OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LX8415-33CST

P1-P3P4-P6P7-P7
P
RELIMINARY
D
ATA
S
HEET
T
HE
I
NFINITE
P
OWER OF
I
NNOVATION
M
ICROSEMI INC
.
11861
W
ESTERN
A
VENUE
,
G
ARDEN
G
ROVE
,
CA.
92841,
714-898-8121,
F
AX
:
714-893-2570
1
Copyright © 1999
Rev. 0.5,2005-06-16
LX8415-xx
0.5A
L
OW
D
ROPOUT
P
OSITIVE
R
EGULATORS
DESCRIPTION
The LX8415 series ICs are positive Low
Dropout (LDO) regulators. At the designed
maximum load current, the LX8415 series
dropout voltage is guaranteed to be 1.3V or
lower at 0.5A. The dropout voltage decreases
with load current.
The LX8415 is available in an adjustable
output voltage version and fixed output
versions of 2.5V and 3.3V. On chip trimming
of the internal voltage reference allows
specification of the initial output voltage to
within ±1% of its nominal value. The output
current limit point is also trimmed, which
helps
to minimize stress on both the regulator and
the system power source when they are
operated under short-circuit conditions. The
regulator's internal circuitry will operate at
input-to-output differential voltages down to
1V.
Most regulator circuit designs include
output capacitors with values in the range of
tens to hundreds of microfarads or more. The
LX8415 typically requires at least 10µF of
output capacitance for stable operation.
The LX8415 is available in the low profile
plastic SOT-223 package for applications
where space is at a premium.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PRODUCT HIGHLIGHT
Low Cost 5V to 3.3V Regulator
LX8415-xx
V
IN
5V
10µF
IN
ADJ
OUT
V
OUT
3.3V
22µF
R
2
100
Ω
R
1
60.4
Ω
KEY FEATURES
0.7% Line Regulation Maximum
0.7% Load Regulation Maximum
Output Current Of 500mA
Regulates To <1.3V Dropout
Space Saving SOT-223 Surface
Mount Package
Guaranteed Dropout Voltage At
Multiple Current Levels
3-Terminal Adjustable, Fixed 2.5V
And Fixed 3.3V
KEY FEATURES
Battery Chargers
5V To 3.3V Linear Regulators
Post Regulators For Switching
Supplies
Modems
DVD Players
Available Options Per Part #
Part # Output Voltage
LX8415-25 2.5V
LX8415-33 3.3V
LX8415-00 Adjustable
PACKAGE ORDER INFO
ST
Plastic SOT-223
3-Pin
T
A
(°C)
RoHS Compliant / Pb-free
Transition DC: 0522
0 to 125
LX8415-xxCST
Note: Available in Tape & Reel. Append the letter “TR” to the
part number. (i.e. LX8415-25CST-TR)
0.5A LOW DROPOUT POSITIVE REGULATORS
LX8415-xx
PRODUCT DATABOOK 1996/1997
Copyright © 1999
Rev. 0.5
2
P
RELIMINARY DATA SHEET
ABSOLUTE MAXIMUM RATINGS (Note 1)
Power Dissipation .................................................................................. Internally Limited
Input Voltage
LX8415-00 (Adjustable) / 8415-33 (3.3V) .................................................................. 7V
Surge Voltage ................................................................................................................. 7V
Operating Junction Temperature
Plastic (ST, DD & DT Packages) .......................................................................... 150°C
Storage Temperature Range ...................................................................... -65°C to 150°C
Lead Temperature (Soldering, 10 seconds) ............................................................. 300°C
Short-Circuit Protection.......................................................................................Indefinite
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with
respect to Ground. Currents are positive into, negative out of the specified terminal.
PACKAGE PIN OUTS
3. IN
2. OUT
1. ADJ / GND
ST PACKAGE
(Top View)
THERMAL DATA
ST PACKAGE:
THERMAL RESISTANCE-JUNCTION TO TAB,
θθ
θθ
θ
JT
15°C/W
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθ
θθ
θ
JA
*150°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.
* θ
JA
can be improved with package soldered to 0.5IN
2
copper area over backside ground
plane or internal power plane. θ
JA
can vary from 20ºC/W to > 40ºC/W depending on
mounting technique. (See Application Notes Section: Thermal Considerations)
TAB IS V
OUT
BLOCK DIAGRAM
Thermal
Limit Circuit
Control
Circuit
Bandgap
Circuit
Output
Circuit
Bias
Circuit
V
OUT
V
IN
Current
Limit Circuit
ADJ
RoHS Peak Package Solder Reflow Temp. (40 seconds max. exposure)............................. 260°C (+0, -5)
RoHS / Pb-free 100% Matte Tin Lead Finish
0.5A LOW DROPOUT POSITIVE REGULATORS
LX8415-xx
PRODUCT DATABOOK 1996/1997
3
Copyright © 1999
Rev. 0.5
P RELIMINARY DATA SHEET
Input Voltage
Operating Voltage LX8415-xx
Operating Ambient Temperature Range
RECOMMENDED OPERATING CONDITIONS (Note 2)
Parameter
Symbol
Units
Recommended Operating Conditions
Min. Typ. Max.
7V
0 125 °C
Note 2. Range over which the device is functional.
1.238 1.250 1.262 V
1.225 1.250 1.275 V
2.475 2.500 2.525 V
2.450 2.500 2.550 V
3.267 3.300 3.333 V
3.235 3.300 3.365 V
0.05 0.7 %
17mV
0.15 0.5 %
10 20 mV
1.05 1.20 V
1.10 1.25 V
1.15 1.30 V
500 950 mA
0.5 10 mA
4.5 10 mA
0.08 0.2 %/W
60 75 dB
60 130 µA
0.2 5 µA
0.5 %
0.3 %
0.003 %
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified: 0°C ≤ T
J
≤ 125°C, I
MAX
= 0.5A for the LX8415-xx.)
Parameter
Symbol
Test Conditions Units
LX8415-xx
Min. Typ. Max.
Reference Voltage LX8415-00 V
REF
I
OUT
= 10mA, (V
IN
- V
OUT
) = 2V, T
J
= 25°C
10mA ≤ I
OUT
≤ I
MAX
, 1.5V ≤ (V
IN
- V
OUT
) ≤ 6V
Output Voltage LX8415-25 I
OUT
= 10mA, V
IN
= 5V, T
J
= 25°C
0mA ≤ I
OUT
≤ I
MAX
, 4.75V ≤ V
IN
≤ 6V
LX8415-33 I
OUT
= 10mA, V
IN
= 5V, T
J
= 25°C
0mA ≤ I
OUT
≤ I
MAX
, 4.75V ≤ V
IN
≤ 6V
Line Regulation LX8415-00 I
OUT
= 10mA, 1.5V ≤ V
IN
- V
OUT
≤ 6V
(Note 3) LX8415-25 / 33 I
OUT
= 0mA, 4.75V ≤ V
IN
≤ 6V
Load Regulation LX8415-00 (V
IN
- V
OUT
) = 3V, 10mA ≤ I
OUT
≤ I
MAX
(Note 3) LX8415-25 / 33 V
IN
= 4.75V, 0mA ≤ I
OUT
≤ I
MAX
Dropout Voltage LX8415-xx I
OUT
= 100mA
(Note 4) I
OUT
= 300mA
I
OUT
= I
MAX
Current Limit LX8415-xx I
OUT (MAX)
(V
IN
- V
OUT
) ≥ 1.3V, T
J
= 25°C
Minimum Load Current (Note 5) V
IN
≤ 6V, (LX8415-00)
Quiescent Current LX8415-25 / 33 V
IN
≤ 6V
Thermal Regulation T
A
= 25°C, 30ms Pulse
Ripple Rejection f
RIPPLE
= 120Hz, (V
IN
- V
OUT
) = 3V, V
RIPPLE
= 1Vp - p
Adjust Pin Current LX8415(A)-00
Adjust Pin Current Change
LX8415(A)-00 10mA ≤ I
OUT
≤ I
MAX
, 1.5V ≤ (V
IN
- V
OUT
) ≤ 6V
Temperature Stability
Long Term Stability T
A
= 125°C, 1000Hrs
RMS Output Noise (% of V
OUT
), 10Hz ≤ f ≤ 10kHz
Notes: 3. See thermal regulation specification for changes in output voltage due to heating effects. Load regulation and line regulation are measured at a constant junction
temperature by low duty cycle pulse testing.
4. Dropout voltage is specified over the full output current range of the device. Dropout voltage is defined as the minimum input/output differential measured at the
specified output current. Test points and limits are also shown on the Dropout Voltage Curve.
5. Minimum load current is defined as the minimum output current required to maintain regulation.
P1-P3P4-P6P7-P7

LX8415-33CST

Mfr. #:
Buy LX8415-33CST
Manufacturer:
Microchip / Microsemi
Description:
IC REG LIN 3.3V 500MA SOT223 PWR
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet