MIC5365/6
High Performance Single 150mA LDO
MLF and MicroLeadFrame 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
September 2009 M9999-090109-C
General Description
The MIC5365/6 is an advanced general purpose linear
regulator offering high power supply rejection (PSRR) in
an ultra-small 1mm x 1mm package. The MIC5366
includes an auto-discharge feature that is activated when
the enable pin is low. The MIC5365/6 is capable of
sourcing 150mA output current and offers high PSRR
making it an ideal solution for any portable electronic
application.
Ideal for battery powered applications, the MIC5365/6
offers 2% initial accuracy, low dropout voltage (155mV @
150mA), and low ground current (typically 29µA). The
MIC5365/6 can also be put into a zero-off-mode current
state, drawing virtually no current when disabled.
The MIC5365/6 is available in several advanced packages
including a lead-free (RoHS compliant) 1mm x 1mm Thin
MLF® occupying only 1mm2 of PCB area, a 75% reduction
in board area compared to SC-70 and 2mm x 2mm MLF®
packages. It is also availabe in an SC-70-5 package.
The MIC5365/6 has an operating junction temperature
range of –40°C to 125°C.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
• Tiny 1mm x 1mm Thin MLF® and SC-70-5 packages
• Input voltage range: 2.5V to 5.5V
• 150mA guaranteed output current
• Stable with 1µF ceramic output capacitors
• Low dropout voltage – 155mV @ 150mA
• Excellent Load/Line Transient Response
• Low quiescent current – 29µA
• High PSRR – 70dB
• Output discharge circuit – MIC5366
• High output accuracy
– ±2% initial accuracy
• Thermal shutdown and current limit protection
Applications
• Mobile phones
• Digital cameras
• GPS, PDAs, PMP, handhelds
• Portable electronics
___________________________________________________________________________________________________________
Typical Application
VOUT
MIC5365/6-xxYMT
VIN
EN
GND
1µF1µF
VBAT
- Proc I/O
- Vibrator motor
- Rx/Synth
Micrel, Inc. MIC5365/6
September 2009 2 M9999-090109-C
Block Diagram
LDO
VIN VOUT
EN
GND
Reference
MIC5365 Block Diagram
LDO
VIN VOUT
EN
GND
Reference Auto-
Discharge
MIC5366 Block Diagram
Micrel, Inc. MIC5365/6
September 2009 3 M9999-090109-C
Ordering Information
Part Number Marking
Code Output
Voltage Temperature Range Package Lead Finish
MIC5365-1.0YMT 5C 1.0V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-1.2YMT 54 1.2V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-1.3YMT 55 1.3V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-1.5YMT 5F 1.5V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-1.8YMT 5G 1.8V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-2.0YMT 5H 2.0V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-2.5YMT 5J 2.5V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-2.6YMT 5K 2.6V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-2.7YMT 5L 2.7V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-2.8YMT 5M 2.8V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-2.85YMT 5N 2.85V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-2.9YMT 5O 2.9V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-3.0YMT 5P 3.0V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-3.1YMT 5Q 3.1V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-3.3YMT 5S 3.3V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5365-1.0YC5 65C 1.0V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-1.2YC5 654 1.2V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-1.3YC5 655 1.3V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-1.5YC5 65F 1.5V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-1.8YC5 65G 1.8V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-2.0YC5 65H 2.0V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-2.5YC5 65J 2.5V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-2.6YC5 65K 2.6V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-2.7YC5 65L 2.7V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-2.8YC5 65M 2.8V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-2.85YC5 65N 2.85V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-2.9YC5 65O 2.9V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-3.0YC5 65P 3.0V –40°C to +125°C SC-70-5 Pb-Free
MIC5365-3.3YC5 65S 3.3V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-1.0YMT* 6C 1.0V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-1.2YMT* 64 1.2V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-1.3YMT* 65 1.3V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-1.5YMT* 6F 1.5V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-1.8YMT* 6G 1.8V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-2.0YMT* 6H 2.0V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-2.5YMT* 6J 2.5V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-2.6YMT* 6K 2.6V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-2.7YMT* 6L 2.7V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-2.8YMT* 6M 2.8V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-2.85YMT* 6N 2.85V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-2.9YMT* 6O 2.9V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-3.0YMT* 6P 3.0V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
MIC5366-3.3YMT* 6S 3.3V –40°C to +125°C 4-Pin 1mm x 1mm Thin MLF® Pb-Free
Micrel, Inc. MIC5365/6
September 2009 4 M9999-090109-C
Part Number Marking
Code Output
Voltage Temperature Range Package Lead Finish
MIC5366-1.0YC5* 66C 1.0V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-1.2YC5* 664 1.2V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-1.3YC5* 665 1.3V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-1.5YC5* 66F 1.5V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-1.8YC5* 66G 1.8V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-2.0YC5* 66H 2.0V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-2.5YC5* 66J 2.5V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-2.6YC5* 66K 2.6V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-2.7YC5* 66L 2.7V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-2.8YC5* 66M 2.8V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-2.85YC5* 66N 2.85V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-2.9YC5* 66O 2.9V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-3.0YC5* 66P 3.0V –40°C to +125°C SC-70-5 Pb-Free
MIC5366-3.3YC5* 66S 3.3V –40°C to +125°C SC-70-5 Pb-Free
Notes:
1. Other voltages available. Contact Micrel for details.
2. Under bar symbol ( _ ) may not be to scale.
3. Thin MLF® = Pin 1 identifier.
4. Thin MLF® is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
* MIC5366 offers Auto-Discharge function.
Micrel, Inc. MIC5365/6
September 2009 5 M9999-090109-C
Pin Configur ation
12
43
Top View
VOUT GND
ENVIN
EN GND
NC VOUT
VIN
31
5
2
4
4-Pin 1mm x 1mm Thin MLF® (MT)
Fixed Version 5-Pin SC-70 (C5)
Fixed Version
Pin Description
Pin Number Pin Name
Thin MLF-4 Pin Name
SC-70-5 Pin Function
1 VOUT – Output Voltage.
1 – VIN Supply Input.
2 GND GND Ground
3 EN EN Enable Input: Active High. High = ON; Low = OFF. Do not leave floating.
4 VIN – Supply Input.
4 – NC No connect. Not internally connected.
5 – VOUT Output Voltage.
EP HS Pad NA Exposed Heatsink Pad.
Micrel, Inc. MIC5365/6
September 2009 6 M9999-090109-C
Absolute Maximum Ratings(1)
Supply Voltage (VIN)............................................... 0V to 6V
Enable Voltage (VEN).............................................. 0V to VIN
Power Dissipation (PD)........................... Internally Limited(3)
Lead Temperature (soldering, 3µsec)........................ 260°C
Junction Temperature (TJ) ........................–40°C to +150°C
Storage Temperature (Ts) .........................–65°C to +150°C
ESD Rating(4).................................................................. 2kV
Operating Ratings(2)
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
1x1 Thin MLF-4 (θJA) .......................................250°C/W
SC-70-5 (θJA) ................................................256.5°C/W
Electrical Characteristics(5)
VIN = VEN = VOUT + 1V; CIN = COUT = 1µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C to +125°C, unless noted.
Parameter Condition Min Typ Max Units
Variation from nominal VOUT –2.0 +2.0 % Output Voltage Accuracy
Variation from nominal VOUT; –40°C to +125°C –3.0 +3.0 %
Line Regulation VIN = VOUT +1V to 5.5V; IOUT = 100µA 0.02 0.3 %
Load Regulation(6) I
OUT = 100µA to 150mA 0.3 1 %
Dropout Voltage(7) I
OUT = 50mA; VOUT 2.8V
IOUT = 150mA; VOUT 2.8V
IOUT = 50mA; VOUT < 2.8V
IOUT = 150mA; VOUT < 2.8V
55
155
60
180
110
310
135
380
mV
mV
mV
mV
Ground Pin Current(8) I
OUT = 0mA 29 39 µA
Ground Pin Current in Shutdown VEN 0.2V 0.05 1 µA
Ripple Rejection f = up to 1kHz; COUT = 1µF
f = 1kHz – 10kHz; COUT = 1µF
80
65
dB
dB
Current Limit VOUT = 0V 200 325 550 mA
Output Voltage Noise COUT = 1µF, 10Hz to 100kHz 200 µVRMS
Auto-Discharge NFET
Resistance
MIC5366 Only; VEN = 0V; VIN = 3.6V; IOUT = –3mA 30
Enable Input
Logic Low 0.2 V Enable Input Voltage
Logic High 1.2 V
VIL 0.2V 0.01 1 µA Enable Input Current
VIH 1.2V 0.01 1 µA
Turn-on Time COUT = 1µF; IOUT = 150mA 50 125 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, 1.5k 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 measured at 1V differential.
For outputs below 2.5V, dropout voltage is the input-to-output differential with the minimum input voltage 2.5V.
8. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin
current.
Micrel, Inc. MIC5365/6
September 2009 7 M9999-090109-C
Typical Characteristics
0
Power Supply
Rejection Ratio
100
FREQUENCY (Hz)
10 1k 10k 1M
VIN = VOUT +1V
VOUT = 2.5V
COUT = 1µF
75mA
100µA
150mA
100k
0
20
40
60
80
100
120
140
160
02 55 07 5 100 125 150
LOAD CURRENT (mA)
Dropout Voltage
vs. Load Current
VOUT = 3.3V
CIN = C OUT = 1µF
0
150
200
Dropout Voltage
vs. Temperature
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
VOUT = 3.3V
CIN = COUT = 1µF
10mA
150mA
100mA
50mA
50
100
20
22
24
26
28
30
32
34
36
38
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
Ground Current
vs. Supply Voltage
VEN = VIN
VOUT = 3.3V
CIN = C OUT = 1µF
150mA
100µA
28
30
32
34
36
38
40
02 55 07 5 100 125 150
LOAD CURRENT (mA)
Ground Current
vs. Load Current
VIN = V EN = V OUT + 1V
VOUT = 3.3V
CIN = C OUT = 1µF
20
22
24
26
28
30
32
34
36
38
40
Ground Current
vs. Temperature
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
VIN = VEN = V OUT + 1V
VOUT = 3.3V
CIN = COUT = 1µF
50mA
100µA
100mA
150mA
3.10
3.15
3.20
3.25
3.30
3.35
3.40
3.45
3.50
Output Voltage
vs. Load Current
VIN = V EN = VOUT + 1V
VOUT = 3.3V
CIN = C OUT = 1µF
COUT = 1µF/10V
0 20 40 60 80 100 120 140 160
LOAD CURRENT (mA)
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
Output Voltage
vs. Supply Voltage
VEN = VIN
VOUT = 3.3V
CIN = C OUT = 1µF
1mA
50mA
150mA
2.5
2.5
3.0
3.1
3.2
3.4
3.5
Output Voltage
vs. Temperature
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
VIN = V OUT + 1V
VOUT = 3.3V
CIN = C OUT = 1µF
IOUT = 150m A
3.3
200
250
300
350
400
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
Current Limit
vs. Supply Voltage
VOUT = 3.3V
CIN = C OUT = 1µF
0.001
0.01
0.1
1
10
0.001
Output Noise
Spectral Density
100
FREQUENCY (Hz)
10 1k 10k 1M100k 10M
VIN = VEN = 4.5V
VOUT = 2.8V
CIN = COUT = 1µF
Noise (10Hz to 100kHz) = 198.19µV RMS
Micrel, Inc. MIC5365/6
September 2009 8 M9999-090109-C
Functional Characteristics
Micrel, Inc. MIC5365/6
September 2009 9 M9999-090109-C
Application Information
MIC5365 and MIC5366 are Low noise 150mA LDOs.
The MIC5366 includes an auto-discharge circuit that is
switched on when the regulator is disabled through the
Enable pin. The MIC5365/6 regulator is fully protected
from damage due to fault conditions, offering linear
current limiting and thermal shutdown.
Input Capacitor
The MIC5365/6 is a high-performance, high bandwidth
device. An input capacitor of 1µF is required from the
input to ground to provide stability. Low-ESR ceramic
capacitors provide optimal performance at a minimum of
space. 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.
Output Capacitor
The MIC5365/6 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 are not recommended because they may
cause high frequency oscillation. The output capacitor
can be increased, but performance has been optimized
for a 1µF ceramic output capacitor and does not improve
significantly with larger capacitance.
X7R/X5R dielectric-type ceramic capacitors are
recommended because of their temperature
performance. X7R-type 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.
No-Load Stability
Unlike many other voltage regulators, the MIC5365/6 will
remain stable and in regulation with no load. This is
especially important in CMOS RAM keep-alive
applications.
Enable/Shutdown
The MIC5365/6 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 a
“zero” off-mode-current state. In this state, current
consumed by the regulator goes nearly to zero. Forcing
the enable pin high enables the output voltage. The
active-high enable pin uses CMOS technology and the
enable pin cannot be left floating; a floating enable pin
may cause an indeterminate state on the output.
Thermal Considerations
The MIC5365/6 is designed to provide 150mA of
continuous current in a very small package. Maximum
ambient operating temperature can be calculated based
on the output current and the voltage drop across the
part. For example if the input voltage is 3.6V, the output
voltage is 2.8V, and the output current = 150mA. The
actual power dissipation of the regulator circuit can be
determined using the equation:
PD = (VIN – VOUT1) I OUT + VIN IGND
Because this device is CMOS and the ground current is
typically <100µA over the load range, the power
dissipation contributed by the ground current is < 1% and
can be ignored for this calculation.
P
D = (3.6V – 2.8V) × 150mA
P
D = 0.120W
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:
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛−
=
JA
AJ(max)
D(max)
TT
P
θ
TJ(max) = 125°C, the maximum junction temperature of the
die, JA thermal resistance = 250°C/W for the YMT
package and 256.5°C/W for the SC-70-5 package.
Substituting PD for PD(max) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit. The junction-to-
ambient thermal resistance for the minimum footprint is
250°C/W.
The maximum power dissipation must not be exceeded
for proper operation.
Micrel, Inc. MIC5365/6
September 2009 10 M9999-090109-C
For example, when operating the MIC5365-2.8YMT at
an input voltage of 3.6V and 150mA load with a
minimum footprint layout, the maximum ambient
operating temperature TA can be determined as follows:
0.120W = (125°C – TA)/(250°C/W)
T
A = 95°C
Therefore the maximum ambient operating temperature
of 95°C is allowed in a 1mm x 1mm 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
Micrel, Inc. MIC5365/6
September 2009 11 M9999-090109-C
VOUT
U1
MIC5365/6-xxYMT
VIN
ENGND
C2
1µF
10V
J3
VOUT
J5
EN
J4
G
ND
C1
1µF
10V
J1
VIN
J2
G
ND
1
32
4
Bill of Materials
Item Part Number Manufacturer Description Qty.
C1, C2 GRM155R61A105KE15D Murata(1) Capacitor, 1µF Ceramic, 10V, X7R, Size 0402 2
U1 MIC5365/6-xxYMT Micrel, Inc.(3) High Performance Singl e 150mA LDO 1
Notes:
1. Murata: www.murata.com
2. Micrel, Inc.: www.micrel.com
Micrel, Inc. MIC5365/6
September 2009 12 M9999-090109-C
PCB Layout Recommendations (1mm x 1mm Thin MLF ®)
Top Layer
Bottom Layer
Micrel, Inc. MIC5365/6
September 2009 13 M9999-090109-C
PCB Layout Recommendations (SC-70-5)
Top Layer
Bottom Layer
Micrel, Inc. MIC5365/6
September 2009 14 M9999-090109-C
Package Information
4-Pin 1mm x 1mm Thin MLF® (MT)
5-Pin SC-70 (C5)
Micrel, Inc. MIC5365/6
September 2009 15 M9999-090109-C
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
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its
use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
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.
© 2008 Micrel, Incorporated.
