LX8820 Datasheet, PDF (1/6 Pages) Microsemi Corporation – 3.3V/1.0A Ultra Low Dropout Regulator

LX8820
®
3.3V/1.0A Ultra Low Dropout Regulator
TM
PRODUCTION DATA SHEET
DESCRIPTION
The LX8820 is an ultra low- The low RDS_ON of the PMOS output
dropout single output positive- stage results in ultra low dropout
voltage linear regulator. The (typically 0.45V @ 1A).
regulator has a precise, fixed Output voltage overshoot is
output capable of delivering 1.2 controlled using slew rate control, as
amps.
V_IN is applied, typically V_OUT overshoot
The LX8820 output is internally < 2% for V_IN ≤ 1V/µS ramp. Transient
programmed for 3.3V.
response to a Step Load is fast and
Regulator stability is maintained controlled, V_OUT overshoot remains
with any capacitor ESR, allowing within 2% of nominal for 400mA step
ceramic, tantalum or electrolytic sizes.
types. Capacitance range is Thermal Shutdown, Current Limit
flexible beginning with 2.2µF to and Short Circuit Current protection
large values.
are integrated on-chip for survival
The CMOS wafer process during fault conditions.
increasing regulator efficiency by Microsemi’s small 3x3mm body size
minimizing operating ground (MO-229) package enables maximum
current (typically <200µA). power dissipation with a minimum
compared to BiPolar technology . surface mount area.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATURES
ƒ Accurate Output Voltage
ƒ Typical Dropout of 0.7V at 1A
and 0.25V at 0.8A
ƒ Independent Thermal and
Current Limit Protection
ƒ Low Tolerance Load Regulation
(0.4%)
ƒ Wide DC Supply Voltage of 4V
to 10V
ƒ Loop Stability Independent of
Output Capacitor Type
ƒ JEDEC MO-229 surface mount
package / RoHS Compliant
APPLICATIONS/BENEFITS
ƒ 5V to 3.3V Regulators
ƒ Hard Disk Drives, CD-ROMs
ƒ ADSL and Cable Modems
ƒ Battery Charging Circuits
ƒ Instrumentation
ƒ PC Peripherals
APPLICATION CIRCUITS
V_IN 3.8 to 6V
4.7µF
1
V_IN
2
GND
3
N.C.
6
V_IN
5
V_OUT
4
V_OUT
LX8820
V_OUT 3.3V @ 1A
4.7µF
T_J (°C)
0 to 125
PACKAGE ORDER INFO
OUTPUT V
Plastic MLP 6-
LM _PIN
RoHS Compliant / Pb-free
3.3V
LX8820-33CLM
Part Marking
882J or 8820
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8820-33CLM-TR)
Copyright © 2004
Rev. 1.1, 2005-02-24
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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