LX8221
®
TM
Dual 150mA CMOS Low Dropout Regulator
PRODUCTION DATA SHEET
KEY FEATURES
DESCRIPTION
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 &
The LX8221 family of dual output
Overall regulator efficiency has been
linear regulators provide for the improved with a minimized operating
selection of either fixed or adjustable ground current (typical < 140µA per
output voltages, and combine low regulator). Further, this ground current
dropout operation, fast transient is virtually eliminated in shutdown mode
performance, tight output voltage (typical < 1µA).
accuracy, and ultra-low ground current
within a very small package footprint.
Other safety features include channel
independent Thermal and Short Circuit
The PMOS output transistor allows Current protection.
Temperature Protection
Stable with Ceramic or
Tantalum Capacitors
for an ultra-low dropout characteristic
Separate Enable pins allow each
(e.g., typically less than 175mV at regulator to be switched on and off
100mA). The individual regulators can independently by applying a TTL logic
be powered from either separate supply level control signal to the Enable pin
voltages or the same supply voltage further enhancing system level power
between 2.8V to 6V allowing for management.
APPLICATIONS
Battery Operated Systems
Laptop, Notebook and PDA’s
Cellular Telephones/Pagers
Instrumentation
Linear Post Regulators for
SMPS
maximum system flexibility.
These features combined with a small
An optional ceramic or tantalum type footprint (i.e., 10-pin MSOP package)
capacitor may be connected to each make the LX8221 especially useful for
Bypass pin separately to improve battery-operated equipment such as
performance in critical low-noise cellular telephones, laptop computers
applications.
and PDA equipment.
IMPORTANT: For the most current data, consult Microsemi’s website: http://www.microsemi.com
PRODUCT HIGHLIGHT
5.0V
3.3V
5.0V
To Control Logic
On
N/C
N/C
To Control Logic
On
VIN2
VIN1
CB1
ADJ
VIN2
VIN1
CB1
ADJ
EN1
EN2
EN1
EN2
}
}
Off
Off
3.3V
VOUT1
VOUT2
VOUT1
VOUT2
GND
GND
R1
R2
R1
R2
R2
R1
Fixed / Adjustable Application
Adjustable / Adjustable Application
PACKAGE ORDER INFO
Plastic MSOP 10-Pin
RoHS Compliant / Pb-free
Transition D/C: 0432
VOUT1
VOUT2
Package Marking
TA (°C)
DU
-40 to 85
-40 to 85
-40 to 85
-40 to 85
Adjustable
2.5V
Adjustable
Adjustable
Adjustable
Adjustable
LX8221AIDU
LX8221BIDU
LX8221DIDU
LX8221GIDU
8221 AIDU LX
8221 BIDU LX
8221 DIDU LX
8221 GIDU LX
2.7V
3.0V
Contact Microsemi for additional / available options
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
Microsemi
Integrated Products Division
Page 1
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570