National Manuals (Others)

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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.

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

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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.

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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.

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The DS90LV031A 3V LVDS Quad CMOS Differential Line Driver is a low power and high data rate quad LVDS differential line driver.

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The DP83849I PHYTER® DUAL is a highly reliable, feature-rich device perfectly suited for industrial applications enabling Ethernet on the factory floor. The DP83849I features two fully independent 10/100 ports for multi-port applications. NATIONAL’s unique port switching capability also allows the two ports to be configured to provide fully integrated range extension, media conversion, hardware-based failover, and port monitoring. The DP83849I provides optimum flexibility in MPU selection by supporting both MII and RMII interfaces. In addition, this device includes a powerful new diagnostics tool to ensure initial network operation and maintenance. In addition to the TDR scheme, commonly used for detecting faults during installation, NATIONAL’s innovative cable diagnostics scheme is also used to identify network faults.

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The CLC021 is a high-integration, high-performance SMPTE 259M digital video serializer that can convert video signals to serial data formats and transmit them through serial data interfaces. The product is mainly used in high-definition video monitoring, video conferencing, and high-definition video broadcasting.

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The LMV841/LMV842/LMV844 are low-voltage and low-power operational amplifiers that operate with supply voltages ranging from 2.7V to 12V and have rail-to-rail input and output capability. Their low offset voltage, low supply current, and MOS inputs make them ideal for sensor interface and battery-powered applications. The single LMV841 is offered in the space-saving 5-Pin SC70 package, the dual LMV842 in the 8-Pin MSOP and 8-Pin SOIC packages, and the quad LMV844 in the 14-Pin TSSOP and 14-Pin SOIC packages. These small packages are ideal solutions for area-constrained PC boards and portable electronics.

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The LM2700 is a step-up DC/DC converter with a 3.6A, 0.08Ω internal switch and pin selectable operating frequency. With the ability to produce 500mA at 8V from a single Lithium Ion battery, the LM2700 is an ideal part for biasing LCD displays. The LM2700 can be operated at switching frequencies of 600kHz and 1.25MHz allowing for easy filtering and low noise.

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The LM2742 is a high-performance synchronous switching buck regulator controller that can control currents of 0.7A to 20A with up to 95% conversion efficiencies.

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LMP7707/LMP7708/LMP7709 is a precision, CMOS input, RRIO, wide supply range decompensated amplifier.

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The ADC161S626 is a 16-bit successive-approximation register (SAR) Analog-to-Digital converter (ADC) with a maximum sampling rate of 250 kSPS. The ADC161S626 has a minimum signal span accuracy of ± 0.003% over the temperature range of −40°C to +85°C. The converter features a differential analog input with an excellent common-mode signal rejection ratio of 85 dB, making the ADC161S626 suitable for noisy environments. The ADC161S626 operates with a single analog supply (VA) and a separate digital input/output (VIO) supply. VA can range from +4.5V to +5.5V and VIO can range from +2.7V to +5.5V. This allows a system designer to maximize performance and minimize power consumption by operating the analog portion of the ADC at a VA of +5V while interfacing with a +3.3V controller. The serial data output is binary 2's complement and is SPI™ compatible. The performance of the ADC161S626 is guaranteed over temperature at clock rates of 1 MHz to 5 MHz and reference voltages of +2.5V to +5.5V. The ADC161S626 is available in a small 10-lead MSOP package. The high accuracy, differential input, low power consumption, and small size make the ADC161S626 ideal for direct connection to bridge sensors and transducers in battery operated systems or remote data acquisition applications.

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LM3502 is a white LED driver for lighting applications. It provides a complete solution for dual display or large single white LED string backlighting applications. The LM3502 includes two internal white LED current bypass FET switches that are ideal for controlling dual display applications. The white LED current can be adjusted with a PWM signal directly from a microcontroller without the need for an RC filter network. With features such as no external compensation, cycle-by-cycle current limit, over-voltage protection, and under-voltage protection, the LM3502 offers superior performance compared to other application specific standard product step-up white LED drivers.

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The LM386 is a low voltage audio power amplifier designed for use in low volt- age consumer applications

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LP38690/LP38692 1A Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors

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The LM5007 is a high-voltage step-down switching regulator from Linear Technology. It integrates an 80V, 0.7A N-channel buck switch, has a simple external circuit, the working frequency can be automatically adjusted according to the input voltage and load, and the output voltage is adjustable. It has thermal shutdown, undervoltage lockout, overcurrent protection, overload protection and other functions.

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The LM48411 is a single supply, high efficiency, 2.5W/channel Class D audio amplifier from National Semiconductor. It features the company's unique patented ultra low EMI, spread spectrum, PWM architecture, which significantly reduces RF emissions while preserving audio quality and efficiency. The E2S system also improves battery life, reduces external component count, board area consumption, system cost and simplifies design. The LM48411 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of delivering 2.5W/channel of continuous output power to a 4Ω load with less than 10% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V. The wide band spread spectrum architecture of the LM48411 reduces EMI-radiated emissions due to the modulator frequency. The LM48411 features high efficiency compared to a conventional Class AB amplifier. The E2S system includes an advanced, patented pending edge rate control (ERC) architecture that further reduce emissions by minimizing the high frequency component of the device output, while maintaining high quality audio reproduction and high efficiency (η = 87% at VDD = 3.6V, PO = 500mW). Four gain options are pin se- lectable through GAIN0 and GAIN1 pins.

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The DP84240 and DP84244 are octal TRI-STATE drivers designed for heavy capacitive load applications such as fast data buffers or as memory address drivers. The DP84240 is an inverting driver which is pin-compatible with both the 74S240 and AM2965. The DP84244 is a non-inverting driver which is pin-compatible with the 74S244 and AM2966. These parts are fabricated using an oxide isolation process for much faster speeds and are specified for 250 pF and 500 pF load capacitances. TRI-STATE is a registered trademark of National Semiconductor Corp.

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This document introduces the features and characteristics of the LM3406/06HV product. The LM3406/06HV is a monolithic switching regulator designed to deliver constant currents to high power LEDs. It is ideal for automotive, industrial, and general lighting applications. The product also supports pulse width modulation (PWM) dimming, which can be achieved using a dedicated logic pin or by PWM of the power input voltage.

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