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ADI introduced a highly integrated power management IC ADP5034 Regulator / LDO
ADI has recently introduced a highly integrated power management ICADP5034 Regulator / LDO, it is a small LFCSP (lead frame chip scale) package integrates two highly efficient 1.2A 3MHz buck regulator and two 300mALDO (low dropout ) regulator. Also introduced the ADP5024 and ADP5034 regulator similar / LDO, but it only contains a 300mALDO regulator. ADP5034 and ADP5024 buck regulator / LDO with a total of only 69mm2 of board space, designed to meet the processor and FPGA shrinking board space requirements and increasing performance requirements.
The integrated buck regulator to 180 ° out of phase, the input filter requirements are reduced, not only allows the use of smaller input capacitance, and can reduce the input noise. Dedicated mode pin can be placed in the two regulators forced PWM mode or automatic PWM / PSM mode in order to improve efficiency. ADP5034 and ADP5024 has a low quiescent current, low dropout voltage and wide input voltage range of features, so power management more efficient. Integrated LDO in the 1kHz to 10kHz range PSRR (power supply rejection ratio) performance of up to 65dB, the output noise as low as 80μV/rms, suitable for the sensitive analog circuitry.
ADP5034 and ADP5024 buck regulator / LDO is flexible and highly integrated power management devices, and its application including the USB-powered portable devices, handheld medical products as well as for the processor, ASIC, FPGA, RF chipset for multi-voltage power supply applications. In these devices, the step-down regulator and LDO have a dedicated enable pin, and all four outputs support the regulator output voltage adjustable, the use of an external resistor divider network can easily set the output voltage. Designers can quickly and easily adjust the ADP5034 and ADP5024 output voltage to suit different requirements, thus shortening the design time and accelerate time to market. ADP5034 and ADP5024 rated junction temperature range of -40 ° C to 125 ° C, the ice are a 24-pin 4mm × 4mmLFCSP package.
ADP5034 and ADP5024 buck regulator / LDO key features and benefits
Two high efficiency 1.2A buck regulator offers adjustable or fixed output voltage for the system used to provide processor core voltage and I / O voltage.
Two 300mALDO (ADP5034) to provide adjustable or fixed output voltage options for low-noise analog circuits.
The initial accuracy of the regulator ± 1%, suitable for low-noise analog circuits, and to support high reliability and strict line, load, temperature, voltage regulation of the processor and FPGA supplies the load.
Buck regulator up to 96% peak efficiency, can improve system power efficiency and reduce heat.
Output voltage can be programmed at the factory or in the external adjustment to provide maximum design flexibility.
Release FAN5358 Fairchild buck regulator fixed output
Designers often need to portable devices, especially smart phones, data cards and tablet computers, integrated over the range PMIC processing functionality, such as additional I / O rails or processors. These I / O rails and / or processor needs to run a stand-alone device to power. Fairchild Semiconductor (FairchildSemiconductor) for this design challenge, develop FAN53582MHz, 500mA synchronous buck regulator.
FAN5358 buck regulator operates from 2.7V to 5.5V input voltage range to provide a fixed output voltage. The device uses a proprietary synchronous rectifier structure, can provide 500mA of current, and as low as 1mA load current by more than 80% of high efficiency.
In the medium and light load conditions, FAN5358 uses pulse frequency modulation to the device in power saving mode, to achieve a very low quiescent current (typical 25μA). Even so, low quiescent current, the device can swing significantly when the load to provide excellent transient response. In addition, the shutdown mode, supply current to 1μA, further reducing power consumption.
FAN5358 uses a cost-effective 6-pin SC70 package, which is easy to use, to simplify the manufacturing process. The device is ideal for mobile phones, smartphones, 3G/4G data cards and tablet PCs, ultra mobile PC and the Internet and other devices in the application.
Fairchild FAN5358 is designed to meet the portable power supply (including core power, peripherals, power supply, battery charging, RFPA power and lighting solutions) needs a wide range of products designed in a series. Fairchild through the use of advanced silicon chip and package options for the smaller size and engineers to provide high performance solutions that will improve their design innovation.