SPX5205_04 Datasheet, PDF (1/8 Pages) Sipex Corporation – 150mA, Low-Noise LDO Voltage Regulator

®
SPX5205
150mA, Low-Noise LDO Voltage Regulator
FEATURES
■ Low Noise Output LDO: 40µV_RMS 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
2
3
VIN
GND
EN
Adjustable Output Voltage
VOUT
5
ADJ/BYP
4
SPX5205
5 Pin SOT-23
APPLICATIONS
■ PDA
■ Battery Powered Systems
■ Cellular Phone
■ Cordless Telephones
■ Radio Control Systems
■ Laptop, Palmtop, and Notebook Computers
1
2
3
VIN
GND
EN
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). V_OUT 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.
TYPICAL APPLICATION CIRCUIT
V_IN
1
5
V_OUT
+ ^GND
2
SPX5205
3
EN
4 _BYP
(Optn)
ENABLE may be tied directly to V_IN
TOP View
+ _1.0µF
Date:12/18/04
SPX5205 150mA, Low Noise LDO Voltage Regulator
1
© Copyright 2004 Sipex Corporation