MIC5253-3.0YC5TR Micrel Semiconductor, MIC5253-3.0YC5TR Datasheet

MIC5253-3.0YC5TR

Manufacturer Part Number

MIC5253-3.0YC5TR

Description

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC5253-1.85YC5TR.pdf (9 pages)

Specifications of MIC5253-3.0YC5TR

Date_code

06+

Packing_info

SOT-353

Current page: 1 of 9
Download datasheet (173Kb)

November 2005

General Description

The MIC5253 is an efficient, CMOS voltage regulator opti-

mized for ultra-low-noise applications. It offers 1.5% initial

accuracy, extremely low dropout voltage (165mV at 100mA),

and low ground current (typically 95 A at full load). The

MIC5253 provides a very low noise output, ideal for RF

applications where a clean voltage source is required. A

noise bypass pin is also available for further reduction of

output noise.

Designed specifically for handheld and battery-powered de-

vices, the MIC5253 provides a TTL-logic-compatible enable

pin. When disabled, power consumption drops nearly to zero.

The MIC5253 also works with low-ESR ceramic capacitors,

reducing the amount of board space necessary for power

applications, critical in handheld wireless devices.

Available in the Teeny™ SC-70-5 package, the MIC5253

offers a wide range of output voltages. Key features include

current limit, thermal shutdown, faster transient response,

and an active clamp to speed up device turn-off.

Typical Application

MIC5253

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

Ultra-Low-Noise Regulator Application

Shutdown

EN (pin 3) may be

connected directly

to IN (pin 1).

= 1.0 F

Ceramic

Enable

MIC5253-x.xBC5

Features

• Input voltage range: 2.7V to 5.5V

• Teeny™ SC-70-5 package

• Ultra-low output noise: 30 V(rms)

• 100mA continuous output current, 150mA peak current

• Stability with ceramic output capacitors

• Ultralow dropout: 165mV @ 100mA

• High output accuracy:

• Low ground current: 95 A

• TTL-Logic-controlled enable input

• “Zero” off-mode current

• Thermal shutdown and current limit protection

Applications

• Cellular phones and pagers

• Cellular accessories

• Battery-powered equipment

• Laptop, notebook, and palmtop computers

• Consumer/personal electronics

1.5% initial accuracy

3.0% over temperature

100mA Low Noise Cap Teeny™ LDO

OUT

Ceramic

BYP

OUT

= 0.01 F

= 1.0 F

MIC5253

M9999-112305

Micrel

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