Micrel MIC5317-1.0YD5 High-performance single 150ma ldo Datasheet

MIC5317
High-Performance Single 150mA LDO
General Description
The MIC5317 is a high performance 150mA low dropout
regulator offering high power supply rejection (PSRR) in
an ultra-small 1mm × 1mm package for stringent space
requirements and demanding performance. The MIC5317
operates from an input voltage from 2.5V to 6.0V and is
capable of providing the output voltages of 1.0V to 3.6V
making it ideal for USB port or 6V AC adaptor applications.
The MIC5317 offers 2% initial accuracy, low dropout
voltage (155mV @ 150mA), and low ground current
(typically 29µA). The MIC5317 can also be put into a zerooff-mode current state, drawing virtually no current when
disabled.
The MIC5317 is available in several advanced packages
including a lead-free (RoHS-compliant) 1mm × 1mm Thin
2
DFN occupying only 1mm of PCB area, a 75% reduction
in board area compared to SC-70 and 2mm × 2mm DFN
packages. It is also available in a SOT23-5 and TSOT23-5
package.
The MIC5317 has an operating junction temperature range
of –40°C to 125°C.
Features
• Tiny 1mm × 1mm Thin DFN, SOT23-5 and
TSOT23-5 packages
•
•
•
•
•
•
•
•
Wide 2.5V to 6V operating range
150mA guaranteed output current
Stable with 1µF ceramic output capacitors
Low dropout voltage: 155mV @ 150mA
Excellent load/line transient response
Low quiescent current: 29µA
High PSRR: 70dB
Thermal-shutdown and current-limit protection
Applications
•
•
•
•
•
•
USB dongles
Wireless LANs
PC Desktops, laptops, and tablets
Battery-powered equipment
Digital still and video cameras
5V general purpose
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
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
August 23, 2013
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Micrel, Inc.
MIC5317
Ordering Information
Marking
Code
Output
(1)
Voltage
Temperature Range
MIC5317-1.0YMT
71
1.0V
–40°C to +125°C
4-Pin 1mm × 1mm Thin DFN
Pb-Free
MIC5317-1.2YMT
72
1.2V
–40°C to +125°C
4-Pin 1mm × 1mm Thin DFN
Pb-Free
MIC5317-1.5YMT
73
1.5V
–40°C to +125°C
4-Pin 1mm × 1mm Thin DFN
Pb-Free
MIC5317-1.8YMT
74
1.8V
–40°C to +125°C
4-Pin 1mm × 1mm Thin DFN
Pb-Free
MIC5317-2.5YMT
76
2.5V
–40°C to +125°C
4-Pin 1mm × 1mm Thin DFN
Pb-Free
MIC5317-2.8YMT
77
2.8V
–40°C to +125°C
4-Pin 1mm × 1mm Thin DFN
Pb-Free
MIC5317-3.0YMT
78
3.0V
–40°C to +125°C
4-Pin 1mm × 1mm Thin DFN
Pb-Free
MIC5317-3.3YMT
79
3.3V
–40°C to +125°C
4-Pin 1mm × 1mm Thin DFN
Pb-Free
MIC5317-1.0YM5
1C7
1.0V
–40°C to +125°C
5-Pin SOT23
Pb-Free
MIC5317-1.2YM5
147
1.2V
–40°C to +125°C
5-Pin SOT23
Pb-Free
MIC5317-1.5YM5
1F7
1.5V
–40°C to +125°C
5-Pin SOT23
Pb-Free
MIC5317-1.8YM5
1G7
1.8V
–40°C to +125°C
5-Pin SOT23
Pb-Free
MIC5317-2.5YM5
1J7
2.5V
–40°C to +125°C
5-Pin SOT23
Pb-Free
MIC5317-2.8YM5
1M7
2.8V
–40°C to +125°C
5-Pin SOT23
Pb-Free
MIC5317-3.0YM5
1P7
3.0V
–40°C to +125°C
5-Pin SOT23
Pb-Free
MIC5317-3.3YM5
1S7
3.3V
–40°C to +125°C
5-Pin SOT23
Pb-Free
MIC5317-1.0YD5
1C7
1.0V
–40°C to +125°C
5-Pin Thin SOT23
Pb-Free
MIC5317-1.2YD5
147
1.2V
–40°C to +125°C
5-Pin Thin SOT23
Pb-Free
MIC5317-1.5YD5
1F7
1.5V
–40°C to +125°C
5-Pin Thin SOT23
Pb-Free
MIC53171.8YD5
1G7
1.8V
–40°C to +125°C
5-Pin Thin SOT23
Pb-Free
MIC5317-2.5YD5
1J7
2.5V
–40°C to +125°C
5-Pin Thin SOT23
Pb-Free
MIC5317-2.8YD5
1M7
2.8V
–40°C to +125°C
5-Pin Thin SOT23
Pb-Free
MIC5317-3.0YD5
1P7
3.0V
–40°C to +125°C
5-Pin Thin SOT23
Pb-Free
MIC5317-3.3YD5
1S7
3.3V
–40°C to +125°C
5-Pin Thin SOT23
Pb-Free
Part Number
Packages
(2)
(3)
Lead Finish
Note:
1. Other voltages are available. Contact Micrel for details.
2. Thin DFN ▲ = Pin 1 identifier.
3. Thin DFN is a GREEN, RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
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MIC5317
Pin Configuration
4-Pin 1mm × 1mm Thin DFN (MT)
5-Pin SOT23 (D5) / TSOT23 (M5)
(Top View)
(Top View)
Pin Description
Pin
Number
Pin Name
TDFN-4
Pin Name
SOT23-5
Pin Name
TSOT23-5
1
VOUT
–
–
1
–
VIN
VIN
Supply Input.
2
GND
GND
GND
Ground.
3
EN
EN
EN
4
VIN
–
–
4
–
NC
NC
5
–
VOUT
VOUT
EP
ePad
NA
NA
August 23, 2013
Pin Function
Output Voltage.
Enable Input: Active High. High = ON; Low = OFF. Do not leave
floating.
Supply Input.
No connect. Not internally connected.
Output Voltage.
Exposed Heatsink Pad, connect to Ground.
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MIC5317
Absolute Maximum Ratings(4)
Operating Ratings(5)
Supply Voltage (VIN) ............................................... 0V to 7V
Enable Voltage (VEN). ............................................. 0V to VIN
(6)
Power Dissipation (PD) ........................... Internally Limited
Lead Temperature (soldering, 10sec) ........................ 260°C
Junction Temperature (TJ) ........................ –40°C to +150°C
Storage Temperature (Ts) ......................... –65°C to +150°C
(7)
ESD Rating .................................................................. 2kV
Supply Voltage (VIN) ............................................ 2.5V to 6V
Enable Voltage (VEN) .............................................. 0V to VIN
Junction Temperature (TJ) ........................ –40°C to +125°C
Junction Thermal Resistance
1mm × 1mm Thin DFN-4 (θJA) ......................... 240°C/W
SOT23-5 (θJA) .................................................. 253°C/W
TSOT23-5 (θJA) ................................................ 253°C/W
Electrical Characteristics(8)
VIN = VEN = VOUT + 1V; CIN = COUT = 1µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C to +125°C, unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
Min
Variation from nominal VOUT
–2.0
+2.0
Variation from nominal VOUT; –40°C to +125°C
–3.0
+3.0
VIN = VOUT +1V to 6V; IOUT = 100µA
Load Regulation
Dropout Voltage
Condition
(9)
(10)
Ground Pin Current
(11)
Typ
0.02
Max
Units
%
0.3
%
IOUT = 100µA to 150mA
10
25
mV
IOUT = 50mA; VOUT ≥ 2.8V
IOUT = 150mA; VOUT ≥ 2.8V
IOUT = 50mA; VOUT < 2.8V
IOUT = 150mA; VOUT < 2.8V
55
155
60
180
110
310
135
380
mV
IOUT = 0mA
29
39
µA
0.05
1
µA
Ground Pin Current in
Shutdown
VEN = 0V
Ripple Rejection
f = up to 1kHz; COUT = 1µF
f = 1kHz – 10kHz; COUT = 1µF
Current Limit
VOUT = 0V
Output Voltage Noise
COUT = 1µF, 10Hz to 100kHz
80
65
200
325
dB
550
200
mA
µVRMS
Enable Input
Enable Input Voltage
Enable Input Current
Turn-on Time
0.2
Logic Low
1.2
Logic High
VIL ≤ 0.2V
0.01
1
VIH ≥ 1.2V
0.01
1
50
125
COUT = 1µF; IOUT = 150mA
V
µA
µs
Notes:
4. Exceeding the absolute maximum ratings may damage the device.
5. The device is not guaranteed to function outside its operating ratings.
6. 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.
7. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF.
8. Specification for packaged product only.
9. Regulation is measured at constant junction temperature using low duty cycle pulse testing, changes in output voltage due to heating effects are
covered by the thermal regulation specification
10. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V
differential. For outputs below 2.5V, dropout voltage is the input-to-output differential with the minimum input voltage 2.5V.
11. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin
current.
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Micrel, Inc.
MIC5317
Typical Characteristics
August 23, 2013
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Micrel, Inc.
MIC5317
Typical Characteristics (Continued)
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Micrel, Inc.
MIC5317
Functional Characteristics
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MIC5317
Functional Block Diagram
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MIC5317
Application Information
Enable/Shutdown
The MIC5317 comes with an active-high enable pin that
allows the regulator to be disabled. 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. 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.
MIC5317 is a low-noise 150mA LDO. The MIC5317
regulator is fully protected from damage due to fault
conditions, offering linear current limiting and thermal
shutdown.
Input Capacitor
The MIC5317 is a high-performance, high-bandwidth
device. An input capacitor of 1µF 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.
Thermal Considerations
The MIC5317 is designed to provide 150mA of
continuous current 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 2.8V, and the output current = 150mA. The
actual power dissipation of the regulator circuit can be
determined using Equation 1:
Output Capacitor
The MIC5317 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 are not recommended because they 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.
PD = (VIN – VOUT1) I OUT + VIN IGND
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 Equation 2:
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.
PD = (3.6V – 2.8V) × 150mA
PD = 0.120W
Eq. 2
To determine the maximum ambient operating
temperature of the package, use the junction-to-ambient
thermal resistance of the device and Equation 3:
 TJ(max) − TA
PD(MAX) = 
θ JA

No-Load Stability
Unlike many other voltage regulators, the MIC5317 will
remain stable and in regulation with no load. This is
especially important in CMOS RAM keep-alive
applications.
August 23, 2013
Eq. 1




Eq. 3
TJ(max) = 125°C, the maximum junction temperature of the
die, θJA thermal resistance = 240°C/W for the YMT
package, and 253°C/W for the SOT23-5 and TSOT23-5
packages.
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MIC5317
Substituting PD for PD(max) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit. The junction-toambient thermal resistance for the minimum footprint is
240°C/W.
The maximum power dissipation must not be exceeded
for proper operation.
For example, when operating the MIC5317-2.8YMT at an
input voltage of 3.6V and 150mA load with a minimum
footprint layout, the maximum ambient operating
temperature TA can be determined as shown in Equation
4:
0.120W = (125°C – TA)/(240°C/W)
TA = 96°C
Eq. 4
Therefore the maximum ambient operating temperature
of 96°C is allowed in a 1mm × 1mm 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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MIC5317
MIC5317-xxYMT Typical Application Schematic
Bill of Materials
Item
C1, C2
U1
Part Number
GRM155R61A105KE15D
MIC5317-xxYMT
Manufacturer
Murata
(12)
(13)
Micrel, Inc.
Description
Qty.
Capacitor, 1µF Ceramic, 10V, X5R, Size 0402
2
High-Performance Single 150mA LDO
1
Notes:
12. Murata: www.murata.com.
13. Micrel, Inc.: www.micrel.com.
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MIC5317
MIC5317-xxYM5/YD5 Typical Application Schematic
Bill of Materials
Item
C1, C2
U1
Part Number
C1005X5R1A105K
MIC5317-xxYM5/YD5
Manufacturer
(14)
TDK
Micrel, Inc
.(15)
Description
Qty.
Capacitor, 1µF Ceramic, 10V, X5R, Size 0402
2
High-Performance Single 150mA LDO
1
Notes:
14. TDK: www.tdk.com.
15. Micrel, Inc.: www.micrel.com.
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MIC5317
PCB Layout Recommendations (1mm × 1mm Thin DFN)
Top Layer
Bottom Layer
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MIC5317
Package Information(16) and Recommended Landing Pattern
4-Pin 1mm × 1mm Thin DFN (MT)
Note:
16. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com.
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MIC5317
Package Information(16) and Recommended Landing Pattern (Continued)
5-Pin SOT23 (M5)
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MIC5317
Package Information(16) and Recommended Landing Pattern (Continued)
5-Pin TSOT23 (D5)
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MIC5317
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 makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. 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
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© 2013 Micrel, Incorporated.
August 23, 2013
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