PDF LP2950 Data sheet ( Hoja de datos )

Número de pieza	LP2950
Descripción	LOW DROPOUT VOLTAGE REGULATORS
Fabricantes	Exar
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1. PDF - Adjustable Voltage Regulator Hay una vista previa y un enlace de descarga de LP2950 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas
No Preview Available ! OCTOBER 6, 2008 100mA, LOW DROPOUT VOLTAGE REGULATORS LP2950/LP2951 REV. G  •        •     •       •       •     •     •    µ   •   Lead Free, RoHS Compliant Packages:      •        •       •    •        •   •  •   •   •   •  • •  •  •  Now Available in Lead Free Packaging                                                                                                                                                           UNREGULATED DC + 7 FEEDBACK 8 INPUT OUTPUT FROM CMOS OR TTL SHUTDOWN + _ ERROR AMPLIFIER 80kΩ 0 mV + + 0kΩ _ ERROR DETECTION + .2V COMPARATOR REFERENCE 2 SENSE 5V TAP 5 ______ ERROR GROUND 5V @ 00mA MAX 0kΩ + µF . . TO CMOS OR TTL Rev G LP2950-51 Low Dropout Linear Regulator © 2008 Exar Corporation 1 page      600 IL= 100mA 500 400 300 ~ ~ 100 50 IL= 100 µA 0 -75 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (ºC) Drop-Out Voltage 500 400 300 200 TJ = 25ºC 100 0 100µA 1mA 10mA OUTPUT CURRENT Drop-Out Voltage 170 160 150 140 130 120 110 100mA 110 -75 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (ºC) Short Circuit Current 8 VOUT = 5V 6 4 HYSTERESIS 2 0 PULLUP RESISTOR TO -2 SEPARATE 5V SUPPLY 0 12 3 4 INPUT VOLTAGE (V) Error Comparator Output 5 2.5 100 mV 2.0 TA = 125ºC 50 mV 0 1.5 1.0 TA = 25ºC -50 mV ~~ CL= 1 µF IL= 1mA VOUT = 5V 8V TA = -55ºC 0.5 6V 0.0 4V 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0 200 400 600 800 OUTPUT LOW VOLTAGE (V) TIME(µs) LP2951 Comparator Sink Current Line Transient Response 10 IO= 100 µA 5 2 IO= 1mA 1 IO= 100mA 0.5 0.2 VOUT = 5V CL= 1 µF 0.1 0.05 0.02 0.01 10 100 1K 10K 100K FREQUENCY (Hz) Output Impedance 1M 90 90 80 70 IL= 0 60 80 70 IL = 1mA 60 CL= 1µF VIN= 6V VOUT = 5V 50 50 40 CL= 1 µF 30 VIN= 6V VOUT = 5V 20 IL= 100 µA 10 1 10 2 10 3 10 4 10 5 10 6 FREQUENCY (Hz) Ripple Rejection 40 30 20 10 1 IL = 10mA 10 2 10 3 10 4 FREQUENCY (Hz) 10 5 Ripple Rejection 10 6 Rev G LP2950-5 Low Dropout Linear Regulators © 2008 Exar Corporation 5 Page     +V IN AUX SHUTDOW INPUT ON OFF 8 SD +V IN _______ 5 ERROR LP295 0K Ω. 5 DEGR.EE SHUTDOWN FLAG V OUT + TEMP AS5 SENSOR - GND FB 7 8.2K Ω EXTERNAL CIRCUIT PROTECTED FROM OVER TEMPERATURE (V+ GOES OFF WHEN TEMP > 25) OR RELAY       20mA N00 0.µF +5V .7mA 8 +V IN V OUT LP295 7 FB OUTPUT 2 GND 0K Ω N57 MIN VOLTAGE = V UNREGULATED INPUT 8 IN 0KΩ V OUT LP295 27KΩ 2N52 (2) V TAP FB 7 2 SENSE GND + .7µF 5V OUTPUT LOAD 50mA TO 00 mA                  042408 Rev F LP2950-51 Low Dropout Linear Regulator 11 © 2008 Exar Corporation 11 Page

Páginas	Total 16 Páginas
PDF Descargar	[ Datasheet LP2950.PDF ]

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