National Products from Texas Instruments LM21305 5A Adjustable Frequency Synchronous Buck Regulators
National Products from Texas Instruments LM21305 5A Adjustable Frequency Synchronous Buck Regulators are optimized for solution size, flexibility, and high conversion efficiency. High power density LM21305 designs are achieved via monolithic integration of the high-side and low-side power MOSFETs, high switching frequency, current mode control, and optimized thermal design. The efficiency of National LM21305 buck regulators is elevated at light loads with diode emulation mode operation and at heavy loads by optimal design of the MOSFET gate drivers to minimize switch dead-times and body-diode conduction losses. National LM21305 synchronous buck regulators accept a wide input voltage range of 3V to 18V, facilitating interface to all intermediate bus voltages, including 3.3V, 5V, and 12V rails. An output voltage as low as 0.598V is supported with excellent setpoint accuracy and low ripple and RMS noise.
National Products from Texas Instruments LMR62014 SIMPLE SWITCHER® Step-Up Voltage Regulators
National Products from Texas Instruments LMR62014 SIMPLE SWITCHER® 20VOUT, 1.4A Step-Up Voltage Regulators are current-mode boost converters operating at fixed frequency of 1.6MHz. National LMR62014 step-up voltage regulators feature the industry's highest power density and are capable of 90% duty cycle, making it ideal for boosting to voltages up to 20V. These National SIMPLE SWITCHER voltage regulators have a logic-level shutdown pin that can be used to reduce quiescent current and extend battery life. Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies design and reduces component count. LMR62014 devices are ideal for use in a variety of applications, including boost conversions from 3.3V, 5V, and 12V rails as well as LCD displays and LED applications.
National Products from Texas Instruments LMR24210 / LMR24220 SIMPLE SWITCHER® Step-Down Voltage Regulators
National Products from Texas Instruments LMR24210 and LMR24220 SIMPLE SWITCHER® 42Vin step-down voltage regulators in micro SMD packaging feature all the required functions to implement a highly efficient and cost-effective buck regulator. These National SIMPLE SWITCHER step-down voltage regulators offer output currents up to 1.0A (LMR24210) or 2.0A (LMR24220) and up to 1MHz switching frequency. These National step-down voltage regulators provide programmable soft start and COT architecture with ERM for reduced component count and ultra-fast transient response. The LRM24210 and LMR24220 are ideal for point-of-load conversions from 5V, 12V, and 24V rails, space-constrained applications, industrial distributed power applications, and power meters.
National Products from Texas Instruments LMZ10500 / LMZ10501 SIMPLE SWITCHER® Nano Modules
National Products from Texas Instruments LMZ10500 and LMZ10501 SIMPLE SWITCHER® Nano Modules with 5.5V maximum input voltage are easy-to-use step-down DC-DC solutions capable of 650mA (LMZ10500) or 1A (LMZ10501) load in space-constrained applications. These highly efficient National SIMPLE SWITCHER Nano Modules feature adjustable output voltage and 2.0MHz fixed PWM switching frequency. The LMZ10500 and LMZ10501 require only an input capacitor, output capacitor, a small VCON filter capacitor, and two resistors for basic operation. These National nano modules come in 8-pin LLP footprint package with an integrated inductor. Internal current limit based softstart function, current overload protection, and thermal shutdown are also provided. LMZ10500 and LMZ10501 devices are designed for use in a variety of applications, including point of load conversions from 3.3V and 5V rails, space-constrained applications, and low output noise applications.
National Semiconductor LM257x SIMPLE SWITCHER® Step-Down Voltage Regulators
National Semiconductor LM257x SIMPLE SWITCHER® Step-Down Voltage Regulators are high efficiency devices ranging from 0.5A to 3A output current. National Semiconductor LM2574 and LM2574HV SIMPLE SWITCHER Step-Down Voltage Regulators provide all the active functions for a step-down (buck) switching regulator capable of driving a 0.5A load with excellent line and load regulation. LM2575 and LM2575HV Step-Down Voltage Regulators provide all the active functions for a step-down (buck) switching regulator capable of driving a 1A load with excellent line and load regulation. LM2576 and LM2576HV Step-Down Voltage Regulators provide all the active functions for a step-down (buck) switching regulator capable of driving 3A load with excellent line and load regulation. LM2577 SIMPLE SWITCHER 3A Step-Up Voltage Regulators provide all the power and control functions for step-up (boost), flyback, and forward converter switching regulators. National Semiconductor LM257x devices are a high-efficiency replacement for popular three-terminal linear regulators.
National Semiconductor PHYTER® 10/100 Ethernet Physical Layer Transceiver
National Semiconductor PHYTER® 10/100 Ethernet Physical Layer Transceivers
are 10/100 single port physical layer devices offering low power
consumption with several intelligent power down states. Designed to
support multiple power modes using low-power 3.3V, 0.18μm
CMOS technology, the
PHYTER 10/100 Ethernet Physical Layer Transceivers have a typical
low power consumption rating of < 270mW. The integrated sub-layers support both 10BASE-T and 100BASE-TX
Ethernet
protocols to enable compatibility and interoperability with all other standards-based
Ethernet
solutions.The PHYTER® 10/100 Ethernet Physical Layer Transceivers
interface to twisted pair media via an external transformer. With the industry's highest
electrostatic discharge
(ESD)
protection
of 4000V, error-free operation up to 150 meters, space saving 48-pin LQFP package (7mm) x (7mm), and
IEEE 802.3
specification compliance, the
PHYTER® 10/100 Ethernet Physical Layer Transceivers
are ideally suited for high end peripheral devices, industrial controls
and factory automation, automotive and transportation, and general embedded applications.
National Semiconductor LMP7701/LMP7702 Precision Rail-to-Rail Amplifiers
National Semiconductor's LMP7701/LMP7702 Precision Rail-to-Rail Amplifiers, part of the LMP® product family, are single and dual low offset voltage, rail-to-rail input and output precision amplifiers that feature a CMOS input stage and wide supply voltage range. The VIP50 technology built into National's LMP7701/LMP7702 precision amplifiers allows the combination of a CMOS input stage and 12V common mode and supply voltage range, making these amplifiers ideal for applications where conventional CMOS parts could not operate under this and other desired voltage conditions. The rail-to-rail input stage integrated into the LMP7701/LMP7702 significantly reduces the CMRR glitch usually associated with rail-to-rail amplifiers.
National Semiconductor Simple Switcher® LMZ1420x Power Modules
National Semiconductor Simple Switcher® LMZ1420x Power Modules are easy-to-use, step-down DC-DC solutions capable of driving up to 1A, 2A, or 3A loads with exceptional power conversion efficiency, line and load regulation, and output accuracy. National Semiconductor Simple Switcher® Power Modules are available in an innovative package that enhances thermal performance and allows for hand or machine soldering. These power modules can accept an input voltage rail between 6V and 42V and deliver an adjustable and highly accurate output voltage. Each module only requires three external resistors and four external capacitors to complete the power solution. They have a reliable and robust design with the following protection features: thermal shutdown, input under-voltage lockout, output over-voltage protection, short-circuit protection, output current limit, and start-up into a pre-biased output. A single resistor adjusts the switching frequency up to 1 MHz.
National Semiconductor LM4040 Precision Micropower Shunt Voltage Reference
National Semiconductor's LM4040 Precision Micropower Shunt Voltage Reference is ideal for space critical applications via the sub-miniature SC70 and SOT-23 surface-mount packages. The easy-to-use LM4040's advanced design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load. In addition, the LM4040 is available in several fixed reverse breakdown voltages: 2.048V, 2.500V, 3.000V, 4.096V, 5.000V, 8.192V, and 10.000V. The minimum operating current increases from 60 µA for the LM4040-2.5 to 100 µA for the LM4040-10.0, with all versions featuring a maximum operating current of 15 mA. The LM4040 utilizes fuse and zener-zap reverse breakdown voltage trim during wafer sort to ensure that the prime parts have an accuracy of better than ±0.1% (A grade) at 25°C. Bandgap reference temperature drift curvature correction and low dynamic impedance ensure stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents. These National SemiconductorLM4040 Precision Micropower Shunt Voltage Reference is ideal for portable, battery-powered equipment, data acquisition systems, instrumentation, process control, energy management, product testing, automotive, and precision audio components.
National Semiconductor LM1117 800 mA Low-Dropout Linear Regulators
LM1117 from National Semiconductor is a series of Low-Dropout Linear Regulators with a dropout of 1.2V at 800mA of load current. Five fixed voltages are available: 1.8V, 2.5V, 2.85V, 3.3V, and 5V. There is also an adjustable version with settings from 1.25V to 13.8V. The LM1117 Series from National Semiconductor features current limiting and thermal shutdown. A zener trimmed bandgap reference is included to assure ±1% output voltage accuracy.