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Part: KA78R09C
Category:
Power Management
-> Regulators
-> Linear Regulators
-> LDO (Low Drop Out)
Description: 1A Fixed 9V Low Dropout Voltage Regulator (LDO)
Company: Fairchild Semiconductor
Datasheet: Download KA78R09C datasheet File size : 429 kB
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Datasheet text preview:
www.fairchildsemi.com
KA78RXXC-Series
1A Output Low Dropout Voltage Regulators
Features
· 1A/3.3V, 5V, 8V, 9V, 12V, 15V output low dropout voltage regulator · TO-220 full-mold package (4pin) · Overcurrent protection, thermal shutdown · Overvoltage protection, short circuit protection · With output disable function
Description
The KA78RXXC is a low-dropout voltage regulator suitable for various electronic equipments. It provides constant voltage power source with TO-220-4 lead full mold package. Dropout voltage of KA78RXXC is below 0.5V in full rated current(1A). This regulator has various functions 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 Q1 2 Vo
THERMAL SHUTDOWN
OVERVOLTAGE PROTECTION
BANDGAP REFERENCE
+ R1
SOA PROTECTION HIGH / LOW Vdis 4 + OUTPUT ON / OFF
1.4V
SHOOR-CIIRCUIIT UT SHRTTC
PROTECTION
R2
3 GND
Rev. 1.0.0
©2003 Fairchild Semiconductor Corporation
KA78RXXC-SERIES
Absolute Maximum Ratings
KA78RXXC
Parameter Input voltage Disable voltage Output current Power dissipation 1 Power dissipation 2 Junction temperature Operating temperature Thermal resistance, junction-to case (Note2) Thermal resistance, junction-to-air (Note2) Symbol Vin Vdis Io P d1 Pd2 Tj Topr Rjc Rja Value 35 35 1.0 1.5 15 +150 -20 ~ +80 4.31 48.83 Unit V V A W W °C °C ° C/W ° C/W Rem a rk No heatsink With heatsink -
2
KA78RXXC-SERIES
Electrical Characteristics
(Vin = Note3, Io = 0.5A, Ta = 25°C, unless otherwise specified) Parameter KA78R33C KA78R05C Output voltage KA78R08C KA78R09C KA78R12C KA78R15C Load regulation Line regulation Ripple rejection ratio Dropout voltage Disable voltage high Disable voltage low Disable bias current high Disable bias current low Quiescent current Rload Rline RR Vdr op VdisH VdisL IdisH Id i s L Iq N ot e 4 N ote1 Io = 1A Output active Output disabled Vdis = 2.7V Vdis = 0.4V Io = 0A Vo Symbol Conditions 5mA < Io < 1A Min. 3.22 4.88 7.8 8.78 11.7 14.6 45 2.0 Typ. 3.3 5 8 9 12 15 0.1 0.5 55 Max. 3.38 5.12 8.2 9.22 12.3 15.4 2.0 2. 5 0.5 0.8 20 - 0. 4 10 % % dB V V V µA mA mA V Unit
Note: 1.These parameters, although guaranteed, are not 100% tested in production. 2. Junction -to -case thermal resistance test environments. -. Pneumatic heat sink fixture. -. Clamping pressure 60psi through 12mm diameter cylinder. -. Thermal grease applied between PKG and heat sink fixture. 3. KA78R33C :Vin = 5V KA78R05C : Vin = 7V KA78R08C : Vin = 10V KA78R09C : Vin = 11V KA78R12C : Vin = 15V KA78R15C : Vin = 20V 4. KA78R33C :Vin = 4V to 10V KA78R05C : Vin = 6V to 12V KA78R08C : Vin = 9V to 25V KA78R09C : Vin = 10V to 25V KA78R12C : Vin = 13V to 29V KA78R15C : Vin = 16V to 30V
3
Others parts begin by ka
KA-1 KA-2 KA-3 KA-4 KA-5 KA-6 KA-7
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