MIC5330
Dual, 300mA µCap LDO in 2mm x 2mm MLF
®
General Description
The MIC5330 is a tiny Dual Ultra Low-Dropout
(ULDO™) linear regulator ideally suited for portable
electronics due to its high power supply ripple
rejection (PSRR) and ultra low output noise. The
MIC5330 integrates two high-performance; 300mA
ULDOs into a tiny 2mm x 2mm leadless MLF
®
package, which provides exceptional thermal package
characteristics.
The MIC5330 is a µCap design which enables
operation with very small ceramic output capacitors
for stability, thereby reducing required board space
and component cost. The combination of extremely
low-drop-out voltage, high power supply rejection and
exceptional thermal package characteristics makes it
ideal for powering RF/noise sensitive circuitry, cellular
phone camera modules, imaging sensors for digital
still cameras, PDAs, MP3 players and WebCam
applications.
The MIC5330 ULDO™ is available in fixed-output
voltages in the tiny 8-pin 2mm x 2mm leadless MLF
®
package which occupies less than half the board area
of a single SOT-6 package. Additional voltage options
are available. For more information, contact Micrel
marketing department.
Data sheets and support documentation can be found
on Micrel’s web site at www.micrel.com.
Features
•
•
•
•
•
•
•
•
•
•
•
•
2.3V to 5.5V input voltage range
Ultra-low dropout voltage ULDO™ 75mV @ 300mA
High PSRR - >70dB @ 1KHz
Ultra-low output noise: 30µV
RMS
±2% initial output accuracy
Tiny 8-pin 2mm x 2mm MLF
®
leadless package
Excellent Load/Line transient response
Fast start-up time: 30µs
300mA output current per LDO
Thermal shutdown protection
Low quiescent current: 75µA per output
Current limit protection
Applications
•
•
•
•
•
•
Mobile phones
PDAs
GPS receivers
Portable electronics
Portable media players
Digital still and video cameras
Typical Application
MIC5330-x.xYML
VIN
EN 1
EN 2
1µF
BYP
0.1µF
GND
1µF
1µF
RF
Transceiver
VOUT 1
VOUT 2
Rx/Synth
Tx
RF Power Supply Circuit
ULDO is a trademark of Micrel, Inc.
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
August 2006
M9999-080306
Micrel, Inc.
MIC5330
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) .....................................0V to +6V
Enable Input Voltage (V
EN
)...........................0V to +6V
Power Dissipation...........................Internally Limited
(3)
Lead Temperature (soldering, 3sec ...................260°C
Storage Temperature (T
S
) ................. -65°C to +150°C
ESD Rating
(4)
.........................................................2kV
Operating Ratings
(2)
Supply voltage (V
IN
)............................... +2.3V to +5.5V
Enable Input Voltage (V
EN
).............................. 0V to V
IN
Junction Temperature ......................... -40°C to +125°C
Junction Thermal Resistance
MLF-8 (
θ
JA
) ............................................... 90°C/W
Electrical Characteristics
(5)
V
IN
= EN1 = EN2 = V
OUT
+ 1.0V; higher of the two regulator outputs, I
OUTLDO1
= I
OUTLDO2
= 100µA; C
OUT1
= C
OUT2
= 1µF;
C
BYP
= 0.1µF; T
J
= 25°C,
bold
values indicate –40°C
≤
T
J
≤
+125°C, unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Dropout Voltage (Note
6)
Conditions
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
= 100µA
I
OUT
= 100mA
I
OUT
= 150mA
I
OUT
= 300mA
Ground Current
EN1 = High; EN2 = Low; I
OUT
= 100µA to 300mA
EN1 = Low; EN2 = High; I
OUT
= 100µA to 300mA
EN1 = EN2 = High; I
OUT1
= 300mA, I
OUT2
= 300mA
Ground Current in Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
Enable Inputs (EN1 / EN2)
Enable Input Voltage
Enable Input Current
Logic Low
Logic High
V
IL
≤
0.2V
V
IH
≥
1.0V
Turn-on Time (See Timing Diagram)
Turn-on Time (LDO1 and 2)
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, 1.5k in series with 100pF.
5. Specification for packaged product only.
6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal V
OUT
. For outputs below
2.3V, the dropout voltage is the input-to-output differential with the minimum input voltage 2.3V.
Min
-2.0
-3.0
Typ
Max
+2.0
+3.0
Units
%
%
%/V
%/V
%
mV
0.02
0.5
0.1
25
35
75
85
85
150
0.01
70
65
350
550
30
0.3
0.6
75
100
200
120
120
200
2
mV
mV
mV
µA
µA
µA
µA
dB
dB
EN1 = EN2 = 0V
f = 1kHz; C
OUT
= 1.0µF; C
BYP
= 0.1µF
f = 20kHz; C
OUT
= 1.0µF; C
BYP
= 0.1µF
V
OUT
= 0V
C
OUT
= 1.0µF; C
BYP
= 0.1µF; 10Hz to 100kHz
950
mA
µV
RMS
0.2
1.1
0.01
0.01
30
100
V
V
µA
µA
µs
C
OUT
= 1.0µF; C
BYP
= 0.01µF
August 2006
5
M9999-080306
51单片机
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