MICREL MIC5387

MIC5387
Ultra-Small Triple 150mA Output LDO
General Description
Features
The MIC5387 is an advanced, general-purpose, triple
linear regulator offering high power supply rejection
(PSRR) in an ultra-small, 6-pin, 1.6mm x 1.6mm Thin
MLF® package. The MIC5387 is capable of 150mA from
each output and offers high PSRR, making it an ideal
solution for any portable electronic application.
Ideal for battery powered applications, the MIC5387 offers
2% initial accuracy, low dropout voltage (180mV @
150mA), and low ground current (typically 32µA per
output).
The MIC5387 is available in a lead-free (RoHS compliant)
1.6mm x 1.6mm 6-pin Thin MLF® occupying only 2.56mm2
of PCB area, a 36% reduction in board area compared to a
2mm x 2mm Thin MLF® package.
The MIC5387 has an operating junction temperature range
of −40°C to +125°C.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
•
•
•
•
•
•
•
•
Input voltage range: 2.5V to 5.5V
150mA guaranteed output current for each output
Stable with ceramic output capacitors
Low dropout voltage: 180mV @ 150mA
Excellent Load/Line Transient Response
Low quiescent current: 32µA per LDO
High PSRR: 70dB
High output accuracy
– ±2% initial accuracy
• Thermal-shutdown and current-limit protection
• Available in a tiny 6-pin 1.6mm x 1.6mm Thin MLF®
Applications
•
•
•
•
Mobile phones
Digital cameras
GPS, PDAs, PMP
Portable electronics
___________________________________________________________________________________________________________
Typical Application
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
April 2010
M9999-041610-A
Micrel, Inc.
MIC5387
Ordering Information
Part Number
Marking Code
VOUT1
VOUT2
VOUT3
Temperature Range
Package
MIC5387-SGFYMT
8A7
3.3V
1.8V
1.5V
−40°C to +125°C
6-Pin 1.6mm x 1.6mm Thin MLF®
MIC5387-SG4YMT
8B7
3.3V
1.8V
1.2V
−40°C to +125°C
6-Pin 1.6mm x 1.6mm Thin MLF®
MIC5387-GMGYMT
8C7
1.8V
2.8V
1.8V
−40°C to +125°C
6-Pin 1.6mm x 1.6mm Thin MLF®
MIC5387-GMMYMT
8D7
1.8V
2.8V
2.8V
−40°C to +125°C
6-Pin 1.6mm x 1.6mm Thin MLF®
Notes:
1. Other voltages available. Contact Micrel for details.
®
2. MLF ▲ = Pin 1 identifier.
®
3. MLF is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
Pin Configuration
6-Pin 1.6mm x 1.6mm Thin MLF® (MT)
Pin Description
Pin
Number
Pin Names
1
GND
Ground for LDO1, 2 and 3.
2
VIN
Input supply for LDO1, 2 and 3.
3
EN2/3
Enable Input 2/3: Enables LDO2 AND LDO3, Active High. High = ON; Low = OFF. Do not leave floating.
4
OUT3
Output Voltage for LDO3.
5
OUT2
Output Voltage for LDO2.
6
OUT1
EP
HS Pad
April 2010
Pin Function
Output Voltage for LDO1.
Exposed Heastsink Pad (connect to Ground plane for best thermal).
2
M9999-041610-A
Micrel, Inc.
MIC5387
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (VIN) ........................................ −0.3V to +6V
Enable Voltage (VEN2/3)...................................... −0.3V to VIN
Power Dissipation (PD) ........................... Internally Limited(3)
Lead Temperature (soldering, 10sec)........................ 260°C
Junction Temperature (TJ) ........................ −40°C to +150°C
Storage Temperature (Ts) ......................... −65°C to +150°C
ESD Rating(4) .................................................................. 2kV
Supply Voltage (VIN)......................................... 2.5V to 5.5V
Enable Voltage (VEN2/3) .......................................... 0V to VIN
Junction Temperature (TJ) ........................ −40°C to +125°C
Junction Thermal Resistance
6-Pin 1.6mm x 1.6mm Thin MLF® (θJA) ..........92.4°C/W
Electrical Characteristics(5)
VIN = VEN2/3 = VOUT + 1V; highest of the three outputs; CIN = COUT1 = COUT2 = COUT3 = 1µF; IOUT1 = IOUT2 = IOUT3 = 100µA;
TJ = 25°C, bold values indicate −40°C to +125°C, unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
(6)
Load Regulation
Dropout Voltage(7)
Ground Pin Current (8)
Ripple Rejection
Condition
Min.
Variation from nominal VOUT
Variation from nominal VOUT; −40°C to +125°C
Typ.
Max.
Units
–2.0
+2.0
%
–3.0
+3.0
%
0.3
%
VIN = VOUT +1V to 5.5V; IOUT = 100µA
0.02
IOUT = 100µA to 150mA
0.65
%
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; VEN2/3 = 0V , VOUT1 = On
32
40
µA
IOUT = 0mA; VOUT > 1.3V VEN2/3 = VIN
96
120
µA
f = up to 1kHz; COUT = 1µF; VOUT < 2.5V
70
dB
f = 1kHz − 10kHz; COUT = 1µF; VOUT < 2.5V
60
dB
Current Limit
VOUT = 0V
Output Voltage Noise
COUT = 1µF, 10Hz to 100kHz
200
325
550
200
mA
µVRMS
Enable Input
Enable Input Voltage (VEN2/3)
Enable Input Current (VEN2/3)
Turn-on Time (VOUT2, VOUT3)
0.2
Logic Low
1.2
Logic High
V
VIL ≤ 0.2V
0.01
VIH ≥ 1.2V
COUT = 1µF; IOUT = 150mA
V
1
µA
0.01
1
µA
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, 1.5kΩ 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 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.
April 2010
3
M9999-041610-A
Micrel, Inc.
MIC5387
Typical Characteristics
DROPOUT VOLTAGE (mV)
IOUT =100µA
-80
-70
-50
IOUT =150mA
-40
-30
-20
VOUT =1.5V
-10
COUT =1µF
0
10
100
1000
10000
100000
VOUT1=3.3V
Ground Current (VOUT1=3.3V)
vs. Supply Voltage
50mA
34
32
VEN2/3=0V
30
VOUT =3.3V
100µA
CIN=COUT1=1µF
Single Output
28
26
2.5 2.8 3.1 3.4 3.7
40
4
VIN=VEN2/3=4.3V
VOUT1=3.3V
50mA
100µA
90
VOUT2=1.8V VOUT3=1.5V
85
CIN=COUT1=COUT2 =COUT3 =1µF
80
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
2.5 2.8 3.1 3.4 3.7 4 4.3 4.6 4.9 5.2 5.5
SUPPLY VOLTAGE (V)
Output Voltage (VOUT1=3.3V)
vs. Supply Voltage
20 40 60 80 100 120
TEMPERATURE(°C)
150mA
VIN=4.3V
VOUT =3.3V
CIN=COUT1=1µF
0
20 40 60 80 100 120
TEMPERATURE(°C)
Output Voltage (VOUT3=1.5V)
vs. Supply Voltage
1.6
1.9
100µA
50mA
-40 -20
Output Voltage (VOUT2=1.8V)
vs. Supply Voltage
3.5
0
Ground Current (VOUT1=3.3V)
vs. Temperature
150mA
95
4.3 4.6 4.9 5.2 5.5
10mA
-40 -20
40 60 80 100 120 140 160
OUTPUT CURRENT (mA)
105
100
50mA
60
20
110
SUPPLY VOLTAGE(V)
3.2
OUTPUT VOLTAGE (V)
3.3
50mA
3.1
3.0
2.9
150mA
2.8
2.7
CIN=COUT1=1µF
2.6
VOUT =3.3V
3
3.5
4
4.5
SUPPLY VOLTAGE (V)
1.8
150mA
5
2.5
5.5
50mA
1.2
VEN2/3=VIN
VOUT =1.2V
3.5
4
4.5
SUPPLY VOLTAGE (V)
April 2010
5
1.5
`
150mA
VEN2/3=VIN
1.45
VOUT =1.5V
CIN=COUT3=1µF
3
3.5
4
4.5
5
5.5
1.4
5.5
2.5
3
3.5
4
4.5
5
SUPPLY VOLTAGE (V)
2
3.4
1.8
3.3
3.2
3.1
VIN=4.3V
VOUT =3.3V
CIN=COUT1 =1µF
1.6
1.4
VIN=VEN2/3=2.8V
VOUT =1.8V
1.2
CIN=COUT2=1µF
IOUT2 =150mA
1
3
-40 -20
5.5
Output Voltage (VOUT2=1.8V)
vs. Temperature
3.5
IOUT1=150mA
1.1
3
50mA
1mA
Output Voltage (VOUT1=3.3V)
vs. Temperature
CIN=COUT3=1µF
2.5
1.55
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE (V)
1.25
1.15
VOUT =1.8V
1.7
1.3
150mA
VEN2/3 =VIN
50mA
1.75
Output voltage (VOUT3=1.2V)
vs. Supply Voltage
1mA
1mA
CIN=COUT2 =1µF
2.5
2.5
1.85
OUTPUT VOLTAGE (V)
100µA
3.4
OUTPUT VOLTAGE (V)
80
GROUND CURRENT ( µA)
GROUND CURRENT (µA)
GROUND CURRENT(µA)
36
100mA
100
Ground Current (All VOUTs)
vs. Supply Voltage
115
150mA
120
120
38
OUTPUT VOLTAGE (V)
140
0
20
FREQUENCY(Hz)
150mA
CIN=COUT1=1µF
160
CIN=COUT1=1µF
0
40
VOUT1=3.3V
180
OUTPUT VOLTAGE (V)
dB
-60
200
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
DROPOUT VOLTAG (mV)
-100
-90
Dropout Voltage
vs. Temperature
Dropout Voltage
vs. Output Current
Power Supply Rejection Ratio
(PSRR)
0
20 40 60 80
TEMPERATURE(°C)
4
100 120
-40
-20
0
20
40
60
80
100 120
TEMPERATURE(°C)
M9999-041610-A
Micrel, Inc.
MIC5387
Typical Characteristics (Continued)
Output Voltage (VOUT3=1.5V)
vs. Temperature
1.4
1.7
Current Limit
vs. InputVoltage
Output Voltage (VOUT=1.2V)
vs. Temperature
380
1.6
1.5
VIN=VEN2/3=2.5V
1.4
VOUT =1.5V
1.3
1.2
1.1
CIN=COUT3=1µF
VIN=VEN2/3=2.5V
VOUT =1.2V
0
20
320
VOUT2=1.8V
300
VEN2/3 =VIN
CIN=COUT1=COUT2 =COUT3 =1µF
1
1.3
-40 -20
VOUT3=1.5V
340
CIN=COUT3=1µF
IOUT3 =150mA
40
60
80
280
-40
100 120
-20
0
20
40
60
80
100 120
TEMPERATURE(°C)
TEMPERATURE(°C)
Output Noise
Spectral Density
2
2.5
3
3.5
4
4.5
INPUT VOLTAGE (V)
5
5.5
Output Noise
SpectralDensity
1
1
0.1
NOISE uV/√Hz
NOISE uV/√Hz
CURRENT LIMIT (mA)
OUTPUT VOLTAGE (V)
OUTPUT VOLTAG (V)
VOUT1=3.3V
360
VIN=VEN2/3=5V
VOUT3 =1.5V
0.01
COUT3=1µF
0.1
VIN =VEN2/3=5V
VOUT3=1.5V
COUT3=1µF
IOUT3=100µA
OUTPUT VOLTAGE
NOISE=152µVrms
IOUT3=150mA
OUTPUT VOLTAGE NOISE=125uVrms
0.001
0.01
10
100
1,000
10,000
FREQUENCY (Hz)
April 2010
100,000
10
100
1,000
10,000
FREQUENCY (Hz)
5
100,000
M9999-041610-A
Micrel, Inc.
MIC5387
Functional Characteristics
April 2010
6
M9999-041610-A
Micrel, Inc.
MIC5387
Block Diagram
April 2010
7
M9999-041610-A
Micrel, Inc.
MIC5387
Enable/Shutdown
The MIC5387 comes with an active-high enable (EN2/3)
pin that allows the regulator to be disabled for outputs 2
and 3. 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. The output OUT1 does not have an enable pin
and is always enabled when VIN is above the minimum
supply voltage of 2.5V.
Application Information
MIC5387 is a triple-output, low-noise 150mA LDO. The
MIC5387 regulator is fully protected from damage due to
fault conditions, offering linear current limiting and
thermal shutdown.
Input Capacitor
The MIC5387 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.
Thermal Considerations
The MIC5387 is designed to provide three outputs up to
150mA each 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 3.3V and the output voltages are 1.8V, 2.8V
and 2.8V each with an output current = 150mA. The
actual power dissipation of the regulator circuit can be
determined using the equation:
Output Capacitor
The MIC5387 requires an output capacitor of 1µF or
greater for each output 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.
PD = (VIN − VOUT1) I OUT1 +
(VIN − VOUT2) I OUT2 +
(VIN − VOUT3) I OUT3 + VIN IGND
As the MIC5387 is a CMOS device, the ground current is
typically <100µA over the load range, the power
dissipation contributed by the ground current is <1% and
may be ignored for this calculation:
PD = (3.3V − 1.8V)150mA + (3.3V-2.8V)150mA +
(3.3V − 2.8V)150mA
PD = 0.375W
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 ⎞
⎟
⎝ θJA
⎠
PD(MAX) = ⎜
No-Load Stability
Unlike many other voltage regulators, the MIC5387 will
remain stable and in regulation with no load. This is
especially important in CMOS RAM keep-alive
applications.
April 2010
TJ(MAX) = 125°C, the maximum junction temperature of the
die, and θJA thermal resistance = 92.4°C/W for the Thin
MLF® package.
8
M9999-041610-A
Micrel, Inc.
MIC5387
Therefore, the maximum ambient operating temperature
of 90.35°C is allowed in a 1.6mm x 1.6mm 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
Substituting PD for PD(max) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit.
The maximum power dissipation must not be exceeded
for proper operation.
For example, when operating the MIC5387-SGFYMT at
an input voltage of 3.3V and 450mA load with a
minimum footprint layout, the maximum ambient
operating temperature TA can be determined as follows:
0.375W = (125°C − TA) / (92.4°C/W)
TA = 90.35°C
April 2010
9
M9999-041610-A
Micrel, Inc.
MIC5387
Typical Application
Bill of Materials
Item
Part Number
C1,C2,C3,C4
C1005X5R1A105K
U1
MIC5387-xxxYMT
Manufacturer
(1)
TDK
Micrel, Inc.(2)
Description
Qty.
Capacitor, 1µF Ceramic, 10V, X5R, Size 0402
4
Ultra-Small Triple 150mA Output LDO
1
Notes:
1.
TDK: www.tdk.com
2.
Micrel, Inc.: www.micrel.com
April 2010
10
M9999-041610-A
Micrel, Inc.
MIC5387
PCB Layout Recommendations (1.6mm x 1.6mm Thin MLF®)
Top Layer
Bottom Layer
April 2010
11
M9999-041610-A
Micrel, Inc.
MIC5387
Package Information
6-Pin 1.6mm x 1.6mm Thin MLF® (MT)
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.
© 2010 Micrel, Incorporated.
April 2010
12
M9999-041610-A