MIC5392-3.0/2.8YMX [MICROCHIP]
FIXED POSITIVE LDO REGULATOR;
| 型号： | MIC5392-3.0/2.8YMX |
| 厂家： | 
MICROCHIP |
| 描述： | FIXED POSITIVE LDO REGULATOR |
| 文件： | 总15页 (文件大小：626K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC5392/3
High-Performance Dual 150mA LDO
General Description
Features
The MIC5392/3 is a tiny dual low-dropout linear regulator
ideally suited for portable electronics. It is ideal for general
purpose/digital applications which require high-power
supply ripple rejection (PSRR) >60dB, eliminating the need
for a bypass capacitor and providing two enable pins for
maximum flexibility. The MIC5392/3 integrates two high-
performance; 150mA LDOs into a tiny 6-pin, 1.2mm ×
1.2mm leadless DFN package, which provides exceptional
thermal package characteristics.
• 2.5V to 5.5V input voltage range
• Two 150mA output current LDOs
• High output accuracy
− ±2% initial accuracy
• Low quiescent current (32µA per LDO)
• Stable with 1µF ceramic output capacitors
• Independent enable pins
• Low dropout voltage (155mV at 150mA)
• Thermal-shutdown protection
The MIC5392/3 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 low-drop-out voltage, high power
supply rejection and exceptional thermal package
characteristics makes it ideal for powering mobile phones
camera modules, image sensors, PDAs, MP3 players and
audio codec power applications.
• Current-limit protection
• Internal 25Ω output discharge circuit (MIC5393)
• 1.2mm × 1.2mm Extra Thin DFN package (H ≤ 0.4mm)
• 1.2mm × 1.2mm Thin DFN package
Applications
The MIC5392/3 is available in fixed-output voltages in the
tiny 6-pin 1.2mm × 1.2mm leadless DFN package which is
only 1.44mm2 in area. Additional voltage options are
available.
• Smart phones
• Tablet PCs
• GPS, PMP, PDAs, and handhelds
• Audio codec power
• Portable electronics
• 5V systems
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
Typical Application
Camera DSP Power Supply Circuit
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 18, 2014
Revision 1.3
Micrel, Inc.
MIC5392/3
Ordering Information
Junction
Temperature
Range
Manufacturing
Marking
Code
Part Number(1)
Voltage
Package(2)
Part Number
MIC5392-4CYMT
MIC5392-FMYMX
MIC5392-1.2/1.0YMT
RJ
1.2/1.0V
1.5/2.8V
6-Pin 1.2mm × 1.2mm Thin DFN
–40°C to +125°C
–40°C to +125°C
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
4)
MIC5392-1.5/2.8YMX(
RX
MIC5392-MFYMT
MIC5392-MGYMT
MIC5392-2.8/1.5YMT
MIC5392-2.8/1.8YMT
RP
RD
2.8/1.5V
2.8/1.8V
6-Pin 1.2mm × 1.2mm Thin DFN
6-Pin 1.2mm × 1.2mm Thin DFN
–40°C to +125°C
–40°C to +125°C
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
4)
MIC5392-3.0/1.8YMX(
1R
RM
2R
3.0/1.8V
3.0/2.8V
3.0/2.8V
MIC5392-PGYMX
MIC5392-PMYMT
MIC5392-PMYMX
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
MIC5392-3.0/2.8YMT
6-Pin 1.2mm × 1.2mm Thin DFN
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
4)
MIC5392-3.0/2.8YMX(
MIC5392-3.0/3.0YMX(
MIC5392-3.3/1.8YMX(
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
4)
4)
MIC5392-PPYMX
3R
3.0/3.0V
–40°C to +125°C
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
MIC5392-SGYMX
MIC5392-SSYMT
MIC5392-SSYMX
4R
RL
5R
3.3/1.8V
3.3/3.3V
3.3/3.3V
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
MIC5392-3.3/3.3YMT
6-Pin 1.2mm × 1.2mm Thin DFN
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
4)
MIC5392-3.3/3.3YMX(
MIC5393-1.5/2.8YMX(
MIC5393-2.8/2.8YMX(
MIC5393-3.0/1.8YMX(
MIC5393-3.0/2.8YMX(
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
3
3
3
3
)
MIC5393-FMYMX
MIC5393-MMYMX
MIC5393-PGYMX
U6
UV
U5
1.5/2.8V
2.8/2.8
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
)
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
)
3.0/1.8V
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
4)
)(
MIC5393-PMYMX
MIC5393-PPYMT
MIC5393-PPYMX
MIC5393-SGYMT
MIC5393-SGYMX
MIC5393-SSYMT
MIC5393-SSYMX
UU
UL
U3
UB
U2
UR
U4
3.0/2.8V
3.0/3.0V
3.0/3.0V
3.3/1.8V
3.3/1.8V
3.3/3.3V
3.3/3.3V
–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
3
)
MIC5393-3.0/3.0YMT(
MIC5393-3.0/3.0YMX(
6-Pin 1.2mm × 1.2mm Thin DFN
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
3
)
)
)
3
)
MIC5393-3.3/1.8YMT(
MIC5393-3.3/1.8YMX(
6-Pin 1.2mm × 1.2mm Thin DFN
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
3
3
)
MIC5393-3.3/3.3YMT(
MIC5393-3.3/3.3YMX(
6-Pin 1.2mm × 1.2mm Thin DFN
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
3
MIC5393-FMYMT
MIC5393-GMYMT
6-Pin 1.2mm × 1.2mm Thin DFN
6-Pin 1.2mm × 1.2mm Thin DFN
MIC5393-1.5/2.8YMT
MIC5393-1.8/2.8YMT
UP
UT
1.5/2.8V
1.8/2.8V
–40°C to +125°C
–40°C to +125°C
6-Pin 1.2mm × 1.2mm Extra Thin
DFN
MIC5393-GMYMX
MIC5393-1.8/2.8YMX
U7
1.8/2.8V
–40°C to +125°C
Notes:
1. Other voltages available. Contact Micrel for details.
2. Thin DFN and Extra Thin DFN are GREEN, RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
3. MIC5393 offers Auto-Discharge function.
4. Contact factory for availability.
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Revision 1.3
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MIC5392/3
Pin Configuration
6-Pin 1.2mm × 1.2mm Thin DFN (MT)
6-Pin 1.2mm × 1.2mm Extra Thin DFN (MX)
(Top View)
Pin Description
Pin Number
Pin Name Pin Function
1
2
3
VOUT1
VOUT2
GND
Output regulator 1. Connect a capacitor to ground.
Output regulator 2. Connect a capacitor to ground.
Ground.
Enable input for regulator 2. Logic High enables operation of regulator 2. Logic Low will shut down
regulator 2. Do not leave floating.
4
5
EN2
VIN
Input voltage supply. Connect a capacitor to ground.
Enable input for regulator 1. Logic High enables operation of regulator 1. Logic Low will shut down
regulator 1. Do not leave floating.
6
EN1
ePad
EP
Exposed heat sink pad. Connect to ground.
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MIC5392/3
Absolute Maximum Ratings(5)
Operating Ratings(6)
Supply Voltage (VIN)........................................ –0.3V to +6V
Enable Voltage (VEN1, VEN2). ............................–0.3V to VIN
Power Dissipation (PD)...........................Internally Limited(7)
Lead Temperature (soldering, 10sec.)....................... 260°C
Junction Temperature (TJ) ........................–40°C to +125°C
Storage Temperature (TS).........................–65°C to +150°C
ESD Rating(8)..................................................................2kV
Supply Voltage (VIN)..................................... +2.5V to +5.5V
Enable Voltage (VEN1, VEN2) ..............................–0.3V to VIN
Junction Temperature (TJ) ..........................–40°C to +85°C
Junction Thermal Resistance
1.2mm×1.2mm Thin DFN-6 (θJA).....................173°C/W
1.2mm×1.2mm Extra Thin DFN-6 (θJA) ...........173°C/W
Electrical Characteristics(9)
VIN = VEN1 = VEN2 = VOUT + 1V; higher of the two regulator outputs; IOUTLDO1 = IOUTLDO2 = 100µA; COUT1 = COUT2 = 1µF; TJ = 25°C, Bold
values indicate –40°C to +125°C, unless noted.
Parameter
Condition
Min.
–2.0
–3.0
Typ.
Max.
+2.0
+3.0
0.3
Units
Variation from nominal VOUT
Variation from nominal VOUT; –40°C to +125°C
VIN = VOUT +1V to 5.5V
Output Voltage Accuracy
%
Line Regulation
Load Regulation
0.02
0.3
%/V
%
IOUT = 100µA to 150mA
1
I
OUT = 50mA
IOUT = 150mA
EN1 = High; VEN2 = Low; IOUT = 0mA
50
110
310
Dropout Voltage
mV
155
V
32
32
57
45
45
85
Ground Pin Current
VEN1 = Low; VEN2 = High; IOUT = 0mA
VEN1 = VEN2 = High; IOUT1 = IOUT2 = 0mA
µA
µA
Ground Pin Current in
Shutdown
VEN1 = VEN2 = 0V
0.05
1
Ripple Rejection
Current Limit
f = 1kHz; COUT = 1µF
VOUT = 0V
60
dB
mA
200
325
100
550
Output Voltage Noise
COUT = 1µF, 10Hz to 100kHz
µVRMS
Auto-Discharge NFET
Resistance
MIC5393 Only; VEN1 = VEN2 = 0V; VIN = 3.6V
25
Ω
Enable Inputs (EN1/EN2)
Logic Low
Logic High
VIL ≤ 0.2V
VIH ≥ 1.2V
COUT = 1µF
0.2
Enable Input Voltage
V
1.2
0.01
0.01
50
1
1
Enable Input Current
µA
µs
Turn-On Time
125
Notes:
5. Exceeding the absolute maximum rating may damage the device.
6. The device is not guaranteed to function outside its operating rating.
7. 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.
8. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
9. Specification for packaged product only.
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MIC5392/3
Typical Characteristics
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MIC5392/3
Typical Characteristics (Continued)
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MIC5392/3
Functional Characteristics
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Revision 1.3
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Micrel, Inc.
MIC5392/3
Functional Diagram
Figure 1. Simplified MIC5392 Functional Block Diagram
Figure 2. Simplified MIC5393 Functional Block Diagram
December 18, 2014
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Micrel, Inc.
MIC5392/3
load on the regulator output to discharge the external
capacitor.
Application Information
MIC5392/3 is a dual 150mA LDO in a small 1.2mm ×
1.2mm package. The MIC5393 includes an auto-
discharge circuit for each of the LDO outputs that are
activated when the output is disabled. The MIC5392/3
regulator is fully protected from damage due to fault
conditions through linear current limiting and thermal
shutdown.
Forcing the enable pin high enables the output voltage.
The active-high enable pin uses CMOS technology and
the enable pin cannot be left floating; a floating enable
pin may cause an indeterminate state on the output.
Thermal Considerations
The MIC5392/3 is designed to provide 150mA of
continuous current for both outputs in a very small
package. Maximum ambient operating temperature can
be calculated based on the output current and the voltage
drop across the part. For example if the input voltage is
3.6V, the output voltage is 3.0V for VOUT1, 2.8V for
VOUT2 and the output current = 150mA. The actual
power dissipation of the regulator circuit can be
determined using Equation 1:
Input Capacitor
The MIC5392/3 is a high-performance, high-bandwidth
device. An input capacitor of 1µF capacitor is required
from the input to ground to provide stability. Low-ESR
ceramic capacitors provide optimal performance at a
minimum of space. Additional high-frequency capacitors,
such as small-valued NPO dielectric-type capacitors, help
filter out high-frequency noise and are good practice in
any RF-based circuit. X5R or X7R dielectrics are
recommended for the input capacitor. Y5V dielectrics
lose most of their capacitance over temperature and are
therefore, not recommended.
Eq. 1
PD = (VIN – VOUT1) IOUT1 + (VIN – VOUT2) IOUT2 + VIN IGND
Output Capacitor
Because this device is CMOS and the ground current is
typically <100µA over the load range, the power
dissipation contributed by the ground current is <1% and
can be ignored for the calculation in Equation 2:
The MIC5392/3 requires an output capacitor of 1µF or
greater to maintain stability. The design is optimized for
use with low-ESR ceramic chip capacitors. High-ESR
capacitors may cause high frequency oscillation. The
output capacitor can be increased, but performance has
been optimized for a 1µF ceramic output capacitor and
does not improve significantly with larger capacitance.
Eq. 2
PD = (3.6V – 3.0V) × 150mA + (3.6V - 2.8) × 150mA
PD = 0.21W
X7R/X5R dielectric-type ceramic capacitors are
recommended
because
of
their
temperature
performance. X7R-type capacitors change capacitance
by 15% over their operating temperature range and are
the most stable type of ceramic capacitors. Z5U and Y5V
dielectric capacitors change value by as much as 50%
and 60%, respectively, over their operating temperature
ranges. To use a ceramic chip capacitor with Y5V
dielectric, the value must be much higher than an X7R
ceramic capacitor to ensure the same minimum
capacitance over the equivalent operating temperature
range.
To determine the maximum ambient operating
temperature of the package, use the junction-to-ambient
thermal resistance of the device and the following basic
formula in Equation 3:
Eq. 3
T
− TA
J(MAX)
PD(MAX)
=
θJA
No-Load Stability
TJ(MAX) = 125°C, and the maximum junction temperature
of the die, θJA, thermal resistance = 173°C/W.
Unlike many other voltage regulators, the MIC5392/3 will
remain stable and in regulation with no load. This is
especially important in CMOS RAM to keep applications
alive.
Substituting PD for PD(max) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit. The junction-to-
ambient thermal resistance for the minimum footprint is
173°C/W.
Enable/Shutdown
The MIC5392/3 comes with two active-high enable pins
that allow each regulator to be disabled independently.
Forcing the enable pin low disables the regulator and
sends it into a “zero” off-mode-current state. In this state,
current consumed by the regulator goes nearly to zero.
When disabled the MIC5393 switches a 25Ω (typical)
The maximum power dissipation must not be exceeded
for proper operation.
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MIC5392/3
For example, when operating the MIC5392-PMYMT at an
input voltage of 3.6V and 150mA loads at each output
with a minimum footprint layout, the maximum ambient
operating temperature TA can be determined in Equation
4:
Eq. 4
0.21W = (125°C – TA)/(173°C/W)
TA = 89°C
Therefore, a 2.8V/1.8V application with 150mA at each
output current can accept an ambient operating
temperature of 58°C in a 1.2mm × 1.2mm DFN 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
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MIC5392/3
Typical Application Circuit
Bill of Materials
Item
Part Number
Manufacturer
Description
Qty.
C1, C2, C3
GRM188R61A105KE19D
Murata(10)
Capacitor, 1µF, 10V, X5R, 0603
3
MIC5392/3-xxYMT
MIC5392/3-xxYMX
U1
Micrel, Inc.(9)
High-Performance Dual 150mA LDO
1
Notes:
10. Murata: www.murata.com.
11. Micrel, Inc.: www.micrel.com.
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MIC5392/3
PCB Layout Recommendations
Top Layer
Bottom Layer
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MIC5392/3
Package Information and Recommended Landing Pattern(12)
6-Pin 1mm × 1mm Thin DFN (MT)
Note:
12. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com.
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Revision 1.3
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MIC5392/3
Package Information and Recommended Landing Pattern(12) (Continued)
6-Pin 1.2mm × 1.2mm Extra Thin DFN (MX)
December 18, 2014
Revision 1.3
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MIC5392/3
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
Micrel, Inc. is a leading global manufacturer of IC solutions for the worldwide high performance linear and power, LAN, and timing & communications
markets. The Company’s products include advanced mixed-signal, analog & power semiconductors; high-performance communication, clock
management, MEMs-based clock oscillators & crystal-less clock generators, Ethernet switches, and physical layer transceiver ICs. Company
customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and computer products.
Corporation headquarters and state-of-the-art wafer fabrication facilities are located in San Jose, CA, with regional sales and support offices and
advanced technology design centers situated throughout the Americas, Europe, and Asia. Additionally, the Company maintains an extensive network
of distributors and reps worldwide.
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this datasheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability
whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical
implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 2012 Micrel, Incorporated.
December 18, 2014
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