Power
Micrel Launches IC Family That Reduces Switching Regulator Output Ripple And Harmonics By 60db At High Frequencies
Micrel Inc. today announced the Ripple Blocker family comprising the MIC94300 voltage follower output and the MIC94310 fixed output, low-dropout (LDO) IC. The ground-breaking new MIC94300 /MIC94310 were developed to provide more efficient noise suppression for today's highly sensitive data and image capturing systems.
The As consumers continue to demand higher performance from the products they purchase, engineers face more stringent design requirements to develop products with higher image capturing quality, higher signal receiving strength (in smart-phones), and no dropped calls, noted Brian Hedayati, marketing vice president for the analog division at Micrel. Micrel's new MIC943XX series gives engineers a significant advantage over current discrete solutions, especially in applications where sufficient ripple suppression is crucial and improving the minimum detectable signal in data processing systems is paramount to the design.
Micrel's new Ripple Blocker technology improves minimum detectable signal capturing for low-light image sensors by suppressing system power ripple for the Image System Processor (ISP). By eliminating the large LC filter that would typically be required to reduce ripple in a discrete solution, the MIC943XX series devices provide more usable board space to accommodate space-constrained designs. In addition, this new series offers an operating input range of 1.8V to 3.6V with exceptional transient performance, ultra-low dropout and very high PSRR (80db @ 1KHz).
The MIC94300 and the MIC94310 devices deliver up to 200mA; higher-current devices are under development. Both ICs offer full current and thermal fault condition protection and the MIC94310 offers ultra-low dropout (17mV, typical). The devices also feature a -40ºC to 125ºC junction temperature range. Package options include 0.88mm x 0.88mm, 4-bump CSP and 1.2mm x 1.6mm Thin-MLF®.