MIC39300-2.5WU Micrel Inc, MIC39300-2.5WU Datasheet

IC REG LDO 3A 1.0% 2.5V TO-263

MIC39300-2.5WU

Manufacturer Part Number
MIC39300-2.5WU
Description
IC REG LDO 3A 1.0% 2.5V TO-263
Manufacturer
Micrel Inc
Datasheets

Specifications of MIC39300-2.5WU

Regulator Topology
Positive Fixed
Voltage - Output
2.5V
Voltage - Input
Up to 16V
Voltage - Dropout (typical)
0.385V @ 3A
Number Of Regulators
1
Current - Output
3A (Min)
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
TO-263-3, D²Pak (3 leads + Tab), TO-263AA
Primary Input Voltage
16V
Output Voltage
2.5V
Dropout Voltage Vdo
400mV
No. Of Pins
3
Output Current
3A
Voltage Regulator Case Style
TO-263
Operating Temperature Range
-40°C To +125°C
Svhc
No SVHC
Output Voltage Fixed
2.5V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
576-3375-5
MIC39300-2.5WU

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Price
Part Number:
MIC39300-2.5WU
Manufacturer:
MICREL
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Part Number:
MIC39300-2.5WUTR
Manufacturer:
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General Description
The MIC39300 and MIC39301 are 3.0A low-dropout linear
voltage regulators that provide a low voltage, high-current
output with a minimum of external components. Utilizing
Micrel’s proprietary Super eta PNP
MIC39300/1 offers extremely low dropout (typically 400mV
at 3.0A) and low ground current (typically 36mA at 3.0A).
The MIC39300/1 is ideal for PC add-in cards that need to
convert from standard 3.3V to 2.5V or 2.5V to 1.8V. A
guaranteed maximum dropout voltage of 500mV over all
operating conditions allows the MIC39300/1 to provide 2.5V
from a supply as low as 3V, and 1.8V from a supply as low
as 2.5V. The MIC39300/1 also has fast transient response
for heavy switching applications. The device requires only
47 F of output capacitance to maintain stability and achieve
fast transient response.
The MIC39300/1 is fully protected with overcurrent limiting,
thermal shutdown, reversed-battery protection, reversed-
leakage protection, and reversed-lead insertion. The
MIC39301 offers a TTL-logic compatible enable pin and an
error flag that indicates under voltage and over current
conditions. Offered in fixed voltages, the MIC39300/1
comes in the TO-220 and TO-263 packages and is an
ideal upgrade to older, NPN-based linear voltage regulators.
For applications with input voltage 6V
or below, see MIC3730x LDOs.
Typical Application
Super eta PNP is a registered trademark of Micrel, Inc.
StrongARM is a trademark of Advanced RISC Machines, Ltd.
August 2005
MIC39300/39301
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
V
IN
MIC39300-2.5
IN
MIC39300
GND
OUT
47µF
®
pass element, the
V
2.5V
OUT
1
Features
• 3.0A minimum guaranteed output current
• 500mV maximum dropout voltage over temperature
• 1% initial accuracy
• Low ground current
• Current limiting and Thermal shutdown
• Reversed-battery protection
• Reversed-leakage protection
• Fast transient response
• TO-263 and TO-220 packaging
• TTL/CMOS compatible enable pin (MIC39301 only)
• Error flag output (MIC39301 only)
Applications
• LDO linear regulator for PC add-in cards
• High-efficiency linear power supplies
• SMPS post regulator
• Multimedia and PC processor supplies
• Low-voltage microcontrollers
• StrongARM™ processor supply
– Ideal for 3.0V to 2.5V conversion
– Ideal for 2.5V to 1.8V conversion
3A Low-Voltage Low-Dropout Regulator
SHUTDOWN
ENABLE
3.3V
V
MIC39300/39301
IN
MIC39301
MIC39301-2.5
EN
IN
100k
GND
FLG
OUT
47µF
M9999-082605-B
ERROR FLAG
OUTPUT
V
2.5V
OUT
Micrel, Inc.

Related parts for MIC39300-2.5WU

MIC39300-2.5WU Summary of contents

Page 1

... Micrel’s proprietary Super eta PNP MIC39300/1 offers extremely low dropout (typically 400mV at 3.0A) and low ground current (typically 36mA at 3.0A). The MIC39300/1 is ideal for PC add-in cards that need to convert from standard 3.3V to 2.5V or 2.5V to 1.8V. A guaranteed maximum dropout voltage of 500mV over all operating conditions allows the MIC39300/1 to provide 2 ...

Page 2

... MIC39300/39301 Ordering Information Part Number Standard RoHS Compliant* MIC39300-1.8BT MIC39300-1.8WT* MIC39300-1.8BU MIC39300-1.8WU* MIC39300-2.5BT MIC39300-2.5WT* MIC39300-2.5BU MIC39300-2.5WU* MIC39301-1.8BT MIC39301-1.8WT* MIC39301-1.8BU MIC39301-1.8WU* MIC39301-2.5BT MIC39301-2.5WT* MIC39301-2.5BU MIC39301-2.5WU* *ROHS compliant with high-melting solder exemption. Pin Configuration MIC39300-x.xBT TO-220-3 (T) MIC39301-x.xBT TO-220-5 (T) Pin Description Pin Number Pin Number ...

Page 3

... MIC39300/39301 Absolute Maximum Ratings Supply Voltage (V ) ..................................... –20V to +20V IN Enable Voltage (V ) .................................................. +20V EN Storage Temperature (T ) ....................... – +150 C S Lead Temperature (soldering, 5 sec.) ....................... 260 C (3) ESD Electrical Characteristics bold values indicate – Symbol Parameter V Output Voltage OUT Line Regulation Load Regulation Output Voltage Temp. Coefficient ...

Page 4

... MIC39300/39301 – V when V decreases to 99% of its nominal output voltage with OUT OUT voltage is the input-to-output voltage differential with the minimum input voltage being 2.5V. Minimum input operating voltage is 2.5V the quiescent current GND IN GND 8. V 0.8V, V 8V, and OUT 9. For a 1.8V device ...

Page 5

... MIC39300/39301 Typical Characteristics Power Supply vs. Ripple Rejection 2.5V 20 OUT OUT LOAD 0 FREQUENCY (Hz) Dropout Voltage vs. Temperature 600 500 V = 2.5V 400 OUT 300 V = 1.8V OUT 200 100 I = 3.0A LOAD 0 -40 - 100 120 TEMPERATURE ( C) Ground Current vs. Supply Voltage 100mA LOAD 10mA LOAD SUPPLY VOLTAGE (V) Ground Current vs ...

Page 6

... MIC39300/39301 Enable Current vs. Temperature 2.60 2.58 2.56 2.54 2.52 typical 2.5V device 2.50 2.48 2.46 2. 10mA LOAD 2.42 2.40 -40 - 100 120 TEMPERATURE ( C) Flag-Low Voltage vs. Temperature 250 FLAG-LOW 200 VOLTAGE 150 V = 2.5V 100 22k PULL- -40 - 100120140 TEMPERATURE ( C) M9999-082605-A Error Flag Pull-Up Resistor ...

Page 7

... MIC39300/39301 Functional Characteristics Line Transient Response 5V 3.3V TIME (100 s/div.) Load Transient Response 3A TIME (500 s/div.) August 2005 V = 2.5V OUT I = 10mA OUT 2.5V OUT C = 100 F OUT 100mA 7 Micrel, Inc. Load Transient Response 2.5V OUT OUT 3A 10mA TIME (500 s/div.) ...

Page 8

... MIC39300/39301 Functional Diagram IN FLAG* EN* M9999-082605-A 1.180V 1.240V Ref. Thermal Shut- down * MIC39301 only 8 Micrel, Inc. OUT O.V. I LIMIT 18V GND August 2005 ...

Page 9

... Refer to “Application Note 9” for further details and examples on thermal design and heat sink specification. Output Capacitor The MIC39300/1 requires an output capacitor to maintain stability and improve transient response. Proper capacitor selection is important to ensure proper operation. The MIC39300/1 output capacitor selection is dependent upon the ESR (equivalent series resistance) of the output capacitor to maintain stability ...

Page 10

... MIC39300/39301 Minimum Load Current The MIC39300/1 regulator is specified between finite loads. If the output current is too small, leakage currents dominate and the output voltage rises. A 10mA minimum load current is necessary for proper regulation. Error Flag The MIC39301 version features an error flag circuit which monitors the output voltage and signals an error condition when the voltage drops 5% below the nominal output voltage ...

Page 11

... MIC39300/39301 Package Information 0.108 0.005 (2.74 0.13) 0.818 0.005 (20.78 0.13) 0.050 0.003 (1.27 .08) 0.108 0.005 (2.74 0.13) 0.067 0.005 (1.70 0.127) 0.268 REF (6.81 REF) August 2005 0.151 D 0.005 (3.84 D 0.13) 0.176 0.005 (4.47 0.13) 0.410 0.010 (10.41 0.25) 0.590 0.005 (14 ...

Page 12

... MIC39300/39301 0.065 0.010 20 2 0.100 BSC DIM. = INCH 0.065 0.010 20 2 0.067 0.005 DIM. = INCH 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 Micrel for its use. ...

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