MIC5264
150mA Cap Dual LDO Regulator
Micro
LeadFrame 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
April 2005
M9999-041505
(408) 955-1690
General Description
The MIC5264 is a dual 150mA LDO in tiny 2.5mm x
2.5mm MLFTM 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.
The MIC5264 offers low dropout voltage (210mV at
150mA), low output noise (57Vrms), 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 75A quiescent current per LDO.
Tiny 2.5mm x 2.5mm MLFTM package.
Low Noise 57Vrms.
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
Typical Application
MIC5264-xxYML
EN 2
VIN 1
OUT 1
BYP1
GND
VIN 2
EN 1
BYP2
OUT 2
Rx/Synth
Tx
RF
Transceiver
0.01F
1F
1F
1F
0.01F
RF Power Supply
0
-10
-20
-40
-50
-60
-70
0.01 0.1
1 10 100 1000
FREQUENCY (kHz)
Power Supply
Rejection Ratio
-30
-80
V
IN
= V
OUT
+ 1V
V
OUT
= 3.0V
BYP = 0.1F
C
OUT
= 1F
Micrel, Inc.
MIC5264
April 2005
2
M9999-041505
(408) 955-1690
Ordering Information
Part Number
Full Manufacturing
Vo1/Vo2
Marking
Code
Junction Temp.
Range
Package
Pb-Free
MIC5264-2.8/1.5YML
MIC5264-MFYML
2.8V/1.5V
MAMF
40C to +125C
2.5mm x 2.5mm MLFTM
MIC5264-2.8/2.8YML
MIC5264-MMYML
2.8V/2.8V
MAMM
40C to +125C
2.5mm x 2.5mm MLFTM
MIC5264-2.85/2.85YML
MIC5264-NNYML
2.85V/2.85V
MANN
40C to +125C
2.5mm x 2.5mm MLFTM
MIC5264-3.0/1.8YML
MIC5264-PGYML
3.0V/1.8V
MAPG
40C to +125C
2.5mm x 2.5mm MLFTM
MIC5264-3.0/2.8YML
MIC5264-PMYML
3.0V/2.8V
MAPM
40C to +125C
2.5mm x 2.5mm MLFTM
MIC5264-3.0/3.0YML
MIC5264-PPYML
3.0V/3.0V
MAPP
40C to +125C
2.5mm x 2.5mm MLFTM
Note:
1. Other Voltage Combinations available. Contact Micrel for details.
Pin Configuration
EN2
GND2
5
1
GND1
IN1
OUT1
BYP2
10 EN1
BYP1
OUT2
IN2
9
8
7
2
3
4
6
2.5mm 2.5mm MLF-10L (ML)
Pin Description
Pin Number
Pin Name
Pin Function
1
GND1 Ground
2
IN1 Supply
Voltage
3
OUT1 Regulator
Output
4
BYP2
Reference Bypass: Connect external 0.01F <= C
BYP
<=
1.0F capacitor to
GND to reduce output noise. Do not leave open.
5
EN2
Enable/Shutdown (Input): CMOS compatible input. Logic high = enable; logic low
= shutdown. Do not leave open.
6
GND2 Ground
7
IN2 Supply
Voltage
8
OUT2 Regulator
Output
9
BYP1
Reference Bypass: Connect external 0.01F <= C
BYP
<= 1.0F capacitor to
GND to reduce output noise. Do not leave open.
10
EN1
Enable/Shutdown (Input): CMOS compatible input. Logic high = enable; logic low
= shutdown. Do not leave open.
EP
Exposed Pad Exposed Pad. Connect to external ground pins.
Micrel, Inc.
MIC5264
April 2005
3
M9999-041505
(408) 955-1690
Absolute Maximum Ratings
(1)
Supply Input Voltage (V
IN1/IN2
) .............................. 0V to +7V
Enable Input Voltage (V
EN1/EN2
)............................ 0V to +7V
Power Dissipation (P
D
) .......................... Internally Limited
(3)
Junction Temperature (T
J
) ...........................-40C to 125C
Lead Temperature (soldering, #sec.)...........-55C to 150C
Storage Temperature (T
s
) .......................................... 260C
EDS Rating
(4)
................................................................. 2kV
Operating Ratings
(2)
Supply Input Voltage (V
IN1/IN2
) ...................... +2.7V to +5.5V
Enable Input Voltage (V
EN1/EN2
) ............................ 0V to +V
IN
Junction Temperature (T
A
) ........................ 40C to +125C
Junction Thermal Resistance
MLF-10L
(
JA
) ....................................................75C/W
Electrical Characteristics
(5)
V
EN
= V
IN
= V
OUT
+ 1V; I
L
=100A; C
L
= 1.0F; C
BYP
= 0.01F per output; T
A
= 25C, bold values indicate 40C< T
A
<
+85C; unless noted.
Parameter
Condition
Min
Typ
Max
Units
Output Voltage Accuracy
I
OUT
= 100uA
-2
-3
2
3
%
%
Line Regulation
V
IN
= V
OUT
+1V to 5.5V
0.05
0.2
%
Load Regulation
I
OUT
= 0.1mA to 150mA
2
3
%
Dropout Voltage
I
OUT
= 50mA
I
OUT
= 150mA
75
210
500
mV
mV
Quiescent Current
V
EN
< 0.4V
0.2
2
A
Ground Pin Current (Per
Regulator)
I
OUT
= 0mA
I
OUT
= 150mA
75
80
120
150
A
A
PSRR (Ripple Rejection)
f = 100Hz, C
BYP
= 0.1F, I
LOAD
= 50mA
f = 1kHz, C
BYP
= 0.1F, I
LOAD
= 50mA
f = 10kHz, C
BYP
= 0.1F, I
LOAD
= 50mA
62
64
64
dB
dB
dB
Current Limit
V
OUT
= 0V
225
mA
Output Noise
C
OUT
= 1.0F, C
BYP
= 0.1F, f = 10Hz to 100kHz
57
V (rms)
Enable Input (EN1 and EN2)
Enable Input Logic Low
V
IN
= 2.7V to 5.5V, regulator shutdown
0.2
V
Enable Input Logic High
V
IN
= 2.7V to 5.5V, regulator enabled
1.6
V
Enable Input Current
V
IL
< 0.4V, regulator shutdown
V
IH
> 1.6V, regulator enabled
0.01
0.01
A
A
Thermal Shutdown
Thermal Shutdown Temperature
150
C
Hysteresis
10
C
Turn-on/Turn-off Characteristics
Turn-on Time
40
150
s
Discharge Resistance
500
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
)/
JA
. Exceeding the maximum allowable power
dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. The
JA
of the MIC5264x.xYML (all versions) is
75C/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.
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