MIC5301-1.5YD5TX [MICROCHIP]
IC,VOLT REGULATOR,FIXED,+1.5V,CMOS,TSOP,5PIN,PLASTIC;
| 型号： | MIC5301-1.5YD5TX |
| 厂家： | 
MICROCHIP |
| 描述： | IC,VOLT REGULATOR,FIXED,+1.5V,CMOS,TSOP,5PIN,PLASTIC 光电二极管 |
| 文件： | 总11页 (文件大小：414K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC5301
Single, 150mA µCap ULDO™
General Description
Features
The MIC5301 is a high performance, single output
ultra low LDO (ULDO™) regulator, offering low total
output noise. The MIC5301 is capable of sourcing
150mA output current and offers high PSRR and low
output noise, making it an ideal solution for RF
applications.
• Ultra low dropout voltage – 40mV @ 150mA
• Input voltage range: 2.3V to 5.5V
• 150mA guaranteed output current
• Stable with ceramic output capacitors
• Ultra low output noise – 30µVrms
• Low quiescent current – 85µA total
• High PSRR – up to 75dB@1kHz
• 35µs turn-on time
For battery operated applications, the MIC5301 offers
2% accuracy, extremely low dropout voltage (40mV @
150mA), and low ground current (typically 85µA total).
The MIC5301 can also be put into a zero-off-mode
current state, drawing no current when disabled.
• High output accuracy
• ± 2% initial accuracy
• ± 3% over temperature
The MIC5301 is available in the 1.6mm x 1.6mm Thin
MLF® package, occupying only 2.56mm2 of PCB area,
a 36% reduction in board area compared to SC-70
and 2mm x 2mm MLF® packages.
• Thermal shutdown and current limit protection
• Tiny 6-pin 1.6mm x 1.6mm Thin MLF® leadless
The MIC5301 has an operating junction temperature
range of –40°C to +125°C and is available in fixed and
adjustable output voltages in lead-free (RoHS
compliant) Thin MLF® and Thin SOT-23-5 packages.
package
• Thin SOT-23-5 package
•
Data sheets and support documentation can be found
on Micrel’s web site at www.micrel.com.
Applications
• Mobile phones
• PDAs
• GPS receivers
• Portable electronics
• Digital still and video cameras
•
Typical Application
MIC5301-x.xYMT
VIN
VIN
VOUT
EN
BYP
GND
1µF
1µF
0.01µF
Portable Application
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
M9999-042108
April 2008
Micrel, Inc.
MIC5301
Ordering Information
Part number
Marking
Code(1)
Output
Temperature Range
Package
Voltage(2)
MIC5301-2.85YML(4)
MIC5301YML(4)
MIC5301-1.3YMT(3,4)
MIC5301-1.5YMT(3,4)
MIC5301-1.8YMT(3,4)
2JC
CAA
13C
15C
18C
2.85V
ADJ.
1.3V
1.5V
1.8V
–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
6-Pin 1.6mm x 1.6mm MLF®
6-Pin 1.6mm x 1.6mm MLF®
6-Pin 1.6mm x 1.6mm Thin MLF®
6-Pin 1.6mm x 1.6mm Thin MLF®
6-Pin 1.6mm x 1.6mm Thin MLF®
MIC5301-2.1YMT(3,4)
MIC5301-2.5YMT(3,4)
MIC5301-2.6YMT(3,4)
MIC5301-2.8YMT(3,4)
MIC5301-2.85YMT(3,4)
MIC5301-2.9YMT(3,4)
MIC5301-3.0YMT(3,4)
MIC5301-3.3YMT(3,4)
MIC5301-4.6YMT(3,4)
MIC5301YMT(3,4)
MIC5301-1.3YD5
MIC5301-1.5YD5
MIC5301-1.8YD5
MIC5301-2.1YD5
MIC5301-2.5YD5
MIC5301-2.6YD5
MIC5301-2.8YD5
MIC5301-2.85YD5
MIC5301-2.9YD5
MIC5301-3.0YD5
MIC5301-3.3YD5
MIC5301-4.6YD5
MIC5301YD5
21C
25C
2.1V
2.5V
2.6V
2.8V
2.85V
2.9V
3.0V
3.3V
4.6V
ADJ.
1.3V
1.5V
1.8V
2.1V
2.5V
2.6V
2.8V
2.85V
2.9V
3.0V
3.3V
4.6V
ADJ.
–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
–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
–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
–40°C to +125°C
–40°C to +125°C
6-Pin 1.6mm x 1.6mm Thin MLF®
6-Pin 1.6mm x 1.6mm Thin MLF®
6-Pin 1.6mm x 1.6mm Thin MLF®
6-Pin 1.6mm x 1.6mm Thin MLF®
6-Pin 1.6mm x 1.6mm Thin MLF®
6-Pin 1.6mm x 1.6mm Thin MLF®
6-Pin 1.6mm x 1.6mm Thin MLF®
6-Pin 1.6mm x 1.6mm Thin MLF®
6-Pin 1.6mm x 1.6mm Thin MLF®
6-Pin 1.6mm x 1.6mm Thin MLF®
5-Pin TSOT-23
26C
28C
2JC
29C
30C
33C
46C
CAA
QC13
QC15
QC18
QC21
QC25
QC26
QC28
QC2J
QC29
QC30
QC33
QC46
QCAA
5-Pin TSOT-23
5-Pin TSOT-23
5-Pin TSOT-23
5-Pin TSOT-23
5-Pin TSOT-23
5-Pin TSOT-23
5-Pin TSOT-23
5-Pin TSOT-23
5-Pin TSOT-23
5-Pin TSOT-23
5-Pin TSOT-23
5-Pin TSOT-23
Notes:
1. Under bar / Over bar symbol may not be to scale.
2. Other Voltages available. Contact Micrel for details.
3. Thin MLF® Pin 1 indicator = ▲.
4. MLF® Thin MLF® are GREEN RoHS compliant packages. Lead Finish is NiPdAu. Mold compound is Halogen Free.
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April 2008
Micrel, Inc.
MIC5301
Pin Configuration
EN
GND
VIN
1
2
3
6
5
4
BYP
NC
EN
GND
VIN
1
2
3
6
5
4
BYP
ADJ
OUT
OUT
6-Pin 1.6mm x 1.6mm Thin MLF® (MT)
Fixed (Top View)
6-Pin 1.6mm x 1.6mm Thin MLF® (MT)
Adjustable (Top View)
GND
2
GND
2
EN
3
VIN
1
EN
3
VIN
1
4
5
4
5
BYP
OUT
ADJ
OUT
TSOT-23-5 (D5)
TSOT-23-5 (D5)
Fixed (Top View)
Adjustable (Top View)
Pin Description
Pin No.
Pin No.
Pin No.
Pin No.
Pin Name
Pin Function
Thin MLF-6 Thin MLF-6
TSOT-23-5 TSOT-23-5
Fixed
Adj.
Fixed
Adj.
1
1
3
3
EN
Enable Input. Active High. High = on, low = off.
Do not leave floating.
2
3
4
5
–
2
3
4
–
5
2
1
5
–
–
2
1
5
–
4
GND
VIN
Ground
Supply Input.
Output Voltage.
No connection.
OUT
NC
ADJ
Adjust Input. Connect to external resistor voltage
divider network.
6
6
4
–
–
–
BYP
Reference Bypass: Connect external 0.01µF to GND
for reduced Output Noise. May be left open.
HS Pad
HS Pad
E PAD
Exposed Heatsink Pad connected to ground
internally.
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April 2008
Micrel, Inc.
MIC5301
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (VIN).....................................0V to +6V
Enable Input Voltage (VEN)...........................0V to +6V
Power Dissipation, Internally Limited(3)
Lead Temperature (soldering, 3sec)..................260°C
Storage Temperature (TS)................ –65°C to +150°C
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
Thin MLF-6 (θJA)......................................100°C/W
TSOT-23-5 (θJA) ......................................235°C/W
Electrical Characteristics(4)
VIN = VOUT + 1.0V; COUT = 1.0µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C to +125°C, unless noted.
Parameter
Conditions
Min
-2.0
-3.0
Typ
Max
+2.0
+3.0
Units
%
Output Voltage Accuracy
Variation from nominal VOUT
Variation from nominal VOUT; –40°C to +125°C
VIN = VOUT + 1V to 5.5V; IOUT = 100µA
%
Line Regulation
0.02
0.3
0.6
%/V
%/V
Load Regulation
Dropout Voltage (5)
IOUT = 100µA to 150mA
IOUT = 100µA
0.15
0.1
25
2.0
%
mV
mV
mV
µA
µA
I
I
OUT = 100mA
OUT = 150mA
75
100
120
2
40
Ground Pin Current
IOUT = 0 to 150mA
85
Ground Pin Current in
Shutdown
VEN ≤ 0.2V
0.01
Ripple Rejection
f = 1kHz; COUT = 1.0µF; CBYP = 0.1µF
f = 20kHz; COUT = 1.0µF; CBYP = 0.1µF
VOUT = 0V
75
50
dB
dB
Current Limit
275
450
30
850
0.2
mA
Output Voltage Noise
Enable Input
COUT = 1.0µF; CBYP = 0.1µF; 10Hz to 100kHz
µVRMS
Enable Input Voltage
Logic Low
Logic High
VIL ≤ 0.2V
VIH ≥ 1.0V
V
V
1
Enable Input Current
0.01
0.01
1
1
µA
µA
Turn-on Time
Turn-on Time
Notes:
COUT = 1.0µF; CBYP = 0.1µF
35
100
µs
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 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. Specification for packaged product only.
5. 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.
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Micrel, Inc.
MIC5301
Functional Diagram
VIN
EN
VOUT
Quick-
Start
VREF
Error
Amp
BYP
Thermal
Shutdown
Current
Limit
GND
MIC5301 Block Diagram – Fixed
VIN
EN
VOUT
Quick-
Start
VREF
Error
Amp
BYP
ADJ
Thermal
Shutdown
Current
Limit
GND
MIC5301 Block Diagram – Adjustable
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April 2008
Micrel, Inc.
MIC5301
Typical Characteristics
Power Supply
Rejection Ratio
Dropout Voltage
vs. Temperature
Dropout Voltage
vs. Output Current
-90
60
55
50
45
40
35
30
25
20
15
10
5
50
45
40
35
30
25
20
15
10
5
V
V
= V
+ 1V
50mA
-80
IN
OUT
150mA
= 2.8V
= 1µF
OUT
OUT
C
-70
-60
100µA
-50
100mA
-40
-30
-20
150mA
50mA
25mA
V
= 3.85V
IN
V
= 2.85V
V
V
= V
+ 1V
-10 OUT
IN
OUT
C
C
= 1µF
= 0.1µF
= 2.85V
= 1µF
OUT
OUT
OUT
0
BYP
C
10
0
0
0.1
1
10
100
1,000
0
25 50 75 100 125 150
OUTPUT CURRENT (mA)
FREQUENCY (kHz)
TEMPERATURE (°C)
Output Voltage
vs. Output Current
Output Voltage
vs. Temperature
Output Voltage
vs. Supply Voltage
2.88
2.87
2.86
2.85
2.84
2.83
2.82
3.0
2.5
2.0
1.5
1.0
0.5
0
3.45
3.25
3.05
2.85
2.65
2.45
2.25
V
= 2.85V
OUT
100µA
150mA
V
V
= V
+ 1V
IN
OUT
= 2.85V
= 1µF
V
V
= V
+ 1V
OUT
OUT
IN
OUT
C
I
= 2.85V
= 1µF
OUT
OUT
= 100µA
C
OUT
0
25 50 75 100 125 150
OUTPUT CURRENT (mA)
0
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
Ground Current
vs. Output Current
Ground Current
vs. Temperature
Ground Current
vs. Supply Voltage
100
90
80
70
60
50
40
30
20
10
0
90
88
86
84
82
80
78
76
74
72
70
100
90
80
70
60
50
40
30
20
10
0
150mA
100µA
150mA
100µA
V
V
= V
+ 1V
V
V
= V
+ 1V
IN
OUT
OUT
IN
OUT
= 2.85V
= 1µF
= 2.85V
= 1µF
OUT
OUT
C
C
OUT
0
25 50 75 100 125 150
OUTPUT CURRENT (mA)
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
Current Limit
Output Noise
vs. Input Voltage
Spectral Density
510
500
490
480
470
460
450
440
430
420
410
10
1
0.1
V
= 4V
IN
V
0.01
= 2.85V
= 1µF
= 0.1µF
OUT
OUT
BYP
V
= V
IN
OUT
C
C
EN
C
= 1µF
0.001
3.0
3.5
4.0
4.5
5.0
5.5
0.01 0.1
1
10 100 1,000 10,000
INPUT VOLTAGE (V)
FREQUENCY (kHz)
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M9999-042108
April 2008
Micrel, Inc.
MIC5301
Functional Characteristics
Enable Turn-On
Load Transient
150mA
V
V
= V
+ 1V
OUT
IN
= 2.85V
= 1µF
OUT
C
OUT
V
V
= V
+ 1V
OUT
IN
= 2.85V
= 1µF
OUT
10mA
C
C
OUT
= 0.1µF
BYP
Time (10µs/div)
Time (40µs/div)
Line Transient
5V
4V
V
V
= V
+ 1V
OUT
IN
= 2.85V
= 1µF
OUT
C
OUT
BYP
C
= 0.1µF
I
= 10mA
OUT
Time (40µs/div)
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Micrel, Inc.
MIC5301
Applications Information
Enable/Shutdown
PSRR. Turn-on time increases slightly with respect to
bypass capacitance. A unique, quick-start circuit
allows the MIC5301 to drive a large capacitor on the
bypass pin without significantly slowing turn-on time.
Refer to the Typical Characteristics section for
performance with different bypass capacitors.
The MIC5301 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.
No-Load Stability
Unlike many other voltage regulators, the MIC5301
will remain stable and in regulation with no load. This
is especially important in CMOS RAM keep-alive
applications.
Input Capacitor
Adjustable Regulator Application
The MIC5301 is a high-performance, high bandwidth
device. Therefore, it requires a well-bypassed input
supply for optimal performance. A 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.
Adjustable regulators use the ratio of two resistors to
multiply the reference voltage to produce the desired
output voltage. The MIC5301 can be adjusted from
1.25V to 5.5V by using two external resistors (Figure
1). The resistors set the output voltage based on the
following equation:
R1
R2
⎛
⎞
⎟
VOUT = VREF 1+
⎜
⎝
⎠
VREF = 1.25V
Output Capacitor
MIC5301YMT
The MIC5301 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.
VIN
VOUT
VIN VOUT
R1
R2
1µF
1µF
EN
ADJ
GND
X7R/X5R dielectric-type ceramic capacitors are
recommended because of their temperature
Figure 1. Adjustable Voltage Output
Thermal Considerations
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.
The MIC5301 is designed to provide 150mA of
continuous current. Maximum ambient operating
temperature can be calculated based on the output
current and the voltage drop across the part. Given
that the input voltage is 5.0V, the output voltage is
2.8V and the output current = 150mA.
The actual power dissipation of the regulator circuit
can be determined using the equation:
PD = (VIN – VOUT) IOUT + VIN IGND
Bypass 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 this calculation.
A capacitor can be placed from the noise bypass pin
to ground to reduce output voltage noise. The
capacitor bypasses the internal reference. A 0.1µF
capacitor is recommended for applications that require
low-noise outputs. The bypass capacitor can be
increased, further reducing noise and improving
PD = (5V – 2.8V) × 150mA
PD = 0.33W
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Micrel, Inc.
MIC5301
To determine the maximum ambient operating
temperature of the package, use the junction-to-
ambient thermal resistance of the device and the
following basic equation:
The maximum power dissipation must not be
exceeded for proper operation.
For example, when operating the MIC5301-2.8YML at
an input voltage of 5V and 150mA load with a
minimum footprint layout, the maximum ambient
operating temperature TA can be determined as
follows:
TJ(MAX) - TA
⎛
PD(MAX)
=
⎝
JA
0.33W = (125°C – TA)/(100°C/W)
TA=92°C
TJ(max) = 125°C, the maximum junction temperature of
the die θJA thermal resistance = 100°C/W.
The table below shows junction-to-ambient thermal
resistance for the MIC5301 in the 6-pin 1.6mm x
1.6mm MLF® package.
Therefore, a 2.8V application with 150mA of output
current can accept an ambient operating temperature
of 92°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:
θJA Recommended
Package
Minimum Footprint
6-Pin 1.6x1.6 MLF®
100°C/W
100°C/W
6-Pin 1.6x1.6
Thin MLF®
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
Thermal Resistance
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 100°C/W.
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April 2008
Micrel, Inc.
MIC5301
Package Information
6-Pin 1.6mm x 1.6mm MLF® (ML)
6-Pin 1.6mm x 1.6mm Thin MLF® (MT)
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M9999-042108
April 2008
Micrel, Inc.
MIC5301
5-Pin TSOT-23 (D5)
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
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for
its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
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.
© 2006 Micrel, Inc.
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