MIC5356-SGYMME Micrel Inc, MIC5356-SGYMME Datasheet

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MIC5356-SGYMME

Manufacturer Part Number
MIC5356-SGYMME
Description
IC REG LDO 500MA 3.3/1.8V 8MSOP
Manufacturer
Micrel Inc
Series
-r
Datasheet

Specifications of MIC5356-SGYMME

Regulator Topology
Positive Fixed
Voltage - Output
3.3V, 1.8V
Voltage - Input
2.5 V ~ 5.5 V
Voltage - Dropout (typical)
0.35V @ 500mA
Number Of Regulators
2
Current - Output
500mA
Current - Limit (min)
525mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
576-3887-5
MIC5356-3.3/1.8YMME
General Description
The MIC5355/6 is an advanced dual, micropower, low
dropout linear regulator. The MIC5355/6 provides low
quiescent current operation, using only 70μA with both
outputs enabled making it ideal for battery-powered
systems. In shutdown, the quiescent current drops less
than 1µA. The MIC5355/6 provides two independently-
controlled high-performance 500mA LDOs with typical
dropout voltage of 350mV at rated load. In addition, the
MIC5355/6 is optimized to provide fast load and line
transient performance with low-ESR ceramic output
capacitors, requiring a minimum of only 2.2µF.
The MIC5356 also incorporates an active discharge
feature when the part is disabled that switches in a 30Ω
load to pull down the output of the regulator. The
MIC5355/6 is available in fixed output voltages in a
thermally-enhanced 8-pin ePad MSOP package.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Typical Application
January 2011
_________________________________________________________________________________________________________________________
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 •
Features
• 2.5V to 5.5V input voltage range
• 2% initial output accuracy
• Wide output voltage range: 1.0V to 3.3V
• Low quiescent current: 38µA per output
• Very low quiescent current in shutdown: <1μA typical
• µCap stable with 2.2µF ceramic capacitor
• Low dropout voltage: 350mV at 500mA
• Excellent load/line transient response
• Independent logic controlled enable pins
• Output discharge circuit: MIC5356
• Current and thermal limit protection
• Power 8-pin ePad MSOP package
Applications
• GPS, PMP, DSC, and PDAs
• Notebooks and desktops
• Digital TV
• Portable electronics
Dual 500mA µCap Low Dropout,
Micropower Linear Regulator
MIC5355/6
http://www.micrel.com
M9999-011311-A

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MIC5356-SGYMME Summary of contents

Page 1

... MIC5355/6 is optimized to provide fast load and line transient performance with low-ESR ceramic output capacitors, requiring a minimum of only 2.2µF. The MIC5356 also incorporates an active discharge feature when the part is disabled that switches in a 30Ω load to pull down the output of the regulator. The MIC5355/6 is available in fixed output voltages in a thermally-enhanced 8-pin ePad MSOP package ...

Page 2

... Ordering Information Manufacturing Part ( Part Number MIC5355-3.3/1.8YMME MIC5355-SGYMME MIC5355-S4YMME MIC5355-3.3/1.2YMME MIC5355-3.3/1.0YMME MIC5355-SCYMME MIC5355-1.8/1.2YMME MIC5355-G4YMME MIC5355-2.5/1.8YMME MIC5355-JGYMME MIC5356-3.3/1.8YMME MIC5356-SGYMME MIC5356-3.3/1.2YMME MIC5356-S4YMME MIC5356-3.3/1.0YMME MIC5356-SCYMME MIC5356-1.8/1.2YMME MIC5356-G4YMME MIC5356-2.5/1.8YMME MIC5356-JGYMME Notes: 1. Other voltage available. Contact Micrel for detail. 2. MIC5356 offers Auto-Discharge function. 3. Contact Marketing for availability. ...

Page 3

... Current Limit V = 0V. OUT Output Voltage Noise C = 2.2µF, 10Hz to 100kHz. OUT Auto-Discharge NFET MIC5356 ONLY; V Resistance Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. The maximum allowable power dissipation of any T dissipation will result in excessive die temperature and the register will go into thermal shutdown ...

Page 4

Micrel, Inc. Electrical Characteristics +1V; higher of the two outputs EN1 EN2 OUT bold values indicate –40°C to +125°C, unless noted. Parameter Condition Enable Inputs (EN1/EN2) Logic Low. Enable Input Voltage ...

Page 5

Micrel, Inc. Typical Characteristics Power Supply Rejection Ratio -80 -70 -60 250mA -50 500mA -40 100µA -30 - 2.82V 1.8V -10 OUT C = 2.2µF OUT 0 10 100 1000 10000 100000 ...

Page 6

Micrel, Inc. Typical Characteristics (Continued) Ground Current vs. Temperature (Dual Outputs) 120 500mA 100 LOAD 2.5V 1.8V OUT1 OUT2 3.5V 20 EN1 EN2 ...

Page 7

Micrel, Inc. Functional Characteristics January 2011 7 MIC5355/6 M9999-011311-A ...

Page 8

... Micrel, Inc. Functional Diagrams January 2011 MIC5355 Block Diagram MIC5356 Block Diagram 8 MIC5355/6 M9999-011311-A ...

Page 9

... Forcing the enable pin low disables the regulator and places it into an off mode current state drawing virtually zero current. When disabled, the MIC5356 switches an internal 30Ω load on the regulator output to discharge the external capacitor. ...

Page 10

Micrel, Inc. Substituting P for P and solving for the ambient D D(MAX) operating temperature will give the maximum operating conditions for the regulator circuit. The junction to ambient thermal resistance for the minimum footprint is 64.4°C/W. The maximum power ...

Page 11

Micrel, Inc. Typical Application Schematic Bill of Materials Item Part Number C1, C2, C3 C1005X5R0J225M U1 MIC5355/6-xxYMME Notes: 1. TDK: www.tdk.com. 2. Micrel, Inc.: www.micrel.com. January 2011 Manufacturer Description (1) TDK 2.2µF ceramic capacitor, 6.3V, X5R, size 0402 (6) Micrel, ...

Page 12

Micrel, Inc. PCB Layout Recommendations January 2011 Top Layer Bottom Layer 12 MIC5355/6 M9999-011311-A ...

Page 13

Micrel, Inc. Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished ...

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