Cap-free, linear regulators provide low dropout and low noise
9 May 2001
Power Electronics / Power Management
The Burr-Brown REG10x family of cap-free, low-noise, ultra-low dropout linear regulators (LDOs) from Texas Instruments offers 100 mA to 1 A output without the requirement of capacitors or external supplies.
The new DMOS topology provides significant improvement over previous designs and allows the REG101/102/103/104/113 LDOs to provide the lowest dropout rate in their class, according to the manufacturer.
Unlike conventional LDOs that are difficult to compensate and require expensive low ESR capacitors greater than 1 µF, none of the REG10x LDOs require an output capacitor for stability.
Typical ground pin current is only 1 mA at IOUT = 500 mA and drops to 0,5 µA in 'not enabled' mode. The REG10x family also is unlike regulators with bipolar pass devices. Quiescent current remains relatively constant over load variations and under dropout conditions.
These LDOs have very low noise output between 28 and 35 µVRMS for VOUT = 3,3 V with CNR = 0,01 µF (typ), making them ideally suited for noise-sensitive applications such as telecom, datacom and wireless. Specific applications include portable communication devices, battery-powered equipment, modems, personal digital assistants, bar-code scanners and back-up power supplies.
On-chip trimming results in high output voltage accuracy. Accuracy is maintained over temperature, line and load variations.
The REG10x family is available in SOT-23-5, SOT-223-5, DDPAK-5 and SO-8 small surface-mount packages.
Avnet Kopp
(011) 444 2333
[email protected]
www.avnet.co.za
Further reading:
Reliable power solution
Conical Technologies
Power Electronics / Power Management
The Mibbo MLD-120W-xxVx is a robust DIN-rail mounted DC-DC converter with a 120 W output capacity specifically designed for industrial and automation applications.
Read more...
Easing the path for IPPs navigating local energy regulations
Power Electronics / Power Management
Independent Power Producers (IPPs) and developers venturing into South Africa’s renewable energy sector face an onerous and challenging regulatory landscape characterised by uncertainty in securing grid connections and considerable development costs.
Read more...
Wide input voltage buck-boost converter
Altron Arrow
Power Electronics / Power Management
The MAX77859 from Analog Devices is a high-efficiency, high-performance buck-boost converter targeted for systems requiring a wide input voltage range of between 2,5 and 22 V.
Read more...
High-density power module for AI at the edge applications
Altron Arrow
Power Electronics / Power Management
The MCPF1412 power module from Microchip has integrated I2C and PMBus interfaces for flexible configuration and monitoring.
Read more...
Development kit for TI’s SN6507
Power Electronics / Power Management
This comprehensive solution is designed to help engineers evaluate the performance of TI’s SN6507 transformer driver for isolated power supplies.
Read more...
High-voltage IGBT
Hi-Q Electronics
Power Electronics / Power Management
Diotec Semiconductor has launched the DIW030M060 IGBT, a 600 V, 30 A device with a built-in reverse diode.
Read more...
DC converter for Hi-Rel applications
Vepac Electronics
Power Electronics / Power Management
The MFK2812S from Crane Aerospace & Electronics is a DC-DC converter with an input voltage range of 16 to 50 V and an output of 12 V at up to 2,08 A.
Read more...
Distributed Energy Resource Management Systems
Schneider Electric South Africa
Power Electronics / Power Management
In addition to grid stability, DERMS also play a role in energy trading with some countries leveraging DERMS for real-time energy trading.
Read more...
BYD introduces new energy storage solutions
Power Electronics / Power Management
BYD Energy Storage, a business division of BYD, has introduced the new BYD Battery-Box LV5.0+ at the recent Solar & Storage Live Africa in Johannesburg.
Read more...
Micro energy harvesting
Power Electronics / Power Management
Panasonic Industry and Miromico partner to show effective micro energy harvesting for industrial applications.
Read more...
printer friendly version