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MIC5309YD6

Description
Low VIN/VOUT 300mA High PSRR ULDO with Ultra-Low IQ
File Size347KB,11 Pages
ManufacturerMicrel ( Microchip )
Websitehttps://www.microchip.com
Download Datasheet View All

MIC5309YD6 Overview

Low VIN/VOUT 300mA High PSRR ULDO with Ultra-Low IQ

MIC5309
Low V
IN
/V
OUT
300mA High PSRR
ULDO™ with Ultra-Low IQ
General Description
The MIC5309 is a high performance, µCap low dropout
regulator, offering ultra-low operating current while
maintaining very fast transient response. The MIC5309
can source up to 300mA of output current and can
regulate down from a low input supply voltage to increase
system efficiency.
Ideal for battery operated applications; the MIC5309 offers
extremely low dropout voltage 100mV typically @ 300mA
load, and low ground current at all load conditions
(typically 23µA). The MIC5309 can also be put into a zero-
off-mode current state, drawing virtually no current when
disabled.
The MIC5309 is available in fixed output voltages in the
tiny 6-pin 1.6mm x 1.6mm thin MLF
®
leadless package as
well as the 6-pin TSOT-23 for cost sensitive applications.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
Input voltage range: 1.7V to 5.5V
Guaranteed 300mA over temperature
Ultra Low dropout voltage of 100mV typical 300mA
High PSRR, up to 90dB @ 1kHz
Output Voltage range: 0.8V to 2.0V
Very low ground current – 23µA under full load
Bias supply voltage range: 2.5V to 5.5V
Stable with 1µF ceramic output capacitor
300mA maximum output current at 1.7V input voltage
Very fast transient response – ideal for digital loads
Thermal shutdown and current limit protection
Tiny 6-pin 1.6mm x 1.6mm Thin MLF
®
package
Cost effective 6-pin TSOT-23 package
Applications
Mobile Phones
PDAs
GPS Receivers
Portable Electronics
___________________________________________________________________________________________________________
Typical Application
MIC5309
BIAS
VIN
VOUT
Li-Ion
2.7V to 4.2V
MIC23050
DC-to-DC
Converter
C
BIAS
1µF
C
IN
1µF
EN
GND
BYP
C
BYP
10nF
C
OUT
1µF
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 • http://www.micrel.com
May 2008
M9999-051508-D
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