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PDF KA278R09 Data sheet ( Hoja de datos )

Número de pieza KA278R09
Descripción Low Dropout Voltage Regulator
Fabricantes Fairchild 
Logotipo Fairchild Logotipo



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No Preview Available ! KA278R09 Hoja de datos, Descripción, Manual

KA278R09
Low Dropout Voltage Regulator
www.fairchildsemi.com
Features
• 2A / 9V Output low dropout voltage regulator
• TO220 Full-Mold package (4PIN)
• Overcurrent protection, Thermal shutdown
• Overvoltage protection, Short-Circuit protection
• With output disable function
Description
The KA278R09 is a low-dropout voltage regulator suitable
for various electronic equipments. It provide constant
voltage power source with TO-220F-4 lead full mold
package. Dropout voltage of KA278R09 is below 0.5V in
full rated current(2A). This regulator has various function
such as peak current protection, thermal shut down,
overvoltage protection and output disable function.
TO-220F-4L
1
1. Vin 2. Vo 3. GND 4. Vdis
Internal Block Diagram
Vin 1
THERMAL SHUTDOWN
BANDGAP REFERENCE
Vdis
HIGH / LOW
4
-
+
OUTPUT
ON / OFF
1.4V
OVERVOLTAGE
PROTECTION
-
+
SOA PROTECTION
SHSOHROTR-TCCIIRRCCUUIITT
PROTECTION
Q1
R1
R2
2 Vo
©2001 Fairchild Semiconductor Corporation
3
GND
Rev. 1.0.2

1 page




KA278R09 pdf
Typical Application
Vin
1
Vo
2
4
Vdis
3
GND
Disable Signal
Figure 1. Application Circuit
• Ci is required if regulator is located an appreciable distance from power supply filter.
• Co improves stability and transient response.(Co > 47µF)
KA278R09
5

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