The MIC5205 is an efficient linear voltage regulator with ultra low-noise output, very low dropout voltage (tically 17mV at light loads and 165mV at 150mA), and very low ground current (600?A at 100mA output). The MIC5205 offers better than 1% initial accuracy.
Designed especially for hand-held, battery-powered devices, the MIC5205 includes a CMOS or TTL compatible enable/shutdown control input. When shut down, power consumption drops nearly to zero. Regulator ground current increases only slightly in dropout, further prolonging battery life.
Key MIC5205 features include a reference b pin to improve its already excellent low-noise performance, reversed-battery protection, current limiting, and overtemperature shutdown.
The MIC5205 is ailable in fixed and adjustable output voltage versions in a all SOT-23-5 package.
For low-dropout regulators that are stable with ceramic output capacitors, see the μCap MIC5245/6/7 family.
Data sheets and support documentation can be found on Micrel’s web site atwww.micrel.com.
Features
• Ultra-low-noise output
• High output voltage accuracy
• Guaranteed 150mA output
• Low quiescent current
• Low dropout voltage
• Extremely tight load and line regulation
• Very low temperature coefficient
• Current and thermal limiting
• Reverse-battery protection
• “Zero” off-mode current
• Logic-controlled electronic enable
Applications
• Cellular telephones
• Lap, notebook, and palm computers
• Battery-powered equipment
• PCMCIA VCC and VPP regulation/switching
• Consumer/personal electronics
• PS post-regulator/dc-to-dc modules
• High-efficiency linear power supplies
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