IC REG LDO 1.0A 1.8V 8-SOIC

 

MIC37101-1.8YM TR

Manufacturer Part NumberMIC37101-1.8YM TR
DescriptionIC REG LDO 1.0A 1.8V 8-SOIC
ManufacturerMicrel Inc
MIC37101-1.8YM TR datasheets

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Specifications of MIC37101-1.8YM TR

Regulator TopologyPositive FixedVoltage - Output1.8V
Voltage - Input2.25 ~ 6 VVoltage - Dropout (typical)0.28V @ 1A
Number Of Regulators1Current - Output1A (Min)
Operating Temperature-40°C ~ 125°CMounting TypeSurface Mount
Package / Case8-SOIC (3.9mm Width)Lead Free Status / RoHS StatusLead free / RoHS Compliant
Current - Limit (min)-Other namesMIC37101-1.8YMTR
MIC37101-1.8YMTR
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General Description
The MIC37100, MIC37101, and MIC37102 are 1A low-
dropout, linear voltage regulators that provide low-voltage,
high-current output from an extremely small package.
Utilizing Micrel’s proprietary Super βeta PNP
element, the MIC37100/01/02 offers extremely low dropout
(typically 280mV at 1A) and low ground current (typically
11mA at 1A).
The MIC37100 is a fixed output regulator offered in the
SOT-223 package. The MIC37101 and MIC37102 are
fixed and adjustable regulators, respectively, in a thermally
enhanced power 8-pin SOIC (small outline package) and
the SOT-223 package. The MIC37102 is also available in
the S-PAK power package, for applications that require
higher power dissipation or higher operating ambient
temperatures.
The MIC37100/01/02 is ideal for PC add-in cards that
need to convert from standard 5V to 3.3V, 3.3V to 2.5V or
2.5V to 1.8V or lower. A guaranteed maximum dropout
voltage of 500mV over all operating conditions allows the
MIC37100/01/02 to provide 2.5V from a supply as low as
3V and 1.8V from a supply as low as 2.3V.
The MIC37100/01/02 is fully protected with overcurrent
limiting and thermal shutdown. Fixed output voltages of
1.5V, 1.65V, 1.8V, 2.5V and 3.3V are available on
MIC37100/01 with adjustable output voltages to 1.24V on
MIC37102.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
___________________________________________________________________________________________________________
Typical Application
MIC37100
V
IN
IN
OUT
3.3V
GND
2.5V/1A Regulator
Super βeta PNP is a registered trademark of Micrel, Inc.
PowerPC is a registered trademark of IBM Corporation
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
September 2007
MIC37100/37101/37102
Features
• Fixed and adjustable output voltages to 1.24V
• µCap Regulator, 10µF ceramic output capacitor stable
• 280mV typical dropout at 1A
®
pass
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V, 1.65V or 1.5V conversion
• 1A minimum guaranteed output current
• 1% initial accuracy
• Low ground current
• Current limiting and thermal shutdown
• Reversed-leakage protection
• Fast transient response
• Low-profile SOT-223 package
• Power SO-8 package
• S-PAK package (MIC37102 only)
Applications
• LDO linear regulator for PC add-in cards
• PowerPC
• High-efficiency linear power supplies
• SMPS post regulator
• Multimedia and PC processor supplies
• Battery chargers
• Low-voltage microcontrollers and digital logic
2.5V
10F
ceramic
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
1A Low-Voltage µCap LDO
®
power supplies
Dropout
vs. Output Current
350
2.5V
300
OUT
250
200
3.3V
OUT
150
100
50
0
0
0.25
0.5
0.75
1
OUTPUT CURRENT (A)
M9999-090607

MIC37101-1.8YM TR Summary of contents

  • Page 1

    ... General Description The MIC37100, MIC37101, and MIC37102 are 1A low- dropout, linear voltage regulators that provide low-voltage, high-current output from an extremely small package. Utilizing Micrel’s proprietary Super βeta PNP element, the MIC37100/01/02 offers extremely low dropout (typically 280mV at 1A) and low ground current (typically 11mA at 1A). The MIC37100 is a fi ...

  • Page 2

    ... MIC37102WR* * RoHS compliant with ‘high-melting solder’ exemption. Pin Configuration GND TAB GND SOT-223 (S) MIC37100-x.x (Fixed OUT 3 FLG 4 8-Pin SOIC MIC37101-x.x (Fixed) September 2007 Voltage Pb-Free / 1.5V 1.65V 1.8V 2.5V 3.3V 1.5V 1.65V 1.8V 2.1V 2.5V 3.3V Adj. Adj. 3 OUT 8 GND ...

  • Page 3

    ... Micrel, Inc. Pin Description Pin Number Pin Number Pin Number MIC37100 MIC37101 MIC37102 SOT-223 SOIC-8 SOIC-8 — — 4 — — 2, TAB 5–8 September 2007 Pin Number Pin Name MIC37102 S-PAK OUT — — FLG 4 5 ADJ 5–8 3, TAB GND 3 MIC37100/37101/37102 Pin Description Enable (Input): CMOS-compatible control input ...

  • Page 4

    Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V ) .......................................... 0V to +6.5V IN Enable Voltage (V )...................................................+6.5V EN Lead Temperature (soldering, 5 sec.)........................ 260°C Storage Temperature (T ) .........................–65°C to +150°C s (3) ESD Rating Electrical Characteristics V = ...

  • Page 5

    Micrel, Inc. Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. Devices are ESD sensitive. Handling precautions recommended – ...

  • Page 6

    Micrel, Inc. Typical Characteristics September 2007 6 MIC37100/37101/37102 M9999-090607 ...

  • Page 7

    Micrel, Inc. Typical Characteristics (continued) September 2007 7 MIC37100/37101/37102 M9999-090607 ...

  • Page 8

    Micrel, Inc. Typical Characteristics (continued) September 2007 8 MIC37100/37101/37102 M9999-090607 ...

  • Page 9

    Micrel, Inc. Functional Characteristics September 2007 9 MIC37100/37101/37102 M9999-090607 ...

  • Page 10

    ... Micrel, Inc. Functional Diagrams IN IN FLAG EN MIC37101 MIC37101 Fixed Regulator with Flag and Enable Block Diagram IN EN MIC37102 September 2007 1.240V Ref. Thermal Shut- down MIC37100 MIC37100 Fixed Regulator Block Diagram 1.180V 1.240V Ref. 1.240V Ref. MIC37102 Adjustable Regulator Block Diagram ...

  • Page 11

    ... Error Flag The MIC37101 features an error flag (FLG), which monitors the output voltage and signals an error condition when this voltage drops 5% below its expected value. The error fl open-collector output that pulls low under fault conditions and may sink up to 10mA. Low output voltage signifi ...

  • Page 12

    ... Power SOIC-8 Thermal Characteristics One of the secrets of the MIC37101/02’s performance is its power SO-8 package featuring half the thermal resistance of a standard SO-8 package. Lower thermal resistance means more output current or higher input voltage for a given package size ...

  • Page 13

    Micrel, Inc. Figure 4 shows copper area versus power dissipation with each trace corresponding to a different temperature rise above ambient. From these curves, the minimum area of copper necessary for the part to operate safely can be determined. The ...

  • Page 14

    Micrel, Inc. Package Information September 2007 SOT-223 (S) 5-Pin S-PAK (R) 14 MIC37100/37101/37102 M9999-090607 ...

  • Page 15

    Micrel, Inc. MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no ...