MIC94355-OYMT-TR datasheet, PDF

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MIC94355-OYMT-TR: DescriptionLDO Voltage Regulators 500mA Fixed Output LDO; Categorysemiconductor Power management; File Size492KB，17 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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MIC94355-OYMT-TR Overview

LDO Voltage Regulators 500mA Fixed Output LDO

MIC94355-OYMT-TR Parametric

Parameter Name	Attribute value
Product Attribute	Attribute Value
Manufacturer	Microchip
Product Category	LDO Voltage Regulators
RoHS	Details
Mounting Style	SMD/SMT
Package / Case	DFN-6
Output Voltage	1.2 V to 3.4 V
Output Current	500 mA
Number of Outputs	1 Output
Input Voltage MAX	3.6 V
Input Voltage MIN	1.8 V
Output Type	Adjustable
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 125 C
Load Regulation	10 mV
Packaging	Cut Tape
Packaging	MouseReel
Packaging	Reel
Dropout Voltage - Max	100 mV
PSRR / Ripple Rejection - Typ	60 dB
Line Regulation	0.1 %
Factory Pack Quantity	5000
Unit Weight	0.000744 oz

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MIC94325/45/55

500mA LDO with

Ripple Blocker Technology

General Description

The MIC943x5 Ripple Blocker is a monolithic integrated

circuit that provides low-frequency ripple attenuation

(switching noise rejection) to a regulated output voltage.

This is important for applications where a DC/DC switching

converter is required to lower or raise a battery voltage but

where switching noise cannot be tolerated by sensitive

downstream circuits such as in RF applications. The

MIC943x5 maintains high power supply ripple rejection

(PSRR) with input voltages operating near the output

voltage level to improve overall system efficiency. A low-

voltage logic enable pin facilitates ON/OFF control at

typical GPIO voltage levels.

The MIC943x5 operates from an input voltage of 1.8V to

3.6V. The MIC943x5 options include fixed (MIC94345/55)

or adjustable (MIC94325) output voltages. The MIC94355

version offers an auto-discharge to discharge the output

capacitor when the part is disabled.

Packaged in a 0.84mm x 1.32mm 6-ball CSP or a 6-pin

1.6mm x 1.6mm Thin DFN, the MIC943x5 has a junction

operating temperature range of –40C to +125C.

Data sheets and support documentation can be found on

Micrel’s web site at:

www.micrel.com.

Features



1.8V to 3.6V input voltage range



Active noise rejection over a wide frequency band



>50dB from 10Hz to 5MHz at 500mA load



Rated to 500mA output current



Fixed and adjustable output voltages



Optional output auto-discharge when disabled



Current-limit and thermal-limit protected



Ultra-small 0.84mm x 1.32mm 6-ball CSP



1.6mm x 1.6mm, 6-pin Thin DFN



Logic-controlled enable pin

 40C

to +125C junction temperature range

Applications



Smart phones



Tablet PC/notebooks and webcams



Digital still and video cameras



Global positioning systems



Mobile computing



Automotive and industrial applications

_________________________________________________________________________________________________

MIC94355 PSRR

OUT

= 4.7µF

= 2.8V + 40mVpp

-20

-40

-60

-80

10mA

OUT

= 1.8V

OUT

= 4.7µF

Typical Application

PSRR (dB)

500mA

-100

-120

100

1,000

200mA

10,000 100,00 1,000,0 10,000,

10K

100K

10M

000

FREQUENCY (Hz)

Ripple Blocker is a trademark of Micrel, 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

October 2012

M9999-102512-A

MIC94355-OYMT-TR Related Products

	MIC94355-OYMT-TR	MIC94355-FYMT-T5	MIC94355-4YMT-TR	MIC94355-FYMT-TR	MIC94345-GYCS-T5	MIC94355-MYMT-TR	MIC94345-GYMT-T5	MIC94355-SYMT-T5	MIC94355-GYMT-T5	MIC94325YMT-T5
Description	LDO Voltage Regulators 500mA Fixed Output LDO	LDO Voltage Regulators 500mA Fixed LDO w/ Ripple Blocker	LDO Voltage Regulators 500mA Fixed LDO w/ Ripple Blocker	LDO Voltage Regulators 500mA Fixed LDO w/ Ripple Blocker	LDO Voltage Regulators 500mA Fixed LDO w/ Ripple Blocker	LDO Voltage Regulators 500mA Fixed LDO w/ Ripple Blocker	LDO Voltage Regulators	LDO Voltage Regulators 500mA Fixed LDO w/ Ripple Blocker	LDO Voltage Regulators	LDO Voltage Regulators
Product Attribute	Attribute Value	Attribute Value	-	Attribute Value	Attribute Value	Attribute Value	-	Attribute Value	Attribute Value	-
Manufacturer	Microchip	Microchip	-	Microchip	Microchip	Microchip	-	Microchip	Microchip	-
Product Category	LDO Voltage Regulators	LDO Voltage Regulators	-	LDO Voltage Regulators	LDO Voltage Regulators	LDO Voltage Regulators	-	LDO Voltage Regulators	LDO Voltage Regulators	-
RoHS	Details	Details	-	Details	Details	Details	-	Details	Details	-
Mounting Style	SMD/SMT	SMD/SMT	-	SMD/SMT	SMD/SMT	SMD/SMT	-	SMD/SMT	SMD/SMT	-
Package / Case	DFN-6	DFN-6	-	DFN-6	CSP-6	DFN-6	-	DFN-6	DFN-6	-
Output Voltage	1.2 V to 3.4 V	1.5 V	-	1.5 V	1.8 V	2.8 V	-	3.3 V	-	-
Output Current	500 mA	500 mA	-	500 mA	500 mA	500 mA	-	500 mA	500 mA	-
Number of Outputs	1 Output	1 Output	-	1 Output	1 Output	1 Output	-	1 Output	1 Output	-
Input Voltage MAX	3.6 V	3.6 V	-	3.6 V	3.6 V	3.6 V	-	3.6 V	-	-
Input Voltage MIN	1.8 V	1.8 V	-	1.8 V	1.8 V	1.8 V	-	1.8 V	-	-
Output Type	Adjustable	Fixed	-	Fixed	Fixed	Fixed	-	Fixed	-	-
Minimum Operating Temperature	- 40 C	- 40 C	-	- 40 C	- 40 C	- 40 C	-	- 40 C	- 40 C	-
Maximum Operating Temperature	+ 125 C	+ 125 C	-	+ 125 C	+ 125 C	+ 125 C	-	+ 125 C	+ 125 C	-
Load Regulation	10 mV	10 mV	-	10 mV	10 mV	10 mV	-	10 mV	-	-
Packaging	Reel	Reel	-	Reel	Reel	Reel	-	Reel	Reel	-
Dropout Voltage - Max	100 mV	200 mV	-	200 mV	200 mV	200 mV	-	200 mV	-	-
PSRR / Ripple Rejection - Typ	60 dB	85 dB	-	85 dB	85 dB	85 dB	-	85 dB	-	-
Line Regulation	0.1 %	1 %	-	1 %	1 %	1 %	-	1 %	-	-
Factory Pack Quantity	5000	500	-	5000	500	5000	-	500	500	-
Unit Weight	0.000744 oz	0.000744 oz	-	0.000744 oz	0.002116 oz	0.000744 oz	-	0.000744 oz	0.000744 oz	-

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