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PDF MIC5320 Data sheet ( Hoja de datos )
| Número de pieza | MIC5320 | |
| Descripción | High Performance 150mA uCap ULDO | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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MIC5320
Dual, High Performance 150mA µCap ULDO™
General Description
The MIC5320 is a tiny Dual Ultra Low-Dropout
(ULDO™) linear regulator ideally suited for portable
electronics. It is ideal for general purpose/ digital
applications which require high power supply ripple
rejection (PSRR) >65dB, eliminating the need for a
bypass capacitor and providing two enable pins for
maximum flexibility. The MIC5320 integrates two high-
performance; 150mA ULDOs into a tiny 6-pin 1.6mm x
1.6mm leadless MLF® package, which provides
exceptional thermal package characteristics.
The MIC5320 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 cellular phone camera modules,
imaging sensors for digital still cameras, PDAs, MP3
players and WebCam applications.
The MIC5320 ULDO™ is available in fixed-output
voltages in the tiny 6-pin 1.6mm x 1.6mm leadless
MLF® package which is only 2.56mm2 in area, less
than 30% the area of the SOT-23, TSOP and MLF®
3x3 packages. It’s also available in the thin SOT-23-6
lead package. Additional voltage options are
available. For more information, contact Micrel
marketing department.
Data sheets and supporting 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™ 35mV @
150mA
• Tiny 6-pin 1.6mm x 1.6mm MLF® leadless
package
• Low cost TSOT-23-6 package
• Independent enable pins
• PSRR – >65dB on each LDO
• 150mA output current per LDO
• µCap stable with 1µF ceramic capacitor
• Low quiescent current – 85µA per output
• Fast turn-on time – 30µs
• Thermal shutdown protection
• Current limit protection
Applications
• Mobile phones
• PDAs
• GPS receivers
• Portable electronics
• Portable media players
• Digital still and video cameras
Typical Application
MIC5320-x.xYML
VIN VOUT 1
Rx/Synth
EN 1 VOUT 2
Tx
EN 2
1µF
GND
RF
1µF 1µF Transceiver
RF Power Supply Circuit
ULDO is a trademark of Micrel, Inc.
MLF and MicroLeadFrame are registered trademarks of Amkor Technologies, 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
July 2006
M9999-073106
1 page  
Micrel, Inc.
MIC5320
Absolute Maximum Ratings(1)
Supply Voltage (VIN) .....................................0V to +6V
Enable Input Voltage (VEN)...........................
Power Dissipation………………… Internally
0V to +6V
Limited(3)
Lead Temperature (soldering, 3sec) ..................260°C
SEStoDraRgeatTinegm(4p) e..r..a..t.u..r.e...(.T..S..)...................................–..6..5..°.C....t.o...+..1..5.20k°CV
Operating Ratings(2)
Supply Voltage (VIN).............................. +2.3V to +5.5V
Enable Input Voltage (VEN).............................. 0V to VIN
Junction Temperature (TJ) ................. –40°C to +125°C
Junction Thermal Resistance
MLF-6 (θJA).............................................. 100°C/W
TSOT-6 (θJA) ........................................... 235°C/W
Electrical Characteristics(5)
VIN = EN1 = EN2 = VOUT + 1.0V; higher of the two regulator outputs, IOUTLDO1 = IOUTLDO2 = 100µA; COUT1 = COUT2 = 1µF;
TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted.
Parameter
Conditions
Min Typ Max Units
Output Voltage Accuracy
Variation from nominal VOUT
-2.0
+2.0
%
Variation from nominal VOUT; –40°C to +125°C
-3.0 +3.0 %
Line Regulation
VIN = VOUT + 1V to 5.5V; IOUT = 100µA
0.02 0.3
0.6
%/V
%/V
Load Regulation
Dropout Voltage (6)
Ground Current
IOUT = 100µA to 150mA
IOUT = 100µA
IOUT = 50mA
IOUT = 100mA
IOUT = 150mA
EN1 = High; EN2 = Low; IOUT = 100µA to 150mA
EN1 = Low; EN2 = High; IOUT = 100µA to 150mA
EN1 = EN2 = High; IOUT1 = 150mA, IOUT2 = 150mA
0.5 2
0.1
12 50
25 75
35 100
85 120
85 120
150 190
%
mV
mV
mV
mV
µA
µA
µA
Ground Current in Shutdown EN1 = EN2 = 0V
0.01
2
µA
Ripple Rejection
Current Limit
f = 1kHz; COUT = 1.0µF
f=20kHz; COUT = 1.0µF
VOUT = 0V
65
45
300 550 950
dB
dB
mA
Output Voltage Noise
Enable Inputs (EN1 / EN2)
COUT = 1.0µF; 10Hz to 100KHz
90 µVRMS
Enable Input Voltage
Logic Low
0.2 V
Logic High
1.1 V
Enable Input Current
VIL ≤ 0.2V
VIH ≥ 1.0V
Turn-on Time (See Timing Diagram)
0.01
1
0.01
1
µA
µA
Turn-on Time (LDO1 and 2)
Notes:
COUT = 1.0µF
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
30 100
µs
3. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = TJ(max) – TA) / θJA. 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 VOUT. For outputs below 2.3V,
the dropout voltage is the input-to-output differential with the minimum input voltage 2.3V.
July 2006
5 M9999-073106
5 Page 
Micrel, Inc.
For example, when operating the MIC5320-MFYML at
an input voltage of 3.3V and 150mA loads at each
output with a minimum footprint layout, the maximum
ambient operating temperature TA can be determined
as follows:
0.345W = (125°C – TA)/(100°C/W)
TA=90.5°C
MIC5320
Therefore, a 2.8V/1.5V application with 150mA at
each output current can accept an ambient operating
temperature of 90.5°C in a 1.6mm x 1.6mm MLF®
package. For a full discussion of heat sinking and
thermal effects on voltage regulators, refer to the
“Regulator Thermals” section of Micrel’s Designing
with Low-Dropout Voltage Regulators handbook. This
information can be found on Micrel's website at:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
July 2006
11 M9999-073106
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MIC5320.PDF ] | |
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