Micrel MIC5364-1.2YMT High-psrr, 300ma, î¼cap ldo in 1.2mm ã 1.2mm thin mlfâ® Datasheet

MIC5363/4
High-PSRR, 300mA, µCap LDO
in 1.2mm × 1.2mm Thin MLF®
General Description
Features
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.
•
•
•
•
•
•
•
•
•
•
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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
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•
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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
Marking
Code
Voltage(1)
Junction
Temperature Range
Package(2)
Lead Finish(3)
MIC5363-1.2YMT
34
1.2
–40°C to +125°C
6-Pin 1.2 mm × 1.2mm Thin MLF®
Pb-Free
MIC5363-2.8YMT
3G
2.8
–40°C to +125°C
6-Pin 1.2 mm × 1.2mm Thin MLF®
Pb-Free
–40°C to +125°C
®
Pb-Free
®
Pb-Free
®
Pb-Free
®
Pb-Free
Part Number
MIC5363-3.3YMT
3S
MIC5364-1.2YMT
(4)
MIC5364-2.8YMT
(4)
MIC5364-3.3YMT
(4)
3.3
44
1.2
4X
–40°C to +125°C
2.8
4S
–40°C to +125°C
3.3
–40°C to +125°C
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
Notes:
1.
Other voltages available. Contact Micrel for details.
2.
“▲” = Pin 1 identifier.
3.
Green, RoHS-compliant. Level finish is NiPdAu. Mold compound is Halogen free.
4.
MIC5364 offers Auto-Discharge function.
Pin Configuration
6-Pin 1.2mm × 1.2mm Thin MLF® (MT)
Pin Description
Pin Number
Pin Name
1
N/C
Not internally connected.
2
N/C
Not internally connected.
3
GND
Ground.
4
VIN
Supply Input. Decouple with 1µF ceramic capacitor.
5
VOUT
6
EN
EP
ePad
April 2012
Pin Function
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.
2
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Micrel, Inc.
MIC5363/4
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (VIN) ........................................ −0.3V to +6V
Enable Voltage (VEN)...............................−0.3V to VIN +0.3V
Power Dissipation (PD) ........................... Internally Limited(3)
Lead Temperature (soldering, 10s)............................ 260°C
Junction Temperature (TJ) ........................–40°C to +125°C
Storage Temperature (TS).........................–65°C to +150°C
ESD Rating(4) .................................................................. 2kV
Supply Voltage (VIN)..................................... +2.5V to +5.5V
Enable Voltage (VEN).............................................. 0V to VIN
Junction Temperature (TJ) ........................ –40°C to +125°C
Junction Thermal Resistance
1.2mm × 1.2mm Thin MLF® (θJA).....................173°C/W
Electrical Characteristics(5)
VIN = VEN = VOUT + 1V, 2.5V if VOUT ≤ 1.5V; IOUT = 100µA; COUT = 1µF; TJ = 25°C, bold values indicate –40°C to +125°C, unless noted.
Parameter
Output Voltage Accuracy
Condition
Min.
Typ.
Max.
Variation from nominal VOUT
−2.0
2.0
Variation from nominal VOUT, –40°C to +125°C
−3.0
3.0
Units
%
Line Regulation(6)
VIN = Max(VOUT + 1V, 2.5V) to 5.5V, IOUT =100µA
0.02
0.2
%/V
Load Regulation
IOUT =100µA to 300mA
0.3
0.7
%
IOUT =50mA; VOUT ≥ 2.8V
35
65
IOUT =300mA; VOUT ≥ 2.8V
225
380
IOUT =50mA; 2.5V ≤ VOUT < 2.8V
55
100
IOUT =300mA; 2.5V ≤ VOUT < 2.8V
300
600
VEN = High; IOUT = 0mA
38
53
VEN = High; IOUT = 300mA
55
70
VEN = 0V
0.1
1
µA
680
mA
Dropout Voltage
Ground Pin Current
Shutdown Current
70
mV
µA
Supply Ripple Rejection
f = 1kHz; COUT = 1µF
Current Limit
VOUT = 0V
Output Voltage Noise
COUT = 1µF; 10Hz to 100kHz
200
µVRMS
Auto-Discharge NFET Resistance
MIC5364 only; VEN = 0V; VIN = 3.6V; IOUT = −3mA
30
Ω
325
520
dB
Enable Inputs (EN)
Enable Input Voltage
Enable Input Current
Turn-On Time
0.2
Logic Low
1.2
Logic High
VIL ≤ 0.2V
0.01
1
VIH ≥ 1.2V
0.01
1
COUT = 1µF
60
150
V
µA
µs
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 TA (ambient temperature) is PD(max) =(TJ(max) – TA) / θJA. Exceeding the maximum allowable power
dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
4.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
5.
Specification for packaged product only.
6.
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.
7.
Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value.
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MIC5363/4
Typical Characteristics
Power Supply
Rejection Ratio
Output Voltage vs.
Input Voltage (VOUT = 2.8V)
120
3.40
60
200mA
100mA
VIN = VEN = 3.8V
20
3.00
100µA
2.80
2.60
300mA
2.40
VOUT = 2.8V
2.20
VOUT = 2.8V
COUT = 1µF
0
OUTPUT VOLTAGE (V)
80
40
1.30
3.20
100µA
OUTPUT VOLTAGE (V)
100
1K
10K
100K
1M
1.18
300mA
1.14
V OUT = 1.2V
1.10
2.5
3
3.5
FREQUENCY (Hz)
4
4.5
5
5.5
2.5
3
INPUT VOLTAGE (V)
Output Voltage
vs. Output Current
GROUND CURRENT (µA)
CIN = COUT = 1µF
2.80
2.79
4
300mA
60
50
40
30
NO LOAD
20
VOUT = 2.8V
10
50
100
150
200
250
300
2.5
3.5
4
4.5
5
INPUT VOLTAGE (V)
Dropout Voltage
vs. Output Current
Dropout Voltage
vs. Temperature
100
80
60
40
VIN = 3.8V
20
VOUT = 2.8V
CIN = COUT = 1µF
0
5.5
250
160
140
120
100
80
60
40
VOUT = 2.8V
20
CIN = COUT = 1µF
0
0
50
100
150
200
250
OUTPUT CURRENT (mA)
April 2012
300
150
200
250
300
Current Limit
vs. Input Voltage
300mA
650
CIN = COUT = 1µF
CURRENT LIMIT (mA)
DROPOUT VOLTAGE (mV)
180
100
700
VOUT = 2.8V
200
50
OUTPUT CURRENT (mA)
300
220
OUTPUT VOLTAGE (V)
3
OUTPUT CURRENT (mA)
240
5.5
0
0
0
5
120
CIN = COUT = 1µF
2.78
4.5
Ground Current
vs. Output Current
70
V IN = 3.8V
V OUT = 2.8V
3.5
INPUT VOLTAGE (V)
Ground Current
vs. Input Voltage
2.82
2.81
100µA
1.22
CIN = COUT = 1µF
2.00
10
1.26
CIN = COUT = 1µF
GROUND CURRENT (µA)
PSRR (dB)
100
OUTPUT VOLTAGE (V)
Output Voltage vs.
Input Voltage (VOUT =1.2V)
200
150mA
150
100
50mA
600
550
500
450
50
400
0
350
-40
-20
0
20
40
60
80
TEMPERATURE( °C)
4
100
120
VOUT = 1.2V
CIN = COUT = 1µF
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
M9999-043012-A
Micrel, Inc.
MIC5363/4
Typical Characteristics (Continued)
Output Noise Spectral Density
10.000
NOISE uV/√Hz
1.000
0.100
VIN = 4.5V
VOUT = 2.8V
COUT = 1µF
IOUT = 51mA
0.010
NOISE (10Hz - 100kHz) = 192µV
0.001
10
100
1K
10K
100K
1M
FREQUENCY (Hz)
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Micrel, Inc.
MIC5363/4
Functional Characteristics
April 2012
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Micrel, Inc.
MIC5363/4
Functional Diagram
MIC5363 Block Diagram
MIC5364 Block Diagram
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MIC5363/4
Application Information
No Load Stability
The MIC5363/4 will remain stable and in regulation
without the need of a minimum load. This reduces the
amount and therefore cost of external components.
The MIC5363/4 is a 300mA LDO, packaged in a 1.2mm
x 1.2mm Thin MLF® package. The MIC5364 includes an
auto-discharge feature which automatically discharges
the output capacitor when the output is disabled. The
MIC5363/4 consists of an internal reference, error
amplifier, P-channel pass transistor, and internal
feedback resistors. The error amplifier compares the
feedback voltage with that of the reference. Depending
upon whether the feedback is lower or higher than the
reference determines whether the gate of the pass
transistor is pulled low to allow more current and
increase output voltage or pulled high to reduce current.
The MIC5363/4 regulator is fully protected from damage
due to fault conditions through linear current limiting and
thermal shutdown.
Enable/Shutdown
The MIC5363/4 comes with an active-high enable pin
that allows the regulator to be disabled. Forcing the
enable pin low disables the regulator and sends it into an
off-mode current state drawing virtually zero current.
When disabled, the MIC5364 switches an internal 30Ω
load on the regulator output to discharge the external
capacitor.
Forcing the enable pin high enables the output voltage.
The active-high enable pin uses CMOS technology and
cannot be left floating. A floating enable pin may cause
an indeterminate state on the output.
Input Capacitor
The MIC5363/4 is a high-performance, high-bandwidth
device. An input capacitor of 1µF from the input pin to
ground is required to provide stability. Low-ESR ceramic
capacitors provide optimal performance in small board
area. Additional high-frequency capacitors, such as
small valued NPO dielectric type capacitors, help filter
out high-frequency noise and are good practice in any
RF-based circuit. X5R or X7R dielectrics are
recommended for the input capacitor. Y5V dielectrics
lose most of their capacitance over temperature and are
therefore not recommended.
Thermal Considerations
The MIC5363/4 is designed to provide a 300mA
continuous current output in a very-small package.
Maximum operating temperature can be calculated
based on the output currents and the voltage drop
across the part. For example, if the input voltage is 3.6V,
VOUT = 2.8V and the output current = 300mA. The actual
power dissipation of the regulator circuit can be
determined using the equation:
PD = (VIN − VOUT) IOUT + VIN IGND
Output Capacitor
The MIC5363/4 requires an output capacitor of 1µF or
greater to maintain stability. The design is optimized for
use with low-ESR ceramic chip capacitors. High-ESR
capacitors may cause high-frequency oscillation. The
output capacitor can be increased, but performance has
been optimized for a 1µF ceramic output capacitor.
X7R and X5R dielectric ceramic capacitors are
recommended for their temperature performance. X7R
capacitors change capacitance by 15% over their
operating temperature range and are the most stable
type of ceramic capacitors. Z5U and Y5V dielectric
capacitors change value by as much as 50% and 60%
respectively over their operating temperature ranges. To
use a ceramic-chip capacitor with Y5V dielectric the
value must be much higher than an X7R ceramic
capacitor to ensure the same minimum capacitance over
the equivalent operating temperature range.
Because this is a CMOS device and the ground current
is typically <60µA over the load range, the power
dissipation contributed by the ground current is < 1%
which can be ignored for this calculation:
PD = (3.6V − 2.8V) × 300mA
PD = 0.24W
To determine the maximum ambient operating
temperature of the package, use the junction to ambient
thermal resistance of the device and the following basic
equation:
⎛ TJ(MAX) - TA
PD(MAX) = ⎜
⎜
θ JA
⎝
⎞
⎟
⎟
⎠
TJ(MAX) = 125°C
θJA = 173°C/W
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MIC5363/4
Substituting PD for PD(MAX) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit. The junction-toambient thermal resistance for the standard footprint is
173°C/W.
The maximum power dissipation must not be exceeded
for proper operation.
For example, when operating a 2.8V application with an
input voltage of 3.6V and 300mA output with a standard
footprint layout, the maximum ambient operating
temperature TA can be determined as follows:
0.24W = (125°C − TA) / (173°C/W)
TA = 83°C
Therefore, a MIC5363-2.8YMT application with a 300mA
output current can accept an ambient operating
temperature of 83°C in a 1.2mm x 1.2mm Thin MLF®
package. For a full discussion of heat sinking and
thermal effects on voltage regulators refer to the
“Regulator Thermals” section of Micrel’s Designing with
Low-Dropout Voltage Regulators handbook. This
information can be found on Micrel's website at:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
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MIC5363/4
Evaluation Board Schematic
Bill of Materials
Item
C1, C2
R1
Part Number
GRM155R61A105KE15D
CRCW04021003FKED
U1
MIC5363/4-xxYMT
Manufacturer
(1)
Murata
Qty.
1µF/6.3V ceramic capacitor, X5R, size 0402
(2)
Vishay
Micrel, Inc.
Description
2
Resistor, 100k (0403 size), 1%
(3)
1
®
300mA µCap LDO in 1.2mm × 1.2mm Thin MLF
1
Notes:
1.
Murata Tel: www.murata.com.
2.
Vishay: www.vishay.com.
3.
Micrel, Inc.: www.micrel.com.
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MIC5363/4
PCB Layout Recommendations
Top Layer
Bottom Layer
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MIC5363/4
Package Information
6-Pin 1.2mm × 1.2mm Thin MLF®
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability
whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical
implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user.
A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to
fully indemnify Micrel for any damages resulting from such use or sale.
© 2012 Micrel, Incorporated.
April 2012
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