National Manuals

The LP2981 is a 100 mA, fixed-output voltage regulator designed specifically to meet the requirements of battery-powered applications. It uses an optimized VIP™ (Vertically Integrated PNP) process to deliver unmatched performance in all specifications critical to battery-powered designs: Dropout Voltage. Typically 200 mV @ 100 mA load, and 7 mV @ 1 mA load. Ground Pin Current. Typically 600 µA @ 100 mA load, and 80 µA @ 1 mA load. Sleep Mode. Less than 1 µA quiescent current when ON/OFF pin is pulled low. Smallest Possible Size. SOT-23 and micro SMD packages use an absolute minimum board space. Precision Output. 0.75% tolerance output voltages available (A grade). Eleven voltage options, from 2.5V to 5.0V, are available as standard products.

The LM2591HV SIMPLE SWITCHER® Power Converter 150 kHz 1A Step-Down Voltage Regulator is a 1A step-down switching regulator from TI. It operates at a switching frequency of 150kHz and includes internal frequency compensation, external shutdown and a typical standby current of 90µA.

The ADC122S101 is a low-power, two-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. It supports 500kSPS to 1MSPS sample rate and SPI, QSPI, MICROWIRE and many common DSP serial interfaces.

LM117HV/LM317HV 3-Terminal Adjustable Regulator

The LM2743 is a high-speed, N-Channel synchronous buck regulator controller with a 2%, 0.6V feedback reference voltage intended to make down conversion from 3.3V to as low as 0.6V easy.

The LM22673 is a 3A single-chip switching power supply chip that integrates a low-dropout linear regulator and a switching power supply controller. It has internal compensation voltage mode control, high stability, wide output voltage range and output current up to 3A.

lp3996 is a dual low dropout linear regulator with power-on-reset function from national semiconductor company. its maximum output current is 300ma, and output accuracy is 1.5%.

The LM7171 is a high performance high output current voltage controlled amplifier from National. The chip has a very high conversion rate and a wide unit gain bandwidth, providing 4100V/µs conversion rate and 200MHz unit gain bandwidth while consuming only 6.5mA of supply current. The chip is ideal for video and high speed signal processing applications such as HDSL and pulse amplifiers. With 100mA output current, the LM7171 can be used for video distribution, transformer driver or laser diode driver. Operating on ±15V power supplies allows for large signal swings and provides greater dynamic range and signal-to-noise ratio. The LM7171 offers low SFDR and THD, ideal for ADC/DAC systems. In addition, the LM7171 is specified for ±5V operation for portable applications. The LM7171 is built on National's advanced VIP™ III (Vertically integrated PNP) complementary bipolar process.

The ADC104S021 is a low-power, four-channel CMOS 10-bit analog-to-digital converter with a high-speed serial interface. Unlike the conventional practice of specifying performance at a single sample rate only, the ADC104S021 is fully speci- fied over a sample rate range of 50 kSPS to 200 kSPS. The converter is based on a successive-approximation register architecture with an internal track-and-hold circuit. It can be configured to accept up to four input signals at inputs IN1 through IN4. The output serial data is straight binary, and is compatible with several standards, such as SPI™, QSPI™, MICROW- IRE, and many common DSP serial interfaces. The ADC104S021 operates with a single supply, that can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 1.94 mW and 6.9 mW, respec- tively. The power-down feature reduces the power consump- tion to just 0.12 µW using a +3V supply, or 0.47 µW using a +5V supply. The ADC104S021 is packaged in a 10-lead MSOP package. Operation over the industrial temperature range of −40˚C to +85˚C is guaranteed.

LMV1032 is an audio amplifier series designed for small form factor electret microphones. It is intended to replace the JFET preamp currently used. The LMV1032 series is ideal for applications requiring extended battery life, such as a Bluetooth communication link. The addition of a third pin in electret microphones incorporating the LMV1032 allows for a significant reduction in supply current compared to JFET-equipped electret microphones, reducing microphone supply current to 60µA, ensuring longer battery life. The LMV1032 series is guaranteed for supply voltages from 1.7V to 5V and has fixed voltage gains of 6dB, 15dB, and 25dB. The LMV1032 series offers low output impedance over the voice bandwidth, excellent power supply rejection (PSRR), and temperature stability. The devices are offered in a space-saving 4-bump ultra-thin micro SMD lead-free package, making them ideally suited for the form factor of miniature electret microphone packages.

LM3477 High Efficiency High-Side N-Channel Controller for Switching Regulator

The LP2980 is a 50 mA, fixed-output voltage regulator designed specifically to meet the requirements of battery-powered applications. The LP2980 delivers unequaled performance in all specifications critical to battery-powered designs.

LP2985 is a 150mA, fixed-output voltage regulator designed to provide ultra low dropout and low noise in battery powered applications. Using an optimized VIP™ (Vertically Integrated PNP) process, the LP2985 delivers unequaled performance in all specifications critical to battery powered designs:

The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator. The LM2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series of inductors optimized for use with the LM2576 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 µA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

The LMH6732 is a high speed op amp with a unique combination of high performance, low power consumption, and flexibility of application.