MIC38300HYHL TR Micrel Inc, MIC38300HYHL TR Datasheet

MIC38300HYHL TR

Manufacturer Part Number

MIC38300HYHL TR

Description

IC REG LDO 2.2A LN HE 28HMLF

Manufacturer

Micrel Inc

Series

HELDO™r

Datasheet

1.MIC38300HYHL_EV.pdf (12 pages)

Specifications of MIC38300HYHL TR

Operating Temperature

-40°C ~ 125°C

Regulator Topology

Positive Adjustable

Voltage - Output

1 ~ 5 V

Voltage - Input

3 ~ 5.5 V

Voltage - Dropout (typical)

0.85V @ 2.2A

Number Of Regulators

Current - Output

2.2A

Current - Limit (min)

Mounting Type

Surface Mount

Package / Case

28-MLF®, QFN

Primary Input Voltage

3.3V

Output Voltage Adjustable Range

1V To 5V

Dropout Voltage Vdo

850mV

No. Of Pins

Output Current

Voltage Regulator Case Style

MLF

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

For Use With

576-2961 - BOARD EVAL FOR MIC38300HYHL

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

576-2960-2

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General Description

The MIC38300 is a 3A peak, 2.2A continuous output

current step down converter. This is the first device in a

new generation of HELDO™ (High Efficiency Low

Dropout) regulators that provide the benefits of an LDO in

respect to ease of use, fast transient performance, high

PSRR and low noise while offering the efficiency of a

switching regulator.

As output voltages move lower, the output noise and

transient response of a switching regulator become an

increasing challenge for designers. By combining a

switcher whose output is slaved to the input of a high

performance LDO, high efficiency is achieved with a clean

low noise output. The MIC38300 is designed to provide

less than 5mV of peak to peak noise and over 70dB of

PSRR at 1kHz. Furthermore, the architecture of the

MIC38300 is optimized for fast load transients that allow a

maintenance of less than 30mV of output voltage deviation

even during ultra fast load steps, making the MIC38300 an

ideal choice for low voltage ASICs and other digital ICs.

The MIC38300 features a fully integrated switching

regulator and LDO combo, operates with input voltages

from 3.0V to 5.5V input and offers adjustable output

voltages down to 1.0V.

The MIC38300 is offered in the small 28-pin 4×6×0.9mm

MLF

Datasheets and support documentation can be found on

Micrel’s web site at: www.micrel.com

___________________________________________________________________________________________________________

Typical Application

HELDO is a trademark of Micrel, Inc.

MLF and MicroLeadFrame are registered trademark of Amkor Technology.

June 2010

package and can operate from –40°C to +125°C.

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

Features

Applications

408

•

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

3A peak output current

2.2A continuous operating current

Input voltage range: 3.0V to 5.5V

Adjustable output voltage down to 1.0V

Output noise less than 5mV

Ultra fast transient performance

Unique switcher plus LDO architecture

Fully integrated MOSFET switches

Micro-power shutdown

Easy upgrade from LDO as power dissipation

becomes an issue

Thermal shutdown and current limit protection

4mm × 6mm × 0.9mm MLF

Point-of-load applications

Networking, server, industrial power

Wireless base-stations

Sensitive RF applications

3A High Efficiency Low Dropout

MIC38300

Regulator

HELDO™

package

M9999-061010-D

HELDO™

Related parts for MIC38300HYHL TR

MIC38300HYHL TR Summary of contents

Page 1

... Micrel’s web site at: www.micrel.com ___________________________________________________________________________________________________________ Typical Application HELDO is a trademark of Micrel, Inc. MLF and MicroLeadFrame are registered trademark of Amkor Technology. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( June 2010 MIC38300 HELDO™ 3A High Efficiency Low Dropout ...

Page 2

Micrel, Inc. Block Diagram AVIN MIC38300 Ordering Information Part Number Current MIC38300HYHL Note: For additional voltage options, contact Micrel. June 2010 Switch Control VREF Voltage Reference VEN-VREF + - Output (1) Voltage Temperature Range 3.0A ADJ –40°C to +125°C 2 ...

Page 3

Micrel, Inc. Pin Configuration Pin Description Pin Number Pin Name MIC38300HYHL SWO 6, 23, 24, 25, SW 26, 27 ePAD 8 AVIN 9 LPF 10 AGND 11 FB 12, 13 LDOOUT 14, ...

Page 4

Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V ) .........................................................6V IN Output Switch Voltage (V ) ...........................................6V SW LDO Output Voltage (V ) .............................................6V OUT Logic Input Voltage (V ) .................................–0.3V to VIN EN Power Dissipation .................................. Internally Limited Storage ...

Page 5

Micrel, Inc. Typical Characteristics V = 3.3V 1.8V 10µ OUT OUT MIC38300 PSRR 100 1k 10k 100k FREQUENCY (Hz) Output Voltage vs. Temperature ...

Page 6

Micrel, Inc. Typical Characteristics V = 3.3V 1.8V 10µ OUT OUT Switch Frequency vs. RLPF Resistance (3.3V-1.0V 2 1.5 10mA 500mA 1 1.5A 0 100 1000 RLPF RESISTANCE ...

Page 7

Micrel, Inc. Functional Characteristics V = 3.3V 1.8V 10µF, Inductor = 470nH OUT OUT June 2010 = 25kΩ 100mA, unless noted LPF OUT 7 MIC38300 M9999-061010-D ...

Page 8

Micrel, Inc. EMI Performance V =1.8V, I =1.2A OUT OUT Additional components to MIC38150 Evaluation Board (Performance similar to MIC38300): 1. Input Ferrite Bead Inductor. Part number: BLM21AG102SN1D 2. 0.1µF and 0.01µF ceramic bypass capacitors on PVIN, SW, SWO, and ...

Page 9

Micrel, Inc. Application Information Enable Input The MIC38300 features a TTL/CMOS compatible positive logic enable input for on/off control of the device. High enables the regulator while low disables the regulator. In shutdown the regulator consumes very little current (only ...

Page 10

Micrel, Inc. case, inductor selection becomes increasingly critical in efficiency calculations. As the inductors are reduced in size, the DC resistance (DCR) can become quite significant. The DCR losses can be calculated as follows: 2 L_P = I × DCR ...

Page 11

Micrel, Inc. Package Information June 2010 ® 28-Pin 4mm x 6mm MLF (ML) 11 MIC38300 M9999-061010-D ...

Page 12

Micrel, Inc. Recommended Landing Pattern Red circle indicates Thermal Via. Size should be .300-.350 mm in diameter and it should be connected to GND plane for maximum thermal performance. MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL ...

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