MIC5363/4
High-PSRR, 300mA, µCap LDO
in 1.2mm
×
1.2mm Thin MLF
®
General Description
The MIC5363/4 is an advanced, 300mA LDO ideal for
powering general purpose portable devices requiring a
high power supply rejection ratio (PSRR). The MIC5363/4
integrates a high-performance, 300mA LDO into a tiny
1.2mm x 1.2mm Thin MLF
®
package.
The MIC5363/4 is designed to reject input noise and
provide a low output noise regulator with fast transient
response to respond to any load change quickly. The
MIC5364 also incorporates an active discharge feature
that switches a 30Ω NFET from VOUT to GND to
discharge output capacitors when the part is disabled.
The MIC5363/4 is available in fixed output voltages in
lead-free (RoHS-compliant) 6-pin 1.2mm x 1.2mm Thin
MLF
®
leadless package.
Data sheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
Features
•
•
•
•
•
•
•
•
•
•
•
2.5V to 5.5V input voltage range
300mA output
High output accuracy : ± 2%
Low quiescent current : typically 38µA
Stable with 1µF ceramic capacitors
High PSRR (70dB @1kHz)
Low dropout voltage : 225mV at 300mA
Thermal-shutdown protection
Current-limit protection
Active Output discharge circuit : MIC5364
6-pin 1.2mm x 1.2mm Thin MLF
®
package
Applications
•
•
•
•
Mobile phones
GPS, PMP, and DSC
Battery-powered electronics
Noise Sensitive Applications
_________________________________________________________________________________________________________________________
Typical Application
Camera DSP Power Supply
MLF and
MicroLead
Frame are registered trademarks of Amkor Technology, 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
April 2012
M9999-040412-A
Micrel, Inc.
MIC5363/4
Ordering Information
Part Number
MIC5363-1.2YMT
MIC5363-2.8YMT
MIC5363-3.3YMT
MIC5364-1.2YMT
(4)
MIC5364-2.8YMT
(4)
MIC5364-3.3YMT
(4)
Notes:
1.
2.
3.
4.
Other voltages available. Contact Micrel for details.
“
▲
” = Pin 1 identifier.
Green, RoHS-compliant. Level finish is NiPdAu. Mold compound is Halogen free.
MIC5364 offers Auto-Discharge function.
Marking
Code
34
3G
3S
44
4X
4S
Voltage
(1)
1.2
2.8
3.3
1.2
2.8
3.3
Junction
Temperature Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Package
(2)
6-Pin 1.2 mm
×
1.2mm Thin MLF
®
6-Pin 1.2 mm
×
1.2mm Thin MLF
®
6-Pin 1.2 mm
×
1.2mm Thin MLF
®
6-Pin 1.2 mm
×
1.2mm Thin MLF
®
6-Pin 1.2 mm
×
1.2mm Thin MLF
®
6-Pin 1.2 mm
×
1.2mm Thin MLF
®
Lead Finish
(3)
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pin Configuration
6-Pin 1.2mm
×
1.2mm Thin MLF
®
(MT)
Pin Description
Pin Number
1
2
3
4
5
6
EP
Pin Name
N/C
N/C
GND
VIN
VOUT
EN
ePad
Pin Function
Not internally connected.
Not internally connected.
Ground.
Supply Input. Decouple with 1µF ceramic capacitor.
Output Voltage. Decouple with 1µF ceramic capacitor.
Enable Input. Active HIGH. Logic HIGH = ON, logic LOW = OFF. Do not leave floating.
Exposed Heatsink Pad. Connect to ground for best thermal performance.
April 2012
2
M9999-043012-A
Micrel, Inc.
MIC5363/4
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) ........................................
−0.3V
to
+6V
Enable Voltage (V
EN
)...............................−0.3V to V
IN
+0.3V
Power Dissipation (P
D
) ........................... Internally Limited
(3)
Lead Temperature (soldering, 10s)............................ 260°C
Junction Temperature (T
J
) ........................–40°C to +125°C
Storage Temperature (T
S
).........................–65°C to +150°C
ESD Rating
(4)
.................................................................. 2kV
Operating Ratings
(2)
Supply Voltage (V
IN
).....................................
+2.5V
to
+5.5V
Enable Voltage (V
EN
).............................................. 0V to V
IN
Junction Temperature (T
J
) ........................ –40°C to +125°C
Junction Thermal Resistance
1.2mm
×
1.2mm Thin MLF
®
(θ
JA
).....................173°C/W
Electrical Characteristics
(5)
V
IN
= V
EN
= V
OUT
+
1V, 2.5V if V
OUT
≤
1.5V; I
OUT
= 100µA; C
OUT
= 1µF; T
J
= 25°C,
bold
values indicate –40°C to +125°C, unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
(6)
Load Regulation
Condition
Variation from nominal V
OUT
Variation from nominal V
OUT
, –40°C to +125°C
V
IN
= Max(V
OUT
+ 1V, 2.5V) to 5.5V, I
OUT
=100µA
I
OUT
=100µA to 300mA
I
OUT
=50mA; V
OUT
≥
2.8V
Dropout Voltage
I
OUT
=300mA; V
OUT
≥
2.8V
I
OUT
=50mA; 2.5V
≤
V
OUT
<
2.8V
I
OUT
=300mA; 2.5V
≤
V
OUT
<
2.8V
Ground Pin Current
Shutdown Current
Supply Ripple Rejection
Current Limit
Output Voltage Noise
Auto-Discharge NFET Resistance
Enable Inputs (EN)
Enable Input Voltage
Enable Input Current
Turn-On Time
Logic Low
Logic High
V
IL
≤
0.2V
V
IH
≥
1.2V
C
OUT
= 1µF
1.2
0.01
0.01
60
1
1
150
0.2
V
µA
µs
V
EN
= High; I
OUT
= 0mA
V
EN
= High; I
OUT
= 300mA
V
EN
= 0V
f = 1kHz; C
OUT
= 1µF
V
OUT
= 0V
C
OUT
= 1µF; 10Hz to 100kHz
MIC5364 only; V
EN
= 0V; V
IN
= 3.6V; I
OUT
=
−3mA
325
Min.
−2.0
−3.0
0.02
0.3
35
225
55
300
38
55
0.1
70
520
200
30
680
Typ.
Max.
2.0
3.0
0.2
0.7
65
380
100
600
53
70
1
µA
µA
dB
mA
µV
RMS
Ω
mV
Units
%
%/V
%
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2.
3.
4.
5.
6.
7.
The device is not guaranteed to function outside its operating rating.
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.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
Specification for packaged product only.
Regulation is measured at constant junction temperature using low duty cycle pulse testing; changes in output voltage due to heating effects are
covered by the thermal regulation specification.
Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value.
April 2012
3
M9999-043012-A
Micrel, Inc.
MIC5363/4
Typical Characteristics
Power Supply
Rejection Ratio
120
100
80
60
40
20
0
10
100
1K
10K
100K
1M
100mA
V
IN
= V
EN
= 3.8V
V
OUT
= 2.8V
C
OUT
= 1µF
Output Voltage vs.
Input Voltage (V
OUT
= 2.8V)
3.40
1.30
3.20
Output Voltage vs.
Input Voltage (V
OUT
=1.2V)
OUTPUT VOLTAGE (V)
3.00
2.80
2.60
2.40
2.20
2.00
2.5
100µA
OUTPUT VOLTAGE (V)
100µA
1.26
100µA
1.22
PSRR (dB)
200mA
1.18
300mA
1.14
V
OUT
= 1.2V
C
IN
= C
OUT
= 1µF
1.10
300mA
V
OUT
= 2.8V
C
IN
= C
OUT
= 1µF
3
3.5
4
4.5
5
5.5
2.5
3
3.5
4
4.5
5
5.5
FREQUENCY (Hz)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Output Voltage
vs. Output Current
2.82
V
IN
= 3.8V
2.81
C
IN
= C
OUT =
1µF
V
OUT
= 2.8V
Ground Current
vs. Input Voltage
70
120
Ground Current
vs. Output Current
100
80
60
40
V
IN
= 3.8V
20
0
V
OUT
= 2.8V
C
IN
= C
OUT
= 1µF
GROUND CURRENT (µA)
50
40
30
NO LOAD
20
10
0
V
OUT
= 2.8V
C
IN
= C
OUT
= 1µF
2.80
2.79
2.78
0
50
100
150
200
250
300
GROUND CURRENT (µA)
OUTPUT VOLTAGE (V)
60
300mA
2.5
3
3.5
4
4.5
5
5.5
0
50
100
150
200
250
300
OUTPUT CURRENT (mA)
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Output Current
240
220
200
Dropout Voltage
vs. Temperature
300
V
OUT
= 2.8V
250
C
IN
= C
OUT
= 1µF
300mA
700
650
Current Limit
vs. Input Voltage
OUTPUT VOLTAGE (V)
DROPOUT VOLTAGE (mV)
180
160
140
120
100
80
60
40
20
0
0
50
100
150
200
250
300
V
OUT
= 2.8V
C
IN
= C
OUT
= 1µF
CURRENT LIMIT (mA)
600
550
500
450
400
350
V
OUT
= 1.2V
C
IN
= C
OUT
= 1µF
2.5
3
3.5
4
4.5
5
5.5
200
150
100
50
0
-40
-20
0
20
40
60
80
100
120
150mA
50mA
OUTPUT CURRENT (mA)
TEMPERATURE( °C)
INPUT VOLTAGE (V)
April 2012
4
M9999-043012-A
Micrel, Inc.
MIC5363/4
Typical Characteristics (Continued)
Output Noise Spectral Density
10.000
1.000
NOISE uV/√Hz
0.100
V
IN
= 4.5V
V
OUT
= 2.8V
C
OUT
= 1µF
I
OUT
= 51mA
NOISE (10Hz - 100kHz) = 192µV
0.010
0.001
10
100
1K
10K
100K
1M
FREQUENCY (Hz)
April 2012
5
M9999-043012-A
微控制器 MCU
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