onsemi
Phoenix, AZ 85008
ESD Suppressors exceed ESD protection standard.
Offered in plastic, 3-leaded, 1.2 x 1.2 x 0.5 mm SOT-723 package, Ã-µESD dual series diodes provide 2 lines of protection for portable and battery powered applications. Models Ã-µESD3.3D and Ã-µESD5.0D clamp 30 kV ESD transients in less than 1 nsec and clamp ESD pulses to less than 7 V. ESD protection diodes feature leakage of 0.05 Ã-µA in off state and capacitance of 35 pF, which...
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Filterless Class-D Audio Amp suits portable applications.
From 5 V supply, NCP2820 delivers up to 2.65 W of continuous average power into 4 ohm bridge-tied load (BTL). Under same conditions, output power stage can provide 1.4 W into 8 ohm BTL load with less than 1% total harmonic distortion plus noise. Product has 2.5-5.5 V input voltage range and drives clean audio output. Featuring 90% power efficiency and shutdown current of 0.42 Ã-µA, unit does...
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DDR Memory Power Controller suits notebook applications.
Offered in DFN-22 leadless package, NCP5214 integrates VDDQ and VTT termination voltages to help simplify motherboard design and save space in compact, portable computers. Light-load efficiency of 92% and shutdown current of less than 5 Ã-µA help extend battery life. VTT termination voltage is supplied by linear regulator set to track one half of VDDQ voltage, which is supplied by...
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Transistors and Diodes are used in portable applications.
Digital transistors, bipolar transistors, small signal Schottkys, and small signal switching diodes are manufactured in SOT-723 flat-lead package, which measures 1.2 x 1.2 x 0.5 mm. Utilizing 1.44 mmÃ-² PCB area, discrete devices include 50 signal transistors and signal diodes suited for use in cell phones, PDAs, digital still cameras, and notebook computers.
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DC-DC Converter suits 400 mA battery-operated electronics.
Monolithic, step-up, switching Model NCP1423 boosts voltage from 1 or 2 NiMH or NiCd cells up to usable level of 1.8 or 3.3 V. Synchronous rectification eliminates external Schottky diode, while Ring-Killer eliminates high-frequency ringing in discontinuous conduction mode. Switching frequency up to 600 kHz allows for low profile inductor and output capacitor to be used. Other features include...
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MOSFET Driver suits ATX and SMPS power supplies.
Post regulation, dual N-Channel MOSFET Driver, Model NCP4330 features drive outputs for series FETs and free-wheeling synchronous FETs. It offers efficient means of deriving 3.3 V from 5 V power train while not requiring additional windings or terminals on power supply's power transformer. Secondary ac signal directly feeds NCP4330 to minimize power dissipation. Driver includes soft switching,...
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ESD Protection Diodes protect voltage-sensitive components.
Featuring 1.6 x 0.8 mm footprint, Series ESD5Z provides single line protection to portable and battery-operated applications. Available in 5 models, units clamp fast rising ESD pulses, preventing damage to voltage-sensitive components on board. Input waveform of 30 kV per IEC61000-4-2 standard can be clamped to less than 7 V in nanoseconds. Devices can dissipate up to 200 W with 8 x 20 Ã-µsec...
Read More »PFC Controllers work with power supplies.
Fixed-frequency, current-mode NCP1653 drives continuous conduction mode boost converters with power needs from 100 W to 3 kW. It can also operate with output voltage tracking input voltage, called follower boost. Designed for PFC boost circuits in power ranges up to 300 W, NCP1601 operates in fixed-frequency discontinuous conduction mode and/or variable frequency critical conduction mode. Both...
Read More »PWM Controllers offer PFC shut-down feature.
Current Mode Controllers Series NCP1230 and NCP1231 allow power supply designers to shut-down power factor correction stage in light or no-load conditions. Units offer cycle skipping at light loads, internal ramp compensation, and frequency dithering. Both series are available in 65, 100, and 133 kHz frequency options. Series NCP1230 integrates 2.5 ms soft-start, while Series NCP1231 offers...
Read More »Synchronous Rectifier suits power switching applications.
Self-contained BERS(TM) NIS6111 couples high-speed comparator and MOSFET driver with power MOSFET to create diode with same forward-drop characteristics as MOSFET, eliminating heat sinks. It is capable of blocking up to 24 V and has typical forward voltage drop of 0.1 V at forward current of 20 A. Offered in 9 x 9 mm QFN package, Model NIS6111 can be used as oring diode used in servers and...
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