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MIC2920A-5.0WS

Part # MIC2920A-5.0WS
Description IC REG LDO 5V 0.4A SOT223
Category IC
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

MIC2920A/29201/29202/29204 Micrel, Inc.
February 2005 1 M9999-021505
MIC2920A/29201/29202/29204
400mA Low-Dropout Voltage Regulator
Features
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
60V positive transients
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.
Applications
Battery-powered equipment
Cellular telephones
Laptop, notebook, and palmtop computers
PCMCIA V
CC
and V
PP
regulation/switching
Bar code scanners
Automotive electronics
SMPS post-regulators
Voltage reference
High-efficiency linear power supplies
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.
MIC2920A-xxBT
(TO-220)
MIC29201/29202BT
(TO-220-5)
MIC29201/29202BU
(TO-263-5)
5-Lead Package Pinouts
MIC29201 MIC29202
1) Error Adjust
2) Input Shutdown
3) Ground Ground
4) Output Input
5) Shutdown Output
Tab is Ground on SOT-223, TO-220, and TO-263 packages.
1 32
TAB
INPUT OUTPUT
GROUND
MIC2920A-x.xBS
(SOT-223)
Pin Configuration
1
2
3
4
8
7
6
5
IN PUT
NC
NC
E R R O R
OU TP UT
S E N S E
SH UTDOWN
GROUND
MIC29201-3.3BM (SOIC-8)
1
2
3
4
8
7
6
5
IN PUT
ADJUST
5V TAP
E R R O R
OU TP UT
S E N S E
SH UTDOWN
GROUND
MIC29204BM (SOIC-8)
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
TAB
5
4
3
2
1
TAB
3
OUT
2
GND
1
IN
TAB
5
4
3
2
1
MIC2920A/29201/29202/29204 Micrel, Inc.
M9999-021505 2 February 2005
Ordering Information
Part Number Voltage Junction Temp. Range Package
Standard Pb-Free
MIC2920A-3.3BS MIC2920A-3.3WS* 3.3V -40°C to +125°C SOT-223
MIC2920A-3.3BT MIC2920A-3.3WT* 3.3V -40°C to +125°C TO-220-3
MIC2920A-4.8BS MIC2920A-4.8WS* 4.85V -40°C to +125°C SOT-223
MIC2920A-4.8BT MIC2920A-4.8WT* 4.85V -40°C to +125°C TO-220-3
MIC2920A-5.0BS MIC2920A-5.0WS* 5.0V -40°C to +125°C SOT-223
MIC2920A-5.0BT MIC2920A-5.0WT* 5.0V -40°C to +125°C TO-220-3
MIC2920A-12BS MIC2920A-12WS* 12V -40°C to +125°C SOT-223
MIC2920A-12BT MIC2920A-12WT* 12V -40°C to +125°C TO-220-3
MIC29201-3.3BM MIC29201-3.3YM 3.3V -40°C to +125°C SO-8
MIC29201-3.3BT MIC29201-3.3WT* 3.3V -40°C to +125°C TO-220-5
MIC29201-3.3BU MIC29201-3.3WU* 3.3V -40°C to +125°C TO-263-5
MIC29201-4.8BT MIC29201-4.8WT* 4.85V -40°C to +125°C TO-220-5
MIC29201-4.8BU MIC29201-4.8WU* 4.85V -40°C to +125°C TO-263-5
MIC29201-5.0BT MIC29201-5.0WT* 5.0V -40°C to +125°C TO-220-5
MIC29201-5.0BU MIC29201-5.0WU* 5.0V -40°C to +125°C TO-263-5
MIC29201-12BT MIC29201-12WT* 12V -40°C to +125°C TO-220-5
MIC29201-12BU MIC29201-12WU* 12V -40°C to +125°C TO-263-5
MIC29202BT MIC29202WT* Adj -40°C to +125°C TO-220-5
MIC29202BU MIC29202WU* Adj -40°C to +125°C TO-263-5
MIC29204BM MIC29204YM 5V and Adj -40°C to +125°C SO-8
MIC29204BN MIC29204YN 5V and Adj -40°C to +125°C 8-pin PDIP
* Pb-Free RoHS compliant with high-melting solder exemption.
MIC2920A/29201/29202/29204 Micrel, Inc.
February 2005 3 M9999-021505
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) ............................260°C
Storage Temperature Range ...............................
–65°C to +150°C
If Military/Aerospace specified devices are required, contact your local
Micrel representative/distributor for availability and specifications.
Operating Ratings
Operating Input Supply Voltage ......................................2V
to 26V
Adjust Input Voltage (Notes 9 and 10) ......................–1.5V to +26V
Shutdown Input Voltage ..........................................
–0.3V to +30V
Error Comparator Output Voltage ............. –0.3V to +30VOperating
Junction Temperature Range ............................. –40°C to +125°C
Thermal Characteristics:
SOT−223 θ
JC
.............................................................. 15°C/W
TO-220
θ
JC
................................................................... 3°C/W
TO-263 θ
JC
................................................................... 3°C/W
8-Pin SOIC θ
JA
.............................................................Note 1
Across the full operating temperature, the minimum input voltage range for
full output current is 4.3V to 26V. Output will remain in-regulation at lower
output voltages and low current loads down to an input of 2V at 25°C.
Electrical Characteristics
Limits in standard typeface are for T
J
= 25°C and limits in boldface apply over the full operating temperature range. Unless otherwise
specified, V
IN
= V
OUT
+ 1V, I
L
= 1mA, C
L
= 10µF. Adjustable versions are set for an ouptu of 5V. The MIC29202 V
SHUTDOWN
≤ 0.7V. The
eight pin MIC29204 is configured with the Adjust pin tied to the 5V Tap, the Output is tied to Output Sense (V
OUT
= 5V), and V
SHUTDOWN
0.7V.
Symbol Parameter Conditions Min Typ Max Units
V
O
Output Voltage
Accuracy
Variation from factory trimmed V
OUT
-1
-2
1
2
%
1mA
≤ I
L
≤ 400mA, across temp. range -2.5 2.5
MIC2920A-12 and 29201-12 only -1.5
-3
1.5
3
1mA
≤ I
L
≤ 400mA, across temp. range -4 4
∆V
O
∆T
Output Voltage
Temperature Coef.
(Note 2) 20 100 ppm/°C
V
OUT
> 10V only 80 350
∆V
O
V
O
Line Regulation V
IN
= V
OUT
+ 1V to 26V 0.03 0.10
0.40
%
∆V
O
V
O
Load Regulation IL = 1 to 250mA (Note 3) 0.04 0.16
0.30
%
V
IN
- V
O
Dropout Voltage
(Note 4)
I
L
= 1mA
I
L
= 100mA
V
OUT
> 10V only
I
L
= 250mA
V
OUT
> 10V only
I
L
= 400mA
100
250
350
370
500
400
150
180
600
750
mV
I
GND
Ground Pin Current
(Note 5)
I
L
= 1mA
I
L
= 100mA
I
L
= 250mA
I
L
= 400mA
140
1.3
5
13
200
300
2
2.5
9
12
15
µA
mA
I
GNDDO
Ground Pin Current
at Dropout
(Note 5)
V
IN
= 0.5V less than designed V
OUT
(V
OUT
= 3.3V)
I
O
= 1mA
180 400 µA
I
LIMIT
Current Limit V
OUT
= 0V
(Note 6)
425 100
1200
mA
∆V
O
∆P
D
Thermal Regulation (Note 7) 0.05 0.2 %/W
e
n
Output Noise Voltage
(10Hz to 100kHz)
IL = 100mA
CL = 10
µF
CL = 100
µF
400
260
µV RMS
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