MIC29204 MICREL [Micrel Semiconductor], MIC29204 Datasheet

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MIC29204

Manufacturer Part Number
MIC29204
Description
400mA Low-Dropout Voltage Regulator
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet

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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
1)
2)
3)
4)
5)
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
SHUTDOWN
MIC29201
Error
Input
Ground
Output
Shutdown
GROUND
GROUND
MIC29201-3.3BM (SOIC-8)
OUTPUT
OUTPUT
S E N S E
S E N S E
MIC29204BM (SOIC-8)
1
2
3
4
1
2
3
4
MIC29202
Adjust
Shutdown
Ground
Input
Output
8
7
6
5
8
7
6
5
INPUT
A D JUST
5V TAP
E R R O R
INPUT
NC
NC
E R R O R
MIC29201/29202BU
MIC2920A-x.xBS
INPUT
1
(TO-263-5)
1
(SOT-223)
GROUND
2
TAB
2
TAB
3
OUTPUT
Tab is Ground on SOT-223, TO-220, and TO-263 packages.
1
4
3
Features
Applications
5
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
CC
MIC2920A-xxBT
60V positive transients
and V
(TO-220)
IN
1
GND
TAB
PP
2
regulation/switching
OU T
3
MIC29201/29202BT
1
(TO-220-5)
2
TAB
M9999-021505
3
Micrel, Inc.
4
5

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MIC29204 Summary of contents

Page 1

... 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 Confi ...

Page 2

... 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. M9999-021505 Voltage Junction Temp. Range 3.3V -40°C to +125°C 3.3V -40°C to +125°C 4.85V -40°C to +125°C 4.85V -40°C to +125°C 5.0V -40° ...

Page 3

... Unless otherwise J specified 1V 1mA OUT L L eight pin MIC29204 is configured with the Adjust pin tied to the 5V Tap, the Output is tied to Output Sense (V 0.7V. Symbol Parameter Conditions V Output Voltage Variation from factory trimmed V O Accuracy 1mA ≤ ...

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

... P dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. The junction to ambient thermal resistance of the MIC29204BM is 160°C/W mounted board. Note 2: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. ...

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

... Since the MIC29202/29204 typically draws 110µ load with SHUTDOWN open-circuited, this is a negligible addition. The MIC29204 may be pin-strapped for 5V using the internal voltage divider by tying Pin 1 (output) to Pin 2 (sense) and Pin 7 (Adjust) to Pin 6 (V Tap). ...

Page 9

... GND ADJ Minimum Input-Output Voltage ranges from 40mV to 400mV, depending on load current Figure 4. MIC29204 Wide Input Voltage Range Current Limiter February 2005 Automotive Applications The MIC2920A is ideally suited for automotive applications , since it 1 for a variety of reasons. It will operate over a wide range of input voltages with very low dropout voltages (40mV at light loads), and very low quiescent currents (100µ ...

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 ...

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