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PDF FSP2133 Data sheet ( Hoja de datos )

Número de pieza FSP2133
Descripción 300MA ADJUSTABLE HIGH PSRR CMOS LINEAR REGULATOR
Fabricantes FOSLINK SEMICONDUCTOR 
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No Preview Available ! FSP2133 Hoja de datos, Descripción, Manual

300MA ADJUSTABLE HIGH PSRR CMOS LINEAR REGULATOR
„ FEATURES
z Low dropout voltage: 180mV at 300mA (Vo=3.3V)
z Quiescent current: Typ. 65µA
z ±2% Voltage Accuracy
z High PSRR: 67dB at 100Hz
z Thermal Shutdown
z Current Limiting
z Excellent line and load regulation
z Fast response
z Short circuit protection
z Low temperature coefficient
z Shutdown current: 0.5µA
z Space saving SOT23-5L package
„ APPLICATIONS
z Cordless phones
z Cellular phones
z Bluetooth earphones
z Digital Cameras
z Portable electronics
z WLANs
z MP3 players
FSP2133
„ GENERAL DESCRIPTION
The FSP2133 is a positive adjustable voltage linear
regulator features low quiescent current (Typ. 65µA)
and low dropout voltage, making it ideal for battery
powered applications. Their high PSRR make them
useful in applications where AC noise on the input
power supply must be suppressed. Space saving
SOT23-5L package is attractive for portable and
handheld applications. They have both thermal
shutdown and a current limit feature to prevent device
failure from extreme operating conditions. They are
stable with an output capacitor of 2.2µF or greater.
„ PIN CONFIGURATION
(Top View)
„ PIN DESCRIPTION
www.DataSheet4U.com
Pin Number
1
2
3
4
5
„ BLOCK DIAGRAM
Pin Name
VIN
GND
EN
ADJ
VOUT
15
2
34
Pin Function
Input
Ground
Chip Enable (active high)
Adjustable pin
Output
1/8 2007-4-19

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FSP2133 pdf
300MA ADJUSTABLE HIGH PSRR CMOS LINEAR REGULATOR
FSP2133
example let the input voltage VIN=3.3V, the output current IO=300mA and the case temperature TA=40measured
by a thermal couple during operation. The power dissipation for the VO=2.8V version of the FSP2133 can be
calculated as:
PD=(3.3V-2.8V)*300mA+3.3V*70μA150mW
And the junction temperature, TJ, can be calculated as follows:
TJ=TA+PD*θJA
TJ=40+0.15W*250/W
=77.5TJ(MAX) =125
For this operating condition, TJ, is lower than the absolute maximum operating junction temperature, 125, so it is
safe to use the FSP2133 in this configuration.
„ TYPICAL PERFORMANCE CHARACTERISTICS
(V0 = 1.2V, CIN = 1µF, CO = 2.2µF , TA = 25°C unless otherwise specified.)
www.DataSheet4U.com
5/8 2007-4-19

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