National Manuals

LM7221 is a micropower CMOS comparator available in two packages, SOT23-5 and SO-8. It is guaranteed to operate with supply voltages ranging from 2.7V to 15V. Its typical supply current is 7µA and its response time is 4µs. The output is open drain type.

The LP5951 is a low-power, 150mA low-dropout CMOS voltage regulator from National Semiconductor. The device is available in SOT23-5 and SC70-5 packages and offers an output voltage range of 1.3V to 3.3V. The input voltage range is 1.8V to 5.5V. The LP5951 features an extremely low quiescent current of 29µA and excellent line transient response of ±2mV. The device also features logic controlled enable (0.4V/0.9V) and fast turn-on time of 30µs. In addition, the LP5951 offers thermal-overload and short-circuit protection.

PC87382 is an LPC to LPC switch for docking stations, supporting infrared and serial port.

ADC102S021 2 Channel, 200 KSPS, 10-Bit A/D Converter

The ADC084S021 is a low-power, four-channel CMOS 8-bit analog-to-digital converter with a high-speed serial interface. The ADC084S021 is fully specified over a sample rate range of 50 kSPS to 200 kSPS. 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, MICROWIRE, and many common DSP serial interfaces. The ADC084S021 operates with a single supply, that can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 1.6 mW and 5.8 mW, respectively. The power-down feature reduces the power consumption to just 0.12 µW using a +3V supply, or 0.35 µW using a +5V supply. The ADC084S021 is packaged in a 10-lead MSOP package. Operation over the industrial temperature range of −40˚C to +85˚C is guaranteed.

The LM5070 power interface port and PWM controller provides a complete integrated solution for Powered Devices (PD) that connect into Power over Ethernet (PoE) systems. The LM5070 integrates an 80V, 400mA line connection switch and associated control for a fully IEEE 802.3af compliant interface with a full featured current mode pulse width modulator dc-dc converter. All power sequencing requirements between the controller interface and switch mode power supply (SMPS) are integrated into the IC. Two options are available providing either an 80% maximum duty cycle limit with slope compensation (on the –80 suffix) device or a 50% maximum duty cycle limit and no slope compensation on the (–50 suffix) device.

The LM1949 is a low-voltage driver integrated circuit produced by National Semiconductor. The integrated circuit contains a high-voltage driver that can directly drive high-voltage solenoids, such as automobile injector solenoids. The integrated circuit has a working voltage range of 3V-5.5V and a working temperature range of -55˚C to 125˚C. The LM1949 integrated circuit has the characteristic of high output current, which can reach 22mA, which can meet the requirements of automobile injector solenoid current.

USBN9603/USBN9604 Universal Serial Bus Full Speed Node Controller with Enhanced DMA Support is an integrated USB node controller produced by National Semiconductor Corporation.

LM3543 Triple Port USB Power Distribution Switch and Over-Current Protection

The LP3879 is a 800 mA fixed-output voltage regulator designed to provide high performance and low noise in applications requiring output voltages between 1.0V and 1.2V.

The ADC12D040 is a dual, low power monolithic CMOS analog-to-digital converter capable of converting analog in- put signals into 12-bit digital words at 40 Megasamples per second (MSPS), minimum. This converter uses a differential, pipeline architecture with digital error correction and an on- chip sample-and-hold circuit to minimize die size and power consumption while providing excellent dynamic perfor- mance. Operating on a single 5V power supply, the ADC12D040 achieves 10.9 effective bits at 10 MHz input and consumes just 600 mW at 40 MSPS, including the reference current. The Power Down feature reduces power consumption to 75 mW. The differential inputs provide a full scale differential input swing equal to 2VREF with the possibility of a single-ended input. Full use of the differential input is recommended for optimum performance. The digital outputs for the two ADCs are available on separate 12-bit buses with an output data format choice of offset binary or 2’s complement. For ease of interface, the digital output driver power pins of the ADC12D040 can be connected to a separate supply voltage in the range of 2.4V to the digital supply voltage, making the outputs compatible with low voltage systems. The ADC12D040’s speed, resolution and single supply op- eration make it well suited for a variety of applications. This device is available in the 64-lead TQFP package.

The LP2982 is a 50 mA, fixed-output voltage regulator designed to provide ultra low dropout and lower noise in battery powered applications. It delivers unequaled performance in all specifications critical to battery-powered designs.

The LP2989 is a fixed-output 500 mA precision LDO regulator designed for use with ceramic output capacitors. Output noise can be reduced to 18µV (typical) by connecting an external 10 nF capacitor to the bypass pin. Using an optimized VIP™ (Vertically Integrated PNP) process, the LP2989 delivers superior performance.

The LM2771 is a switched capacitor step-down regulator that produces a 1.5V output without the use of an inductor. It is capable of supplying loads up to 250mA. The LM2771 operates with an input voltage from 2.7V to 5.5V, and requires only 3 low-cost ceramic capacitors. The LM2771 uses a regulated 0.5x charge pump to give power conversion efficiencies nearly twice as high as an LDO. Pre-regulated 1.1MHz fixed-frequency switching results in very low ripple and noise on both the input and the output. When output currents are low (<30mA typ.), the part automatically switches to a low-ripple PFM regulation mode to maintain high efficiency over the entire load range. At input voltages below 3.5V (Typ), the charge pump goes into pass mode, with efficiencies similar to an LDO. The LM2771 is available in National’s 10-pad Leadless Leadframe No-Pullback Package (LLP-10).

The LM2575/LM2575/LM2575HV SIMPLE SWITCHER® 1A Step-Down Voltage Regulator is a high-efficiency, monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator. It is available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version, and can drive a 1A load with excellent line and load regulation.