National Manuals

LM22679 is a 5A step-down voltage regulator with adjustable soft-start and current limit. It features a wide input voltage range, internally compensated voltage mode control, stable with low ESR ceramic capacitors, 100 mΩ N-channel MOSFET, adjustable soft-start function, and ±1.5% feedback.

LM2655 2.5A High Efficiency Synchronous Switching Regulator is a high efficiency, compact, low cost DC/DC converter.

This datasheet provides detailed information on the ADC10154/ADC10158 10-bit plus sign 4 µs ADCs, including the 4- or 8-channel analog input multiplexers, track/hold function, and a 2.5V band-gap reference.

LM2585 SIMPLE SWITCHER® 3A Flyback Regulator is a monolithic integrated circuit specifically designed for flyback, step-up (boost), and forward converter applications. It requires a minimum number of external components, these regulators are cost effective, and simple to use.

National Semiconductor Corporation released DP83849IF PHYTER® DUAL Industrial Temperature with Fiber Support (FX) and Flexible Switching Dual Port 10/100 Mb/s Ethernet Physical Layer Transceiver technology. This product has two fully independent 10/100 ports, suitable for multi-port applications, supports MII and RMII interfaces, and also supports copper and fiber media. It also includes a powerful new diagnostic tool to ensure initial network operation and maintenance.

The ADC12048 is a 12-bit + sign, parallel I/O, self-calibrating, sampling analog-to-digital converter (ADC) with an eight input fully isdifferential analog multiplexer manufactured by National Semiconductor. It has a maximum sampling rate of 216 kHz and can be self-calibrated for linearity, zero and full-scale errors. The ADC12048's 8-channel multiplexer is software program- mable to operate in a variety of combinations of single-ended, differential, or pseudo-differential modes. The fully differential MUX and the 12-bit + sign ADC allows for the difference between two signals to be digitized. The ADC12048 can be configured to work with many popular microprocessors/microcontrollers and DSPs including Na- tional's HPC family, Intel386 and 8051, TMS320C25, Mo- torola MC68HC11/16, Hitachi 64180 and Analog Devices ADSP21xx. For complementary voltage references see the LM4040, LM4041 or LM9140.

DM54121�DM54121�DM74121 One-Shot with Clear and Complementary Outputs is a monostable multivibrator featuring both positive and negative edge triggering with complementary outputs

LMC6462/4 is a low power, operational amplifier, its input and output are rail to rail, it has very low power consumption. The LMC6462/4 input voltage range exceeds both rails. The rail-to-rail output swing of the amplifier, guaranteed for loads down to 25 kΩ, assures maximum dynamic sigal range. This rail-to-rail performance of the amplifier, combined with its high voltage gain makes it unique among rail-to-rail amplifiers. The LMC6462/4 is an excellent upgrade for circuits using limited common-mode range amplifiers. The LMC6462/4, with guaranteed specifications at 3V and 5V, is especially well-suited for low voltage applications. A quiescent power consumption of 60 µW per amplifier (at VS = 3V) can extend the useful life of battery operated systems. The amplifier's 150 fA input current, low offset voltage of 0.25 mV, and 85 dB CMRR maintain accuracy in battery-powered systems.

LP3852/LP3855 1.5A Fast Response Ultra Low Dropout Linear Regulators

The LM3876 is a high-performance audio power amplifier capable of delivering 56W of continuous average power to an 8Ω load with 0.1% THD+N from 20Hz–20kHz.

The LM384 is a National Semiconductor power audio amplifier for consumer applications. The gain is internally fixed at 34 dB, the input stage allows ground referenced input signals, the output automatically self-centers to one-half the supply voltage, the output is short-circuit proof with internal thermal limiting.

The LM2660/LM2661 switched capacitor voltage converter is a CMOS charge pump voltage converter that inverts a positive voltage in the range of 1.5V to 5.5V to the corresponding negative voltage. The LM2660/LM2661 uses two low cost capacitors to provide 100mA of output current without the cost, size, and EMI related to inductor based converters. With an operating current of only 120µA and operating efficiency greater than 90% at most loads, the LM2660/LM2661 provides ideal performance for battery powered systems. The LM2660/LM2661 may also be used as a positive voltage doubler. The oscillator frequency can be lowered by adding an external capacitor to the OSC pin. Also, the OSC pin may be used to drive the LM2660/LM2661 with an external clock. For LM2660, a frequency control (FC) pin selects the oscillator frequency of 10kHz or 80kHz. For LM2661, an external shutdown (SD) pin replaces the FC pin. The SD pin can be used to disable the device and reduce the quiescent current to 0.5µA. The oscillator frequency for the LM2661 is 80kHz.

The LP3982 is a micropower, ultra low-dropout, low-noise CMOS regulator. It is available in 1.8V, 2.5V, 2.77V, 2.82V, 3.0V, 3.3V, and adjustable versions, delivering 300mA of output current. The LP3982 is suitable for battery powered applications due to its low quiescent current, low dropout voltage, and shutdown mode, allowing for more efficient utilization of battery energy.