MIC69301/2/3
Single Supply V
IN
, Low V
IN
, Low V
OUT
, 3A
LDO
General Description
Features
The MIC69301/2/3 is the 3A output current member of the
•
Input voltage range: V
IN
: 1.65V to 5.5V
MIC69xxx family of high current, low voltage regulators,
•
Maximum dropout (V
IN
– V
OUT
) of 500mV
which support currents of 1A, 1.5A, 3A, and 5A. This
over temperature
family operates from a single low voltage supply, yet offers
•
Adjustable output voltage down to 0.5V
high precision and ultra low dropout of 500mV under worst
•
Stable with 10µF ceramic output capacitor
case conditions.
•
Excellent line and load regulation
The MIC69301/2/3 operates from an input voltage of 1.65V
•
Logic controlled shutdown
to 5.5V. It is designed to drive digital circuits requiring low
voltage at high currents (i.e., PLDs, DSP, microcontroller,
•
Thermal shutdown and current-limit protection
etc.). These regulators are available in adjustable and
•
Error flag output
fixed output voltages. The adjustable version can support
•
5-Pin TO-263
output voltages down to 0.5V.
•
5-Pin S-Pak package
The µCap design of the MIC69301/2/3 is optimized for
•
ePad SOIC-8 package
stability with low value, low-ESR ceramic output
capacitors.
•
12-Pin 4mm x 4mm MLF
TM
package (MIC69303 only)
Features of the MIC69301/2/3 include thermal shutdown
•
–40°C to +125°C junction temperature range
and current limit protection. Logic enable and error flag
pins are also available.
Applications
The MIC69301/2/3 is offered in TO-263, S-PAK and the
•
Point-of-load applications
ePad SOIC-8 packages. The MIC69303 is also available in
TM
a 12-Pin 4mm x 4mm MLF package. All packages have
•
Industrial power
an operating temperature range of –40°C to +125°C.
•
Sensitive RF applications
Datasheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
___________________________________________________________________________________________________________
Typical Application
*Error Flag Output MIC69303 only
Fixed 1.2V Regulator w/Error Flag Output
Adjustable Regulator
MLF and
MicroLeadFrame
are registered trademarks of Amkor Technologies, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
March 2011
M9999-032111-B
Micrel, Inc.
MIC69301/2/3
Ordering Information
Part Number
MIC69301-1.2YME
MIC69301-1.2WR
MIC69301-1.2WU
MIC69302WR
MIC69302WU
MIC69303YME
MIC69303YML
Nominal
Output Voltage
1.2V
1.2V
1.2V
Adj.
Adj.
Adj.
Adj.
Flag Output
Yes
Yes
Yes
No
No
Yes
Yes
Junction
Temperature Range
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
Package
8-Pin ePad SOIC
5-Pin S-PAK
5-Pin TO-263
5-Pin S-PAK
5-Pin TO-263
8-Pin ePad SOIC
12-Pin 4mm x 4mm MLF
TM
Lead Finish
Pb Free
RoHS Compliant
RoHS Compliant
RoHS Compliant
RoHS Compliant
Pb Free
Pb Free
Pin Configuration
5-Pin TO-263 (U)
(Adjustable Voltage)
5-Pin TO-263 (U)
(Fixed Voltage with Flag)
5-Pin S-PAK (R)
(Adjustable Voltage)
5-Pin S-PAK (R)
(Fixed Voltage with Flag)
8-Pin ePad SOIC (ME)
(Adjustable Voltage)
8-Pin ePad SOIC (ME)
(Fixed Voltage with Flag)
March 2011
2
M9999-032111-F
Micrel, Inc.
MIC69301/2/3
12-Pin 4mm x 4mm MLF
TM
(ML)
(Adjustable Voltage with Flag)
Pin Description
Pin
Number
(Fixed)
SPAK-5
TO-263-5
1
2
3, TAB
4
—
—
5
—
—
Pin
Number
(Adjustable)
SPAK-5
TO-263-5
1
2
3, TAB
4
—
5
—
—
—
Pin
Number
(Fixed)
ePad
SOIC-8
2
3,4
1
5,6
7
—
8
EP
—
Pin
Number
(Adjustable)
ePad
SOIC-8
2
3,4
1
5,6
—
7
8
EP
—
Pin
Number
(Adjustable)
ePad
4mm x 4mm
MLF
TM
3
4, 5, 6
1
7, 9
—
11
12
EP
2, 8, 10
Pin
Name
Pin Function
EN
IN
GND
OUT
SNS
ADJ
FLG
EP
NC
Enable (Input): CMOS compatible input. Logic
high = enable, logic low = shutdown. Do not
leave pin floating.
Input voltage which supplies current to the
output power device.
Ground (TAB is connected to ground on S-Pak
and TO-263).
Regulator Output.
Output voltage sense. Connect to output
voltage.
Adjustable regulator feedback input. Connect
to resistor voltage divider.
Error Flag (Output): Open collector output.
Active low indicates an output fault condition.
Exposed pad. Connect to GND.
No Connect. Not internally connected.
March 2011
3
M9999-032111-F
Micrel, Inc.
MIC69301/2/3
Absolute Maximum Ratings
(1)
Supply Input Voltage (V
IN
to GND) .................. –0.3V to +6V
Logic Input Voltage (V
EN
to GND). .......–0.3V to (V
IN
+ 0.3V)
Fault Flag(V
FLG
to GND ..................................... –0.3V to 6V
Storage Temperature (T
S
).........................–65°C to +125°C
Lead Temperature(T
S
) .............................................. 260°C
ESD
(4)
............................................................................. 2kV
Operating Ratings
(2)
Supply Voltage (V
IN
)....................................... 1.65V to 5.5V
Enable Input Voltage (V
EN
)..................................... 0V to V
IN
Junction Temperature (T
J
) ..................–40°C
≤
T
J
≤
+125°C
Power Dissipation (P
D
)........................... Internally Limited
(3)
Package Thermal Resistance
S-PAK-5 (θ
JC
).......................................................2°C/W
S-PAK-5 (θ
JA
).....................................................38°C/W
TO-263-5 (θ
JC
) .....................................................2°C/W
ePad SOIC-8 (θ
JA
) .............................................41°C/W
4x4 MLF-12L(θ
JA
) .............................................60°C/W
Electrical Characteristics
(4)
T
A
= 25°C with V
IN
= V
OUT
+ 1V; bold values indicate –40°C< T
J
< +125°C; I
OUT
= 10mA; C
OUT
= 10µF ceramic, unless noted.
Parameter
Power Input Supply
Input Voltage Range (V
IN
)
I
OUT
= 10mA
Ground Pin Current
Ground Pin Current in Shutdown
Output Voltage
Output Voltage (Fixed)
Load Regulation
Line Regulation
(5)
Reference (Adjustable)
Feedback Reference Voltage
(ADJ Pin)
Feedback Bias Current
Current Limit
Current Limit
Power Dropout Voltage
Dropout Voltage (V
IN
- V
OUT
)
(6)
Enable Input
Enable Input Threshold
Enable Pin Bias Current
Turn-on Time
Fault Output
Fault Threshold Voltage
Fault Hysteresis
Fault Output Low Voltage
I
FLG
= 250μA (sinking), V
EN
= 0V
% of V
OUT
below nominal output
(V
OUT
Falling)
7.5
10
2.0
150
14
%
%
mV
Regulator Enabled
Regulator Shutdown
V
EN
≤
0.2V ( Regulator Shutdown)
V
EN
≥
0.8V ( Regulator Enabled)
90% of typical V
OUT
; V
EN
= V
IN
0.0
7.0
10
150
0.8
0.57
0.2
V
V
µA
µA
µs
I
OUT
= 1.5A
I
OUT
= 3.0A
200
275
300
500
mV
mV
V
OUT
= 0V
3.3
5.2
A
(+/- 2.0%)
V
ADJ
= 0.5V
0.490
0.5
0.25
0.510
1.0
V
µA
I
OUT
= 10mA to 3A
V
IN
= V
OUT
+ 1.0V to 5.5V
-2.0
±0.3
0.2
0.3
2.0
%
%
%/V
I
OUT
= 1.5A
I
OUT
= 3.0A
V
EN
= 0V; V
IN
= 2.0V; V
OUT
= 0V
1.65
1.2
12
32
1
5.5
5
30
75
V
mA
mA
mA
µA
Test Conditions
Min
Typ
Max
Unit
March 2011
4
M9999-032111-F
Micrel, Inc.
MIC69301/2/3
Electrical Characteristics
(4)
(Continued)
T
A
= 25°C with V
IN
= V
OUT
+ 1V; bold values indicate –40°C< T
J
< +125°C; I
OUT
= 10mA; C
OUT
= 10µF ceramic, unless
noted.
Fault Leakage Current
Thermal Protection
Over-Temperature Shutdown
Over-Temperature Shutdown
Hysteresis
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation of any T
A
(ambient temperature) is (P
D(max)
= T
J(max)
– T
A
) /
θ
JA
. Exceeding the maximum allowable power
dissipation will result in excessive die temperature and the regulator will go into thermal shutdown.
4. Specification for packaged product only.
5. Minimum input for line regulation test is set to V
OUT
+ 1V relative to the highest output voltage.
6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V differential.
For outputs below 1.65V, dropout voltage is considered the input-to-output voltage differential with the minimum input voltage of 1.65V. Minimum
input operating voltage is 1.65V.
V
FLG
= 5.0V; V
EN
= 0V
T
J
Rising
0.05
165
10
μA
°C
°C
March 2011
5
M9999-032111-F
嵌入式系统
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