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PDF SPX5205 Data sheet ( Hoja de datos )
| Número de pieza | SPX5205 | |
| Descripción | LOW-NOISE LDO VOLTAGE REGULATOR | |
| Fabricantes | Exar Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SPX5205 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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JULY 30, 2008
150mA, LOW-NOISE LDO VOLTAGE REGULATOR
SPX5205
REV. H
FEATURES
■ Low Noise Output LDO: 40μVRMS Possible
■ 1% Initial Accuracy
■ Very Low Quiecent Current: 70μA
■ Low Dropout Voltage (210mV at 150mA)
■ Current and Thermal Limiting
■ Reverse-Battery Protection
■ Wide Range of Fix Output Voltages:1.2V, 1.5V,
1.8V, 2.0V, 2.5V, 2.8V, 3.0V, 3.3V and 5.0V
■ Zero Off-Mode Current
■ Small 5-Pin SOT-23
■ Pin Compatible to MIC5205/MAX8877
(fixed Options Only) and AS3815
Fixed Output Voltage
VOUT
5
BYP
4
SPX5205
5 Pin SOT-23
1 23
VIN GND EN
Adjustable Output Voltage
VOUT
5
ADJ/BYP
4
SPX5205
5 Pin SOT-23
1 23
VIN GND EN
APPLICATIONS
■ PDA
■ Battery Powered Systems
■ Cellular Phone
■ Cordless Telephones
■ Radio Control Systems
■ Laptop, Palmtop, and Notebook Computers
Now Available in Lead Free Packaging
■ Portable Consumer Equipment
■ Portable Instrumentation
■ Bar Code Scanners
■ SMPS Post-Regulator
DESCRIPTION
The SPX5205 is a positive voltage regulator with very low dropout voltage, output noise and ground current
(750μA at 100mA). VOUT has a tolerance of less than 1% and is temperature compensated. Fixed output
voltages 1.2V, 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V, 3.3V, and 5.0V and an adjustable version are available
in a small 5-pin SOT-23 package. Other key features include zero off-mode current, reverse battery
protection, thermal shutdown and current limit. The SPX5205 is an excellent choice for use in battery-
powered applications, and where power conservation is desired such as: cellular/ cordless telephones, radio
control systems, and portable computers.
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TYPICAL APPLICATION CIRCUIT
VIN 1 5
VOUT
+ GND
2
SPX5205
3
EN
4 BYP
(Optn)
ENABLE may be tied directly to VIN
TOP View
+ 1.0μF
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com
1 page  
REV. H
150mA, Low-Noise LDO Voltage Regulator
SPX5205
TYPICAL PERFORMANCE CHARACTERISTICS
2.30
2.20
2.10
2.00
VOUT= 3.3V
VIN= 4.3V
CL= 1.0μF
IL = 150mA
1.90
1.80
1.70
1.60
1.50
1.40
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
Ground Current in Dropout vs Temperature
3.400
3.380
3.360
3.340
3.320
3.300
3.280
3.260
3.240
3.220
3.200
-40 -20
VOUT= 3.3V
VIN= 4.3V
CL= 1.0μF
0 20 40 60 80 100 120
Temperature (°C)
Output Voltage vs Temperature
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1.60
1.50
1.40
VOUT =3.3V
CL= 1.0μA
IL = 100μA
1.30
1.20
1.10
1.00
0.90
0.80
4 6 8 10 12 14 16
VIN (V)
ENABLE Voltage, ON threshold vs Input Voltage
350
300
250
200
150
100
50
0
1
Cin = 1uFT,
Cout = 1uFT
Cin = 1uFT,
Cout = 2.2uFT
Cin = 1uFT
Cout = 10uFT
10 100 1000 10000 100000 1000000
Bypass Cap (pF)
Output Noise vs. Bypass Capacitor Value
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet SPX5205.PDF ] | |
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