LX8221 Microsemi Corporation, LX8221 Datasheet

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LX8221

Manufacturer Part Number
LX8221
Description
Dual 150ma Cmos Low Dropout Regulator
Manufacturer
Microsemi Corporation
Datasheet

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Part Number
Manufacturer
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Part Number:
LX8221-DIDU
Manufacturer:
Microsemi Analog Mixed Signal
Quantity:
135
Copyright © 2000
Rev. 1.1a, 2006-01-19
linear
selection of either fixed or adjustable
output voltages, and combine low
dropout
performance,
accuracy, and ultra-low ground current
within a very small package footprint.
for an ultra-low dropout characteristic
(e.g., typically less than 175mV at
100mA). The individual regulators can
be powered from either separate supply
voltages or the same supply voltage
between 2.8V to 6V allowing for
maximum system flexibility.
capacitor may be connected to each
Bypass pin separately to improve
performance
applications.
5.0V
3.3V
IMPORTANT: For the most current data, consult Microsemi’s website: http://www.microsemi.com
The LX8221 family of dual output
The PMOS output transistor allows
An optional ceramic or tantalum type
TM
regulators
operation,
-40 to 85
-40 to 85
-40 to 85
-40 to 85
T
in
Fixed / Adjustable Application
tight
A
(°C)
critical
provide
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
VIN2
VIN1
CB1
ADJ
output
fast
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8221AIDU-TR)
Adjustable
GND
N/C
VOUT1
low-noise
D E S C R I P T I O N
for
transient
2.5V
2.7V
3.0V
VOUT1
VOUT2
voltage
EN2
EN1
the
}
Contact Microsemi for additional / available options
improved with a minimized operating
ground current (typical < 140µA per
regulator). Further, this ground current
is virtually eliminated in shutdown mode
(typical < 1µA).
independent Thermal and Short Circuit
Current protection.
regulator to be switched on and off
independently by applying a TTL logic
level control signal to the Enable pin
further enhancing system level power
management.
footprint (i.e., 10-pin MSOP package)
make the LX8221 especially useful for
battery-operated equipment such as
cellular telephones, laptop computers
and PDA equipment.
Adjustable
Adjustable
Adjustable
Adjustable
P R O D U C T H I G H L I G H T
To Control Logic
Off
VOUT2
Overall regulator efficiency has been
Other safety features include channel
Separate Enable pins allow each
These features combined with a small
Integrated Products Division
R2
R1
P A C K A G E O R D E R I N F O
®
Microsemi
On
DU
Dual 150mA CMOS Low Dropout Regulator
5.0V
3.3V
Plastic MSOP 10-Pin
RoHS Compliant / Pb-free
Transition D/C: 0432
LX8221AIDU
LX8221BIDU
LX8221DIDU
LX8221GIDU
Adjustable / Adjustable Application
P
R2
RODUCTION
R1
VIN2
VIN1
CB1
ADJ
GND
N/C
D
ATA
Compact Regulators With
Two 150mA Outputs
Dropout Voltage Typically
175mV @ 100mA
Ultra Low Shutdown
Current Typically Less
Than 1µA
Output Trimmed to 0.5%
Small MSOP-10 Package
Over Current &
Temperature Protection
Stable with Ceramic or
Tantalum Capacitors
Battery Operated Systems
Laptop, Notebook and PDA’s
Cellular Telephones/Pagers
Instrumentation
Linear Post Regulators for
SMPS
VOUT2
VOUT1
K E Y F E A T U R E S
EN2
EN1
Package Marking
APPLICATIONS
8221 AIDU LX
S
8221 BIDU LX
8221 DIDU LX
8221 GIDU LX
HEET
}
To Control Logic
Off
R2
R1
LX8221
On
Page 1

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LX8221 Summary of contents

Page 1

... Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8221AIDU-TR) Copyright © 2000 Rev. 1.1a, 2006-01-19 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® Dual 150mA CMOS Low Dropout Regulator Overall regulator efficiency has been ...

Page 2

... ESCRIPTION VIN1 VIN2 EN1 EN2 CURRENT LIMIT Microsemi Integrated Products Division LX8221 RODUCTION ATA HEET VOUT1 1 10 CB1 ...

Page 3

... Typ Max 2 0. 150 1 OUT 1.0* IN 1.0* 2.2 OUT ≤ ≤ T 85°C except A using low duty cycle pulse µ OUT J A LX8221 Min Typ Max -1 1 ≤ ≤ -2.5 2.5 IN 1.163 1.187 1.175 ≤ 6V 1.140 1.210 0.04 0.15 0.5 1.5 0.050 0.175 0.175 0.3 0.25 0.4 280 ...

Page 4

... If the Enable feature is not used, this pin can be connected to V Minimum Load Requirement Although line regulation is improved with a minimum load of 100µA, the LX8221 does not have a minimum load F ceramic type µ current in order to maintain stability. This is an especially important feature in certain applications ...

Page 5

... JA JA substrate. This will lower the device junction temperature improving overall output voltage accuracy. The input/output capacitors must be placed as close as possible to each voltage regulator output pin. Microsemi Integrated Products Division LX8221 RODUCTION ATA HEET ( ) = − ...

Page 6

... GND Figure 1 – Fixed / Adjustable Output Application N/C VIN2 EN1 VIN1 EN2 CB1 VOUT1 ADJ VOUT2 GND R2 R1 Figure 2 – Adjustable / Adjustable Output Application Microsemi Integrated Products Division LX8221 RODUCTION ATA HEET Resistor Table R1 = 13.0kΩ 10.0kΩ 3.0V 2. Resistor Table VOUT1 R1 = 13.0kΩ ...

Page 7

... 100 0.1 10 100 = C = 1µ 470pF OUT BY Microsemi Integrated Products Division LX8221 RODUCTION ATA HEET I =150mA L I =100mA L - 100 TEMPERATURE (° ...

Page 8

... Dual 150mA CMOS Low Dropout Regulator P RODUCTION Dim *LC * Lead Coplanarity Microsemi Integrated Products Division LX8221 D S ATA HEET M I ILLIMETERS NCHES MIN MAX MIN MAX 2.85 3.05 0.112 0.120 2.90 3.10 0.114 0.122 - 1 ...

Page 9

... Copyright © 2000 Rev. 1.1a, 2006-01-19 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® Dual 150mA CMOS Low Dropout Regulator P RODUCTION Microsemi Integrated Products Division LX8221 D S ATA HEET Page 9 ...

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