MIC5308-1.8YMT-TR Microchip

MIC5308 Low V /V 150mA High PSRR IN OUT ULDO with Ultra-Low IQ General Description Features The MIC5308 is a high performance, Cap low dropout Input voltage range: 1.6V to 5.5V regulator, offering ultra-low operating current while Guaranteed 150mA over temperature maintaining very fast transient response. The MIC5308 Ultra Low dropout voltage of 45mV at 150mA can source up to 150mA of output current and can High PSRR, up to 90dB 1kHz regulate down from a low input supply voltage to increase system efficiency. Output Voltage range: 0.8V to 2.0V Ideal for battery operated applications the MIC5308 offers Very low ground current 23A under full load extremely low dropout voltage 45mV typically 150mA, Bias supply voltage range: 2.5V to 5.5V and low ground current at all load conditions (typically Stable with 1F ceramic output capacitor 23A). The MIC5308 can also be put into a zero-off-mode 150mA maximum output current at 1.6V input voltage current state, drawing virtually no current when disabled. Very fast transient response ideal for digital loads The MIC5308 is available in fixed output voltages in the Thermal shutdown and current limit protection tiny 6-pin 1.6mm x 1.6mm thin MLF leadless package as well as the 6-pin TSOT-23 for cost sensitive applications. Tiny 6-pin 1.6mm x 1.6mm Thin MLF package Data sheets and support documentation can be found on Cost effective 6-pin TSOT-23 package Micrels web site at: www.micrel.com. Applications Mobile Phones PDAs GPS Receivers Portable Electronics Typical Application MIC5308 BIAS 1.2V / 150mA VOUT VIN MIC23050 Li-Ion DC-to-DC 2.7V to 4.2V EN C C Converter BIAS IN 1F 1F BYP GND C C BYP OUT 10nF 1F ULDO is a trademark of Micrel, Inc. MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC5308 Ordering Information Part Number Voltage Marking Codes Temperature Range Package MIC5308-1.2YMT 1.2V 1R2 40 to +125C 6-Pin 1.6mm x 1.6mm Thin MLF MIC5308-1.5YMT 1.5V 1R5 40 to +125C 6-Pin 1.6mm x 1.6mm Thin MLF MIC5308-1.8YMT 1.8V 1R8 40 to +125C 6-Pin 1.6mm x 1.6mm Thin MLF MIC5308YMT Adj. ARA 40 to +125C 6-Pin 1.6mm x 1.6mm Thin MLF MIC5308-1.2YD6 1.2V QR12 40 to +125C 6-Pin TSOT-23 MIC5308-1.5YD6 1.5V QR15 40 to +125C 6-Pin TSOT-23 MIC5308-1.8YD6 1.8V QR18 40 to +125C 6-Pin TSOT-23 MIC5308YD6 Adj. QRAA 40 to +125C 6-Pin TSOT-23 Notes For other voltage options. Contact Micrel Marketing for details. Pin 1 identifier = . MLF is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. Pin Configuration GND BIAS VIN 3 2 1 BIAS 1 6 BYP/ADJ GND 2 5 EN VIN 3 4 VOUT 45 6 BYP/ADJ EN VOUT 6-Pin 1.6mm x 1.6mm Thin MLF (MT) 6-Pin TSOT-23 (D6) Pin Description Pin Number Pin Number Pin Name Pin Function Thin MLF-6 TSOT-23-6 3 1 VIN Power Input for LDO. 2 2 GND Ground 1 3 BIAS Bias Input Voltage. BYP Bypass: Connect a capacitor to ground to reduce noise and reduce ripple rejection. 6 4 ADJ Adjustable: Feedback input from external resistor divider. 5 5 EN Enable Input: Active High Input. Logic High = On Logic Low = Off Do not leave floating. 4 6 VOUT Output of regulator. HS Pad EPAD Exposed heatsink pad connected to ground internally. M9999-051508-D May 2008 2