MIC5258-1.2YM5 TR Micrel Inc, MIC5258-1.2YM5 TR Datasheet

IC REG LDO 150MA 1.2V SOT23-5

MIC5258-1.2YM5 TR

Manufacturer Part Number
MIC5258-1.2YM5 TR
Description
IC REG LDO 150MA 1.2V SOT23-5
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC5258-1.2YM5 TR

Regulator Topology
Positive Fixed
Voltage - Output
1.2V
Voltage - Input
2.7 ~ 6 V
Number Of Regulators
1
Current - Output
150mA
Current - Limit (min)
160mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Primary Input Voltage
2.7V
Output Voltage
1.2V
No. Of Pins
5
Output Current
150mA
Voltage Regulator Case Style
SOT-23
Operating Temperature Range
-40°C To +125°C
Svhc
No SVHC (15-Dec-2010)
Output Voltage Fixed
1.2V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Dropout (typical)
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
576-2828-2
MIC5258-1.2YM5 TR
MIC5258-1.2YM5TR
MIC5258-1.2YM5TR
MIC5258
General Description
The MIC5258 is an efficient, precise CMOS voltage regula-
tor with power good output. The MIC5258 offers better than
3% initial accuracy, and constant ground current (typically
100µA)over load .
The MIC5258 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in hand-held wireless devices.
Key features include current limit, thermal shutdown, a push-
pull output for faster transient response, and an active clamp to
speed up device turnoff. Available in the IttyBitty™ SOT-23-5
package, the MIC5258 is a fixed 1.2V regulator.
Typical Application
April 2006
IttyBitty 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
Typical Application
* Other voltages available. Contact Micrel marketing for information.
Standard
MIC5258-1.2BM5
Marking
LN12
Low-Noise Regulator Application
Part Number
EN (pin 3) may be
connected directly
to IN (pin 1).
Shutdown
Enable
V
Pb-Free
MIC5258-1.2YM5 KN12
IN
EN
MIC5258-x.xBM5
1
2
3
1
47k
Features
• Power Good indicator
• Load independent, ultralow ground current: 100µA
• 150mA output current
• Current limiting
• Thermal shutdown
• Tight load and line regulation
• “Zero” off-mode current
• Stability with low-ESR capacitors
• Fast transient response
• TTL-Logic-controlled enable input
Applications
• Processor power-up sequencing
• Laptop, notebook, and palmtop computers
• PCMCIA V
150mA µCap CMOS LDO Regulator w/Power Good
5
4
Marking
V
PG
C
OUT
OUT
CC
and V
Voltage
1.2V
MIC5258
PP
regulation/switching
–40ºC to +125ºC
Junction Temp.
Range*
SOT-23-5
Package
Micrel, Inc.
MIC5258

Related parts for MIC5258-1.2YM5 TR

MIC5258-1.2YM5 TR Summary of contents

Page 1

... MIC5258 General Description The MIC5258 is an efficient, precise CMOS voltage regula- tor with power good output. The MIC5258 offers better than 3% initial accuracy, and constant ground current (typically 100µA)over load . The MIC5258 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices ...

Page 2

... Pin Description Pin Number Pin Name GND OUT MIC5258 EN GND LNxx KNxx OUT MIC5258-x.xBM5/YM5 Pin Function Supply Input Ground Enable/Shutdown (Input): CMOS compatible input. Logic high = enable; logic low = shutdown. Do not leave open. Power Good Output Regulator Output 2 Micrel, Inc. April 2006 ...

Page 3

... J Min Typical –3 –4 –0.3 3.5 0.45 110 110 = 150mA tbd OUT 160 350 1.6 0.01 0.01 150 10 89 0.02 0.01 1 Micrel, Inc Max Units 0.3 %/ µA 150 µA 150 µ 0 µA µA °C ° 0.1 V µ MIC5258 ...

Page 4

... IN EN Reference Voltage Thermal Sensor Under- voltage Lockout Overcurrent Dropout Detection Timing Diagram V 97% OUT V EN Min - Max 1-5ms V PG MIC5258 Startup/ Quickstart Shutdown Control FAULT Error Current Amplifier Amplifier ACTIVE SHUTDOWN Out of Regulation Detection Delay 4 PULL UP OUT PULL DOWN PG GND ...

Page 5

... I = 150mA 1.175 OUT 1.170 2.6 3.1 3.6 4.1 4.6 5.1 5.6 6.1 INPUT VOLTAGE (V) Enable Voltage vs. Input Voltage 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0 100µA OUT 0.6 2.6 3.1 3.6 4.1 4.6 5.1 5.6 6.1 INPUT VOLTAGE (V) MIC5258 ...

Page 6

... MIC5258 MIC5258 Enable Voltage vs. Temperature 1. 3.3V IN 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 - 100120140 TEMPERATURE (°C) Power Good Characteristic TIME (250µs/div) 6 Micrel, Inc. April 2006 ...

Page 7

... MIC5258 Applications Information Enable/Shutdown The MIC5258 comes with an active-high enable pin that al- lows the regulator to be disabled. Forcing the enable pin low disables the regulator and sends it into a “zero” off-mode-cur- rent state. In this state, current consumed by the regulator goes nearly to zero. Forcing the enable pin high enables the output voltage. This part is CMOS and the enable pin cannot be left fl ...

Page 8

... Regulator Thermals section of Micrel’s Designing with Low-Dropout Voltage Regulators handbook. Dual-Supply Operation When used in dual supply systems where the regulator load is returned to a negative supply, the output voltage must be diode clamped to ground. MIC5258 8 Micrel, Inc. April 2006 ...

Page 9

... Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify April 2006 SOT-23-5 ( (408) 474-1000 FAX WEB Micrel for any damages resulting from such use or sale. © 2001 Micrel Incorporated 9 http://www.micrel.com Micrel, Inc. MIC5258 ...

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