LX8820 Microsemi Corporation, LX8820 Datasheet

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LX8820

Manufacturer Part Number
LX8820
Description
3.3v/1.0a Ultra Low Dropout Regulator
Manufacturer
Microsemi Corporation
Datasheet
Copyright © 2004
Rev. 1.1, 2005-02-24
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
dropout single output positive-
voltage
regulator has a precise, fixed
output capable of delivering 1.2
amps.
programmed for 3.3V.
with any capacitor ESR, allowing
ceramic, tantalum
types.
flexible beginning with 2.2µF to
large values.
increasing regulator efficiency by
minimizing
current
compared to BiPolar technology .
The LX8820 is an ultra low-
The LX8820 output is internally
Regulator stability is maintained
The
V
IN
TM
CMOS
Capacitance
3.8 to 6V
linear
(typically
operating
wafer
regulator.
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8820-33CLM-TR)
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
or electrolytic
0 to 125
T
J
range
(°C)
<200µA).
D E S C R I P T I O N
4.7µF
process
ground
The
is
stage results in ultra low dropout
(typically 0.45V @ 1A).
controlled using slew rate control, as
V
< 2% for V
response to a Step Load is fast and
controlled, V
within 2% of nominal for 400mA step
sizes.
and Short Circuit Current protection
are integrated on-chip for survival
during fault conditions.
(MO-229) package enables maximum
power dissipation with a minimum
surface mount area.
O
IN
The low RDS
Output
Thermal Shutdown, Current Limit
Microsemi’s small 3x3mm body size
UTPUT
3.3V
A P P L I C A T I O N C I R C U I T S
is applied, typically V
1
2
3
Integrated Products Division
V
PACKAGE ORDER INFO
LX8820
V
GND
N.C.
IN
Microsemi
voltage
®
IN
≤ 1V/µS ramp. Transient
LM
OUT
RoHS Compliant / Pb-free
ON
LX8820-33CLM
of the PMOS output
overshoot remains
Plastic MLP 6-
PIN
V
V
3.3V/1.0A Ultra Low Dropout Regulator
overshoot
OUT
OUT
V
OUT
IN
overshoot
6
5
4
P
RODUCTION DATA SHEET
is
882J or 8820
Part Marking
Accurate Output Voltage
Typical Dropout of 0.7V at 1A
and 0.25V at 0.8A
Independent Thermal and
Current Limit Protection
Low Tolerance Load Regulation
(0.4%)
Wide DC Supply Voltage of 4V
to 10V
Loop Stability Independent of
Output Capacitor Type
JEDEC MO-229 surface mount
package / RoHS Compliant
5V to 3.3V Regulators
Hard Disk Drives, CD-ROMs
ADSL and Cable Modems
Battery Charging Circuits
Instrumentation
PC Peripherals
APPLICATIONS/BENEFITS
4.7µF
K E Y F E A T U R E S
V
OUT
3.3V @ 1A
LX8820
Page 1

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LX8820 Summary of contents

Page 1

... IN 4.7µF T (° 125 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 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 3.3V/1.0A Ultra Low Dropout Regulator ® The low RDS ...

Page 2

... LM P ACKAGE (Top View) Heatsink must be connected to GND or left floating (see pg 7 for details) . N/C = Not internally connected, don’t care for PCB layout consideration. RoHS / Pb-free 100% Matte Tin Lead Finish LX8820-33 Units Min Typ Max 4.5 10 1200 125 IN OUT OUT ...

Page 3

... Bias + - 1.25V V REF LX8820 Figure 1 – Fixed Output Microsemi Integrated Products Division LX8820 P RODUCTION DATA SHEET ≤ ≤ T 125°C except where A = 4.7µF (ceramic), & LX8820-33 Min Typ Max 3.234 3.300 3.366 0.45 3.0 3.3 3.383 < 1A OUT 3.63 3.0 1.0 1.5 0 0.1 205 ...

Page 4

... TM LX8820 TEMP STABILITY, Iout=5ma 3.304 3.302 3.300 3.298 3.296 3.294 3.292 3.290 3.288 3.286 3.284 3.282 3.280 -50 - TEMP, °C SUPPLY VOLTAGE, FAST TURN ON (T CH1: V (Light Blue) CH2 OUT IN Load Current Copyright © 2004 Rev. 1.1, 2005-02-24 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 3.3V/1.0A Ultra Low Dropout Regulator ® ...

Page 5

... JEDEC MO-229 package that offer maximum power dissipation in a low profile surface mount technology. The LX8820 output is fixed at 3.3V output and can supply up to one amp with a regulator design optimized for system efficiency by consuming minimal ground current and directing quiescent current to the load ...

Page 6

... Internally Connected together, but L2 isolated from all Θ other terminals Microsemi Integrated Products Division LX8820 P RODUCTION DATA SHEET M I ILLIMETERS NCHES MIN MAX MIN MAX 0.80 1.00 0.032 0.040 0.00 0.05 0 0.002 0.20 REF 0.008 REF 0.30 0.45 0.012 ...

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