MIC5265
150mA µCap LDO Regulator
General Description
The MIC5265 is a 150mA LDO in lead-free Thin SOT-23-5
packaging ideal for applications where cost is the priority.
The MIC5265 is ideal for any application in portable
electronics, including both RF and Digital applications.
With low output noise and high PSRR, the MIC5265 is
ideal for noise sensitive applications such as RF. While the
fast transient response and active shutdown circuitry
makes it well-suited for powering digital circuitry.
The MIC5265 has a 2.7V to 5.5V input operating voltage
range, making it ideal for operation from a single cell
lithium ion battery or fixed 3.3V and 5V systems. The
MIC5265 come with an enable pin and can be put into a
zero off-mode current state.
The MIC5265 offers low dropout voltage (210mV at
150mA), low output noise (57µVrms), high PSRR and
integrates an active shutdown circuit on the output of each
regulator to discharge the output voltage when disabled.
Data sheets and supporting documentation can be found
on Micrel’s web site at: www.micrel.com
Features
•
•
•
•
•
•
•
•
•
2.7V to 5.5V supply voltage.
Low 75µA quiescent current per LDO.
Thin SOT-23-5 package.
Low Noise – 57µVrms.
High PSRR – 60dB at 1kHz.
Low dropout voltage – 210mV at 150mA.
Stable with ceramic output capacitors.
Fast transient response.
Active shutdown.
Applications
•
Cellular Telephones
•
PDAs
•
GPS Receivers
____________________________________________________________________________________________________________
Typical Application
Power Supply
Rejection Ratio
50mA
MIC5265-xxYD5
VIN
EN
1µF
BYP
0.01µF
GND
1µF
RF Receiver
VOUT
Rx/Synth
-70
-60
-50
-40
-30
-20
100mA
150mA
0
0.01 0.1
1
10
100
FREQUENCY (kHz)
V
IN
= V
OUT
+ 1V
V
OUT
= 3.1V
BYP = 0.01µF
C
OUT
= 1µF
1000
RF Power Supply
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
February 2007
M9999-022307
Micrel, Inc.
MIC5265
Ordering Information
Part Number
Output
Voltage
Marking
Code
Junction Temp. Range
Package
MIC5265-1.5YD5
MIC5265-1.8YD5
MIC5265-1.85YD5
MIC5265-2.5YD5
MIC5265-2.6YD5
MIC5265-2.7YD5
MIC5265-2.8YD5
MIC5265-2.85YD5
MIC5265-2.9YD5
MIC5265-3.0YD5
MIC5265-3.1YD5
MIC5265-3.2YD5
MIC5265-3.3YD5
1.5V
1.8V
1.85V
2.5V
2.6V
2.7V
2.8V
2.85V
2.9V
3.0V
3.1V
3.2V
3.3V
N715
N718
N71J
N725
N726
N727
N728
N72J
N729
N730
N731
N732
N733
–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
Pb-Free Thin SOT-23-5
Pb-Free Thin SOT-23-5
Pb-Free Thin SOT-23-5
Pb-Free Thin SOT-23-5
Pb-Free Thin SOT-23-5
Pb-Free Thin SOT-23-5
Pb-Free Thin SOT-23-5
Pb-Free Thin SOT-23-5
Pb-Free Thin SOT-23-5
Pb-Free Thin SOT-23-5
Pb-Free Thin SOT-23-5
Pb-Free Thin SOT-23-5
Pb-Free Thin SOT-23-5
Note:
1. Other Voltage Combinations available. Contact Micrel, Inc. for details.
February 2007
2
M9999-022307
Micrel, Inc.
MIC5265
Pin Configuration
EN GND VIN
1
3
2
4
BYP
5
OUT
Lead-Free Thin SOT-23-5 (M5)
Pin Description
Pin Number
1
2
3
4
5
Pin Name
IN
GND
EN
BYP
OUT
Pin Function
Supply Voltage
Ground
Enable/Shutdown (Input): CMOS compatible input. Logic high = enable;
logic low = shutdown. Do not leave open.
Reference Bypass: Connect external 0.01µF
<=
C
BYP
<=
1.0µF capacitor to
GND to reduce output noise. May be left open.
Regulator Output
February 2007
3
M9999-022307
Micrel, Inc.
MIC5265
Absolute Maximum Ratings
(1)
Supply Input Voltage (V
IN
).................................... 0V to +7V
Enable Input Voltage (V
EN1
) ................................. 0V to +7V
Power Dissipation (P
D
) .......................... Internally Limited
(3)
Junction Temperature (T
J
) ...........................-40°C to 125°C
Lead Temperature (soldering, #sec.)......................... 260°C
Storage Temperature (T
s
) ............................-55°C to 150°C
EDS Rating
(4)
................................................................. 2kV
Operating Ratings
(2)
Supply Input Voltage (V
IN
)............................ +2.7V to +5.5V
Enable Input Voltage (V
EN
)................................... 0V to +V
IN
Junction Temperature (T
A
) ........................ –40°C to +125°C
Junction Thermal Resistance
Thin SOT-23-5 (θ
JA
).........................................235°C/W
Electrical Characteristics
(5)
V
EN
= V
IN
= V
OUT
+ 1V; I
L
=100µA; C
L
= 1.0µF; C
BYP
= 0.01µF per output; T
A
= 25°C,
bold
values indicate –40°C< T
A
<
+85°C; unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Dropout Voltage
Quiescent Current
Ground Pin Current
PSRR (Ripple Rejection)
Current Limit
Output Noise
Enable Input (EN1 and EN2)
Enable Input Logic Low
Enable Input Logic High
Enable Input Current
Thermal Shutdown
Thermal Shutdown Temperature
Hysteresis
Turn-on/Turn-off Characteristics
Turn-on Time
Discharge Resistance
Condition
I
OUT
= 100
µ
A
V
IN
= V
OUT
+1V to 5.5V
I
OUT
= 0.1mA to 150mA
I
OUT
= 50mA
I
OUT
= 150mA
V
EN
< 0.2V
I
OUT
= 0mA
I
OUT
= 150mA
f = 100Hz, C
BYP
= 0.1
µ
F, I
LOAD
– 50mA
f = 1kHz, C
BYP
= 0.1
µ
F, I
LOAD
– 50mA
f = 10kHz, C
BYP
= 0.1
µ
F, I
LOAD
– 50mA
V
OUT
= 0V
C
OUT
= 1.0
µ
F, C
BYP
= 0.1
µ
F, f = 10Hz to
100kHz
V
IN
= 2.7V to 5.5V, regulator shutdown
V
IN
= 2.7V to 5.5V, regulator enabled
V
IL
< 0.4V, regulator shutdown
V
IH
> 1.6V, regulator enabled
Min
-2
-3
0.05
2
75
210
0.2
75
80
62
64
64
225
57
Typ
Max
2
3
0.2
3
500
2
120
150
Units
%
%
%
%
mV
mV
µA
µ
A
µ
A
dB
dB
dB
mA
µ
V
(rms)
0.2
1.6
0.01
0.01
150
10
40
500
150
V
V
µ
A
µ
A
°C
°C
µ
s
Ω
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. The
θ
JA
of the MIC5265x.xYD5 (all
versions) is 235°C/W on a PC board (see ”Thermal Considerations” section for further details).
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
5. Specification for packaged product only.
February 2007
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M9999-022307
Micrel, Inc.
MIC5265
Typical Characteristics
-70
-60
-50
-40
-30
-20
V
IN
= V
OUT
+ 1V
V
OUT
= 3.1V
BYP = 0.01µF
C
OUT
= 1µF
100mA
150mA
Power Supply
Rejection Ratio
50mA
-80
-70
-60
-50
-40
-30
Power Supply
Rejection Ratio
50mA
-70
-60
-50
Power Supply
Rejection Ratio
50mA
100mA
150mA
100mA
150mA
-40
-30
0
0.01 0.1
1
10
100
FREQUENCY (kHz)
1000
-20 V
IN
= V
OUT
+ 1V
V
OUT
= 3.1V
-10 BYP = 0.1µF
C
OUT
= 1µF
0
0.01 0.1
1
10
100
FREQUENCY (kHz)
1000
V
IN
= V
OUT
+ 1V
V
OUT
= 3.1V
-10 BYP = 1µF
C
OUT
= 1µF
0
10
100
1000
10000
0.01 0.1
1
10
100000
100
FREQUENCY (kHz)
-20
1000000
1000
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0
Dropout Voltage
vs. Output Current
125°C
0.30
0.25
Dropout Voltage
vs. Temperature
3.30
3.25
Dropout Voltage
vs. Temperature
25°C
0.20
0.15
150mA
100mA
50mA
10mA
1mA
3.20
3.15
3.10
3.05
3.00
2.95
2.90
-40 -15
Iload = 100µA
V
OUT
= 3.1V
V
IN
= V
OUT
+ 1
10 35 60 85 110
TEMPERATURE (°C)
-40°C
0.10
0.05
25 50 75 100 125 150
OUTPUT CURRENT (mA)
0.00
-40 -15 10
35 60 85 110
TEMPERATURE (°C)
Output Voltage
vs. Input Voltage
3
2.5
2
1.5
1
0.5
0
0
1
2
3
4
INPUT VOLTAGE(V)
5
100µA Load
150µA Load
3.0
2.9
2.8
2.7
2.6
2.5
Output Voltage
vs. Temperature
83
82
81
80
79
78
77
76
75
74
73
72 0
Ground Pin Current
vs. Output Current
V
IN
= 3.8V
V
OUT
= 2.8V
C
OUT
= 1µF
I
OUT
= 100µA
TEMPERATURE (°C)
V
IN
= V
OUT
+ 1V
V
OUT
= 3.1V
30
60
90
120 150
OUTPUT CURRENT (mA)
Ground Pin Current
vs. Temperature
78
76
74
72
70
68
-40
Iload = 100µA
-10
20
50
80 110
TEMPERATURE (°C)
95
90
85
80
75
70
65
60
-40
Ground Pin Current
vs. Temperature
90
80
70
60
50
40
30
20
10
0
0
Ground Pin Current
vs. Input Voltage
Iload = 150mA
-10
20
50
80 110
TEMPERATURE (°C)
Iload = 100µA
V
OUT
= 3.1V
V
IN
= V
OUT
+ 1
1
2
3
4
INPUT VOLTAGE (V)
5
February 2007
5
M9999-022307
嵌入式系统
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