MIC3775-1.5BMM Micrel Inc, MIC3775-1.5BMM Datasheet

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MIC3775-1.5BMM

Manufacturer Part Number
MIC3775-1.5BMM
Description
IC REG LDO 750MA 1.5V 8-MSOP
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC3775-1.5BMM

Regulator Topology
Positive Fixed
Voltage - Output
1.5V
Voltage - Input
2.25 ~ 6 V
Voltage - Dropout (typical)
0.28V @ 750mA
Number Of Regulators
1
Current - Output
750mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Limit (min)
-
General Description
The MIC3775 is a 750mA low-dropout linear voltage
regulators that provides low-voltage, high-current output
from an extremely small package. Utilizing Micrel’s
proprietary Superβeta PNP
offers extremely low-dropout (typically 280mV at 750mA)
and low ground current (typically 7.5mA at 750mA).
The MIC3775 is ideal for PC add-in cards that need to
convert from standard 5V to 3.3V or 3.0V, 3.3V to 2.5V or
2.5V to 1.8Vor 1.65V. A guaranteed maximum dropout
voltage of 500mV over all operating conditions allows the
MIC3775 to provide 2.5V from a supply as low as 3.0V and
1.8V or 1.5V from a supply as low as 2.25V.
The MIC3775 is fully protected with overcurrent limiting,
thermal shutdown, and reversed-leakage protection. Fixed
and adjustable output voltage options are available with an
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.
___________________________________________________________________________________________________________
Typical Application
PowerPC is a trademark of IBM Corp.
Super βeta PNP is a registered trademark of Micrel, Inc.
December 2006
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
1.25V/750mA Adjustable Regulator
®
pass element, the MIC3775
1
Features
• Fixed and adjustable output voltages to 1.24V
• 280mV typical dropout at 750mA
• Stable with ceramic capacitor
• 750mA minimum guaranteed output current
• 1% initial accuracy
• Low ground current
• Current limiting and thermal shutdown
• Reversed-leakage protection
• Fast transient response
• Low-profile power MSOP-8 package
Applications
• Fiber optic modules
• LDO linear regulator for PC add-in cards
• PowerPC™ power supplies
• High-efficiency linear power supplies
• SMPS post regulator
• Multimedia and PC processor supplies
• Battery chargers
• Low-voltage microcontrollers and digital logic
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V or 1.65V conversion
750mA µCap Low-Voltage
Low-Dropout Regulator
MIC3775
M9999-121906

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MIC3775-1.5BMM Summary of contents

Page 1

... A guaranteed maximum dropout voltage of 500mV over all operating conditions allows the MIC3775 to provide 2.5V from a supply as low as 3.0V and 1.8V or 1.5V from a supply as low as 2.25V. The MIC3775 is fully protected with overcurrent limiting, thermal shutdown, and reversed-leakage protection ...

Page 2

... Micrel, Inc. Ordering Information Part Number Standard MIC3775-1.5BMM MIC3775-1.5YMM MIC3775-1.65BMM MIC3775-1.65YMM MIC3775-1.8BMM MIC3775-1.8YMM MIC3775-2.5BMM MIC3775-2.5YMM MIC3775-3.0BMM MIC3775-3.0YMM MIC3775-3.3BMM MIC3775-3.3YMM MIC3775BMM MIC3775YMM Note: For other voltages. Contact Micrel Marketing for details. Pin Configuration MIC3775-x.x (Fixed) 8-Pin MSOP (MM) Pin Description Pin Number Pin Name ...

Page 3

... Typ – ≤ V ≤ 6V –2 OUT IN ≤ 6V 0.06 IN ≤ 750mA 0.2 OUT 40 125 210 280 + 1V 700 + 1V 3 7.5 1.6 2. 0.01 250 93 1 1.227 1.240 1.215 40 MIC3775 ) ...................... Note 4 Max Units 0 ppm/°C 200 mV 250 mV mV 500 mV µ 2 µA 2 µA 4 µA 1 µ ...

Page 4

... Minimum input operating voltage is 2.25V the quiescent current GND IN GND December 2006 ÷ (T – where T OUT(worst case) J(max) J(min OUT 4 is +125°C and T is –40°C. J(max) J(min 1V. For output voltages below 1.75V, dropout voltage is IN OUT MIC3775 M9999-121906 ...

Page 5

... Micrel, Inc. Typical Characteristics December 2006 5 MIC3775 M9999-121906 ...

Page 6

... Micrel, Inc. Typical Characteristics (cont.) December 2006 6 MIC3775 M9999-121906 ...

Page 7

... Micrel, Inc. Typical Characteristics (cont.) December 2006 7 MIC3775 M9999-121906 ...

Page 8

... Micrel, Inc. Functional Characteristics December 2006 8 MIC3775 M9999-121906 ...

Page 9

... Micrel, Inc. Functional Diagrams MIC3775 Fixed Regulator with Flag and Enable Block Diagram December 2006 MIC3775 Adjustable Regulator Block Diagram 9 MIC3775 M9999-121906 ...

Page 10

... Figure 1. Capacitor Requirements Output Capacitor The MIC3775 requires an output capacitor for stable operation µCap LDO, the MIC3775 can operate with ceramic output capacitors as long as the amount of capacitance is 10µF or greater. For values of output capacitance lower than 10µF, the recommended ESR range is 200mΩ ...

Page 11

... Power MSOP-8 Thermal Characteristics One of the secrets of the MIC3775’s performance is its power MSOP-8 package featuring half the thermal resistance of a standard MSOP-8 package. Lower thermal resistance means more output current or higher input voltage for a given package size ...

Page 12

... Figure 5 shows that the required area of copper is 160mm it will vary depending upon the availability of copper ground plane to which it is attached – × OUT OUT IN GND P = (3.3V – 2.5V) × 750mA + 3.3V × 7.5mA 600mW + 25mW 625mW D 2 .The θ of this package is ideally 80°C/W, but JA MIC3775 2 . M9999-121906 ...

Page 13

... 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 December 2006 8-Pin MSOP (MM) indemnify Micrel for any damages resulting from such use or sale. © 2002 Micrel, Incorporated. 13 MIC3775 M9999-121906 ...

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