MIC5365/6

High Performance Single 150mA LDO

General Description

Features

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 29A). 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

2
MLF occupying only 1mm 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 40C to 125C.
Data sheets and support documentation can be found on
Micrels web site at www.micrel.com.

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 1F ceramic output capacitors
Low dropout voltage 155mV @ 150mA
Excellent Load/Line Transient Response
Low quiescent current 29A
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
MIC5365/6-xxYMT
VIN
1F

- Proc I/O
- Vibrator motor
- Rx/Synth

VOUT

EN

1F

VBAT
GND

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

March 2009

M9999-033109-B

Micrel, Inc.

MIC5365/6

Block Diagram

VIN

VOUT

LDO

EN
Reference

GND
MIC5365 Block Diagram

VIN

VOUT

LDO

EN

AutoDischarge

Reference

GND
MIC5366 Block Diagram

March 2009

M9999-033109-B

Micrel, Inc.

MIC5365/6

Ordering Information
Part Number

Marking
Code

Output
Voltage

Temperature Range

Package

MIC5365-1.0YMT

5C

1.0V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

Pb-Free

Lead Finish

MIC5365-1.2YMT

54

1.2V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

MIC5365-1.5YMT

5F

1.5V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

Pb-Free

MIC5365-1.8YMT

5G

1.8V

MIC5365-2.0YMT

5H

2.0V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

MIC5365-2.5YMT

5J

2.5V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

4-Pin 1mm x 1mm Thin MLF

Pb-Free

Pb-Free

MIC5365-2.6YMT
MIC5365-2.7YMT

5K
5L

2.6V
2.7V

40C to +125C

MIC5365-2.8YMT

5M

2.8V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

MIC5365-2.85YMT

5N

2.85V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

Pb-Free

MIC5365-2.9YMT

5O

2.9V

MIC5365-3.0YMT

5P

3.0V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

MIC5365-3.3YMT

5S

3.3V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

MIC5365-1.0YC5

65C

1.0V

40C to +125C

SC-70-5

Pb-Free

MIC5365-1.2YC5

654

1.2V

40C to +125C

SC-70-5

Pb-Free

MIC5365-1.5YC5

65F

1.5V

40C to +125C

SC-70-5

Pb-Free

MIC5365-1.8YC5

65G

1.8V

40C to +125C

SC-70-5

Pb-Free

MIC5365-2.0YC5

65H

2.0V

40C to +125C

SC-70-5

Pb-Free

MIC5365-2.5YC5

65J

2.5V

40C to +125C

SC-70-5

Pb-Free

MIC5365-2.6YC5

65K

2.6V

40C to +125C

SC-70-5

Pb-Free

MIC5365-2.7YC5

65L

2.7V

40C to +125C

SC-70-5

Pb-Free

MIC5365-2.8YC5

65M

2.8V

40C to +125C

SC-70-5

Pb-Free

MIC5365-2.85YC5

65N

2.85V

40C to +125C

SC-70-5

Pb-Free

MIC5365-2.9YC5

65O

2.9V

40C to +125C

SC-70-5

Pb-Free

MIC5365-3.0YC5

65P

3.0V

40C to +125C

SC-70-5

Pb-Free

MIC5365-3.3YC5

65S

3.3V

40C to +125C

SC-70-5

Pb-Free

MIC5366-1.0YMT*

6C

1.0V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

MIC5366-1.2YMT*

64

1.2V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

Pb-Free

MIC5366-1.5YMT*

6F

1.5V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

MIC5366-1.8YMT*

6G

1.8V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

4-Pin 1mm x 1mm Thin MLF

Pb-Free

Pb-Free

MIC5366-2.0YMT*
MIC5366-2.5YMT*

6H
6J

2.0V
2.5V

40C to +125C

MIC5366-2.6YMT*

6K

2.6V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

MIC5366-2.7YMT*

6L

2.7V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

Pb-Free

MIC5366-2.8YMT*

6M

2.8V

MIC5366-2.85YMT*

6N

2.85V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

MIC5366-2.9YMT*

6O

2.9V

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

40C to +125C

4-Pin 1mm x 1mm Thin MLF

Pb-Free

4-Pin 1mm x 1mm Thin MLF

Pb-Free

MIC5366-3.0YMT*

6P

3.0V

MIC5366-3.3YMT*

6S

3.3V

MIC5366-1.0YC5*

66C

1.0V

40C to +125C

SC-70-5

Pb-Free

MIC5366-1.2YC5*

664

1.2V

40C to +125C

SC-70-5

Pb-Free

March 2009

40C to +125C

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Micrel, Inc.

MIC5365/6

Part Number

Marking
Code

Output
Voltage

Temperature Range

Package

Lead Finish

MIC5366-1.5YC5*

66F

1.5V

40C to +125C

SC-70-5

Pb-Free

MIC5366-1.8YC5*

66G

1.8V

40C to +125C

SC-70-5

Pb-Free

MIC5366-2.0YC5*

66H

2.0V

40C to +125C

SC-70-5

Pb-Free

MIC5366-2.5YC5*

66J

2.5V

40C to +125C

SC-70-5

Pb-Free

MIC5366-2.6YC5*

66K

2.6V

40C to +125C

SC-70-5

Pb-Free

MIC5366-2.7YC5*

66L

2.7V

40C to +125C

SC-70-5

Pb-Free

MIC5366-2.8YC5*

66M

2.8V

40C to +125C

SC-70-5

Pb-Free

MIC5366-2.85YC5*

66N

2.85V

40C to +125C

SC-70-5

Pb-Free

MIC5366-2.9YC5*

66O

2.9V

40C to +125C

SC-70-5

Pb-Free

MIC5366-3.0YC5*

66P

3.0V

40C to +125C

SC-70-5

Pb-Free

MIC5366-3.3YC5*

66S

3.3V

40C to +125C

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.

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MIC5365/6

Pin Configuration
VIN

EN

EN GND VIN
1
3
2

Top View

VOUT

GND

4
NC

4-Pin 1mm x 1mm Thin MLF (MT)

Fixed Version

5
VOUT

5-Pin SC-70 (C5)

Fixed Version

Pin Description
Pin Number

Pin Name
Thin MLF-4

Pin Name
SC-70-5

VOUT

VIN

Supply Input.

GND

GND

Ground

EN

EN

VIN

NC

VOUT

EP

HS Pad

NA

March 2009

Pin Function

Output Voltage.

Enable Input: Active High. High = ON; Low = OFF. Do not leave floating.
Supply Input.
No connect. Not internally connected.
Output Voltage.
Exposed Heatsink Pad.

M9999-033109-B

Micrel, Inc.

MIC5365/6

Absolute Maximum Ratings(1)

Operating Ratings(2)

Supply Voltage (VIN) ............................................... 0V to 6V

Enable Voltage (VEN).............................................. 0V to VIN
Power Dissipation (PD) ........................... Internally Limited(3)
Lead Temperature (soldering, 3sec)........................ 260C
Junction Temperature (TJ) ........................40C to +125C
Storage Temperature (Ts) .........................65C to +150C
ESD Rating(4) .................................................................. 2kV

Supply Voltage (VIN)......................................... 2.5V to 5.5V

Enable Voltage (VEN).............................................. 0V to VIN
Junction Temperature (TJ) ........................ 40C to +125C
Junction Thermal Resistance
1x1 Thin MLF-4 (JA) .......................................250C/W
SC-70-5 (JA) ................................................256.5C/W

Electrical Characteristics(5)
VIN = VEN = VOUT + 1V; CIN = COUT = 1F; IOUT = 100A; TJ = 25C, bold values indicate 40C to +125C, unless noted.
Parameter

Condition

Output Voltage Accuracy

Line Regulation
Load Regulation
Dropout Voltage

(6)

(7)

Min

Typ

Max

Units

Variation from nominal VOUT

2.0

+2.0

Variation from nominal VOUT; 40C to +125C

3.0

+3.0

VIN = VOUT +1V to 5.5V; IOUT = 100A

0.02

0.3

IOUT = 100A to 150mA

0.3

IOUT = 50mA; VOUT 2.8V

55

110

mV

IOUT = 150mA; VOUT 2.8V

155

310

mV

IOUT = 50mA; VOUT < 2.8V

60

135

mV

IOUT = 150mA; VOUT < 2.8V

180

380

mV

IOUT = 0mA

29

39

Ground Pin Current in Shutdown

VEN 0.2V

0.05

Ripple Rejection

f = up to 1kHz; COUT = 1F

80

dB

f = 1kHz 10kHz; COUT = 1F

65

dB

Ground Pin Current

(8)

Current Limit

VOUT = 0V

Output Voltage Noise

COUT = 1F, 10Hz to 100kHz

200

200

325

550

VRMS

mA

Auto-Discharge NFET
Resistance

MIC5366 Only; VEN = 0V; VIN = 3.6V; IOUT = 3mA

30

Enable Input

Enable Input Voltage

Logic Low

0.2

Logic High
Enable Input Current
Turn-on Time

V
V

1.2

VIL 0.2V

0.01

VIH 1.2V

0.01

50

125

COUT = 1F; IOUT = 150mA

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) / JA. 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.

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MIC5365/6

Typical Characteristics
Power Supply
Rejection Ratio

Dropout Voltage
vs. Load Current

160

200

140

100A

120

Dropout Voltage
vs. Temperature
VOUT = 3.3V
CIN = C OUT = 1F

150mA

150

100
75mA

60

38

1M

Ground Current
vs. Supply Voltage

100A

28
26
24

VEN = V IN
VOUT = 3.3V
CIN = C OUT = 1F

22

3.0 3.5 4.0 4.5 5.0

SUPPLY VOLTAGE (V)

40

5.5

30

32

28
26
24

28
02

VIN = V EN = V OUT + 1V
VOUT = 3.3V
CIN = C OUT = 1F

3.40

3.2

55 07 5 100 125 150

LOAD CURRENT (mA)

Output Voltage
vs. Supply Voltage

3.4
3.3

3.3

150mA
3.2

2.8
VIN = V EN = V OUT + 1V
VOUT = 3.3V
CIN = C OUT = 1F
COUT = 1F/10V

3.20
3.15

2.7

VEN = V IN
VOUT = 3.3V
CIN = C OUT = 1F

2.6

20 40 60 80 100 120 140 160

LOAD CURRENT (mA)

Current Limit
vs. Supply Voltage

2.5
2.5

300

0.1

3.0 3.5 4.0 4.5 5.0

SUPPLY VOLTAGE (V)

3.1

5.5

VIN = V OUT + 1V
VOUT = 3.3V
CIN = C OUT = 1F
IOUT = 150m A

3.0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (C)

Output Noise
Spectral Density

10

350

Output Voltage
vs. Temperature

3.4

2.9

3.25

VIN = V EN = V OUT + 1V

50mA

3.0

3.30

100A

VOUT = 3.3V
22
CIN = C OUT = 1F
20
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (C)

3.5

1mA

3.1

3.35

Ground Current
vs. Temperature

38 150mA
36
34
100mA
32 50mA

30

Output Voltage
vs. Load Current

3.50

0.01 VIN = V EN = 4.5V

250

200
3.0

Ground Current
vs. Load Current

0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (C)

34

3.45

400

55 07 5 100 125 150

LOAD CURRENT (mA)

36

30

3.10
0

10mA

38

32

20
2.5

0
02

40

150mA

34

VOUT = 3.3V
CIN = C OUT = 1F

20

100
1k
10k 100k
FREQUENCY (Hz)

36

50mA

50

40

VIN = VOUT +1V

VOUT = 2.5V
COUT = 1F

0
10

100mA

100

80

150mA

VOUT = 2.8V
CIN = C OUT = 1F

VOUT = 3.3V
CIN = C OUT = 1F

3.5
4.0
4.5
5.0
SUPPLY VOLTAGE (V)

March 2009

Noise (10Hz to 100kHz) = 198.19V

5.5

0.001
10

100

RMS

1k 10k 100k 1M 10M

FREQUENCY (Hz)

M9999-033109-B

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MIC5365/6

Functional Characteristics

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Micrel, Inc.

MIC5365/6

Application Information

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.

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 1F 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.

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 <100A over the load range, the power
dissipation contributed by the ground current is < 1% and
can be ignored for this calculation.
PD = (3.6V 2.8V) 150mA

Output Capacitor
The MIC5365/6 requires an output capacitor of 1F 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 1F 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.

PD = 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:
TJ(max) TA
PD(max) =
JA

TJ(max) = 125C, the maximum junction temperature of the

die, JA thermal resistance = 250C/W for the YMT
package and 256.5C/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-toambient thermal resistance for the minimum footprint is
250C/W.
The maximum power dissipation must not be exceeded
for proper operation.

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.

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MIC5365/6

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 = (125C TA)/(250C/W)
TA = 95C

March 2009

Therefore the maximum ambient operating temperature

of 95C 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 Micrels 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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MIC5365/6

U1
MIC5365/6-xxYMT

J1
VIN

VIN
GND

VOUT
EN

C1
1F
10V

J3
VOUT

J5
EN
C2
1F
10V

J2
GND

J4
GND

Bill of Materials
Item

Part Number

C1, C2

GRM155R61A105KE15D

U1

MIC5365/6-xxYMT

Manufacturer
(1)

Murata

Description

Qty.

Capacitor, 1F Ceramic, 10V, X7R, Size 0402

High Performance Single 150mA LDO

Micrel, Inc.(3)

Notes:
1. Murata: www.murata.com
2. Micrel, Inc.: www.micrel.com

March 2009

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Micrel, Inc.

MIC5365/6

PCB Layout Recommendations (1mm x 1mm Thin MLF)

Top Layer

Bottom Layer

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MIC5365/6

PCB Layout Recommendations (SC-70-5)

Top Layer

Bottom Layer

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MIC5365/6

Package Information

4-Pin 1mm x 1mm Thin MLF (MT)

5-Pin SC-70 (C5)

March 2009

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MIC5365/6

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
Purchasers use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchasers own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
2008 Micrel, Incorporated.

March 2009

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