MIC5255-2.8BM5TR Micrel Semiconductor, MIC5255-2.8BM5TR Datasheet

MIC5255-2.8BM5TR

Manufacturer Part Number

MIC5255-2.8BM5TR

Description

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC5255-2.5YD5TR.pdf (13 pages)

Specifications of MIC5255-2.8BM5TR

Date_code

05+

Packing_info

SOT-153

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MIC5255-2.8BM5TR

Manufacturer:

MICREL

Quantity:

3 186

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General Description

The MIC5255 is an efficient, precise CMOS voltage

regulator optimized for ultra-low-noise applications. It

offers 1% initial accuracy, extremely-low dropout voltage

(135mV at 150mA) and low ground current (typically

90µA). The MIC5255 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

devices, the MIC5255 provides a TTL-logic-compatible en-

able pin. When disabled, power consumption drops nearly

to zero.

The

capacitors, reducing the amount of board space necessary

for power applications, critical in handheld wireless

devices.

Key features include current limit, thermal shutdown, faster

transient response, and an active clamp to speed up

device turn-off. Available in the 6-pin 2mm × 2mm MLF

package, the IttyBitty

Thin SOT-23-5, which offers the same footprint as the

standard IttyBitty

MIC5255 offers a range of output voltages.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

___________________________________________________________________________________________________________

Typical Application

IttyBitty is a registered trademark of Micrel, Inc

MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.

November 2006

Shutdown

EN (pin 3) may be

connected directly

to IN (pin 1).

= 1.0µF

Ceramic

Enable

MIC5255

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

also

MIC5255-x.x_M5

SOT-23-5, but only 1mm tall. The

works

SOT-23-5 package and the new

with

OUT

Ceramic

low-ESR

BYP

OUT

= 0.01µF

= 1.0µF

ceramic

Features

• Input voltage range: 2.7V to 6.0V

• Thin SOT package: 1mm height SOT-23-5

• Ultra-low output noise: 30µV(rms)

• Stability with ceramic output capacitors

• Ultra-low dropout: 135mV @ 150mA

• High output accuracy:

• Low quiescent current: 90µA

• Tight load and line regulation

• 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

408

) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

–

150mA Low Noise µCap CMOS LDO

Ultra-Low-Noise Regulator Application

1.0% initial accuracy

2.0% over temperature

MIC5255

M9999-110906

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