Product category:
Power Supply ICs and Controllers
News Release from: Micrel | Subject: MIC5308
Edited by the Electronicstalk Editorial
Team on 11 December 2007
LDO goes even lower for handheld
efficiency
Ultralow dropout and low input voltage feature combination allows high efficiency power conversion from low voltage supply rails commonly used in handhelds.
Micrel has launched a tiny high-performance high-PSRR ultra-low-dropout (ULDO) linear regulator family with input voltage down to 1.6V for high efficiency portable devices such as mobile phones, PDAs, portable media players (PMP), GPS and other portable device applications The MIC5308 is currently available in volume with pricing starting at US $0.49 for 1000-unit quantities
This article was originally published on Electronicstalk on 5 Dec 2000 at 8.00am (UK)
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The MIC5309 is also currently available in volume at US $0.53 in 1000-unit quantities.
"Low input voltage and ultra-low dropout both equate to extended battery life in portable systems by allowing designers to select a low voltage secondary rail as the supply source".
"This, in turn, reduces the voltage drop from input-to-output which increases efficiency", says Andy Cowell, Micrel's Vice President of Marketing.
"Micrel's MIC5308/09 gives portable product designers a new method for generating a low noise secondary voltage while still maintaining high efficiency".
The MIC5308/09 family offers ultralow dropout voltages of only 45mV at 150mA while delivering up to 300mA of output current.
The ultralow dropout and low input voltage feature combination allows high efficiency power conversion from low voltage supply rails commonly used in handhelds such as 1.8V.
The MIC5308/09 family also offers more than 90dB power supply rejection ratio (PSRR), and exceptional transient performance while using a small tiny and inexpensive 1uF ceramic output capacitor.
In addition, this series features micropower operation requiring only 23uA of quiescent current and less than 2uA in shutdown enabling longer battery life in all operating modes.
The MIC5308/09 family comes in two package options; an ultrathin 0.6mm, 1.6 x 1.6mm 6-pin MLF package for space-constrained applications and the TSOT-23 package for more cost sensitive designs.
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