MIC5385
Ultra Small Triple 150mA Output LDO
General Description
The MIC5385 is an advanced general purpose triple linear
regulator offering high power supply rejection (PSRR) in
an ultra-small 2mm x 2mm 8 pin Thin MLF
®
package. The
MIC5385 is capable of sourcing 150mA for each output
and offers high PSRR making it an ideal solution for any
portable electronic application.
Ideal for battery powered applications, the MIC5385 offers
2% initial accuracy, low dropout voltage (180mV @
150mA), and low ground current (typically 32µA per
output). The MIC5385 can also be put into a zero-off-mode
current state, drawing virtually no current when disabled.
The MIC5385 is available in a lead-free (RoHS compliant)
2mm x 2mm 8 pin Thin MLF
®
occupying only 4mm
2
of
PCB area, a 33% reduction in board area compared to a
3mm x 2mm Thin MLF
®
package.
The MIC5385 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.
Features
•
•
•
•
•
•
•
•
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 tiny 2mm x 2mm Thin MLF
®
Applications
•
•
•
•
Mobile phones
Digital cameras
GPS, PDAs, PMP, handhelds
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
December 2009
M9999-122109-A
Micrel, Inc.
MIC5385
Ordering Information
Part Number
MIC5385-SGFYMT
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.
®
®
Marking Code
ZN1
V
OUT1
3.3V
V
OUT2
1.8V
V
OUT3
1.5V
Temperature Range
–40°C to +125°C
Package
8-Pin 2mm x 2mm Thin MLF
®
Pin Configuration
8-Pin 2mm x 2mm Thin MLF
®
(MT)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
EP
Pin Names
EN3
IN
EN2
EN1
OUT2
OUT1
OUT3
GND
HS Pad
Pin Function
Enable Input 3: Enables LDO3, Active High. High = ON; Low = OFF. Do not leave floating.
Input supply for LDO1, 2 and 3.
Enable Input 2: Enables LDO2, Active High. High = ON; Low = OFF. Do not leave floating.
Enable Input 1: Enables LDO1, Active High. High = ON; Low = OFF. Do not leave floating.
Output Voltage for LDO2.
Output Voltage for LDO1.
Output Voltage for LDO3.
Ground for LDO1, 2 and 3.
Exposed Heastsink Pad. (connect to Ground plane for best thermal).
December 2009
2
M9999-122109-A
Micrel, Inc.
MIC5385
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) ........................................... -0.3V to 6V
Enable Voltage (V
EN
)..........................................-0.3V to V
IN
Power Dissipation (P
D
) ........................... Internally Limited
(3)
Lead Temperature (soldering, 3µsec)........................ 260°C
Junction Temperature (T
J
) ........................–40°C to +150°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
2mm x 2mm Thin MLF
®
(θ
JA
).............................90°C/W
Electrical Characteristics
(5)
V
IN
= V
EN1
= V
EN2
= V
EN3
= V
OUT
+ 1V; highest of the three outputs; C
IN
= C
OUT1
= C
OUT2
= C
OUT3
= 1µF; I
OUT1
= I
OUT2
= I
OUT3
= 100µA; T
J
= 25°C,
bold
values indicate –40°C to +125°C, unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Dropout Voltage
(6)
(7)
Condition
Variation from nominal V
OUT
Variation from nominal V
OUT
; –40°C to +125°C
V
IN
= V
OUT
+1V to 5.5V; I
OUT
= 100µA
I
OUT
= 100µA to 150mA
I
OUT
= 50mA; V
OUT
≥
2.8V
I
OUT
= 150mA; V
OUT
≥
2.8V
I
OUT
= 50mA; V
OUT
< 2.8V
I
OUT
= 150mA; V
OUT
< 2.8V
Min
–2.0
–3.0
Typ
Max
+2.0
+3.0
Units
%
%
%
%
mV
mV
mV
mV
µA
µA
µA
dB
dB
0.02
0.65
55
155
60
180
32
96
0.05
70
50
200
325
200
0.3
110
310
135
380
120
1
Ground Pin Current
(8)
I
OUT
= 0mA; V
OUT
> 1.3V, Single output enabled
I
OUT
= 0mA; V
OUT
> 1.3V, V
EN1
=V
EN2
= V
EN3
≥
1.2V
V
EN
1=V
EN
2= V
EN
3≤ 0.2V
f = up to 1kHz; C
OUT
= 1µF; V
OUT
< 2.5V
f = 1kHz – 10kHz; C
OUT
= 1µ F; V
OUT
< 2.5V
V
OUT
= 0V
C
OUT
= 1µF, 10Hz to 100kHz
Logic Low
Logic High
V
IL
≤
0.2V
V
IH
≥
1.2V
C
OUT
= 1µF; I
OUT
= 150mA
1.2
Ground Pin Current in Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
Enable Input
Enable Input Voltage
EN1, EN2, EN3
Enable Input Current
EN1, EN2, EN3
Turn-on Time
550
mA
µV
RMS
0.2
0.01
0.01
50
1
1
125
V
V
µA
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 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.
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.
December 2009
3
M9999-122109-A
Micrel, Inc.
MIC5385
Typical Characteristics
Power Supply Rejection Ratio
-100
-90
-80
-70
Dropout Voltage vs Output Current
160
200
180
Dropout Voltage (mV)
160
140
120
100
80
60
40
20
0
Dropout Voltage vs Temperature
150mA
100µA
140
Dropout Voltage (mV)
120
100
80
60
40
20
0
0
25
50
75
V
OUT1
= 3.3V
C
IN
= C
OUT1
= 1µF
100mA
50mA
Gain (dB)
-60
-50
-40
-30
-20
-10
0
10
100
1000
10000
100000
1000000
150mA
V
OUT
= 1.5V
C
OUT
= 1µF
10mA
100
125
150
-40
-20
0
20
40
60
80
100 120
Frequency(Hz)
Output Current (mA)
Temperature (°C)
Ground Current vs Supply Voltage
(single output)
42
42
40
38
V
IN
= V
EN2
36
34
32
30
28
2.5
3
3.5
4
4.5
5
5.5
150mA
100µA
V
EN1
= V
EN3
= 0V
V
OUT2
= 1.8V
C
IN
= C
OUT2
= 1µF
50mA
40
Ground Current vs Supply Voltage
(single output)
150mA
Ground Current vs Supply Voltage
(All outputs)
120
115
110
V
IN
= V
EN1
= V
EN2
= V
EN3
150mA
50mA
Ground Current (µA)
Ground Current (µA)
38
36
34
32
30
28
2.5
3
3.5
4
4.5
5
5.5
100µA
50mA
V
IN
= V
EN3
V
EN1
= V
EN2
= 0V
V
OUT3
= 1.5V
C
IN
= C
OUT3
= 1µF
Ground Current (µA)
105
100
95
90
2.5
3
100µA
V
OUT1
= 3.3V,
V
OUT2
= 1.8V,
V
OUT3
= 1.5V
C
IN
= C
OUT1
= C
OUT2
= C
OUT3
= 1µF
3.5
4
4.5
5
5.5
Supply Voltage(V)
Supply Voltage(V)
Supply Voltage(V)
Ground Current vs Temperature
(single output)
41
39
150mA
Output Voltage vs. Supply Voltage
(V
OUT
= 3.3V)
3.5
3.4
3.3
Output Voltage (V)
3.2
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.5
3
3.5
V
EN1
= V
IN
C
IN
= C
OUT1
= 1µF
V
OUT1
= 3.3V
150mA
100µA
50mA
Output Voltage vs Supply Voltage
(V
OUT
= 1.8V)
1.9
Ground Current (µA)
35
33
31
29
27
25
-40
-20
50mA
Output Voltage (V)
37
1.85
1mA
1.8
V
EN2
= V
IN
150mA
50mA
V
OUT2
= 1.8V
C
IN
= C
OUT2
= 1µF
1.7
V
IN
= V
EN1
= 4.3V
100µA
V
EN2
= V
EN3
= 0V
V
OUT1
= 3.3V
C
OUT1
= 1µF
0
20
40
60
80
100 120
1.75
4
4.5
5
5.5
2.5
3
3.5
4
4.5
5
5.5
Temperature(°C)
Supply Voltage (V)
Supply Voltage (V)
Output Voltage vs Supply Voltage
(V
OUT
= 1.5V)
1.6
3.5
3.4
Output Voltage(V)
3.3
3.2
3.1
3
Output Voltage vs Temperature
(V
OUT
= 3.3V)
Output Voltage vs Temperature
(V
OUT
= 1.8V)
2.2
Output Voltage (V)
1.5
50mA
150mA
V
EN3
= V
IN
V
OUT3
= 1.5V
C
IN
= C
OUT3
= 1µF
Output Voltage (V)
1.55
1mA
2
1.8
V
IN
= V
EN2
= V
OUT2
+1V
1.6
V
OUT2
= 1.8V
C
IN
= C
OUT2
= 1µF
I
OUT2
= 150mA
1.4
-40 -25 -10 5
20 35 50 65 80 95 110 125
Temperature (°C)
V
IN
= V
EN1
= V
OUT1
+1V
V
OUT1
= 3.3V
C
IN
= C
OUT1
= 1µF
I
OUT1
= 150mA
-40 -25 -10 5
20 35 50 65 80 95 110 125
1.45
1.4
2.5
3
3.5
4
4.5
5
5.5
Supply Voltage (V)
Temperature (°C)
December 2009
4
M9999-122109-A
Micrel, Inc.
MIC5385
Typical Characteristics
(Continued)
Output Voltage vs Temperature
(V
OUT
= 1.5V)
Current Limit vs. Input Voltage
460
440
Current Limit (mA)
V
EN1
= V
EN2
= V
EN3
= V
IN
C
IN
= C
OUT1
= C
OUT2
= C
OUT3
= 1µF
1
Output Noise Spectral Density
1.7
1.6
Output Voltage(V)
420
400
380
360
340
320
V
OUT2
= 1.8V
V
OUT1
= 3.3V
0.001
Noise µV/√Hz
0.1
V
OUT3
= 1.5V
1.5
V
IN
= V
EN3
= V
OUT3
+1V
1.4
V
OUT3
= 1.5V
C
IN
= C
OUT3
= 1µF
I
OUT3
= 150mA
1.3
-40
-20
0
20
40
60
80
100 120
Temperature (°C)
V
IN
= V
EN3
=
5.38V
V
OUT3
= 1.5V
C
OUT3
= 1µF
I
OUT3
= 100µA
Output Voltage-
Noise=152µVrms
0.01
300
2
3
4
Input Voltage (V)
5
6
10
100
1,000
10,000
100,000 1,000,000
Frequency (Hz)
Output Noise Spectral Density
1
Noise µV/√Hz
0.1
V
IN
= V
EN3
= 5.36V
V
OUT3
= 1.5V
C
OUT3
= 1µF
I
OUT3
= 150mA
Output vol
tage
Noise = 127µVrms
0.01
10
100
1,000
10,000
100,000 1,000,000
Frequency (Hz)
December 2009
5
M9999-122109-A
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