MIC29201-3.3BU Micrel Inc, MIC29201-3.3BU Datasheet

MIC29201-3.3BU

Manufacturer Part Number

MIC29201-3.3BU

Description

IC REG LDO 400MA 3.3V TO-263-5

Manufacturer

Micrel Inc

Datasheet

1.MIC2920A-3.3WS_TR.pdf (12 pages)

Specifications of MIC29201-3.3BU

Regulator Topology

Positive Fixed

Voltage - Output

3.3V

Voltage - Input

Up to 26V

Voltage - Dropout (typical)

0.4V @ 400mA

Number Of Regulators

Current - Output

400mA

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

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

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Current - Limit (min)

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MIC2920A/29201/29202/29204

General Description

The MIC2920A family are “bulletproof,” efﬁcient voltage regu-

lators with very low dropout voltage (typically 40mV at light

loads and 370mV at 250mA), and very low quiescent current

(140µA typical). The quiescent current of the MIC2920A in-

creases only slightly in dropout, prolonging battery life. Key

MIC2920A features include protection against reversed bat-

tery, fold-back current limiting, and automotive “load dump”

protection (60V positive transient).

The MIC2920 is available in several conﬁgurations. The

MIC2920A-x.x devices are three pin ﬁxed voltage regulators

available in 3.3V, 4.85V, 5V, and 12V outputs. The MIC29201

is a ﬁxed regulator offering a logic compatible ON/OFF (shut-

down) input and an error ﬂag output. This ﬂag may also be

used as a power-on reset signal. A logic-compatible shutdown

input is provided on the adjustable MIC29202 which allows

the regulator to be switched on and off. The MIC29204 8-pin

SOIC adjustable regulator includes both shutdown and error

ﬂag pins and may be pin-strapped for 5V output or programmed

from 1.24V to 26V using two external resistors.

Pin Conﬁguration

February 2005

5-Lead Package Pinouts

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

SHUTDOWN

MIC29201

Error

Input

Ground

Output

Shutdown

GROUND

MIC29201-3.3BM (SOIC-8)

OUTPUT

S E N S E

MIC29204BM (SOIC-8)

MIC29202

Adjust

Shutdown

Ground

Input

Output

INPUT

A D JUST

5V TAP

E R R O R

INPUT

E R R O R

MIC29201/29202BU

MIC2920A-x.xBS

INPUT

(TO-263-5)

(SOT-223)

GROUND

TAB

OUTPUT

Tab is Ground on SOT-223, TO-220, and TO-263 packages.

Features

•

Applications

•

MIC2920A/29201/29202/29204

High output voltage accuracy

Guaranteed 400mA output

Low quiescent current

Low dropout voltage

Extremely tight load and line regulation

Very low temperature coefﬁcient

Current and thermal limiting

Input withstands –20V reverse battery and

Error ﬂag warns of output dropout

Logic-controlled electronic shutdown

Output programmable from 1.24V to 26V

(MIC29202/MIC29204)

Available in TO-220-3, TO-220-5, and surface-mount

TO-263-5, SOT-223, and SO-8 packages.

Battery-powered equipment

Cellular telephones

Laptop, notebook, and palmtop computers

PCMCIA V

Bar code scanners

Automotive electronics

SMPS post-regulators

Voltage reference

High-efﬁciency linear power supplies

400mA Low-Dropout Voltage Regulator

MIC2920A-xxBT

60V positive transients

and V

(TO-220)

GND

TAB

regulation/switching

OU T

MIC29201/29202BT

(TO-220-5)

TAB

M9999-021505

Micrel, Inc.

Related parts for MIC29201-3.3BU

MIC29201-3.3BU Summary of contents

Page 1

... The MIC2920 is available in several conﬁgurations. The MIC2920A-x.x devices are three pin ﬁxed voltage regulators available in 3.3V, 4.85V, 5V, and 12V outputs. The MIC29201 is a ﬁxed regulator offering a logic compatible ON/OFF (shut- down) input and an error ﬂag output. This ﬂag may also be used as a power-on reset signal ...

Page 2

... MIC2920A-3.3BS MIC2920A-3.3WS* MIC2920A-3.3BT MIC2920A-3.3WT* MIC2920A-4.8BS MIC2920A-4.8WS* MIC2920A-4.8BT MIC2920A-4.8WT* MIC2920A-5.0BS MIC2920A-5.0WS* MIC2920A-5.0BT MIC2920A-5.0WT* MIC2920A-12BS MIC2920A-12WS* MIC2920A-12BT MIC2920A-12WT* MIC29201-3.3BM MIC29201-3.3YM MIC29201-3.3BT MIC29201-3.3WT* MIC29201-3.3BU MIC29201-3.3WU* MIC29201-4.8BT MIC29201-4.8WT* MIC29201-4.8BU MIC29201-4.8WU* MIC29201-5.0BT MIC29201-5.0WT* MIC29201-5.0BU MIC29201-5.0WU* MIC29201-12BT MIC29201-12WT* MIC29201-12BU MIC29201-12WU* MIC29202BT MIC29202WT* MIC29202BU MIC29202WU* MIC29204BM MIC29204YM MIC29204BN MIC29204YN * Pb-Free RoHS compliant with high-melting solder exemption ...

Page 3

MIC2920A/29201/29202/29204 Absolute Maximum Ratings Input Supply Voltage .................................................–20V to +60V Adjust Input Voltage (Notes 9 and 10) ......................–1.5V to +26V Power Dissipation ................................... Internally Limited, Note 1 Operating Junction Temperature Range ............. –40°C to +125°C Lead Temperature (Soldering, 5 seconds) ...

Page 4

... Output Low V = 4.5V IN Voltage I = 250µA OL Upper Threshold (Note 9) Voltage Lower Threshold (Note 9) Voltage Hysteresis (Note 9) Shutdown Input MIC29201, MIC29202, MIC29204 Input Logic Voltage Low (ON) High (OFF) Shutdown Pin V = 2.4V SHUTDOWN Input Current V = 26V SHUTDOWN Regulator Output (Note 10) Current in Shutdown M9999-021505 Min Typ 1 ...

Page 5

... V TAP R28 Q22 Q21 Q23 R15 100 kΩ R14 350 kΩ R16 R17 30 kΩ 10 Ω Q29 Q19 Q28 R21 8 Ω Q30 Q31 SHDN R23 60 kΩ R22 R24 150 kΩ 50 kΩ NNE MIC2920A-xx AND MIC29201- Micrel, Inc. = (R1 + R2)/R2. M9999-021505 ...

Page 6

MIC2920A/29201/29202/29204 Typical Characteristics Dropout V oltage vs . Output C urrent 500 400 300 200 100 0 0 100 200 300 400 OUTPUT CURRENT (mA) G round C urrent vs . Output C urrent 0 ...

Page 7

MIC2920A/29201/29202/29204 MIC 29201/2 S hutdown C urrent emperaure 125 100 -60 - 120 150 TEMPERATURE (°C) MIC 29202 A ...

Page 8

... Pin 1 (output) to Pin 2 (sense) and Pin 7 (Adjust) to Pin 6 (V Tap). Conﬁguring the MIC29201-3.3BM For the MIC29201-3.3BM, the output (Pin 1) and sense pin (pin 2), must be connected to ensure proper operation. They are not connected internally. ...

Page 9

MIC2920A/29201/29202/29204 tor from 1µF to 220µF only decreases the noise from 430µV to 160µV for a 100kHz bandwidth at 5V output. Noise can RMS be reduced fourfold by a bypass capacitor across R reduces the high frequency gain from 4 ...

Page 10

MIC2920A/29201/29202/29204 Package Information 3.15 (0.124) 2.90 (0.114 2.41 (0.095) 2.21 (0.087) 4.7 (0.185) 4.5 (0.177) 0.10 (0.004) 0.02 (0.0008) M9999-021505 8-Pin SOIC ( 3.71 (0.146) 7.49 (0.295) 6.71 (0.264) 3.30 (0.130) 1.04 (0.041) 0.85 (0.033) DIMENSIONS: ...

Page 11

MIC2920A/29201/29202/29204 February 2005 3-Lead TO-220 (T) 5-Lead TO-220 (T) 11 Micrel, Inc. M9999-021505 ...

Page 12

... MIC2920A/29201/29202/29204 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 Micrel for its use. Micrel reserves the right to change circuitry and speciﬁcations at any time without notiﬁcation to the customer. ...

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