MIC39501 Micrel Semiconductor, MIC39501 Datasheet

MIC39501

Manufacturer Part Number

MIC39501

Description

Mic39500/mic39501 5a Low-voltage Low-dropout Regulator

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC39501.pdf (10 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MIC39501

Manufacturer:

MIC

Quantity:

519

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MIC39501-1.8WUTR

Manufacturer:

Micrel

Quantity:

268

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MIC39501-2.5BT

Manufacturer:

MIC

Quantity:

253

Company:

Meier Automation Equipment Co., Limited

Part Number:

MIC39501-2.5WU

Manufacturer:

MICREL/麦瑞

Quantity:

20 000

Current page: 1 of 10
Download datasheet (2Mb)

General Description

The MIC39500 and MIC39501 are 5A low-dropout linear

voltage regulators that provide a low-voltage, high-current

output with a minimum of external components. Utilizing

Micrel’s proprietary Super βeta PNP™ pass element, the

MIC39500/1 offers extremely low dropout (typically 400mV

at 5A) and low ground current (typically 70mA at 5A).

The MIC39500/1 is ideal for PC Add-In cards that need to

convert from standard 2.5V or 3.3V, down to new, lower

core voltages. A guaranteed maximum dropout voltage of

500mV over all operating conditions allows the MIC39500/1

to provide 2.5V from a supply as low as 3V or 1.8V from

2.5V. The MIC39500/1 also has fast transient response, for

heavy switching applications. The device requires only 47µF

of output capacitance to maintain stability and achieve fast

transient response

The MIC39500/1 is fully protected with overcurrent limiting,

thermal shutdown, reversed-battery protection, reversed-

lead insertion protection, and reversed-leakage protection.

The MIC39501 offers a TTL-logic-compatible enable pin and

an error ﬂ ag that indicates undervoltage and overcurrent

conditions. Offered in a ﬁ xed voltages, 1.8V and 2.5V, the

MIC39500/1 comes in the TO-220 and TO-263 packages

and an ideal upgrade to older, NPN-based linear voltage

regulators.

For applications requiring input voltage

greater than 16V, see the

MIC29500/1/2/3 family. For applications

with input voltage 6V or below, see

MIC3750x LDOs.

Typical Application

StrongARM is a trademark of Advanced RISC Machines, Ltd.

August 2005

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

3.3V

1.0µF

MIC39500

MIC39500-2.5

GND

OUT

47µF

2.5V

OUT

Features

• 5A minimum guaranteed output current

• 400mV dropout voltage

• 1% initial accuracy

• Low ground current

• Current limiting and thermal shutdown

• Reversed-battery and reversed-lead insertion protection

• Reversed-leakage protection

• Fast transient response

• TO-263 and TO-220 packages

• TTL/CMOS compatible enable pin (MIC39501 only)

• Error ﬂ ag output (MIC39501 only)

• Ceramic capacitor stable (See Application Information)

Applications

• Low Voltage Digital ICs

• LDO linear regulator for PC add-in cards

• High-efﬁ ciency linear power supplies

• SMPS post regulator

• Multimedia and PC processor supplies

• Low-voltage microcontrollers

• StrongARM™ processor supply

5A µCap Low-Voltage Low-Dropout Regulator

Ideal for 3.0V to 2.5V conversion

Ideal for 2.5V to 1.8V conversion

Shutdown

3.3V

MIC39500/39501

Enable

1.0µF

MIC39501-2.5

MIC39501

GND

100KΩ

OUT

FLG

47µF

ERROR

FLAG OUTPUT

2.5V

OUT

M9999-082605-B

Related parts for MIC39501

MIC39501 Summary of contents

Page 1

... General Description The MIC39500 and MIC39501 are 5A low-dropout linear voltage regulators that provide a low-voltage, high-current output with a minimum of external components. Utilizing Micrel’s proprietary Super βeta PNP™ pass element, the MIC39500/1 offers extremely low dropout (typically 400mV at 5A) and low ground current (typically 70mA at 5A). ...

Page 2

... Pin Number Pin Number Pin Number Pin Number Pin Number Pin Number Pin Number Pin Number Pin Number Pin Name Pin Name Pin Name Pin Name Pin Name MIC39500 MIC39500 MIC39500 MIC39501 MIC39501 MIC39501 ...

Page 3

... EN I Enable Input Current Enable Input Current Enable Input Current IN I Shutdown Output Current Shutdown Output Current OUT(shdn) Flag Output (MIC39501) I Output Leakage Current Output Leakage Current Output Leakage Current FLG(leak) V Output Low Voltage Output Low Voltage Output Low Voltage FLG(do) ...

Page 4

MIC39500/39501 Typical Characteristics P ower S upply R ejection R atio 3. 2.5V OUT LOAD 47µF T ant OUT ...

Page 5

MIC39500/39501 E rror F lag P ull- tor 6 F lag_HIG H ( lag_LOW (F AULT ) 0 RESISTANCE (kΩ) August 2005 E nable C urrent vs . Temperature 7 ...

Page 6

... MIC39500/39501 Functional Diagram IN FLAG* EN* M9999-082605-B 1.180V 1.240V Ref. Thermal Shut- down * MIC39501 only 6 Micrel OUT O.V. I LIMIT 18V GND August 2005 ...

Page 7

MIC39500/39501 Applications Information The MIC39500 high-performance low-dropout voltage regulator suitable for moderate to high-current voltage regula- tor applications. Its 400mV dropout voltage at full load makes it especially valuable in battery-powered systems and as a high-efﬁ ciency noise ...

Page 8

... M9999-082605-B Error Flag The MIC39501 version features an error ﬂ ag circuit which monitors the output voltage and signals an error condition when the voltage 5% below the nominal output voltage. The error ﬂ open-collector output that can sink 10mA during a fault condition ...

Page 9

MIC39500/39501 Package Information August 2005 3-Lead TO-263 (U) 3-Lead TO-220 (T) 9 Micrel M9999-082605-B ...

Page 10

MIC39500/39501 4 θ MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by ...

Related keywords

MIC39501 datasheet
MIC39501 data sheet
MIC39501 pdf datasheet
MIC39501 component
MIC39501 part
MIC39501 distributor
MIC39501 RoHS
MIC39501 datasheet download