20 ns transition time. With a wide operating voltage range, high or low side MOSFET gate drive voltage can be optimized for the best efficiency. Internal, adaptive nonoverlap circuitry further reduces switching losses by preventing simultaneous conduction of both MOSFETs. |
NCP3420MOSFET Driver with Dual Outputs for Synchronous Buck Converters | Gate Drivers | 1 | Active | The NCP3420 is a single phase MOSFET gate driver optimized to drive the gates of both high-side and low-side power MOSFETs in a synchronous buck converter. The high-side and low-side driver is capable of driving a 3000 pF load with a 30 ns propagation delay and a 20 ns transition time. With a wide operating voltage range, high or low side MOSFET gate drive voltages can be optimized for the best efficiency. Internal adaptive nonoverlap circuitry reduces switching losses by preventing simultaneous conduction of both MOSFETs. Both gate outputs can be driven low by applying a low logic level to the Output Disable pin. An Undervoltage Lockout function ensures that both the driver outputs are low when the supply voltage is low, and a Thermal Shutdown function provides the IC with overtemperature protection. |
NCP346Overvoltage Protection Circuit | Circuit Protection | 2 | Obsolete | The NCP346 overvoltage protection circuit (OVP) protects sensitive electronic circuitry from overvoltage transients and power supply faults when used in conjunction with an external P-channel FET. The device is designed to sense an overvoltage condition and quickly disconnect the input voltage supply from the load before any damage can occur. The OVP consists of a precise voltage reference, a comparator with hysteresis, control logic, and a MOSFET gate driver.The OVP is designed on a robust BiCMOS process and is intended to withstand voltage transients up to 30 V. The device is optimized for applications that have an external AC/DC adapter or car accessory charger to power the product and/or recharge the internal batteries.The nominal overvoltage threshold options are 4.45 or 5.5 V and can be adjusted upward with a resistor divider between the VCC, IN, and GND pins. It is suitable for single cell Li-Ion applications as well as 3/4 cell NiCD/NiMH applications. |
NCP347Positive Overvoltage Protection Circuit with Internal Low R<sub>on</sub> NMOS FET and Status Flag | Transient Voltage Suppressors (TVS) | 1 | Active | The NCP347 is able to disconnect the systems from its output pin in case wrong input operating conditions are detected. The system is positive overvoltage protected up to +28 V.Due to this device using internal NMOS, no external device is necesary, reducing the system cost and the PCB area of the application board.The NCP347 is able to instantaneously disconnect the output from the input, due to integrated Low RonPower NMOS (65 mΩ, if the input voltage exceeds the overvoltage threshold (5.63 or 5.9 or 7.2 V) or undervoltage threshold, of 2.95 V (UVLO).At powerup (EN(BAR) pin = low level), the Voutturns on 50 ms after the Vinexceeds the undervoltage threshold.The NCP347 provides a negative going flag(FLAG(BAR)) output, which alerts the system that a fault has occurred.In addition, the device has ESD-protected input (15 kV Air) when bypassed with a 1.0 µF or larger capacitor. |
| TVS | 5 | Active | |
NCP3488Dual Bootstrapped 12 V MOSFET Driver | Integrated Circuits (ICs) | 1 | Obsolete | MOSFET Driver with dual outputs for synchronous buck converters |
| Power Management (PMIC) | 2 | Obsolete | |
| TVS | 5 | Active | |
NCP361Overvoltage Protection Circuit, USB Positive, with Internal PMOS FET and Overcurrent Protection | TVS | 1 | Active | NCP361 is able to disconnect the system from its output pin in case wrong VBUS operating conditions are detected. The system is positive overvoltage protected up to +20 V. Thanks to the integrated PMOS FET, no external device is necessary, reducing the system cost and the PCB area of the application board. NCP361 is able to instantaneously disconnect the output from the input if the input voltage exceeds the overvoltage threshold (OVLO).Thanks to an overcurrent protection, the integrated PMOS is turning off when the charge current exceeds current limit (see options in ordering information). NCP361 provides a negative-going flag (FLAG) output, which alerts the system that a fault has occurred. In addition, the device has ESD protected input (15 kV Air) when bypassed with a 1.0 µF or larger capacitor. |