SPX2954AS-L-5-0 [EXAR]
Regulator, 1 Output, BIPolar, PDSO8,;型号: | SPX2954AS-L-5-0 |
厂家: | EXAR CORPORATION |
描述: | Regulator, 1 Output, BIPolar, PDSO8, 光电二极管 |
文件: | 总15页 (文件大小:577K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SPX2954
250mA Low Dropout Voltage Regulator
Description
FEATURES
The SPX2954 and SPX2954A are low power voltage regulators.
These devices are an excellent choice for use in battery-powered
applications such as cordless telephones, radio control systems,
and portable computers. The SPX2954 and SPX2954A feature low
quiescent current and low dropout voltage (typ. 20mV at 100µA and
310mV at 250mA). This includes a tight initial tolerance (0.5% for
SPX2954A), extremely good load and line regulation (0.05% typ.),
and very low output temperature coefficient (20 ppm/°C typ.), making
the SPX2954/SPX2954A useful as a low-power voltage reference.
ꢀ■
ꢀ■
ꢀ■
ꢀ■
ꢀ■
ꢀ■
ꢀ■
ꢀ■
ꢀ■
ꢀ■
ꢀ■
ꢀ■
5.0V and 3.3V versions at 250mA output
Accurate 0.5% for SPX2954A
Very low quiescent current
Low dropout: 310mV at 250mA
Extremely tight load and line regulation
Very low temperature coefficient
Current and thermal limiting
Need only 1µF for stability
Direct replacement for LP2954
Error flag warns of output dropout
Logic-controlled electronic shutdown
Programmable output from 1.24V to 30V
The error flag output feature is used as a power-on reset for warning
of a low output voltage, due to a falling input voltage. The logic-
compatible shutdown feature enables the regulator to be switched
ON and OFF. The SPX2954/SPX2954A is offered in a 3-pin SOT-223
package and an 8-pin SOIC package.
Typical Application
VIN
100K
8
VIN
ERROR
5
1.2 to 30V
ERROR
1
OUTPUT
VOUT
SPX2954
+
SHUTDOWN
INPUT
3
R1
3.3μF
SD
.01μF
FB
GND
7
4
1.23V
VREF
R2
Typical Application
REV1A
1/15
SPX2954
Absolute Maximum Ratings
Stresses beyond the limits listed below may cause
permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect
device reliability and lifetime.
Feedback Input Voltage................................... -1.5V to 30V
Shutdown Input Voltage .................................. -0.3V to 30V
Error Comparator Voltage ............................... -0.3V to 30V
ESD Rating............................................................. 2kV Min
Power Dissipation..................................... Internally Limited
Lead Temperature (soldering, 5 seconds)................. 260°C
Storage Temperature .................................. -65°C to 150°C
Operating Junction Temperature Range ..... -40°C to 125°C
Input Supply Voltage ....................................... -0.3V to 30V
REV1A
2/15
SPX2954
Electrical Characteristics
Unless otherwise noted: V = V + 1V, I = 100µA, C = 1µF(2) T = 25°C.
IN
O
L
L
A
SPX2954A
Typ
SPX2954
Typ
Parameter
Conditions
Units
Max
Min
Max
Min
3.3V Versions
T = 25°C
3.284
3.267
3.260
3.251
3.3
3.3
3.3
3.3
3.317
3.333
3.340
3.350
3.267
3.251
3.234
3.201
3.3
3.3
3.3
3.3
3.333
J
Output Voltage
-25°C ≤ T ≤ 85°C
3.350
3.366
3.399
V
V
J
Full Operating Temp.
Output Voltage
5V Versions
100µA ≤ I ≤ 250mA; T ≤ T
L J MAX
T = 25°C
4.975
4.950
4.940
4.925
5.0
5.0
5.0
5.0
5.025
5.050
5.060
5.075
4.950
4.925
4.900
4.850
5.0
5.0
5.0
5.0
5.050
5.075
5.100
5.150
J
Output Voltage
-25°C ≤ T ≤ 85°C
V
V
J
Full Operating Temp.
Output Voltage
100µA ≤ I ≤ 250mA; T ≤ T
L J MAX
All Voltage Options
Output Voltage Temperature
Coefficient(1)
20
100
50
150
ppm/°C
Line Regulation(3)
Load Regulation(3)
V
+ 1V ≤ V ≤ 30V; I(4)
0.03
0.04
60
0.10
0.20
100
450
500
170
6
0.04
0.10
60
0.20
0.30
100
450
500
170
6
%
%
O
IN
100µA ≤ I ≤ 250mA
L
I = 1mA
L
Dropout Voltage(5)
I = 100mA
L
290
310
150
3
290
310
150
3
mV
I = 250mA
L
I = 1mA
L
µA
Ground Current
Current Limit
I = 100mA
L
mA
I = 250mA
L
10
14
10
14
V
OUT
= 0
270
0.05
430
160
550
0.2
270
0.05
430
160
550
0.2
mA
%/W
C = 1µF
µV
L
rms
rms
Thermal Regulation Output Noise,
10Hz to 100kHz
C = 200µF
µV
L
C = 3.3µF, Bypass = 0.01µF from pin 7
to Pin 1 (8 pin versions)
L
100
100
µV
rms
8-Pin Version Only
Reference Voltage
1.220 1.235 1.250
1.210
1.185
1.235
1.260
1.285
60
V
Over Temp(6)
1.190
2.270
60
V
nA
Feedback Pin Bias Current
Vref Temperature Coefficient
40
20
40
50
ppm/°C
Feedback I
Coefficient
Temperature
BIAS
0.1
0.1
nA/°C
REV1A
3/15
SPX2954
SPX2954A
Typ
SPX2954
Typ
Parameter
Conditions
Units
Max
Min
40
Max
Min
40
Error Comparator
Output Leakage Current
Output Low Voltage
Upper Threshold Voltage(7)
Lower Threshold Voltage(7)
Hystersis(7)
V
V
= 30V
0.01
150
60
1
0.01
150
60
1
µA
mA
mA
mV
mV
OH
= V - 0.5V; I = 400µA
250
250
IN
O
OL
75
95
75
95
15
15
Shutdown
Low (Regulator ON)
High (Regulator OFF)
1.3
0.7
1.3
0.7
Input Logic Voltage
V
2.0
2.0
V
V
= 2.4V
= 30V
30
50
30
50
S
S
Shutdown Input Current
µA
µA
400
800
400
800
Regulator Output Current in
Shutdown(8)
3
10
3
10
Thermal Resistance Ѳ
JA
SOIC-8
128.4
62.3
°C/W
°C/W
SOT-223
NOTES:
1. Output or reference voltage temperature coefficients defined as the worst case voltage change divided by the total temperature range.
2. Unless otherwise specified all limits guaranteed for TJ = 25°C, VIN = 6V, IL = 100µA and CL = 1µF. Additional conditions for the 8-pin versions are feedback tied to 5V tap
and output tied to output sense (VOUT = 5V) and VSHUTDOWN ≤ 0.8V.
3. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the
specification for thermal regulation.
4. Line regulation for the SPX2954 is tested at IL = 1mA.
5. Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential. At very low
values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be taken into account.
6. VREF ≤ VOUT ≤ (VIN - 1V), 2.3 ≤ VIN ≤ 30V, 100µA ≤ IL ≤ 250mA, TJ ≤ TJMAX
.
7. Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the nominal reference voltage measured at 6V input. To express
these thresholds in terms of output voltage change, multiply by the error amplifier gain = VOUT/VREF = (R1 + R2)/R2. For example, at a programmed output voltage of 5V,
the error output is guaranteed to go low when the output drops by 95mV x 5V/1.235 = 384mV. Thresholds remain constant as a percent of VOUT as VOUT is varied, with the
dropout warning occurring at typically 5% below nominal, 7.5% guaranteed.
8. VSHUTDOWN ≥ 2V, VIN ≤ 30V, VOUT = 0, Feedback pin tied to 5V/3.3V Tap.
Pin Configurations
INPUT
OUTPUT
SENSE
1
2
3
4
8
7
6
5
SPX2954
FEEDBACK
5V, 3.3V TA P
ERROR
SPX2954
1
2
3
SHUTDOWN
GND
GND
V
V
IN
OUT
Front View
Top View
SOT-223 Package (M3)
8-Pin Surface Mount (S)
REV1A
4/15
SPX2954
Functional Block Diagram
UNREGULATED DC
5V
1
7
8
+
INPUT
FEEDBACK
OUTPUT
2
SENSE
+
_
180kΩ
60kΩ
6
ERROR
AMPLIFIER
3
330kΩ
5V TAP
FROM
CMOS OR
TTL
SHUTDOWN
+
60 mV
1μ F
.
5
+
+
_
ERROR
.
ERROR DETECTION
COMPARATOR
TO
1.23V
+
CMOS OR
TTL
4
REFERENCE
GROUND
SPX2954 Block Diagram, 8-Lead 5V Version
Typical Performance Characteristics
1.8
1.6
5
4
3.5
3.0
IL = 100mA
CL = 1µF
2.5
2.0
1.5
1.0
2
1.4
1.2
CL = 220µF
0
C
L = 3.3µF
CBYP = 0.1µF
-2
1
~
~
~
1.0
0.8
1.25W
0.5
0.0
0
0.6
-1
-75 -50 -25
0
25 50 75 100 125 150
102
103
104
105
0
10
20
30
40
50
TIME (µs)
FREQUENCY (Hz), CBYP=0.1uF
TEMPERATURE (˚C)
Shutdown Threshold Voltage
Thermal Response
Output Noise
30
25
20
15
80
70
60
50
40
30
20
10
IL = 50mA
L = 100mA
I
L = 100µA
TJ = 150 ºC
10
5
I
IL = 1mA
0
~
~
C
L = 1μF
VIN = 6V
OUT = 5V
10
5
V
TJ = 125 ºC
IL = 100µA
0
-5
-10
5
10
15
20
25
30
101
102
103
104
105
106
INPUT VOLTAGE (V)
FREQUENCY (Hz)
Line Regulation
Ripple Rejection
REV1A
5/15
SPX2954
Typical Performance Characteristics (Continued)
10
6
250
225
200
5
4
RL=50kΩ
175
150
1
RL=50kΩ
3
2
125
RL=50kΩ
100
75
RL= ∞
0.1
50
25
0
1
0
0.01
0
1
2
3
4
5
6
7
8
9
10
0.1
1
10
100
0
1
2
3
4
5
6
INPUT VOLTAGE (VOLTS)
INPUT VOLTAGE (VOLTS)
LOAD CURRENT (mA)
Input Current
Quiescent Current
Dropout Characteristics
6
5
320
280
160
150
140
130
120
110
100
90
RL=50kΩ
OUT=5V
240
200
160
V
I L=1mA
I L=0
VIN=6V
IL=100mA
80
70
120
80
60
50
40
30
20
10
0
4
40
3
0
0
1
2
3
4
5
6
7
8
-75
-25
0
25 50 75 100 125 150
-50
0
1
2
3
4
5
6
7
8
9
10
INPUT VOLTAGE (VOLTS)
TEMPERATURE (ºC)
INPUT VOLTAGE (VOLTS)
Ground Current
Ground Current
Input Current
190
170
150
8
7
6
I L=100mA
5
4
VIN=6V
I L=100μA
3
2
1
130
0
-75 -50 -25
0
25 50 75 100 125 150
0
1
2
3
4
5
6
7
8
TEMPERATURE (ºC)
INPUT VOLTAGE
Ground Current
Quiescent Current
REV1A
6/15
SPX2954
Typical Performance Characteristics (Continued)
500
240
230
500
I L = 150m A
400
300
400
300
220
210
200
190
180
200
~
~
200
40
20
0
T J = 25ºC
100
0
I L = 100μ A
170
100μA
1mA
OUTPUT CURRENT
10mA
-75 -50 -25
0
25 50 75 100 125 150
100mA
-75 -50 -25
0
25 50 75 100 125 150
TEMPERATURE (ºC)
TEMPERATURE (ºC)
Drop-Out Voltage
Drop-Out Voltage
Short Circuit Current
8
6
4
2.5
100
mV
V
= 5V
OUT
T A = 125ºC
50
2.0
mV
0
1.5
1.0
T A = 25ºC
T A = -55ºC
C L = 1μ F
HYSTERESIS
-50
mV
I L = 1mA
V OUT = 5V
~
2
~
8V
0
0.5
0.0
6V
4V
PULLUP RESISTOR TO
SEPARATE 5V SUPPLY
-2
0
1
2
3
4
5
0
200
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
OUTPUT LOW VOLTAGE (V)
400
TIME(μs)
600
800
INPUT VOLTAGE (V)
Error Comparator Output
Comparator Sink Current
Line Transient Response
10
90
80
70
60
50
40
90
80
70
60
50
40
30
20
I O = 100μ A
I O = 1mA
5
2
C L = 1μ F
V IN = 6V
I L = 1mA
V OUT = 5V
I L = 0
I O = 100m A
1
0.5
0.2
V OUT = 5V
C L = 1μ F
0.1
0.05
I L = 100μ A
C L = 1μ F
V IN = 6V
30
V OUT = 5V
0.02
0.01
I L = 10m A
20
10
100
1K
10K
100K
1M
10 1
10 2
10 4
FREQUENCY (Hz)
10 5
10 3
10 6
10 1
10 2
10 3 10 4
FREQUENCY (Hz)
10 5
10 6
FREQUENCY (Hz)
Output Impedance
Ripple Rejection
Ripple Rejection
REV1A
7/15
SPX2954
Typical Performance Characteristics (Continued)
20
50
0
2.3
PIN 7 DRIVEN BY EXTERNAL
SOURCE (REGULATOR RUN
OPEN LOOP)
10
-50
2.1
0
TA=125ºC
-100
-150
-200
-250
-10
TA= 25ºC
1.9
TA= 55ºC
-20
-30
-75 -50 -25
1.7
-75 -50 -25
0
25 50 75 100 125 150
-2.0
-1.5 -1.0
-0.5
0
0.5
1.0
0
25 50 75 100 125 150
TEMPEATURE (ºC)
FEEDBACK VOLTA GE (V)
TEMPERATURE (ºC)
Minimum Operating Voltage
Feedback Bias Current
Feedback Pin Current
250
200
150
80
60
40
7
CL=1μF
6
5
4
100
50
20
0
3
2
1
0
0
-20
-40
-60
IL=10mA
VIN=8V
OUT=5V
CL=10μF
-50
-100
V
OUT=5V
CL=1μF
V
CL=10μF
V
OUT=5V
~
~
~
~
2
0
100mA
100μA
100μA
100μA
-2
0
1
2
3
4
5
-100
0
100 200 300 400 500 600 700
TIME (us)
0
4
8
12
16
20
TIME (ms)
Load Transient Response
Load Transient Response
Enable Transient
120
400
120
8-PIN MOLDED
DIP SOLDERED
TO PC BOARD
TO-92 PACKAGE
0.25” LEADS SOLDERED
TO PC BOARD
100
80
100
80
300
200
100
TJMAX=125˚C
TOUT=5V
VOUT=5V
TIMAX=125˚C
60
40
60
TA=25˚C
40
20
0
TA=25˚C
TA=50˚C
TA=85˚C
20
0
TA=85˚C
0
0
5
10
15
20
25
30
0
5
10
15
20
25
30
-75 -50 -25
0
25 50 75 100 125 150
INPUT VOLTAGE (V)
TEMPERATURE (ºC)
INPUT VOLTAGE (V)
Maximum Rated Output
Divider Resistance
Maximum Rated Output Current
REV1A
8/15
SPX2954
Applications Information
External Capacitors
The error comparator has an open-collector output, which
requires an external pull-up resistor. Depending on the
system requirements the resistor may be returned to 5V
output or other supply voltage. In determining the value of
this resistor, note that the output is rated to sink 400mA,
this value adds to battery drain in a low battery condition.
Suggested values range from 100k to 1MΩ. If the output is
unused this resistor is not required.
The stability of the SPX2954 requires a 1µF or greater
capacitor between output and ground. Oscillation could occur
without this capacitor. Most types of tantalum or aluminum
electrolytic works fine here. For operations below -25°C solid
tantalum is recommended since the many aluminum types
have electrolytes that freeze at about -30°C. The ESR of
about 5Ω or less and resonant frequency above 500kHz are
the most important parameters in the value of the capacitor.
The capacitors value may be increased without limit.
At lower values of output current, less output capacitance
is required for stability. For the currents below 10mA the
value of the capacitor can be reduced to 0.33µF and 0.1µF
for 1mA. More output capacitance is needed for the 8-pin
version at voltages below 5V since it runs the error amplifier
at lower gain. At worst case 3.3µF or greater must be used
for the condition of 150mA load at 1.23V output.
4.75V
OUTPUT
VOLTAGE
_______
ERROR*
The SPX2954 unlike other low dropout regulators will remain
stable and in regulation with no load in addition to the
internal voltage divider. This feature is especially important
in applications like CMOS RAM keep-alive. When setting
the output voltage of the SPX2954 version with external
resistors, a minimum load of 1µA is recommended.
+
5.0V
+
INPUT
VOLTAGE
+
1.3V
+
* See Application Info.
If there is more than 10 inches of wire between the input and
the AC filter capacitor or if a battery is used as the input then
a 1µF tantalum or aluminum electrolytic capacitor should be
placed from the input to the ground.
Figure 1. Error Output Timing
Instability can occur if there is stray capacitance to the
SPX2954 feedback terminal (pin 7). This could cause more
problems when using a higher value of external resistors
to set the output voltage. This problem can be fixed by
adding a 100pF capacitor between output and feedback and
increasing the output capacitor to at least 3.3µF.
Programming the Output Voltage of SPX2954
The SPX2954 may be pin-strapped for 5V using its internal
voltage divider by tying Pin 1 (output) to Pin 2 (sense) and Pin
7 (feedback) to Pin 6 (5V Tap). Also, it may be programmed
for any output voltage between its 1.235V reference and
its 30V maximum rating using an external pair of resistors.
Refer to the below equation for the programming of the
output voltage:
Error Detection Comparator Output
V
= V
x (1 + R /R ) + I
R
OUT
REF
1
2
FB 1
The comparator produces a logic low output whenever
the SPX2954 output falls out of regulation by more than
around 5%. This is around 60mV offset divided by the
1.235 reference voltage. This trip level remains 5% below
normal regardless of the programmed output voltage of the
regulator.
The V
is 1.235 and I
nominally -20nA. The minimum recommended load current
of 1µA forces an upper limit of 1.2MΩ on value of R . If no
is the feedback bias current,
FB
REF
2
load is presented the I produces an error of typically 2%
FB
in V
which may be eliminated at room temperature by
Figure 1 shows the timing diagram depicting the ERROR
signal and the regulator output voltage as the SPX2954
input is ramped up and down. The ERROR signal becomes
low at around 1.3V input, and goes high around 5V input
OUT
trimming R . To improve the accuracy choose the value of
1
R2 = 100k this reduces the error by 0.17% and increases
the resistor program current by 12µA. Since the SPX2954
typically draws 60µA at no load with Pin 2 open-circuited,
this is a small price to pay.
(input voltage at which V
= 4.75). Since the SPX2954’s
OUT
dropout voltage is load dependent, the input voltage trip
point (around 5V) will vary with the load current. The output
voltage trip point (approx. 4.75V) does not vary with load.
REV1A
9/15
SPX2954
Reducing Output Noise
It may be an advantage to reduce the AC noise present at
the output. One way is to reduce the regulator bandwidth by
increasing the size of the output capacitor. This is the only
way that noise can be reduced on the 3 lead SPX2954 but is
relatively inefficient, as increasing the capacitor from 1µF to
220µF only decreases the noise from 430µV to 160µVRMS
for a 100kHz bandwidth at 5V output. Noise can be reduced
+VIN
8
+VIN
______
ERROR
5
ERROR
*VOUT =VIN
1
OUTPUT
VOUT
fourfold by using a bypass capacitor across R , since it
1
reduces the high frequency gain from 4 to unity. Pick
SPX2954
C
≈ (1 / 2πR x 200Hz)
1
BYPASS
3
SHUTDOWN
INPUT
SD
FB
GND
7
4
or choose 0.01µF. When doing this, the output capacitor must
be increased to 3.3µF to maintain stability. These changes
reduce the output noise from 430µV to 100µVRMS for a
100kHz bandwidth at 5V output. With the bypass capacitor
added, noise no longer scales with output voltage so that
improvements are more dramatic at higher output voltages.
*MINIMUM INPUT-OUTPUT VOLTAGE RANGES FROM 40mV to 400mV.
DEPENDING ON LOAD CURRENT.
Figure 3. Wide Input Voltage Range, Current Limiter
+V
IN
470KΩ
8
+VIN
_____
ERROR
5
V OUT
1
470KΩ
VOUT
SPX2954
+
3
R1
1μF
SD
FB
GND
4
RESET
7
R 2
Figure 2. Latch Off when Error Flag Occurs
REV1A
10/15
SPX2954
Applications Information (continued)
+
6V
SEALED
LEAD-ACID
BATTERY
SOURCE
1.5kΩ
120kΩ
FB
8
1N457
VIN
1
2
MAIN V+
SPX385
VOUT
SPX2954
MEMORY V+
20kΩ
400kΩ
FOR 5.5 V
+
3
1μF
SD
100kΩ
GND
4
NI-CAD
BACKUP
BATTERY
Figure 4. Low Battery Disconnect
Figure 5. Regulator with State of Charge Indicator
REV1A
11/15
SPX2954
Applications Information (continued)
+VIN
8
10KΩ
5 DEGREE SHUTDOWN FLAG
.
VIN
5
1
3
AUX SHUTDOWN
INPUT
SD
ERROR
OFF
SPX2954
ON
VOUT
FB
GND
EXTERNAL CIRCUIT
4
PROTECTED FROM
OVER TEMPERATURE
(V+ GOES OFF WHEN
TEMP > 125)
7
OR
+
TEMP
SENSOR
AS35
RELAY
-
8.2KΩ
Figure 6. System Over Temperature Protection
+5V
UNREGULATED INPUT
4.7mA
4
20m A
8
8
OUTPUT
330kΩ
IN
2N5432
(2)
1
VIN
VOUT
1
VOUT
FB
27kΩ
1N4001
SPX2954
SPX2954
7
5V
6
2
0.1μ F
2
SENSE
V TA P
OUTPUT
FB
GND
+
GND
4
4
4.7μ F
7
LOAD
50mA
to
360KΩ
1N457
300mA
MIN VOLTAGE = 4V
Figure 7. Open Circuit Detector for 4mA to 20mA Current
Loop
Figure 8. 300mA Regulator with 0.75V
REV1A
12/15
SPX2954
Package Description
SOT-223-3
FRONT VIEW
TOP VIEW
BOTTOM VIEW
TERMINAL DETAILS
TYPICAL RECOMMENDED LAND PATTERN
Drawing No. : POD-00000098
Revision: B
REV1A
13/15
SPX2954
Package Description (Continued)
SOIC-8
Top View
Side View
Front View
Drawing No:
POD-00000108
Revision:
A
REV1A
14/15
SPX2954
Ordering Information(1)
Operating Temperature
Packaging
Method
Output Voltage
(V)
Part Number
Lead-Free
Yes(2)
Package
Accuracy
Range
SPX2954AM3-L-5-0/TR
SPX2954M3-L-3-3/TR
SPX2954M3-L-5-0/TR
SPX2954M3-L-3-3(3)
Reel
Reel
Reel
Tube
Reel
0.5%
1%
5.0
3.3
5.0
3.3
5.0
SOT-223-3
SOIC-8
-40°C ≤ T ≤ 125°C
1%
J
1%
SPX2954AS-L-5-0/TR(3)
0.5%
NOTE:
1. Refer to www.exar.com/SPX2954 for most up-to-date Ordering Information.
2. Visit www.exar.com for additional information on Environmental Rating.
3. NRND - Not Recommended for New Design.
4. TO-220, TO-92, and TO-263 package options no longer available.
Revision History
Revision
1A
Date
Description
Updated to Maxlinear logo. Updated format and ordering information table. Pin configurations
moved to page 4. Removed information related to packages no longer available.
July 2017
Corporate Headquarters:
5966 La Place Court
Suite 100
Carlsbad, CA 92008
Tel.:+1 (760) 692-0711
Fax: +1 (760) 444-8598
www.maxlinear.com
High Performance Analog:
48720 Kato Road
Fremont, CA 94538
Tel.: +1 (510) 668-7000
Fax: +1 (510) 668-7001
Email: powertechsupport@exar.com
www.exar.com
The content of this document is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by MaxLinear, Inc.. MaxLinear, Inc. assumes
no responsibility or liability for any errors or inaccuracies that may appear in the informational content contained in this guide. Complying with all applicable copyright laws is the responsibility of the
user. Without limiting the rights under copyright, no part of this document may be reproduced into, stored in, or introduced into a retrieval system, or transmitted in any form or by any means (electronic,
mechanical, photocopying, recording, or otherwise), or for any purpose, without the express written permission of MaxLinear, Inc.
Maxlinear, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support
system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless MaxLinear, Inc. receives, in writing, assurances to its satisfaction that: (a) the
risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of MaxLinear, Inc. is adequately protected under the circumstances.
MaxLinear, Inc. may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document. Except as expressly provided in any written
license agreement from MaxLinear, Inc., the furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property.
Company and product names may be registered trademarks or trademarks of the respective owners with which they are associated.
© 2017 MaxLinear, Inc. All rights reserved
REV1A
SPX2954_DS_072017
15/15
相关型号:
SPX2954AS-L-5-0/TR
Fixed/Adjustable Positive LDO Regulator, 1.24V Min, 30V Max, 0.5V Dropout, PDSO8, PLASTIC, SOIC-8
SIPEX
SPX2954AS-L-5.0
Fixed/Adjustable Positive LDO Regulator, 1.24V Min, 30V Max, 0.5V Dropout, PDSO8, PLASTIC, SOIC-8
SIPEX
©2020 ICPDF网 联系我们和版权申明