MIC5512/14
Single 300mA LDO
in 1.6mm × 1.6mm Thin DFN Package
General Description
The MIC5512/14 is an advanced general-purpose LDO
ideal for powering general-purpose portable devices. The
MIC5512/14 family of products provides a high-
performance 300mA LDO in an ultra-small 1.6mm x
1.6mm Thin DFN package. The MIC5512 and MIC5514
LDOs include an auto-discharge feature on the output that
is activated when the enable pin is low. The MIC5514 have
an internal pull down resistor on the enable pin that will
disable the output when the enable pin is left floating, this
is ideal for applications where the control signal is floating
during processor boot up.
Ideal for battery-powered applications, the MIC5512/14
offers a typical 1% initial accuracy, low dropout voltage
(160mV at 300mA), and low ground current (typically
38µA). The MIC5512/14 can also be put into a zero-off-
mode current state, drawing virtually no current when
disabled.
The MIC5512/14 has an operating junction temperature
range of –40°C to 125°C.
Datasheets and support documentation are available on
Micrel’s web site at:
www.micrel.com.
Features
•
•
•
•
•
•
•
•
•
Input voltage range: 2.5V to 5.5V
Fixed output voltage range: 1.0V to 3.3V
300mA guaranteed output current
±1% initial output accuracy
Stable with 1µF ceramic output capacitors
Low dropout voltage: 160mV @ 300mA
Output discharge circuit
Internal enable pull down resistor (MIC5514)
Available in ultra-small 6-pin 1.6mm × 1.6mm Thin DFN
package
Applications
•
•
•
•
•
Smart phones
DSCs, GPS, PMPs, and PDAs
Medical devices
Portable electronics
5V systems
Typical Application
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 8, 2013
Revision 1.1
Micrel, Inc.
MIC5512/14
Ordering Information
Part Number
MIC5512-1.2YMT
MIC5512-1.8YMT
MIC5512-2.8YMT
MIC5512-3.3YMT
MIC5514-1.2YMT
MIC5514-1.8YMT
MIC5514-2.8YMT
MIC5514-3.0YMT
MIC5514-3.3YMT
Notes:
1. Other voltages are available. Contact Micrel for details.
2. Thin DFN ▲ = Pin 1 identifier.
3. Thin DFN is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
Marking
Code
7E
7D
7C
7A
B8
B7
A9
A8
A7
Output
(1)
Voltage
1.2V
1.8V
2.8V
3.3V
1.2V
1.8V
2.8V
3.0V
3.3V
Auto-
Discharge
YES
YES
YES
YES
YES
YES
YES
YES
YES
EN
Pull-down
NO
NO
NO
NO
YES
YES
YES
YES
YES
Temperature
Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Package
(2,3)
6-Pin 1.6mm x 1.6mm Thin DFN
6-Pin 1.6mm x 1.6mm Thin DFN
6-Pin 1.6mm x 1.6mm Thin DFN
6-Pin 1.6mm x 1.6mm Thin DFN
6-Pin 1.6mm x 1.6mm Thin DFN
6-Pin 1.6mm x 1.6mm Thin DFN
6-Pin 1.6mm x 1.6mm Thin DFN
6-Pin 1.6mm x 1.6mm Thin DFN
6-Pin 1.6mm x 1.6mm Thin DFN
Pin Configuration
6-Pin 1.6mm × 1.6mm Thin DFN (MT)
(Top View)
Pin Description
Pin Number
1
2, 5
3
4
6
EP
Pin Name
EN
NC
VIN
VOUT
GND
ePad
Pin Function
Enable Input: Active High. High = ON; Low = OFF. MIC5512 do not leave floating. MIC5514 has an
internal 4MΩ pull down resistor and will disable VOUT when EN is floating.
Not Connected.
Input Supply.
Output Voltage. When disabled the MIC5512/14 switches in an internal 25Ω load to discharge the
external capacitors.
Ground.
Exposed Heatsink Pad. Connect to GND for best performance.
April 8, 2013
2
Revision 1.1
Micrel, Inc.
MIC5512/14
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) .......................................... –0.3V to 6V
Enable Voltage (V
EN
). ........................................ –0.3V to V
IN
(3)
Power Dissipation (P
D
) ........................... Internally Limited
Lead Temperature (soldering, 10s) ............................ 260°C
Junction Temperature (T
J
) ........................ –40°C to +150°C
Storage Temperature (T
s
) ......................... –65°C to +150°C
(4)
ESD Rating .................................................................. 3kV
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
1.6mm × 1.6mm Thin DFN-6 (θ
JA
) .................. 92.4°C/W
Electrical Characteristics
(5)
V
IN
= V
EN
= V
OUT
+ 1V; C
IN
= C
OUT
= 1µF; I
OUT
= 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)
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 300mA
I
OUT
= 150mA
I
OUT
= 300mA
(8)
Min.
–2.0
–3.0
Typ.
±1
0.02
8
80
160
38
42
0.05
65
Max.
+2.0
+3.0
0.3
40
190
380
55
65
1
900
Units
%
%/V
mV
mV
µA
µA
dB
mA
µV
RMS
Ω
MΩ
(7)
Ground Pin Current
I
OUT
= 0mA
I
OUT
= 300mA
V
EN
= 0V
f = 1kHz; C
OUT
= 1µF
V
OUT
= 0V
C
OUT
= 1µF, 10Hz to 100kHz
V
EN
= 0V; V
IN
= 3.6V; I
OUT
= –3mA
MIC5514 Only
Logic Low
Logic High
V
EN
= 0V
V
EN
= 5.5V
V
EN
= 0V
V
EN
= 5.5V
C
OUT
= 1µF; I
OUT
= 150mA
1.2
400
Ground Pin Current in Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
Auto-Discharge NFET Resistance
Enable Input
Enable Pull-Down Resistor
Enable Input Voltage
Enable Input Current MIC5512
Enable Input Current MIC5514
Turn-On Time
630
175
25
4
0.2
0.01
0.01
0.01
1.4
50
1
1
1
2
125
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 are recommended. Human body model, 1.5kΩ in series with 100pF.
5. Specification for packaged product only.
6.
7.
8.
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.
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.
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 8, 2013
3
Revision 1.1
Micrel, Inc.
MIC5512/14
Typical Characteristics
Power Supply
Rejection Ratio
-100
-90
160
140
120
100
80
60
40
20
0
0
50
100
150
200
250
300
V
OUT
= 3.3V
C
IN
= C
OUT
= 1µF
Dropout Voltage
vs. Output Current
200
180
Dropout Voltage
vs.Temperature
DROPOUT VOLTAGE (mV)
DROPOUT VOLTAGE (mV)
300mA
-80
-70
I
OUT
= 100mA
160
140
120
100
80
60
40
20
0
-40
-20
0
20
40
60
80
100
120
50mA
150mA
V
OUT
= 3.3V
C
IN
= C
OUT
= 1µF
PSRR (dB)
-60
-50
-40
-30
-20
-10
0
10
10
100
1k
1,000
C
OUT
= 1µF
C
IN
= 1µF
V
IN
= 3.8V
V
OUT
= 2.8V
10k
100k
1M
10,000 100,000 1,000,000
I
OUT
= 300mA
FREQUENCY (Hz)
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
Ground Current
vs. Supply Voltage
50
300mA
Ground Current
vs. Load Current
46
45
50
48
Ground Current
vs. Temperature
300mA
GROUND CURRENT (µA)
GROUND CURRENT (µA)
44
43
42
41
40
39
38
37
V
IN
= V
EN
= V
OUT
+ 1V
V
OUT
= 3.3V
C
IN
= C
OUT
= 1µF
0
50
100
150
200
250
300
GROUND CURRENT (µA)
45
46
44
42
50mA
40
38
36
34
32
30
-40
-20
0
20
40
60
80
100
120
100µA
V
IN
= V
EN
= V
OUT
+ 1V
V
OUT
= 3.3V
C
IN
= C
OUT
= 1µF
150mA
40
35
100µA
30
V
EN
= V
IN
V
OUT
= 3.3V
C
IN
= C
OUT
= 1µF
2.5
3.0
3.5
4.0
4.5
5.0
5.5
25
20
36
SUPPLY VOLTAGE (V)
LOAD CURRENT (mA)
TEMPERATURE (°C)
Output Voltage
vs. Output Current
3.50
3.45
3.5
3.4
Output Voltage
vs. Supply Voltage
3.50
Output Voltage
vs. Temperature
OUTPUT VOLTAGE (V)
3.40
3.35
3.30
3.25
3.20
3.15
3.10
0
50
100
150
200
250
300
V
IN
= V
EN
= V
OUT
+ 1V
V
OUT
= 3.3V
C
IN
= C
OUT
= 1µF
OUTPUT VOLTAGE (V)
3.2
3.1
3.0
150mA
2.9
2.8
300mA
2.7
2.6
2.5
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V
IN
= V
EN
V
OUT
= 3.3V
C
IN
= C
OUT
= 1µF
OUTPUT VOLTAGE (V)
3.3
3.45
50mA
3.40
3.35
300mA
3.30
150mA
3.25
V
IN
= V
OUT
+ 1V
V
OUT
= 3.3V
C
IN
= C
OUT
= 1µF
-40
-20
0
20
40
60
80
100
120
3.20
OUTPUT CURRENT (mA)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
April 8, 2013
4
Revision 1.1
Micrel, Inc.
MIC5512/14
Typical Characteristics (Continued)
Current Limit
vs. Supply Voltage
750
700
CURRENT LIMIT (mA)
650
600
550
500
450
400
350
300
2.5
3
3.5
4
4.5
5
5.5
V
OUT
= 1.2V
C
IN
= C
OUT
= 1µF
SUPPLY VOLTAGE (V)
April 8, 2013
5
Revision 1.1
测试/测量
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