Power ICs
NEC Introduces Ultra-Thin New MOSFET Devices in a SOT-23F Package
NEC Electronics Europe has introduced four MOSFET products: N0100P, N0301P, N0302P, and N0301N all housed in SOT-23F package which is an ideal choice for space- and power critical applications of all kinds. The new MOSFETs are available now.
OR’ing controller raises reliability of shared power systems
Diodes Incorporated has announced an active OR'ing controller chip enabling shared power system designers to replace heat-dissipating blocking diodes with high efficiency MOSFETs. As a result, in up-time critical telecom, server and mainframe applications, the ZXGD3102 will ensure cooler running, lower maintenance and higher reliability operation.
High Voltage Battery Stack Monitor from Linear Technology
Linear Technology has announced the LTC6802, a highly integrated multicell battery monitoring IC capable of measuring up to 12 individual battery cells. The device's proprietary design allows multiple LTC6802s to be stacked in series without optocouplers or isolators, for precision voltage monitoring of every cell in long strings of series-connected batteries.
Maxim's Chipset Eliminates Costly Current Transformers in Polyphase Energy Meters
Maxim has introduced a chipset, the MAXQ3108 and DS8102, that reduces the bill of materials (BOM) cost of a polyphase energy meter. Together, the MAXQ3108 and DS8102 replace three high-cost current transformers with three low-cost shunts to save both cost and space.
Integrated 2A MOSFET and Sense Resistor Provides Compact Hot Swap Solution
Linear Technology has introduced the LTC4217, a 2A integrated Hot Swap™ controller for protecting low power boards with load supply voltages ranging from 2.9V to 26.5V. Like other Hot Swap devices, the LTC4217 allows a board to be safely inserted and removed from a live backplane by limiting the amount of inrush current to the load supply during power up. Hot Swap controllers typically call for a number of supporting components.
Torex Integrates Synchronous Step-Down DC/DC with NMOS LDO
The new XCM519 multi-chip module from Torex Semiconductor integrates an XC9235/XC9236 synchronous step-down DC/DC converter with a high performance XC6601 NMOS LDO (low dropout) voltage regulator in a cost-effective, space saving package. The module meets the requirements of battery-driven applications such as mobile phones, PDAs, gaming devices and Bluetooth equipment, with the DC/DC converter providing a step-down from the battery, and this lower voltage feeding the NMOS LDO to provide a highly stable, low noise supply for the equipment's on-board processor's core.
Fully integrated current-limited load switch simplifies hot swap management
While designers of advanced portable systems with hot swap capabilities often need programmability to maximize protection, reverse blocking to control reverse current potentials and a fault flag to indicate over-current or over-temperature conditions, until now they could only add all three functions with a complex discrete approach. By integrating all three features into a single monolithic device, a power switch from AnalogicTech offers designers the highest level of protection available for hot swap in a simple, seamless solution that requires up to one-third less board space than discrete alternatives.
High performance LDOs in 0.4mm ultra low profile packaging
Torex Semiconductor's XC6415 Series independently-controlled, dual output and XC6221 Series single output LDO voltage regulators are now available in the newly-developed USPN packaging to achieve higher density mounting. The height of the packages is just 0.4mm, making them one of the world's lowest profile plastic mould package types with almost the same dimensions as Chip Scale Packages (CSPs). These extremely dense power devices are ideally suited for a range of battery-powered applications where small size and low power consumption are key design targets.
Fairchild's Primary Side Regulation PWM Controllers Reduce Space
Fairchild Semiconductor enables a simplified and highly efficient circuit design for battery chargers and power supplies with its series of primary-side regulation pulse width modulation controllers. These EZSWITCH primary-side-regulation controllers integrate a primary-side regulation PWM controller with a power MOSFET that can easily achieve tight constant voltage and constant current without complex secondary-side feedback circuitry.
Switch Mode USB Power Manager from Linear Technology
Linear Technology has announced the LTC3586, the latest and most highly integrated PMIC in a family of multi-function, compact power management solutions for Li-Ion/Polymer battery applications. The LTC3586 integrates a switching PowerPath manager, a stand-alone battery charger, always-on LDO, and 4 high efficiency synchronous switching regulators: 1 buck-boost, 1 boost, and 2 buck regulators, all in a compact, low-profile 4mm x 6mm QFN package.
20-V P-Channel TrenchFET Power MOSFET from Vishay
Vishay Intertechnology has unveiled the first device built on its new p-channel TrenchFET Gen III technology, a 20-V device with the lowest on-resistance ever achieved for a p-channel MOSFET with the footprint area of an SO-8.
50mA Linear Regulator from Linear Technology withstands 80V Input
Linear Technology has announced the LT3011, a high voltage micropower, low dropout regulator that delivers up to 50mA of continuous output current with a low dropout voltage of only 300mV at full load. The LT3011 features an input voltage range of 3V to 80V, delivering output voltages as low as 1.24V and up to 60V.
30mA Low Noise LDO Regulator From Torex
Available in the ultra-small USP-4 package (1.2mm x 1.6mm x 0.6mm), as well as in standard SOT-25 and SSOT-24 (SC-82) versions, the XC6225 Series of voltage regulators from Torex Semiconductor offer exceptionally low dropout voltage – typically 70mV with 30mA load. These high current, ultra-low dropout voltage regulators provide a highly stable, low noise supply that meets the demands of battery-driven circuits such as those found in mobile and cordless phones, digital and video cameras, PDAs and portable games, as well as portable AV equipment.
Fairchild's MicroFET MOSFETs Extend Battery Life
Fairchild Semiconductor's FDMA1024NZ and FDMA410NZ dual N-Channel and single N-Channel MOSFETs are said to extend battery life in applications such as cellular handsets, electric toothbrushes and shavers. Packaged in thermally enhanced 2mm x 2mm x 0.8mm MicroFET MLP packaging, ideal for space-constrained applications, they offer excellent power dissipation and ultra-low RDS(ON) to conserve battery life. These highly efficient MicroFET MOSFETs are instrumental in addressing the power challenges today's feature-rich portable applications.
Power Integrations Expands LinkSwitch-II Family
Power Integrations has expanded its popular LinkSwitch-II product family with the introduction of LNK632DG. Designed for applications with up to 3.1 W of output, the new device enables manufacturers to meet all worldwide energy-efficiency and no-load regulations for low-power chargers and adapters, such as ENERGY STAR EPS v2.0.
High Input Voltage Pre-Regulator with Output Current Limit for Battery Charger Applications
Linear Technology has announced the LT3653, a 1.2A, 1.5MHz monolithic current mode step-down switching regulator with a programmable output current limit. Typically, it is used with battery charger power path controllers to pre-regulate the output and optimize battery charger efficiency. Its wide operating input voltage of 7.5V to 30V makes the LT3653 ideal for a variety of input sources including unregulated 12V wall adapters, 24V industrial supplies and Firewire as well as automotive applications. Onboard input overvoltage lockout protects the device through input transients as high as 60V, such as those commonly found in automotive applications.
2A switching charger in compact 3x3mm package for feature rich mobile devices
AnalogicTech has introduced the AAT3620, said to be the industry's first fully integrated single-cell Lithium-ion battery charger capable of supplying up to 2A charge current in a small 3x3mm TDFN package. This innovative dual mode solution provides a high efficiency switching charger during Constant Current and Constant Voltage mode. To minimize EMI and RFI emission, the device switches to linear mode during CV mode where power dissipation is at a minimum.
ON Semiconductor's 6W LED Driver for Larger LCD Panel Backlighting
ON Semiconductor has introduced the CAT4106 - a new 6-watt (W) LED driver with an integrated, high-power DC-DC boost converter and on-chip diagnostics to maximize efficiency in larger, general purpose LCD panel backlighting applications.
NEC introduces higher-performance DPAK package for PowerMOSFETs in automotive applications
NEC Electronics Europe has announced an expansion of its product offering of low-voltage PowerMOSFETs for automotive applications. A new package variant of the popular DPAK package for PowerMOSFETs features electrical properties that previously were provided only by the larger D2PAK (TO-263) package.
NXP Claims First Integrated Dimmable Mains LED Driver IC
NXP Semiconductors has announced the launch of the SSL2101 - the world's first integrated dimmable mains LED driver. The NXP SSL2101 is a small form factor Switched Mode Power Supply (SMPS) controller IC specifically designed to drive LED devices and provide dimming capabilities to further improve the energy efficiency of LED lighting. The SSL2101 can drive lighting systems with variable power requirements which include LED retro-fit lamps, LED modules, LED spots, down-lights and LED strings for retail displays.
1A, Ultra Low Dropout Voltage Regulators From Torex
Available in the tiny USP-6C package (1.8 x 2.0 x 0.6mm), as well as in standard SOT-25 and SOT-89-5 versions, the XC6220 Series of voltage regulators from Torex Semiconductor offer exceptionally low dropout voltage – typically 20mV with a 100mA load. These high current, ultra-low dropout voltage regulators provide a highly stable, low noise supply that meets the demands of battery-driven circuits such as those found in disk drives, digital and video cameras and portable AV equipment.
National Semiconductor intoduces TRIAC Dimmable LED Driver
National Semiconductor has introduced a constant-current controller that enables off-line, uniform, flicker-free dimming of high-brightness light-emitting diodes (LEDs) with a conventional TRIode for Alternating Current (TRIAC) forward or reverse phase-control wall dimmer. The LM3445 TRIAC dimmable LED driver enables a full 100:1 range of dimming capability and can maintain greater than 1A of constant current to large strings of LEDs in a variety of residential, architectural, commercial and industrial applications.
TI hot-swap managers protect against current in-rush for voltages from 3 to 20 V
At the Applied Power Electronics Conference (APEC 2009), Texas Instruments introduced three new hot-swap managers that help protect against over currents for voltage rails between 3 V and 20 V and an operating current of up to 5A.
ON Semiconductor Introduces Integrated Power Factor Controller
ON Semiconductor has introduced the NCP1901, an integrated circuit that combines both a power factor correction (PFC) controller and a resonant half-bridge controller in a single package. The high level of integration of the NCP1901 permits off-line adapters to be designed with minimal form factor while meeting worldwide efficiency standards, such as ENERGY STAR v2.0 for external power supplies, California Energy Commission (CEC), European Code of Conduct and China Standard Certification Center (CSC).
STMicroelectronics’ MOSFET Technology Claims Industry’s Best On-Resistance per Area for Highest Efficiency and Power Density in 650V Rating
STMicroelectronics has announced a performance breakthrough for silicon power MOSFETs by achieving the best on-resistance per die area with its latest MDmesh V technology. MDmesh V will enable a new generation of 650V MOSFETs with RDS(ON) reaching below 0.079 Ohm in compact power packages to deliver industry-leading efficiency and power density. These devices target power-conversion systems where small size and low energy consumption are major goals for design engineers.
IR’s latest integrated voltage regulators deliver benchmark efficiency and reduce system size
International Rectifier has introduced its second generation (Gen2) of SupIRBuck integrated point-of-load (POL) voltage regulators for energy-efficient telecom, consumer, set-top box, high performance server, and storage applications.
NEC announces HSON-8 package for PowerMOSFETs in automotive applications
NEC Electronics Europe today announced the availability of a new package variant, HSON-8, for low-voltage PowerMOSFETs in automotive applications. The 6.0 mm x 5.2 mm x 1.45 mm HSON-8 package has the same footprint as an SOP-8 package. Compared with a DPAK (TO-252), this reduces mounting space by half, while maintaining the excellent thermal and electrical properties of DPAK packages.
4A Multi-Cell, Multi-Chemistry Battery Charger Controller from Linear Technology
Linear Technology has introduced the LTC4009, a fast-charge 4A capable, high efficiency switchmode battery charger controller for multiple battery chemistries which minimizes power dissipation without compromising board space. The LTC4009 supports Li-Ion/Polymer, NiMH, NiCd and sealed lead acid battery chemistries in multi-cell configurations.
Low-Cost, DC-DC Synchronous Controller from Maxim
Maxim has introduced the MAX15026, a low-cost, DC-DC synchronous step-down controller capable of driving external MOSFETs to deliver up to 25A of output current. This device operates over a wide, 4.5V to 28V input range, and it integrates a ±1% accurate voltage reference to provide an accurate output voltage from 0.6V to 85% of the input voltage.
Synchronous buck power supply provides fast transient response
Featuring integrated 10A power MOSFETs, a bootstrap switch, and a programmable LDO in a space saving MLPQ-5x5mm 32-pin package, the new SC417 stand-alone synchronous buck power supply from Solid State Supplies uses pseudo-fixed frequency adaptive on-time operation to provide fast transient response.
Wide Input Voltage Range Synchronous Step-Down DC/DC Controller from Linear Technology
Linear Technology has announced the LTC3851, a wide input range synchronous step-down switching regulator controller that drives all N-channel power MOSFET stages and has coincident or ratiometric tracking. The 4V to 38V input range encompasses a wide variety of applications, including most intermediate bus voltages and battery chemistries.
Dialog launches power management IC optimising efficiency of portable consumer devices
Dialog Semiconductor has introduced the DA9052, an advanced system power management integrated circuit (PMIC) that offers designers greater flexibility in reducing power consumption, size and cost in mobile phones and other portable multimedia devices.
LED driver provides 20% lower dropout voltage, extending battery life for low cost mobile products
AnalogicTech has introduced the AHK3292, a two-channel LED driver for LED indicators and LCD or keyboard backlighting in entry-level mobile products. Featuring low resistance current sinks capable of supporting a low dropout voltage, the LED driver reduces power dissipation and extends battery life. The device's dropout voltage of 36mV typical is at least 20% lower than competitive products.
18V Synchronous Step-Down Regulator from Linear Technology
The LTC3608 is a high efficiency, synchronous buck regulator that can deliver up to 8A of continuous output current at voltages as low as 0.6V. It operates from an input voltage range of 4V to 18V (20V ABS Max), making it ideal for applications with multicell Li-Ion, lead acid batteries or fixed voltage rails up to 15V.
LED driver IC offers high efficiency and fast switching
The A6210 from Allegro MicroSystems Europe is an LED driver IC based on a buck (stepdown) regulator circuit using constant 'on' time with valley current-mode control. This control scheme allows the use of very short switch 'on' times, making the new device ideal for applications requiring high switching frequencies combined with high input voltages and low output voltages.
NXP unveils suite of efficient power supply products
NXP Semiconductors has unveiled a suite of new power management solutions that will reduce power consumption in desktop PCs and laptops for the mass market. The highly efficient GreenChip PFC, GreenChip SR controllers and a portfolio of 30V power MOSFETs in LFPAK will be showcased at the Applied Power Electronics Conference (APEC) in Washington in February.
Torex Step-Up DC-DC Converter Is Ideal Backlight Driver Solution For Hand-Helds
New from Torex Semiconductor is the XC9133 Series, a fixed frequency, constant current, step-up DC-DC converter that is ideal for driving the white LEDs used in LCD backlighting applications in a wide range of hand-held designs, such as PDAs, mobile phones and digital cameras.
Synchronous DC-DC Controller from Maxim
Maxim introduced the MAX15023, a low-cost, dual-output, synchronous step-down controller capable of driving external MOSFETs to deliver at least 12A per output. Operating over a wide, 4.5V to 28V input range, this device integrates a ±1% accurate voltage reference to provide an accurate output voltage from 0.6V to 85% of the input voltage.
Integrated PoE-PD Controllers from ON Semiconductor Meet Upcoming IEEE PoE+ Standard
ON Semiconductor has announced that its NCP1081 and NCP1083 integrated Power-over-Ethernet Powered Device (PoE-PD) / DC-DC converter controllers have been verified to meet the upcoming IEEE802.3at standard for high power communications applications. Both devices have not only passed the IEEE 802.3af standard tests but have also been verified by the University of New Hampshire Interoperability Laboratory (UNH-IOL) for the recent draft IEEE 802.3at (D3.1) standard - which includes a test of the two event physical layer classification.
Power management chips increase efficiency, voltage and output current in LED designs
Texas Instruments has introduced a high-power DC/DC boost LED driver (TPS61500) and high-voltage DC/DC boost converter (TPS61175), and expanded its step-down DC/DC converter series with TPS62110.
