MIC3385

更新时间： 2024-11-20 04:39:55

品牌	Logo	应用领域
麦瑞 - MICREL		/
页数	文件大小	规格书
15页	672K
描述
8MHz Power System Module with LDO Standby Mode

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MIC3385 数据手册

MIC3385

8MHz Power System Module with LDO

Standby Mode

Preliminary Information

General Description

Features

The Micrel MIC3385 is a high efficiency Power System on

a Chip that features a LOWQ™ LDO standby mode that

draws only 18µA of quiescent current. The MIC3385

requires no external inductor enabling an ultra-low noise,

small size, and high efficiency solution for portable power

applications.

• 2.7 to 5.5V supply voltage

• Light load LOWQ™ LDO mode

–

18µA quiescent current

Low noise, 75µVrms

• 8MHz PWM mode

–

Output current to 600mA

>90% efficiency

100% maximum duty cycle

In PWM mode, the MIC3385 operates with a constant

frequency 8MHz PWM control. Under light load conditions,

such as in system sleep or standby modes, the PWM

switching operation can be disabled to reduce switching

losses. In this light load LOWQ™ mode, the LDO

maintains the output voltage and draws only 18µA of

quiescent current. The LDO mode of operation saves

battery life while not introducing spurious noise and high

ripple as experienced with pulse skipping or bursting mode

regulators.

• Adjustable output voltage option down to 1V

• Ultra-fast transient response

• NO external inductor required

• Enables sub 1mm profile solution

• Fully integrated MOSFET switches

• Micropower shutdown

• Thermal shutdown and current limit protection

• Pb-free 14-pin 3mm x 3.5mm MLF^®package

• –40°C to +125°C junction temperature range

The MIC3385 operates from 2.7V to 5.5V input and

features internal power MOSFETs that can supply up to

600mA output current in PWM mode. It can operate with a

maximum duty cycle of 100% for use in low-dropout

conditions.

The MIC3385 is available in the 14-pin 3mm x 3.5mm

MLF^®package with a junction operating range from –40°C

to +125°C.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Applications

• Cellular phones

• PDAs

• USB peripherals

Typical Application

1.8V

Efficiency

OUT

100

=3.2V

=3.6V

=4.2V

Adjustable Output Buck Regulator with LOWQ™ Mode

100 200 300 400 500

OUTPUT CURRENT (mA)

Patent Pending

LOWQ is a trademark of Micrel, Inc.

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

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

M9999-111006-A

November 2006

12 3 4 5 6 7...15

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与MIC3385相关器件

型号	品牌	获取价格	描述	数据表
MIC3385_10	MICREL	获取价格	8MHz Inductorless Buck Regulator with LDO Standby Mode
MIC3385-1.5YHL	MICREL	获取价格	8MHz Inductorless Buck Regulator with LDO Standby Mode
MIC3385-1.5YHL-TR	MICROCHIP	获取价格	2A SWITCHING REGULATOR, 8800kHz SWITCHING FREQ-MAX, PDSO14
MIC3385YHL	MICREL	获取价格	8MHz Inductorless Buck Regulator with LDO Standby Mode
MIC3385YHL-TR	MICROCHIP	获取价格	2A SWITCHING REGULATOR, 8800kHz SWITCHING FREQ-MAX, PDSO14
MIC3385YML	MICREL	获取价格	8MHz Power System Module with LDO Standby Mode
MIC3385YMLTR	MICREL	获取价格	2A SWITCHING REGULATOR, 8800kHz SWITCHING FREQ-MAX, PDSO14, 3 X 3.50 MM, LEAD FREE, MLF-14
MIC-3392	ADVANTECH	获取价格	6U CompactPCI Intel? Core? 2 Duo Processor-based Board with Dual PCIe GbE/DDR2/SATA/PMC
MIC-3392A2-M1E	ADVANTECH	获取价格	6U CompactPCI Intel? Core? 2 Duo Processor-based Board with Dual PCIe GbE/DDR2/SATA/PMC
MIC-3392A2-M2E	ADVANTECH	获取价格	6U CompactPCI Intel? Core? 2 Duo Processor-based Board with Dual PCIe GbE/DDR2/SATA/PMC

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