National Semiconductor manuals, page 41
NATIONAL SEMICONDUCTOR - LP5951 Micropower 150mA Low-Dropout CMOS Voltage handbook
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.
NATIONAL SEMICONDUCTOR LMC7221 Manual
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.
NATIONAL SEMICONDUCTOR LM2588 SIMPLE SWITCHER 5A Flyback Regulator with Shutdown Manual
The LM2588 SIMPLE SWITCHER® 5A Flyback Regulator with Shutdown is a power module produced by Microchip Technology Inc. It has a current output of 5A and can be used for step-down, step-up, and forward conversion applications. The module has a simple external circuit, low cost, and easy to use.
NATIONAL SEMICONDUCTOR LM5021 Manual
The LM5021 is an off-line pulse width modulation (PWM) controller that contains all of the features needed to implement highly efficient off-line single-ended flyback and forward power converters using current-mode control. The LM5021 features include an ultra-low (25 µA) start-up current, which minimizes power losses in the high voltage start-up network. A skip cycle mode reduces power consumption with light loads for energy conserving applications (ENERGY STAR®, CECP, etc.). Additional features include under-voltage lock-out, cycle-by-cycle current limit, hiccup mode overload protection, slope compensation, soft-start and oscillator synchronization capability.
NATIONAL SEMICONDUCTOR LP3992 Manual
The LP3992 regulator is a micropower 1.5V CMOS voltage regulator with shutdown control. It is designed for portable, battery-powered systems and provides an accurate output voltage, low noise, and low quiescent current. The LP3992 can prolong battery life by providing a 1.5V output from a low input voltage of 1.9V. It also features short-circuit and thermal-shutdown protection. The device is stable with small ceramic capacitors and is available in an SOT23-5 package.
NATIONAL SEMICONDUCTOR LP2981 Manual(1)
The LP2981 is a 100 mA, fixed-output voltage regulator designed specifically to meet the requirements of battery-powered applications. Using an optimized VIP™ (Vertically Integrated PNP) pro- cess, the LP2981 delivers unequaled 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 avail- able (A grade). Eleven voltage options, from 2.5V to 5.0V, are available as standard products.
NATIONAL SEMICONDUCTOR DP83848C Manual
The DP83848C PHYTER® is a single-port 10/100 Mb/s Ethernet Physical Layer Transceiver with low power consumption and several intelligent power down states. It is suitable for a variety of applications, including high-end peripheral devices, industrial controls and factory automation.
NATIONAL SEMICONDUCTOR PC16552D Manual
The PC16552D is a dual version of the PC16550D Universal Asynchronous Receiver-Transmitter (UART). The two serial channels are completely independent except for a common CPU interface and crystal input. On power-up, both channels are initially identical to the 16450. Each channel can operate with on-chip transmitter and receiver FIFOs (FIFO mode) to relieve the CPU of excessive software overhead. In FIFO mode, each channel can buffer 16 bytes (plus 3 bits of error data per byte in the RCVR FIFO) of data in both the transmitter and receiver. All the FIFO control logic is on-chip to minimize system overhead and maximize system efficiency. Signalling for DMA transfers is done through two pins per channel (TXRDY and RXRDY). The RXRDY function is multiplexed on one pin with the OUT 2 and BAUDOUT functions. The CPU can select these functions through a new register (Alternate Function Register). Each channel performs serial-to-parallel conversion on data characters received from a peripheral device or a MODEM, and parallel-to-serial conversion on data characters received from the CPU. The CPU can read the complete status of each channel at any time. Status information reported includes the type and condition of the transfer operations being performed by the DUART, as well as any errors.
NATIONAL SEMICONDUCTOR LM3200 Manual
The LM3200 is a miniature, adjustable, step-down DC-DC converter with bypass mode for RF power amplifiers
National Semiconductor DP83847 Manual(1)
The DP83847 is a PHY chip from National Semiconductor Corporation that supports the 10BASE-T and 100BASE-TX Ethernet protocols. The chip uses a low-power 3.3V, 0.18µm CMOS process, consumes only 351mW (typical), and supports a 5V/3.3V MAC interface.
NATIONAL SEMICONDUCTOR -LM2595 SIMPLE SWITCHER Power Converter 150 kHz handbook
NATIONAL SEMICONDUCTOR LMD18201 Manual
The LMD18201 is a 3A H-Bridge designed for motion control applications. It is built using a multi-technology process which combines bipolar and CMOS control circuitry with DMOS power devices on the same monolithic structure. The H-Bridge configuration is ideal for driving DC and step-per motors. The LMD18201 accommodates peak output currents up to 6A. Current sensing can be achieved via a small sense resistor connected in series with the power ground lead. For current sensing without disturbing the path of current to the load, the LMD18200 is recommended.
NATIONAL SEMICONDUCTOR DP83848I Guide
The DP83848I PHYTER is an industrial temperature single port 10/100 Mb/s Ethernet physical layer transceiver with features such as low power consumption, intelligent power down states, and optimized cable length performance.
NATIONAL SEMICONDUCTOR LM2672 Manual(1)
The LM2672 series of regulators are monolithic integrated circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load current with excellent line and load regulation. These devices are avail- able in fixed output voltages of 3.3V, 5.0V, 12V, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include patented internal frequency compensation (Patent Nos. 5,382,918 and 5,514,947), fixed frequency oscillator, external shutdown, soft-start, and frequency synchronization. The LM2672 series operates at a switching frequency of 260 kHz, thus allowing smaller sized filter components than what would be needed with lower frequency switching regu- lators. Because of its very high efficiency (>90%), the cop- per traces on the printed circuit board are the only heat sinking needed. A family of standard inductors for use with the LM2672 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs. Also included in the datasheet are selector guides for diodes and capacitors designed to work in switch-mode power supplies. Other features include a guaranteed ±1.5% tolerance on output voltage within specified input vo
NATIONAL SEMICONDUCTOR - USBN9603/USBN9604 Universal Serial Bus Full Speed Node Controller with Enhanced DMA Support handbook
The USBN9603/4 are integrated USB Node controllers with enhanced DMA support. They are compatible with USB specification versions 1.0 and 1.1, and are advanced versions of the USBN9602. The devices integrate the required USB transceiver, a 3.3V regulator, a Serial Interface Engine (SIE), USB endpoint (EP) FIFOs, a versatile 8-bit parallel interface, a clock generator, and a MICROWIRE/PLUS™ interface. Seven endpoint pipes are supported: one for the mandatory control endpoint and six to support interrupt, bulk, and isochronous endpoints. Each endpoint pipe has a dedicated FIFO, 8 bytes for the control endpoint and 64 bytes for the other endpoints. The 8-bit parallel interface supports multiplexed and non-multiplexed style CPU address/data buses. A programmable interrupt output scheme allows device configuration for different interrupt signaling requirements.