MIC5231-2.75YM5 MICREL [Micrel Semiconductor], MIC5231-2.75YM5 Datasheet

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MIC5231-2.75YM5

Manufacturer Part Number
MIC5231-2.75YM5
Description
Micropower ?Cap LDO Regulator
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet

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Part Number:
MIC5231-2.75YM5
Manufacturer:
MICREL
Quantity:
172
General Description
The MIC5231 µCap low dropout voltage regulator is
intended for low output current biasing applications. It
features extremely low ground current, not greater than
4µA under all load and temperature conditions, making it
efficient and ideal for keep-alive applications in devices
such as notebook computers.
The MIC5231 offers better than 2% initial accuracy and
low dropout (typically 150mV at 10mA output current). An
output capacitor is not required for stable operation,
decreasing cost and board space. Tiny ceramic chip
capacitors may be used to improve transient response.
The MIC5231 also features a control pin which allows the
regulator to be shut down when not required. Its shutdown-
state draws zero current, benefiting battery-powered appli-
cations.
The MIC5231 is available in fixed output voltages of 2.75V,
3.0V, 3.3V and 5V in the small SOT-23-5 IttyBitty
package. Contact Micrel for other voltage options.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
_________________________________________________________________________________________________________
Typical Application
IttyBitty is a registered trademark of Micrel, Inc.
November 2008
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
V
6V
IN
5V Linear Regulator Application
MIC5231-5.0YM5
IN
EN
GND
®
OUT
Features
• Extremely low quiescent current—only 0.65µA
• No output capacitor requirement
• Stable with ceramic or tantalum capacitors
• IttyBitty
• 10mA output drive
• Low 150mV at 10mA dropout voltage
• Tight load and line regulation
• Low temperature coefficient
• Logic-level enable input
Applications
• Real-time clocks
• SRAM backup
• Cellular telephones
• Laptop, notebook and palmtop computers
• Battery-powered equipment
• Bar code scanners
• SMPS post-regulator and DC-to-DC modules
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Micropower µCap LDO Regulator
®
V
5V
SOT-23-5 surface-mount package
OU T
MIC5231
M9999-110408-B

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MIC5231-2.75YM5 Summary of contents

Page 1

... Its shutdown- state draws zero current, benefiting battery-powered appli- cations. The MIC5231 is available in fixed output voltages of 2.75V, 3.0V, 3.3V and 5V in the small SOT-23-5 IttyBitty package. Contact Micrel for other voltage options. Data sheets and support documentation can be found on Micrel’ ...

Page 2

... Micrel, Inc. (1) Ordering Information Part Number Marking MIC5231-2.75BM5 LM2H MIC5231-2.75YM5 LM2H MIC5231-3.0BM5 LM30 MIC5231-3.0YM5 LM30 MIC5231-3.3BM5 LM33 MIC5231-3.3YM5 LM33 MIC5231-5.0BM5 LM50 MIC5231-5.0YM5 LM50 Notes: 1. Other voltages available. Contact factory for details. 2. Under bar ( ) symbol used to identify Pb-Free device may not be to scale ...

Page 3

... J (4) ≤ +125°C, unless noted. J Min Typ –2 –3 250 0.2 0.2 15 150 0.65 1.1 50 0.4 1 – ÷ θ . The θ of the MIC5231 is 130°C/W. J(max MIC5231 Max Units + ppm/°C 0. 300 mV 3 µA µ ...

Page 4

... Micrel, Inc. Typical Characteristics November 2008 4 MIC5231 M9999-110408-B ...

Page 5

... Micrel, Inc. Block Diagram IN EN MIC5231 November 2008 Bandgap Reference GND 5 MIC5231 OUT M9999-110408-B ...

Page 6

... If the device is being operated at +85°C, the maximum power dissipation allowed can easily be determined. Therefore, the device can only dissipate 170mW maximum. If the MIC5231 is powered off of a 12V source and the output voltage is 3.3V, the maximum output current can be calculated. Therefore, the device can source almost 20mA at an ambient of +85° ...

Page 7

... 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 November 2008 5-Pin SOT-23 (M5) indemnify Micrel for any damages resulting from such use or sale. © 2000 Micrel, Incorporated. 7 MIC5231 M9999-110408-B ...

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