MIC5396/7/8/9
Low-Power Dual 300mA LDO in
1.2mm x 1.6mm Extra Thin DFN
General Description
The MIC5396/7/8/9 is an advanced dual LDO ideal for
powering general purpose portable devices. The
MIC5396/7/8/9
provides
two
high-performance,
independent 300mA LDOs in a single package. This
makes it possible to improve system efficiency by
providing two independent supply inputs that can be
optimized for each individual LDO. The MIC5396/7/8/9
also features a wide output voltage range down to 1.0V.
Its full feature set and low dropout voltage make it ideal for
battery-powered applications. The MIC5396/7/8/9 offers
2% accuracy, low dropout voltage (160mV at 300mA), and
low ground current (typically 42μA per LDO at full load).
The MIC5396/7/8/9 can also be put into a zero off mode
current state, drawing virtually no current when disabled.
When the MIC5397/9 is disabled an internal resistive load
is automatically applied to the output to discharge the
output capacitor. In addition, the MIC5398/9 offers an
internal enable pull-down resistor to ensure that the output
is disabled when the enable is in tri-state mode. These
LDO’s also offer fast transient response and high PSRR
while consuming a minimum operating current. The family
is available in a tiny 8-pin, 1.2mm x 1.6mm leadless Extra
Thin DFN package.
Data sheets and support documentation can be found on
Micrel’s web site at
www.micrel.com.
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
2.5V to 5.5V input voltage range
Independent power inputs
Output voltage range from 1V to 3.3V
Two 300mA outputs
High output accuracy (±2%)
Low quiescent current – 37µA typical/LDO
Stable with 1µF ceramic output capacitors
Low dropout voltage (160mV at 300mA)
Independent enable pins
Internal enable pull-down (MIC5398, MIC5399)
Output discharge circuit (MIC5397, MIC5399)
Thermal-shutdown protection
Current-limit protection
8-pin 1.2mm x 1.6mm Extra Thin DFN package
Applications
•
•
•
•
•
Camera phones
Mobile phones
DSC, GPS, PMP and PDAs
Portable medical devices
Portable electronics
_________________________________________________________________________________________________________________________
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
December 2012
M9999-120712-A
Micrel, Inc.
MIC5396/7/8/9
Ordering Information
Part Number
MIC5396-GMYMX
MIC5397-GPYMX
MIC5398-P4YMX
MIC5399-SSYMX
MIC5399-SMYMX
MIC5399-SGYMX
MIC5399-MMYMX
MIC5399-GPYMX
Notes:
1. Other voltages are available. Contact Micrel for details.
2. Extra Thin DFN is a GREEN RoHS-compliant package. Level finish is NiPdAu. Mold compound is Halogen Free.
3. Contact Micrel Marketing to order.
(3)
Marking
F2
D4
E5
H4
H6
H5
H7
H8
H1
(1)
V
OUT1
/V
OUT2
EN
Discharge
Circuit
––
–
X
X
X
X
X
X
X
Output
Discharge
Circuit
–
X
–
X
X
X
X
X
X
Junction Temp.
Range
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
Package
8-Pin 1.2x1.6 XTDFN
8-Pin 1.2x1.6 XTDFN
8-Pin 1.2x1.6 XTDFN
8-Pin 1.2x1.6 XTDFN
8-Pin 1.2x1.6 XTDFN
8-Pin 1.2x1.6 XTDFN
8-Pin 1.2x1.6 XTDFN
8-Pin 1.2x1.6 XTDFN
8-Pin 1.2x1.6 XTDFN
1.8V/2.8V
1.8V/3.0V
3.0V/1.2V
3.3V/3.3V
3.3V/2.8V
3.3V/1.8V
2.8V/2.8V
1.8V/3.0V
1.8V/2.8V
MIC5399-GMYMX
Pin Configuration
8-Pin 1.2mm x 1.6mm Extra Thin DFN (MX)
Pin Description
Pin Number
1, 4
2
3
5
6
7
8
EP
Pin Name
GND
VOUT1
VOUT2
EN2
VIN2
VIN1
EN1
ePad
Pin Function
Ground.
Output regulator 1: Connect a capacitor to ground.
Output regulator 2: Connect a capacitor to ground.
Enable input for regulator 2: Active-high input. Logic high = On; Logic low = Off. MIC5396/7 Do
not leave floating. MIC5398/9 internal pull-down resistor, tri-state = Off.
Input voltage supply for regulator 2: Connect a capacitor to ground.
Input voltage supply for regulator 1: Connect a capacitor to ground.
Enable input for regulator 1. Active-high input. Logic high = On; Logic low = Off. MIC5396/7 Do
not leave floating. MIC5398/9 internal pull-down resistor, tri-state = Off.
Heatsink pad: Connect to ground.
December 2012
2
M9999-120712-A
Micrel, Inc.
MIC5396/7/8/9
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN1,
V
IN2
) ............................... –0.3V to +6V
Enable Voltage (V
EN1,
V
EN2
). .............................. –0.3V to V
IN
(3)
Power Dissipation (P
D
) ........................... Internally Limited
Lead Temperature (soldering, 10sec.) ....................... 260°C
Junction Temperature (T
J
) ........................ –40°C to +125°C
Storage Temperature (T
s
) ......................... –65°C to +150°C
(4)
ESD Rating .................................................................. 3kV
Operating Ratings
(2)
Supply Voltage (V
IN1,
V
IN2
) .............................. +2.5V to 5.5V
Enable Voltage (V
EN1,
V
EN2
). ................................... 0V to V
IN
Junction Temperature (T
J
) ........................ –40°C to +125°C
Junction Thermal Resistance
1.2mm x 1.6mm Extra Thin DFN (θ
JA
).......... 172.6°C/W
Electrical Characteristics
(4)
V
IN1
= V
EN1
= V
OUT1
+ 1V, V
IN2
= V
EN2
= V
OUT2
+ 1V, I
OUT1
= I
OUT2
= 100µA; C
IN1
= C
IN2
= C
OUT1
= C
OUT2
= 1µF;
T
J
= 25°C.
Bold
values indicate –40°C to +125°C, unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Dropout Voltage
Ground Pin Current
Condition
Variation from nominal V
OUT
Variation from nominal V
OUT
V
IN
= V
OUT
+1V to 5.5V, I
OUT
= 100µA
I
OUT
= 100µA to 300mA
I
OUT
= 150mA
I
OUT
= 300mA
V
EN1
= High; V
EN2
= Low; I
OUT1
= 0mA
V
EN1
= Low; V
EN2
= High; I
OUT2
= 0mA
V
EN1
= V
EN2
= High; I
OUT1
= I
OUT2
= 0mA
V
EN1
= High; V
EN2
= Low; I
OUT1
= 300mA
V
EN1
= Low; V
EN2
= High; I
OUT2
= 300mA
V
EN1
= V
EN2
= High; I
OUT1
= I
OUT2
= 300mA
Shutdown Current
Ripple Rejection
Current Limit
Output Voltage Noise
Auto-Discharge NFET
Resistance
Enable Inputs (EN1/EN2)
Enable Pull-Down Resistor
Enable Input Voltage
Enable Input Current
MIC5396, MIC5397
Enable Input Current
MIC5398, MIC5399
Turn-on Time
Notes:
1. Exceeding the absolute maximum ratings can 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.
Min
–2.0
–3.0
Typ
Max
+2.0
+3.0
Units
%
%
%/V
mV
mV
mV
µA
µA
µA
µA
µA
µA
µA
dB
mA
µV
RMS
Ω
0.02
8
80
160
37
37
74
42
42
84
0.05
60
400
630
93
25
0.3
40
190
380
55
55
110
65
65
130
1
900
V
EN1
= V
EN2
= 0V
f = 1kHz; C
OUT
= 1µF
V
OUT
= 0V
C
OUT
= 1µF, 10Hz to 100kHz
MIC5397, MIC5399 Only; V
EN1
= V
EN2
= 0V; V
IN
= 3.6V;
I
OUT
= –3mA
MIC5398, MIC5399
Logic Low
Logic High
V
EN
= 0V
V
EN
= 5.5V
V
EN
= 0V
V
EN
= 5.5V
C
OUT
= 1µF
1.2
4
0.2
0.01
0.01
0.01
1.4
50
1
1
1
2
125
MΩ
V
V
µA
µA
µA
µA
µs
December 2012
3
M9999-120712-A
Micrel, Inc.
MIC5396/7/8/9
Typical Characteristics
Power Supply
Rejection Ratio
-100
-90
-80
-70
150mA
3.0
Output Voltage
vs. Input Voltage
3.0
2.9
Output Voltage
vs. Output Current
OUTPUT VOLTAGE (V)
LDO2-100µA
2.0
OUTPUT VOLTAGE (V)
2.5
LDO2-300mA
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
V
IN2
= V
EN2
= V
OUT2
+1V
V
OUT2
= 2.8V
C
IN
= C
OUT
= 1µF
0
50
100
150
200
250
300
PSRR (dB)
-60
-50
-40
-30
-20
-10
0
10
10
100
100
1K
1,000
300mA
100µA
1.5
LDO1-100µA
1.0
V
OUT1
= 1.8V
V
OUT2
= 2.8V
C
IN
= C
OUT
= 1µF
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V
IN
= 2.8V
V
OUT
=1.8V
C
OUT
=1µF
10K
100K
1M
10,000 100,000 1,000,000
0.5
0.0
2.0
FREQUENCY (Hz)
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
Ground Current
vs. Input Voltage
60
Ground Current
vs. Output Current
100
90
90
80
Ground Current
vs. Temperature
DUAL OUTPUT
GROUND CURRENT (µA)
80
70
60
GROUND CURRENT (µA)
50
300mA
GROUND CURRENT ( µA)
DUAL OUTPUT
70
60
50
40
30
20
10
0
V
IN
= V
EN
= 3.8V
V
OUT
= 2.8V
C
IN
=C
OUT
= 1µF
-40
-20
0
20
40
60
80
100
120
SINGLE OUTPUT
40
SINGLE OUTPUT
50
40
30
20
10
0
V
EN
= 3.8V
V
IN
= 3.8V
V
OUT
=2.8V
C
IN
= C
OUT
= 1µF
0
50
100
150
200
250
300
30
150mA
150mA
100µA
20
10
V
OUT
=2.8V
C
IN
= C
OUT
= 1µF
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
Dropout Voltage
vs. Output Current
180
160
240
220
Dropout Voltage
vs. Temperature
300mA
900
850
Current Limit
vs. Input Voltage
DROPOUT VOLTAGE (mV)
DROPOUT VOLTAGE (mV)
200
180
160
140
120
100
80
60
40
20
0
C
IN
= C
OUT
=1µF
10mA
150mA
CURRENT LIMIT (mA)
140
120
100
80
60
40
20
0
0
50
100
150
200
250
300
V
OUT
= 2.8V
C
IN
= C
OUT
= 1µF
800
750
700
650
600
550
500
450
400
2.5
3.0
3.5
4.0
V
OUT1
= 1.8V
V
OUT2
= 2.8V
C
IN
= C
OUT
= 1µF
4.5
5.0
5.5
LDO1
LDO2
-40
-20
0
20
40
60
80
100
120
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
INPUT VOLTAGE (V)
December 2012
4
M9999-120712-A
Micrel, Inc.
MIC5396/7/8/9
Typical Characteristics (Continued)
Output Noise
Spectral Density
10
1
V
IN
=V
EN
= 4.5V
C
OUT
= 1µF
V
OUT
= 1.8V
NOISE (µV/√Hz)
0.1
0.01
0.001
0.0001
10
10
100
100
1,000
1K
10,000
10K
100,000 1,000,00010,000,000
100K
1M
10M
FREQUENCY (Hz)
December 2012
5
M9999-120712-A
嵌入式系统
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