LX8820 Microsemi Corporation, LX8820 Datasheet - Page 3

• Manufacturer Part Number: LX8820
• Description: 3.3v/1.0a Ultra Low Dropout Regulator
• Manufacturer: Microsemi Corporation

Copyright © 2004
Rev. 1.1, 2005-02-24
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C
otherwise noted and the following test conditions: V
duty cycling methods.
Dropout Voltage
Fixed Output (3.3V)
Note 1: Minimum load current is defined as the amount of output current required to maintain regulation.
Note 2: Guaranteed by design.
Output Voltage
Line Regulation
Load Regulation
Transient Response;
V
Transient Response;
V
Current Limit
Minimum Load Current
Quiescent Current
Ripple Rejection
RMS Output Noise (% of V
Thermal Shutdown
OUT
OUT
Overshoot at Start-Up
Droop to Step Load
TM
Parameter
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
10µF
C1
OUT
)
GND
V
IN
Note: Application Circuit above using ceramic capacitors
∆V
∆V
Symbol
V
I
E L E C T R I C A L C H A R A C T E R I S T I C S
OUT (MAX)
PSRR
OUT (RMS)
OUT
V
OUT
V
V
T
V
I
OUT
OUT
OUT
I
JSD
DO
Q
L
(I
(V
OUT
IN
1.25V
)
Bias
V
) 10mA < I
REF
Integrated Products Division
IN
5mA < I
4.5V < V
V
Note 2
V
Note 2
V
Note 1
I
I
f=120Hz, V
10Hz < f < 10kHz
I
I
OUT
OUT
LOAD
LOAD
IN
IN
IN
= 5V, I
B L O C K D I A G R A M
Figure 1 – Fixed Output
step 0V to 5V; t
= 5V; t
< 5.5V
=5mA
=1000mA, V
Microsemi
= 1A, ∆V
= 1A, V
®
OUT
IN
OUT
OUT
r
< 5.5V, 5mA < I
< 1A, 4.75V < V
≥ 1µs; 10mA < I
IN
+
-
< 1A, V
IN
= 10mA, C
= 5V
OUT
= 4.0V
Test Conditions
IN
= -1%
r
3.3V/1.0A Ultra Low Dropout Regulator
< 7V
IN
≥ 1µs; 10mA < I
= 4.75V
1
= 4.7µF (ceramic), C
OUT
IN
LX8820
OUT
< 5.25V
< 1A
< 1A
P
RODUCTION DATA SHEET
OUT
< 1A
2
= 4.7µF (ceramic), & T
V
OUT
3.234
≤
Min
140
C2
10µF
3.0
3.0
1.0
50
T
A
≤
LX8820-33
125°C except where
3.300
0.003
Typ
0.45
205
550
160
3.3
1.5
75
4
2
0
J
= T
3.366
3.383
Max
3.63
300
650
0.1
15
LX8820
9
A
using low
Units
%/V
mV
mV
mA
Page 3
µA
dB
°C
V
V
V
V
A