MIC29312WU Micrel Inc, MIC29312WU Datasheet

IC,VOLT REGULATOR,ADJUSTABLE,+1.24 TO +15V,BIPOLAR,SIP,5PIN,PLASTIC

MIC29312WU

Manufacturer Part Number

MIC29312WU

Description

IC,VOLT REGULATOR,ADJUSTABLE,+1.24 TO +15V,BIPOLAR,SIP,5PIN,PLASTIC

Manufacturer

Micrel Inc

Datasheet

1.MIC29312WU_TR.pdf (12 pages)

Specifications of MIC29312WU

Rohs Compliant

YES

Regulator Topology

Positive Adjustable

Voltage - Output

1.24 ~ 15 V

Voltage - Input

2.3 ~ 16 V

Voltage - Dropout (typical)

0.6V @ 3A

Number Of Regulators

Current - Output

Current - Limit (min)

Operating Temperature

0°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

TO-263-5, DÂ²Pak (5 leads + Tab), TO-263BA

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

576-1751-5
MIC29312WU

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General Description

The MIC29310 and MIC29312 are low cost versions of

MIC29300 family low-dropout (LDO) regulators. Manufac-

tured on Micrel’s proprietary Super beta PNP™ process,

the MIC29310/2 is a 3A LDO regulator with very low-dropout

voltage (600mV over the full load) and low ground current.

Along with a total accuracy of ±2% (over temperature, line

and load regulation) these regulators feature very fast tran-

sient recovery from input voltage surges and output load

current changes.

The MIC29310 is available in ﬁ xed 3.3V and 5V outputs

voltages; the MIC29312 has an adjustable output which can

be set by two external resistors to a voltage between 1.24V

to 15V. In addition, all versions are fully protected against

overcurrent faults, reversed input polarity, reversed lead

insertion, and overtemperature operation.

A TTL logic enable (EN) pin is available in the MIC29312 to

shutdown the regulator. When not used, the device can be set

to continuous operation by connecting EN to the input (IN).

The MIC29310/2 is available in the standard 3- and 5-pin

TO-220 and TO-263 packages with an operating junction

temperature range of 0°C to +125°C.

For applications requiring even lower dropout

voltage, input voltage greater than 16V, or an

error ﬂ ag, see the MIC29300/29301/29302/

29303.

Typical Application

November 2006

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

Fixed Regulator Conﬁ guration

MIC29310-x.x

GND

OUT

Features

• Low cost versions of MIC29300 family

• Fast transient response

• 3A current over full temperature range

• 600mV dropout voltage at full load

• Low ground current

• Accurate 1% guaranteed tolerance

• “Zero” current shutdown mode (MIC29312)

• Fixed voltage and adjustable versions

Applications

• Processor peripheral and I/O supplies

• PC add-in cards

• High-efﬁ ciency “green” computer systems

• High-efﬁ ciency linear power supplies

• High-efﬁ ciency switching supply post regulator

• Battery-powered equipment

Off

3A Fast-Response LDO Regulator

* For best performance, total series resistance

(R1 + R2) should be small enough to pass

the minimum regulator load current of 10mA.

Adjustable Regulator Conﬁ guration

MIC29310/29312

E N

OUT

MIC29312

GND

= 1.240

OUT

ADJ

R 2

R 1

+ 1

R1*

R2*

MIC29310/29312

OUT

Related parts for MIC29312WU

MIC29312WU Summary of contents

Page 1

General Description The MIC29310 and MIC29312 are low cost versions of MIC29300 family low-dropout (LDO) regulators. Manufac- tured on Micrel’s proprietary Super beta PNP™ process, the MIC29310 LDO regulator with very low-dropout voltage (600mV over the full ...

Page 2

... Part Number Standard RoHS Compliant MIC29310-3.3BT MIC29310-3.3WT MIC29310-3.3BU MIC29310-3.3WU MIC29310-5.0BT MIC29310-5.0WT MIC29310-5.0BU MIC29310-5.0WU MIC29312BT MIC29312WT MIC29312BU MIC29312WU Note: 1. RoHS compliant with “high-melting solder” exemption. Pin Conﬁ guration MIC29310-x.xBT/WT TO-220-3 (T) MIC29312-x.xBT/WT TO-220-5 (T) Pin Description Pin Number Pin Number MIC29310 MIC29312 ...

Page 3

Electrical Characteristics T = 25°C, bold values indicate 0°C ≤ Parameter Condition Output Voltage 10mA ≤ I Line Regulation I O Load Regulation V IN ΔV / ΔT Output Voltage Temperature Coefﬁ cient, Note 8 O ppm/°C Dropout ...

Page 4

Block Diagram IN Bias *EN On/Off Thermal Shut- down MIC29310/29312 MIC29310/29312 Reference 4 OUT O.V. I LIMIT 16V Feed- ADJ* back GND * MIC29312 only. November 2006 ...

Page 5

Typical Characteristics MIC29312 E N OUT 0.1µ OUT IN ADJ 49.9k GND 1% V load (not shown): Intel® Power Validato r OUT MIC29312 Load Transient Response Test Circuit MIC29312 Line Transient Response with 3A ...

Page 6

MIC2931x Ground Current vs. Input Voltage 2 10mA OUT 1.5 1.0 0.5 0 INPUT VOLTAGE (V) MIC2931x Ground Current vs. Temperature 6.0 5.0 4 750mA 3.0 OUT 2.0 1.0 0.0 ...

Page 7

Applications Information The MIC29310 and MIC29312 are high performance low-drop- out voltage regulators suitable for all moderate to high-current voltage regulator applications. Their 600mV of dropout voltage at full load make them especially valuable in battery powered systems and as ...

Page 8

A 10mA minimum load current is necessary for proper regulation. Adjustable Regulator Design Figure 4. Adjustable Regulator with Resistors The adjustable regulator version, MIC29312, allows program- ming the output voltage anywhere between 1.25V and the ...

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MIC29312WU Micrel Inc, MIC29312WU Datasheet

MIC29312WU

Specifications of MIC29312WU

Related parts for MIC29312WU

MIC29312WU Summary of contents

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