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LX8211-25ISE

P1-P3P4-P6P7-P9
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright © 2000
Rev. 1.0d, 2007-08-29
WWW.Microsemi .COM
LX8211
150mA CMOS Low Dropout Re
g
ulator
P
RODUCTION
D
ATA
S
HEET
TM
®
DESCRIPTION
The LX8211 fixed/adjustable voltage
linear regulators combines low dropout,
high accuracy, ultra-low ground current
and fast response in a very small
footprint.
Using the Enable pin the regulators is
switched on with TTL logic levels,
which is especially useful for battery-
operated equipment. Other features
include independent Thermal and Short
Circuit Current protection. The regulator
is stable with a low value ceramic output
capacitors.
For ultra low noise operation a Bypass
pin is brought out to connect an optional
capacitor. Significant performance
improvements over Bipolar technology
are achieved designing in CMOS:
increased regulator efficiency by
minimizing operating ground current
(typ<140uA) and it is nearly eliminated
(typ<1uA) in shutdown. The PMOS
output transistor allows for ultra low
dropout typically less than 300mV at
100mA.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PRODUCT HIGHLIGHT
C
IN
1µF
470pF
Optional
C
OUT
1µF
ON
OFF
V
IN
ENABLE
C
BY/ADJUST
V
OUT
GND
+
¯
KEY FEATURES
Dropout Voltage typically
175mV @ 100mA
Ultra low shutdown Current
typically less than 1uA
High Output accuracy trimmed
to 0.25%
Standard pinout in SOT-23-5
Noise Bypass feature available
Current and Over Temperature
protection
Stable with low cost ceramic
output capacitor
APPLICATIONS
Battery Operated Systems
Laptop, Notebook and PDA’s
Cellular Telephones/pagers
Hand-Held Instruments
Linear post regulators for
SMPS
PACKAGE ORDER INFO
SE
Plastic SOT-23
5-PIN
T
J
(°C)
O
UTPUT VOLTAGE
RoHS Compliant / Pb-free
Transition DC: 0503
PACKAGE MARKING
-40 to 125 Adjustable
LX8211-00ISE
82A1
-40 to 125 2.5V
LX8211-25ISE
82B1
-40 to 125 2.7V
LX8211-27ISE
82D1
-40 to 125 2.8V
LX8211-28ISE
82E1
-40 to 125 3.0V
LX8211-30ISE
82G1
-40 to 125 3.3V
LX8211-33ISE
82K1
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8211-25ISE-TR)
L
L
X
X
8
8
2
2
1
1
1
1
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
Copyright © 2000
Rev. 1.0d, 2007-08-29
WWW.Microsemi .COM
LX8211
150mA CMOS Low Dropout Re
g
ulator
P
RODUCTION
D
ATA
S
HEET
TM
®
ABSOLUTE MAXIMUM RATINGS
Input Voltage (V
IN
) ........................................................................................ -0.3V to +7V
Enable Input ........................................................................................... -0.3V to V
IN
+.3V
Output Current (I
OUT
)............................................................................................. 150mA
Operating Temperature Range .....................................................................-40 to +125 °C
Maximum Junction Temperature (T
J
) ...................................................................... 150 °C
RoHS Compliant / Pb-free Peak Package Solder
Reflow Temperature (40 second max. exposure).........................................260°C (+0, -5)
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal.
PACKAGE PIN OUT
1
2
3
5
4
SE PACKAGE
(Top View)
RoHS / Pb-free 100% Matte Tin Pin Finish
THERMAL DATA
SE
5-PIN SOT-23 PACKAGE
Thermal Resistance – Junction to Ambient, θ
JA
Two – Layer Board
220°C/W
Four – Layer Board
220°C/W
Junction Temperature Calculation: T
J
= T
A
+ (P
D
x θ
JA
).
The θ
JA
numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
FUNCTIONAL PIN DESCRIPTION
PIN NAME
PIN
NUMBER
D
ESCRIPTION
VIN 1 Unregulated input supply voltage
GND 2 Ground Pin
ENABLE 3 Enable Control Input, Enable High
CBY/ADJUST 4
Reference bypass input. Adding an additional external capacitor reduces output noise . Or
adjust control input for LX8211-00.
VOUT 5 Regulated output voltage. Regulator stability is achieved with external capacitor of 1uF
APPLICATION
C
IN
R1
R2
C
OUT
V
IN
V
OUT
C
BY/ADJUST
ENABLE
GND
ON
OFF
1
5
4
2
3
+
¯
⎟
⎠
⎞
⎜
⎝
⎛
+=
2R
1R
1V
OUT
ADJ
V
Figure 1 – Output Voltage Set Externally
P
P
A
A
C
C
K
K
A
A
G
G
E
E
D
D
A
A
T
T
A
A
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
Copyright © 2000
Rev. 1.0d, 2007-08-29
WWW.Microsemi .COM
LX8211
150mA CMOS Low Dropout Re
g
ulator
P
RODUCTION
D
ATA
S
HEET
TM
®
RECOMMENDED OPERATING CONDITIONS
LX8211-xx
Parameter Symbol
Min Typ Max
Units
Input Operating Voltage Range (Note 1)
V
IN
2.5 6 V
Enable Input Voltage Range
ENABLE 0 V
IN
+ .3V
Continuous Output Current Range I
OUT
.1
150
mA
Input Capacitor (V
IN
to GND) C
IN
1.0 1.0* µF
Output Capacitor (V
OUT
to GND) C
OUT
1.0 2.2* µF
Note 1: The minimum V
IN
has to meet two conditions V
IN
>2.5V and V
IN
>V
OUT
+V
DROPOUT
.
* Size your output capacitor to meet the transient loading requirement. If you have a very dynamic load, a lower ESR and larger value capacitor will
improve the response to these load steps.
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the operating ambient temperature -40°C ≤ T
A
≤ 125°C except where
otherwise noted. Test conditions: V
IN
= V
OUT
+ 0.5V; I
OUT
=10mA; C
IN
= 1uF; C
OUT
= 1uF; T
J
=T
A
using low duty cycle pulse testing
methods.
LX8211-XX
Parameter Symbol Test Conditions
Min Typ Max
Units
T
J
= 25°C -1 1 %V
NOM
Output Voltage (-25, -27, -28, -30, -33) V
O
I
OUT
= 0mA to 150mA, V
IN
= V
OUT
+ .5V to 6V -2.5 2.5 %V
NOM
T
J
= 25°C 1.163 1.187
Adjust Reference Voltage (-00) V
ADJ
I
OUT
= 0mA to 150mA, V
IN
= 2.85V to 6V 1.14
1.175
1.20
V
Line Regulation
⎟
⎠
⎞
⎜
⎝
⎛
Δ
Δ
IN
O
V
V
V
RV
V
IN
: V
OUT
+ 0.5 TO 6 VOLTS, I
OUT
=0.1mA 0.04 0.15 %/V
T
J
= 25°C, I
OUT
: 0.5 TO 150mA 0.5 1.0 %V
NOM
Load Regulation
⎟
⎠
⎞
⎜
⎝
⎛
Δ
Δ
O
O
I
V
V
RI
I
OUT
: 0.5 TO 150mA 1.5 %V
NOM
I
LOAD
= 1mA, Δ
VO
= -1%
0.05 V
I
LOAD
= 50mA, Δ
VO
= -1%
0.1 0.175 V
I
LOAD
= 100mA, Δ
VO
= -1%
0.175 0.3 V
Dropout Voltage
()
OIN
VV −
(Note2)
V
DO
I
LOAD
= 150mA, Δ
VO
= -1%
0.25 0.4 V
I
GND
Enable = Hi 140 220 µA
Ground Pin Current
I
STBY
Enable = Low 1 µA
Adjust Input Bias Current I
ADJ
V
ADJ
= 1.175V 100 nA
Enable Pin Current I
EN
V
EN
= V
IN
100 nA
V
IH
2.0 V
Enable Threshold
V
IL
0.4 V
Short Circuit Current Limit IOUT
SC
V
OUT
= 0V 400 mA
Power Supply Rejection Ratio PSRR T
J
= 25°C, f = 120Hz 50 dB
Output Noise e
N
T
J
= 25°C, C
OUT
= 10uF,C
BYPASS
= 470 pF 50 µV
Thermal Shutdown Temperature T
SD
170 °C
Note 2: Dropout voltage is defined as the input to output differential at which the output voltage drops 1% below the nominal value.
E
E
L
L
E
E
C
C
T
T
R
R
I
I
C
C
A
A
L
L
S
S
P1-P3P4-P6P7-P9

LX8211-25ISE

Mfr. #:
Buy LX8211-25ISE
Manufacturer:
Microchip / Microsemi
Description:
IC REG LINEAR 2.5V 150MA SOT23-5
Lifecycle:
New from this manufacturer.
Delivery:
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