New Industry Products

ON Semi Intros MC33283 Integrated Multi-Output Voltage Regulator

August 08, 1999 by Jeff Shepard

On Semiconductor LLC (Phoenix, AZ) introduced the MC33283, a highly integrated multi-output, ultra-low noise, low dropout voltage regulator that is housed in a 32-pin miniature package. The new regulator is a comprehensive power management solution designed specifically for applications such as TDMA and GSM phones where the transmitter is continuously switched on and off. The device can also be used in other wireless cellular phones, PDAs, telephone handsets and two-way radios. The MC33283 offers up to seven LDO regulators and a regulated step-up charge pump converter in one package. All of the internal regulators supply voltage to all elements of the end product and can be independently switched on and off. According to ON Semi, having up to seven independent regulators in one package allows extra components to be eliminated in designs requiring more than one regulator, enabling the voltage distribution of the entire product to be managed within one device. The device offers overall noise characteristics of only 40uV RMS at nominal output current levels from 10kHz to 100kHz. The regulator is also equipped with a power on reset feature and an undervoltage lockout protection feature, and supplies voltage to the baseband processor and other logic, analog and RF devices that make up the final system. An onboard internal charge pump can supply the flash memory or a Subscriber Identification Module (SIM) card. Housed in a miniature TQFP-32 pin package, the MC33283 is priced at $1.60 each in quantities of 10,000.