MIC5380/1
High Performance Dual 150mA LDO
1mm x 1mm Thin MLF
®
General Description
The MIC5380/1 is an advanced dual LDO ideal for
powering space constrained portable devices. The
MIC5380/1 provides two independently controlled, high
performance 150mA LDOs in an ultra small 1mm x 1mm
®
Thin MLF package.
Ideal for battery powered applications, the MIC5380/1
offers ±1% typical accuracy, low dropout voltage (155mV
at 150mA) and low ground current. The MIC5380/1 can
also be put into a zero-off-mode current state, drawing
virtually no current when disabled.
The MIC5380/1 offers fast transient response and high
PSRR while consuming minimal operating current. When
the MIC5381 is disabled an internal resistive load is
automatically applied to the output to discharge the output
capacitor.
The MIC5380/1 is available with fixed output voltages in a
®
lead-free (RoHS compliant) 6-pin 1mm x 1mm Thin MLF
package.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
•
•
•
•
•
•
•
•
•
•
•
6-pin 1mm x 1mm Thin MLF package
2.5V to 5.5V input voltage range
150mA output current per LDO
High output accuracy ±1% typical
Low quiescent current 32µA per LDO
Stable with 0402 1µF ceramic output capacitors
Low dropout voltage 155mV at 150mA
Output discharge circuit on MIC5381
Independent enable pins
Thermal shutdown protection
Current limit protection
®
Applications
•
•
•
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Bluetooth headsets
Mobile phones
GPS, PMP, PDAs , DSCs
USB thumb drive
Medical handheld
Portable handheld electronics
___________________________________________________________________________________________________________
Typical Application
MIC5380/1-xxYFT
VIN
EN1
VBAT
1µF
EN2
GND
VOUT1
VOUT2
1µF
1µF
I/O
VCORE
Camera DSP Power Supply Circuit
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
November 2008
M9999-110608-A
Micrel, Inc.
MIC5380/1
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) ........................................ –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 .................................................................. 2kV
Operating Ratings
(2)
Supply Voltage (V
IN
)....................................... +2.5V to 5.5V
Enable Voltage (V
EN1,
V
EN2
)............................... –0.3V to V
IN
Junction Temperature (T
J
) ........................ –40°C to +125°C
Junction Thermal Resistance
1mm x 1mm Thin MLF-6 (
θ
JA
) .........................150°C/W
Electrical Characteristics
(5)
V
IN
= V
EN1
= V
EN2
= V
OUT
+ 1V; higher of the two regulator outputs; I
OUTLDO1
= I
OUTLDO2
= 100µA; C
OUT1
= C
OUT2
= 1µF;
T
J
= 25°C,
bold
values indicate –40°C to +125°C, unless noted.
Parameter
Condition
Min
–3.0
Typ
Max
+3.0
Units
Output Voltage Accuracy
Line Regulation
Load Regulation
Dropout Voltage
Ground Pin Current
Variation from nominal V
OUT
Variation from nominal V
OUT
; –40°C to +85°C
V
IN
= V
OUT
+1V to 5.5V, I
OUT
= 100µA
I
OUT
= 100µA to 150mA
I
OUT
= 50mA
I
OUT
= 150mA
V
EN1
= High; V
EN2
= Low; I
OUT
= 0mA
V
EN1
= Low; V
EN2
= High; I
OUT
= 0mA
V
EN1
= V
EN2
= High; I
OUT1
= I
OUT2
= 0mA
±1
0.02
0.3
55
155
32
32
59
0.05
60
200
325
200
30
550
0.3
%
%
%/V
%
mV
mV
µA
µA
µA
µA
dB
mA
µV
RMS
Ω
1
110
310
45
45
85
Ground Pin Current in
Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
Auto-Discharge NFET
Resistance
Enable Inputs (EN1/EN2)
V
EN1
= V
EN2
= 0V
f = 1kHz; C
OUT
= 1µF
V
OUT
= 0V
C
OUT
= 1µF, 10Hz to 100kHz
MIC5381 Only; V
EN1
= V
EN2
= 0V; V
IN
= 3.6V
1
Enable Input Voltage
Enable Input Current
Turn-on Time
Notes:
Logic Low
Logic High
V
IL
≤
0.2V
V
IH
≥
1.2V
C
OUT
= 1µF
1.2
0.2
V
V
µA
µA
µs
0.01
0.01
50
1
1
125
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.
November 2008
5
M9999-110608-A
单片机
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