MIC5317

High-Performance Single 150mA LDO

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

August 23, 2013

Revision 1.0

General Description

The MIC5317 is a high performance 150mA low dropout

regulator offering high power supply rejection (PSRR) in

an ultra-small 1mm × 1mm package for stringent space

requirements and demanding performance. The MIC5317

operates from an input voltage from 2.5V to 6.0V and is

capable of providing the output voltages of 1.0V to 3.6V

making it ideal for USB port or 6V AC adaptor applications.

The MIC5317 offers 2% initial accuracy, low dropout

voltage (155mV @ 150mA), and low ground current

(typically 29µA). The MIC5317 can also be put into a zero-

off-mode current state, drawing virtually no current when

disabled.

The MIC5317 is available in several advanced packages

including a lead-free (RoHS-compliant) 1mm × 1mm Thin

DFN occupying only 1mm

in board area compared to SC-70 and 2mm × 2mm DFN

packages. It is also available in a SOT23-5 and TSOT23-5

package.

The MIC5317 has an operating junction temperature range

of –40°C to 125°C.

Datasheets and support documentation are available on

Micrel’s web site at: www.micrel.com.

Features

• Tiny 1mm × 1mm Thin DFN, SOT23-5 and

TSOT23-5 packages

• Wide 2.5V to 6V operating range

• 150mA guaranteed output current

• Stable with 1µF ceramic output capacitors

• Low dropout voltage: 155mV @ 150mA

• Excellent load/line transient response

• Low quiescent current: 29µA

• High PSRR: 70dB

• Thermal-shutdown and current-limit protection

Applications

• USB dongles

• Wireless LANs

• PC Desktops, laptops, and tablets

• Battery-powered equipment

• Digital still and video cameras

• 5V general purpose

Typical Application