MIC5259-2.8YML TR Micrel Inc, MIC5259-2.8YML TR Datasheet

IC,VOLT REGULATOR,FIXED,+2.8V,CMOS,LLCC,6PIN,PLASTIC

MIC5259-2.8YML TR

Manufacturer Part Number

MIC5259-2.8YML TR

Description

IC,VOLT REGULATOR,FIXED,+2.8V,CMOS,LLCC,6PIN,PLASTIC

Manufacturer

Micrel Inc

Datasheet

1.MIC5259-2.5YD5_TR.pdf (11 pages)

Specifications of MIC5259-2.8YML TR

Regulator Topology

Positive Fixed

Voltage - Output

2.8V

Voltage - Input

Up to 6V

Voltage - Dropout (typical)

0.3V @ 300mA

Number Of Regulators

Current - Output

300mA

Current - Limit (min)

350mA

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

6-MLF®, QFN

Voltage Regulator Type

Linear

Topology

LDO

Regulator Output Type

Fixed

Polarity Type

Positive

Number Of Outputs

Single

Input Voltage (min)

2.7V

Input Voltage (max)

Output Voltage

2.8V

Package Type

MLF

Output Current

300mA

Load Regulation

0.6%

Line Regulation

0.3%/V

Output Voltage Accuracy

±1.5%

Operating Temp Range

-40C to 125C

Operating Temperature Classification

Automotive

Dropout Voltage@current (max)

0.5@300mA

Dropout Voltage@current (typ)

0.15@150mA/0.3@300mA

Pin Count

Mounting

Surface Mount

Quiescent Current (max)

150uA

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

MIC5259-2.8YMLTR
MIC5259-2.8YMLTR

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General Description

The MIC5259 is an efficient CMOS voltage regulator

optimized for low-noise applications. It offers 1.5% initial

accuracy, low dropout voltage (300mV at 300mA) and low

ground current (typically 105µA at light load). The

MIC5259 provides a very-low-noise output, ideal for RF

applications where a clean voltage source is required. The

MIC5259 has a high PSRR even at low supply voltages,

critical for battery operated electronics. A noise bypass pin

is also available for further reduction of output noise.

Designed speciﬁcally for handheld and battery-powered

devices, the MIC5259 provides a TTL-logic-compatible

enable pin. When disabled, power consumption drops to

nearly zero.

The

capacitors, reducing the amount of board space necessary

for power applications; critical issue in handheld wireless

devices.

Key features include current limit, thermal shutdown, faster

transient response, and an active clamp to speed up

device turn-off. The MIC5259 is available in the 6-pin

2mm × 2mm MLF

package in a wide range of output voltages.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Typical Application

Shutdown

EN (pin 3) may be

connected directly

to IN (pin 1).

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

September 2006

Enable

Ceramic

= 1.0µF

MIC5259

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

MIC5259-x.xBD5/YD5

also

package and the 5-pin Thin SOT-23

works

with

OUT

Ceramic

BYP

OUT

low-ESR

= 0.01µF

= 1.0µF

SHUTDOWN

ceramic

ENABLE

= 1.0µF

Features

• Input voltage range: 2.7V to 6.0V

• PSRR = 70dB @ 1kHz

• Low output noise: 30µV(rms)

• Stability with ceramic output capacitors

• Low-dropout: 300mV @ 300mA

• High-output accuracy:

• Low quiescent current: 105µA

• 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

• Industrial portable electronics

• PC peripherals

300mA High PSRR, Low Noise µCap CMOS LDO

– 1.5% initial accuracy

– 3.0% over temperature

Ultra-Low Noise Regulator Application

MIC5259-x.xBML/YML

MIC5259

0.01µF

(optional)

BYP

M9999-091406

OUT

= 1.0µF

Related parts for MIC5259-2.8YML TR

MIC5259-2.8YML TR Summary of contents

Page 1

... The MIC5259 provides a very-low-noise output, ideal for RF applications where a clean voltage source is required. The MIC5259 has a high PSRR even at low supply voltages, critical for battery operated electronics. A noise bypass pin is also available for further reduction of output noise. ...

Page 2

... MIC5259-2.5BD5 MIC5259-2.5YD5 MIC5259-2.8BD5 MIC5259-2.8YD5 MIC5259-2.85BD5 MIC5259-2.85YD5 MIC5259-3.0BD5 MIC5259-3.0YD5 MIC5259-3.3BD5 MIC5259-3.3YD5 MIC5259-1.5YML MIC5259-1.8YML MIC5259-2.1YML MIC5259-2.5BML MIC5259-2.5YML MIC5259-2.8BML MIC5259-2.8YML MIC5259-2.85BML MIC5259-2.85YML MIC5259-3.0BML MIC5259-3.0YML MIC5259-3.3BML MIC5259-3.3YML * Under bar / Over bar symbol ( Other voltages available, please contact Micrel Marketing for details. Pin Configuration EN GND 3 2 NYxx ...

Page 3

... BYP 53 53 350 475 30 1.6 0.01 0.01 500 150 – θ . Exceeding the maximum allowable power J(max the MIC5259-x.xBM5 (all versions MIC5259 IN Max Units 1 0.3 %/V 3 500 mV 550 mV 1 µA 150 µA 250 µA dB ...

Page 4

... Micrel, Inc. Typical Characteristics September 2006 4 MIC5259 M9999-091406 ...

Page 5

... Micrel, Inc. Typical Characteristics (cont.) September 2006 5 MIC5259 M9999-091406 ...

Page 6

... Micrel, Inc. Functional Characteristics September 2006 6 MIC5259 M9999-091406 ...

Page 7

... Micrel, Inc. Functional Diagram IN Reference Voltage E N Thermal Sensor Under- voltage Lockout GND September 2006 Startup/ Quickstart/ Shutdown Noise Control Cancellation FAULT Error Current Amplifier Amplifier ACTIVE SHUTDOWN 7 MIC5259 OUT M9999-091406 ...

Page 8

... N-Channel MOSFET that turns on when the device is disabled. This allows the output capacitor and load to discharge, de-energizing the load. No-Load Stability The MIC5259 will remain stable and in regulation with no load unlike many other voltage regulators. This is especially important in CMOS RAM keep-alive applica- tions. ...

Page 9

... D(max) D conditions that are critical to the application will give the maximum operating conditions for the regulator circuit. For example, when operating the MIC5259-2.8BML at 70°C with a minimum footprint layout, the maximum input voltage for a set output current can be determined as follows: ° ...

Page 10

... Micrel, Inc. Package Information September 2006 5-Pin Thin SOT-23 (D5) ® 6-Pin 2mm x 2mm MLF (ML) 10 MIC5259 M9999-091406 ...

Page 11

... A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully September 2006 indemnify Micrel for any damages resulting from such use or sale. © 2004 Micrel, Incorporated. 11 MIC5259 M9999-091406 ...

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