Micrel MIC5264-3.3/2.5YML 150ma î¼cap dual ldo regulator Datasheet

MIC5264
150mA µCap Dual LDO Regulator
General Description
Features
The MIC5264 is a dual 150mA LDO in tiny 2.5mm x
2.5mm MLF® packaging ideal for applications where cost
is the priority. The MIC5264 is ideal for any application in
portable electronics, including both RF and Digital
applications. With low output noise and high PSRR, the
MIC5264 is ideal for noise sensitive RF applications. While
the fast transient response and active shutdown circuitry
makes it well-suited for powering digital circuitry.
The MIC5264 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. Each
LDO is completely independent and can be powered
independently, making it easier to use in distributed power
applications.
•
•
•
•
•
•
•
•
•
•
2.7V to 5.5V supply voltage.
Low 75µA quiescent current per LDO.
Tiny 2.5mm x 2.5mm MLF® package.
Low Noise – 57µVrms.
High PSRR – 60dB at 1kHz.
Low dropout voltage – 210mV at 150mA.
Stable with ceramic output capacitors.
Independent enable pins.
Fast transient response.
Active shutdown on both outputs.
Applications
•
•
•
Cellular Telephones
PDAs
GPS Receivers
The MIC5264 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
Typical Application
MIC5264-xxYML
-80
VIN 1
VIN 2
EN 1
EN 2
1µF
0.01µF
BYP1
Rx/Synth
Tx
OUT 1
OUT 2
1µF
GND
BYP2
1µF
RF
Transceiver
0.01µF
RF Power Supply
-70
Power Supply
Rejection Ratio
50mA
-60
-50
-40
100mA
150mA
-30
-20 VIN = VOUT + 1V
VOUT = 3.0V
-10 BYP = 0.1µF
COUT = 1µF
0
0.01 0.1
1
10
100
FREQUENCY (kHz)
1000
MicroLeadFrame and MLF are 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
May 2006
M9999-052406
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Micrel, Inc.
MIC5264
Ordering Information
Vo1/Vo2
Marking
Code
Junction Temp.
Range
Package
Pb-Free
MIC5264-JGYML
2.5V/1.8V
MAJG
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-2.6/1.8YML
MIC5264-KGYML
2.6V/1.8V
MAKG
–40°C to +125°C
2.5mm x 2.5mm MLF
®
MIC5264-2.6/2.6YML
MIC5264-KKYML
2.6V/2.6V
MAKK
–40°C to +125°C
2.5mm x 2.5mm MLF
®
MIC5264-2.8/1.5YML
MIC5264-MFYML
2.8V/1.5V
MAMF
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-2.8/2.5YML
MIC5264-MJYML
2.8V/2.5V
MAMJ
–40°C to +125°C
2.5mm x 2.5mm MLF
MIC5264-2.8/2.6YML
MIC5264-MKYML
2.8V/2.6V
MAMK
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-2.8/2.8YML
MIC5264-MMYML
2.8V/28V
MAMM
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-2.85/1.8YML
MIC5264-NGYML
2.85V/1.8V
MANG
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-2.85/2.85YML
MIC5264-NNYML
2.85V/2.85V
MANN
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-2.9/1.5YML
MIC5264-OFYML
2.9V/1.5V
MAOF
–40°C to +125°C
2.5mm x 2.5mm MLF
MIC5264-2.9/1.8YML
MIC5264-OGYML
2.9V/1.8V
MAOG
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-2.9/2.6YML
MIC5264-OKYML
2.9V/2.6V
MAOK
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-3.0/1.8YML
MIC5264-PGYML
3.0V/1.8V
MAPG
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-3.0/2.5YML
MIC5264-PJYML
3.0V/2.5V
MAPJ
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-3.0/2.8YML
MIC5264-PMYML
3.0V/2.8V
MAPM
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-3.0/3.0YML
MIC5264-PPYML
3.0V/3.0V
MAPP
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-3.3/1.8YML
MIC5264-SGYML
3.3V/1.8V
MASG
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-3.3/2.5YML
MIC5264-SJYML
3.3V/2.5V
MASJ
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-3.3/3.0YML
MIC5264-SPYML
3.3V/3.0V
MASP
–40°C to +125°C
2.5mm x 2.5mm MLF®
MIC5264-3.3/3.3YML
MIC5264-SSYML
3.3V/3.3V
MASS
–40°C to +125°C
2.5mm x 2.5mm MLF®
Part Number
Full
Manufacturing
MIC5264-2.5/1.8YML
®
®
Note:
1. Other Voltage Combinations available. Contact Micrel for details.
May 2006
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(408) 955-1690
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MIC5264
Pin Configuration
10 EN1
GND1 1
IN1 2
9 BYP1
OUT1 3
8 OUT2
BYP2 4
7 IN2
EN2 5
6 GND2
2.5mm × 2.5mm MLF-10L (ML)
Pin Description
Pin Number
1
Pin Name
2
IN1
3
OUT1
Regulator Output
4
BYP2
Reference Bypass: Connect external 0.01µF <= CBYP <= 1.0µF capacitor to
GND to reduce output noise. Do not leave open.
5
EN2
6
GND2
7
IN2
8
OUT2
Regulator Output
9
BYP1
Reference Bypass: Connect external 0.01µF <= CBYP <= 1.0µF capacitor to
GND to reduce output noise. Do not leave open.
10
EN1
EP
Exposed Pad
May 2006
GND1
Pin Function
Ground
Supply Voltage
Enable/Shutdown (Input): CMOS compatible input. Logic high = enable; logic low
= shutdown. Do not leave open.
Ground
Supply Voltage
Enable/Shutdown (Input): CMOS compatible input. Logic high = enable; logic low
= shutdown. Do not leave open.
Exposed Pad. Connect to external ground pins.
3
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MIC5264
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Input Voltage (VIN1/IN2) .............................. 0V to +7V
Enable Input Voltage (V EN1/EN2)............................ 0V to +7V
Power Dissipation (PD) .......................... Internally Limited (3)
Junction Temperature (TJ) ...........................-40°C to 125°C
Lead Temperature (soldering, #sec.)...........-55°C to 150°C
Storage Temperature (Ts) .......................................... 260°C
EDS Rating (4) ................................................................. 2kV
Supply Input Voltage (VIN1/IN2) ...................... +2.7V to +5.5V
Enable Input Voltage (VEN1/EN2) ............................ 0V to +VIN
Junction Temperature (TA) ........................ –40°C to +125°C
Junction Thermal Resistance
MLF-10L (θJA) ....................................................75°C/W
Electrical Characteristics(5)
VEN = VIN = VOUT + 1V; IL =100µA; CL = 1.0µF; CBYP = 0.01µF per output; TA = 25°C, bold values indicate –40°C< TA <
+85°C; unless noted.
Parameter
Condition
Output Voltage Accuracy
IOUT = 100uA
Line Regulation
VIN = VOUT +1V to 5.5V
0.05
Load Regulation
IOUT = 0.1mA to 150mA
2
Dropout Voltage
IOUT = 50mA
IOUT = 150mA
VEN < 0.4V
75
210
0.2
Current Limit
IOUT = 0mA
IOUT = 150mA
f = 100Hz, CBYP = 0.1µF, ILOAD = 50mA
f = 1kHz, CBYP = 0.1µF, ILOAD = 50mA
f = 10kHz, CBYP = 0.1µF, ILOAD = 50mA
VOUT = 0V
75
80
62
64
64
225
Output Noise
COUT = 1.0µF, CBYP = 0.1µF, f = 10Hz to 100kHz
57
Quiescent Current
Ground Pin Current (Per
Regulator)
PSRR (Ripple Rejection)
Enable Input (EN1 and EN2)
Enable Input Logic Low
Enable Input Logic High
Enable Input Current
Min
Typ
-2
-3
VIN = 2.7V to 5.5V, regulator shutdown
VIN = 2.7V to 5.5V, regulator enabled
VIL < 0.4V, regulator shutdown
VIH > 1.6V, regulator enabled
Thermal Shutdown
Thermal Shutdown Temperature
Max
Units
2
3
0.2
%
%
%
3
%
500
2
mV
mV
µA
120
150
µV (rms)
0.2
1.6
0.01
0.01
10
40
500
V
V
µA
µA
°C
°C
150
Hysteresis
Turn-on/Turn-off Characteristics
Turn-on Time
Discharge Resistance
µA
µA
dB
dB
dB
mA
150
µs
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 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. The θJA of the MIC5264x.xYML (all versions) is
75°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.
May 2006
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MIC5264
Typical Characteristics
-70
Power Supply
Rejection Ratio
-80
100mA
-50
150mA
-40
150mA
-40
-30
1000
Dropout Voltage
vs. Output Current
-20 VIN = VOUT + 1V
VOUT = 3.0V
-10 BYP = 0.1µF
COUT = 1µF
0
0.01 0.1
1
10
100
FREQUENCY (kHz)
0.30
1000
Dropout Voltage
vs. Temperature
0.20
0.20
0.15
0.15
-40°C
0.10
0.10
0.00
0
Output Voltage
vs. Input Voltage
3
2.5
100µA Load
3.00
2.95
50mA
150µA Load
2
1.5
1
0.5
0
0
95
1
2
3
4
INPUT VOLTAGE(V)
Ground Pin Current
vs. Temperature
5
10mA
1mA
2.85
0.00
-40 -15 10
35 60 85 110
TEMPERATURE (°C)
83
82
81
80
79
78
77
76
75
74
73
72 0
90
85
Ground Pin Current
vs. Output Current
Ground Pin Current
vs. Temperature
78
76
74
72
VIN = VOUT + 1V
VOUT = 3.0V
30
60
90
120 150
OUTPUT CURRENT (mA)
Ground Pin Current
vs. Input Voltage
70
68
-40
90
70
70
60
60
50
50
75
40
40
30
30
65
60
-40
May 2006
20
Iload = 150mA
-10
20
50
80 110
TEMPERATURE (°C)
20
Iload = 100µA
VOUT = 3.0V
VIN = VOUT + 1
10
0
0
Iload = 100µA
-10
20
50
80 110
TEMPERATURE (°C)
Ground Pin Current
vs. Input Voltage
80
80
70
Iload = 100µA
VOUT = 3.0V
VIN = VOUT + 1
2.80
-40 -15 10
35 60 85 110
TEMPERATURE (°C)
80
90
Dropout Voltage
vs. Temperature
3.05
100mA
0.05
25 50
75 100 125 150
OUTPUT CURRENT (mA)
1000
1000000
3.10
150mA
2.90
0.05
150mA
3.15
0.25
25°C
100mA
-20
VIN = VOUT + 1V
VOUT = 3.0V
-10 BYP = 1µF
COUT = 1µF
0
10
100
1000
10000
0.01 0.1
1
10 100000
100
FREQUENCY (kHz)
3.20
125°C
0.25
50mA
-30
-30
-20
VIN = VOUT + 1V
VOUT = 3.0V
-10 BYP
= 0.01µF
COUT = 1µF
0
0.01 0.1
1
10
100
FREQUENCY (kHz)
0.30
-50
100mA
Power Supply
Rejection Ratio
-60
-60
-50
-40
-70
50mA
-70
50mA
-60
Power Supply
Rejection Ratio
1
2
3
4
INPUT VOLTAGE (V)
5
10
5
0
0
Iload = 150µA
VOUT = 3.0V
VIN = VOUT + 1
1
2
3
4
INPUT VOLTAGE (V)
5
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MIC5264
Typical Characteristics (continued)
Short Circuit Current
vs. Input Voltage
10
290
270
Output Noise
Spectral Density
1
250
230
0.1
210
190
170
150
3
May 2006
3.5
4
4.5
5
INPUT VOLTAGE (V)
5.5
VIN = 4.2V
0.01 VOUT = 2.8V
COUT = 1.0µF
BYP = 0.1µF
IOUT = 150mA
0.001
10
100
1000
10000
1000000
10000000
0.01
0.1
1
10 100000
100 1000
10000
FREQUENCY (kHz)
6
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MIC5264
Functional Characteristics
Load Transient Response
Output Voltage
(50mV/div)
5.0V
4.0V
COUT = 1µF Ceramic
CBYP = 0.01µF
IOUT = 150mA
VOUT = 3.0V
VIN = V OUT + 1V
150mA
Output Current
(50mA/div)
Output Voltage
(20mV/div)
Input Voltage
(1V/div)
Line Transient Response
Time (400µs/div)
COUT = 1µF Ceramic
CBYP = 0.01µF
VOUT = 3.0V
VIN = V OUT + 1V
Time (5µs/div)
Shutdown Delay
CIN = 1µF Ceramic
COUT = 1µF Ceramic
IOUT = 10mA
VOUT = 3.0V
VIN = V OUT + 1V
Enable Voltage
(1V/div)
Enable Voltage
(1V/div)
Output Voltage
(1V/div)
Output Voltage
(1V/div)
Enable Pin Delay
CIN = 1µF Ceramic
CBYP = 0.01µF
IOUT = 10mA
VOUT = 3.0V
VIN = VOUT + 1V
Time (10µs/div)
May 2006
100µA
Time (100µs/div)
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Micrel, Inc.
MIC5264
Block Diagram
IN1
Reference
Voltage
Startup/
Shutdown
Control
Quickstart/
Noise
Cancellation
BYP1
EN1
Thermal
Sensor
FAULT
Error
Amplifier
Current
Amplifier
OUT1
Undervoltage
Lockout
ACTIVE SHUTDOWN
GND1
IN2
Reference
Voltage
Startup/
Shutdown
Control
Quickstart/
Noise
Cancellation
BYP2
EN2
Thermal
Sensor
FAULT
Error
Amplifier
Current
Amplifier
OUT2
Undervoltage
Lockout
ACTIVE SHUTDOWN
GND2
MIC5264 Diagram
May 2006
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Micrel, Inc.
MIC5264
increases slightly with respect to bypass capacitance. A
unique quick-start circuit allows the MIC5264 to drive a
large capacitor on the bypass pin without significantly
slowing turn-on time.
Application Information
Enable/Shutdown
The MIC5264 comes with two independent active-high
enable pins that allow the regulator in each output to be
disabled separately. 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. This part is CMOS and the enable pin
cannot be left floating; a floating enable pin may cause
an indeterminate state on the output.
Active Shutdown
The MIC5264 also features an active shutdown clamp,
which is an N-channel MOSFET that turns on when the
device is disabled. This allows the output capacitor and
load to discharge, de-energizing the load.
No-Load Stability
The MIC5264 will remain stable and in regulation with no
load unlike many other voltage regulators. This is
especially important in CMOS RAM keep-alive
applications.
Input Capacitor
The MIC5264 is a high performance, high bandwidth
device. Therefore, it requires well-bypassed input
supplies for optimal performance. A 1uF capacitor is
required from the input to ground to provide stability.
Low-ESR
ceramic
capacitors
provide
optimal
performance at a minimum of space. Additional highfrequency capacitors, such as small valued NPO
dielectric type capacitors, help filter out high-frequency
noise and are good practice in any RF-based circuit.
Thermal Considerations
The MIC5264 is designed to provide 150mA of
continuous current per output in a very small package.
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 VOUT1 output voltage is 3.0V at 150mA; VOUT2
output voltage is 2.8V at 100mA.
Output Capacitor
The MIC5264 requires capacitors at both outputs for
stability. The design requires 1uF or greater on each
output to maintain stability. The design is optimized for
use with low-ESR ceramic chip capacitors. High ESR
capacitors may cause high frequency oscillation. The
maximum recommended ESR is 300mΩ. The output
capacitor can be increased, but performance has been
optimized for a 1uF ceramic output capacitor and does
not improve significantly with larger capacitance.
The actual power dissipation of the regulator circuit can
be determined using the equation:
PD = (VIN – VOUT) IOUT + VIN IGND
Because this device is CMOS and the ground current is
typically <100uA over the load range, the power
dissipation contributed by the ground current is < 1%
and can be ignored for this calculation.
PD = (5.0V-3.0V) x 150mA + (5.0V-2.8V) x 100mA
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 = 0.52W
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:
⎛ T J (max) − T A
PD(max) = ⎜⎜
θ JA
⎝
TJ(max) = 125°C, the max. junction temperature of the die
θJA thermal resistance = 63°C/W
Bypass Capacitor
A capacitor can be placed from the noise bypass pin to
ground to reduce output voltage noise. The capacitor
bypasses the internal reference. A 0.01uF capacitor is
recommended for applications that require low-noise
outputs. The bypass capacitor can be increased, further
reducing noise and improving PSRR. Turn-on time
May 2006
⎞
⎟
⎟
⎠
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Micrel, Inc.
MIC5264
MIC5264 Junction-To-Ambient Thermal Resistance
Package
2.5mm x 2.5mm
MLF-10
θJA Recommended
Minimum Footprint
θJC
75°C/W
2°C/W
⎛ 125°C − T A
0.52W = ⎜⎜
63°C
⎝
TA = 92.24°C
Therefore, a 3.0V application at 150mA on Ch1 and 2.8V
at 100mA on Ch2 can accept an ambient operating
temperature of 92°C in a 10-pin 2.5mm x 2.5mm 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:
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-toambient thermal resistance for the minimum footprint is
63°C/W. The maximum power dissipation must not be
exceeded for proper operation.
For example, when operating the MIC5264PMYML at an
input voltage of 5.0V at 150mA on VOUT1 and 100mA on
VOUT2 with a minimum footprint layout, the maximum
ambient operating temperature TA can be determined as
follows:
May 2006
⎞
⎟⎟
⎠
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
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MIC5264
Package Information
10-Pin MLF (ML)
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.
© 2005 Micrel, Incorporated.
May 2006
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