mic39151 Micrel Semiconductor, mic39151 Datasheet

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mic39151

Manufacturer Part Number
mic39151
Description
Mic39150/mic39151 1.5a Low-voltage Low-dropout Regulator
Manufacturer
Micrel Semiconductor
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
mic39151-1.8BU
Manufacturer:
MICREL
Quantity:
138
Part Number:
mic39151-2.5BU
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Part Number:
mic39151-2.5BU-TR
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Part Number:
mic39151-2.5WU
Manufacturer:
Micrel Inc
Quantity:
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Part Number:
mic39151-2.5WU
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
General Description
The MIC39150 and MIC39151 are 1.5A 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
MIC39150/1 offers extremely low dropout (typically 375mV
at 1.5A) and low ground current (typically 17mA at 1.5A).
The MIC39150/1 is ideal for PC add-in cards that need to
convert from 3.3V to 2.5V or 2.5V to 1.8V. A guaranteed
maximum dropout voltage of 500mV over all operating
conditions allows the MIC39150/1 to provide 2.5V from a
supply as low as 3V or 1.8V from a supply as low as 2.3V.
The MIC39150/1 also has fast transient response for
heavy switching applications. This device requires only
10µF of output capacitance to maintain stability and
achieve fast transient response.
The MIC39150/1 is fully protected with overcurrent limiting,
thermal shutdown, reversed-battery protection, reversed-
lead insertion, and reverse-leakage protection. The
MIC39151 offers a TTL-logic compatible enable pin and an
error flag that indicates undervoltage and overcurrent
conditions. Offered in fixed voltages of 2.5V, 1.8V and
1.65V, the MIC39150/1 comes in the TO-220 and TO-263
packages and is an ideal upgrade to older, NPN-based
linear voltage regulators.
For applications requiring input voltage greater than 16V or
automotive load dump protection, see the MIC29150/1/2/3
family.
Typical Application
Super ßeta PNP is a trademark of Micrel, Inc.
StrongARM is a trademark of Advanced RSIC Machines, Ltd.
May 2006
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
3.3V
V
IN
MIC39150-2.5
IN
GND
MIC39150
OUT
10µF
tantalum
V
2.5V
O U T
Features
• 1.5A minimum guaranteed output current
• 500mV maximum dropout voltage over temperature
• 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 packaging
• TTL/CMOS compatible enable pin (MIC39151 only)
• Error flag output (MIC39151 only)
Applications
• Low-voltage digital ICs
• LDO linear regulator for PC add-in cards
• High-efficiency linear power supplies
• SMPS post regulator
• Low-voltage microcontrollers
• StrongARM™ processor supply
408
– Ideal for 3.0V to 2.5V conversion
– Ideal for 2.5 to 1.8V or 1.65V conversion
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
SH U T D OW N
E N A B L E
1.5A Low-Voltage Low-Dropout
3.3V
V
MIC39150/39151
IN
Regulator
MIC39151-2.5
MIC39151
E N
IN
100k
GND
F L G
OUT
10µF
tantalum
E R R O R F L A G
O U T PU T
(408) 955-1690
M9999-053106
V
2.5V
OU T

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mic39151 Summary of contents

Page 1

... The MIC39150/1 is fully protected with overcurrent limiting, thermal shutdown, reversed-battery protection, reversed- lead insertion, and reverse-leakage protection. The MIC39151 offers a TTL-logic compatible enable pin and an error flag that indicates undervoltage and overcurrent conditions. Offered in fixed voltages of 2.5V, 1.8V and 1.65V, the MIC39150/1 comes in the TO-220 and TO-263 packages and is an ideal upgrade to older, NPN-based linear voltage regulators ...

Page 2

... MIC39150-2.5BU MIC39150-2.5WU MIC39151-1.65BT MIC39151-1.65WT MIC39151-1.65BU MIC39151-1.65WU MIC39151-1.8BT MIC39151-1.8WT MIC39151-1.8BU MIC39151-1.8WU MIC39151-2.5BT MIC39151-2.5WT MIC39151-2.5BU MIC39151-2.5WU Note: * RoHS compliant with ‘high-melting solder’ exemption. May 2006 Junction Voltage Temp. Range 1.65V – ...

Page 3

... Ground: Ground pin and TAB are internally connected. OUT Regulator Output. FLG Error Flag (Output): Open-collector output. Active low indicates an output fault condition. 3 MIC39150/39151 3 OUT 2 GND 1 IN MIC39150-x.xBU/WU TO-263-3 ( OUT 3 GND MIC39151-x.xBU/WU TO-263-5 (U) M9999-053106 (408) 955-1690 ...

Page 4

... OUT(lim) I Minimum Load Current OUT(min) Enable Input (MIC39151) V Enable Input Voltage EN I Enable Input Current IN I Shutdown Output Voltage OUT(shdn) Flag Output (MIC39151) I Output Leakage Current FLG(leak) V Output Low Voltage FLG(do) V Low Threshold FLG High Threshold Hysteresis May 2006 (1) Operating Ratings ...

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 Power Supply Rejection Ratio 3. 2.5V 50 OUT 1.5A LOAD C = 10µF 10 OUT 1E+1 1E+2 1E+3 1E+4 1E+5 ...

Page 7

Micrel, Inc. Error Flag Pull-Up Resistor FLAG HIGH (OK FLAG LOW 1 (FAULT) 0 0.01 0 100 100010000 RESISTANCE (k ) May 2006 7 MIC39150/39151 M9999-053106 (408) 955-1690 ...

Page 8

... Micrel, Inc. Functional Characteristics Functional Diagram IN FLAG* EN* May 2006 1.180V 1.240V Ref. Thermal Shut- down * MIC39151 only 8 MIC39150/39151 OUT O.V. I LIMIT 18V GND M9999-053106 (408) 955-1690 ...

Page 9

Micrel, Inc. Application Information The MIC39150 high-performance low-dropout voltage regulator suitable for moderate to high-current voltage regulator applications. Its 500mV dropout voltage at full load and overtemperature makes it especially valuable in battery-powered systems and as high-efficiency noise ...

Page 10

... The flag pin can be tied directly to pin 4, the output pin. Enable Input The MIC39151 version features an enable input for on/off control of the device. Its shutdown state draws “zero” current (only microamperes of leakage). The enable input is TTL/CMOS compatible for simple logic interface, but can be connected 20V. When enabled, it draws approximately 15µ ...

Page 11

Micrel, Inc. Package Information May 2006 3-Pin TO-220 (T) 5-Pin TO-220 (T) 11 MIC39150/39151 M9999-053106 (408) 955-1690 ...

Page 12

Micrel, Inc. 4 θ May 2006 3-Pin TO-263 (U) 1 θ 2 θ 1 θ 1 θ 3 θ 2 θ 3 θ 4 θ 5-Pin TO-263 (U) 12 MIC39150/39151 M9999-053106 (408) 955-1690 ...

Page 13

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 ...

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