FIXED VOLTAGE REGULATOR(POSITIVE)

Size: px

Start display at page:

Download "FIXED VOLTAGE REGULATOR(POSITIVE)"

Elijah Davidson
5 years ago
Views:

1 3-TERMINAL 3A PSITIVE VLTAGE REGULATRS This family of fixed voltage regulators are monolithic integrated circuits capable of driving loads in excess of 3.0 amperes. T-220 FEATURES utput current in excess of 3.0A utput transistor safe-area compensation Power dissipation: 25W Internal short-circuit current limiting Internal thermal overload protection utput voltage offered in 4% tolerance No external components required utput voltage of 5; 6; 8; 12; ; 18V RDERING INFRMATIN 1: Input 2: GND 3: utput Device Package perating Temperature KA78TXX T-220 0~ 125& BLCK DIAGRAM

2 ABSLUTE MAXIMUM RATINGS (T A=25&, unless otherwise specified) Input Voltage (5.0V - 12V) (V - 24V) Characteristic Symbol Value Unit V I Power Dissipation P D Internally limited Thermal Resistance, Junction to Air T C=25& RÞJA 65 &/W Thermal Resistance. Junction to Case RÞJC 2.5 &/W perating Temperature Range T PR 0 to & Storage Temperature Range T STG -65 to + 0 & V V KA78T05 ELECTRICAL CHARACTERISTICS (V I = V, Io = 3.0A, T J = 0& to 125&, PoP max, unless otherwise specified) KA78T05 Characteristic Symbol Test Conditions Unit Min Typ Max 5Io3.0A,T J=25& utput Voltage V 5Io3A; 7.3VV I20V,5Io2A Line Regulation ºV 7.2VV I35V, Io=5,T j=25& 7.2VV I35V, Io=1.0A,T j=25& 7.5VV I20V, Io=2.0A 8.0VV I12V, Io=3.0A Load Regulation ºV 5Io3.0A, T J = 25& 5Io3.0A Pulse=ms, P = 20W, Thermal Regulation REG T T A=25& 5Io3A, T J = 25& 5Io3A ºI Q 7.2VV I35V, Io =5, T J=25&; 7.5VV I20V, Io =2A; 5Io3A Cofficient of ºVo/ºT Io= utput Voltage eload and line regulation are specified at constant junction temperature. in V due to heating effects must be taken (P MAX = 25W) `V /W Ripple Rejection RR 8VV I18V, f =120Hz, Io =2.0A 75 db Dropout Voltage V D Io =3A, T J =25& utput Noise Voltage V N Hzf0KHz, T J =25& âv/vo utput Resistance R f=1.0khz 2.0 mî Short Circuit Current I SC V I =35V, T J =25& A Peak utput Current I PK T J =25& 5.0 A

3 KA78T06 ELECTRICAL CHARACTERISTICS (V I = 11V, I = 3.0V, T J = 0&, to 125&, P P max, unless otherwise specified) 5.0I 3A, T J= utput Voltage V 5.0I 3A; V 8.3VV I21V, 5I 2A 8.25VV I35V, I =5.0, T J=; 8.25VV Line Regulation ºV I35V, I =1.0A, T J=; 8.6VV I21V, I =2.0A 9.0VV I13V, I =3.0A 5I Load Regulation ºV 3A, T J = 4.0 Thermal Regulation REG T Pulse = ms, P = 20W, T A = 25& `V /W, T J = VV I3A, T J = ; ºI Q 8.6VV I21V, I = 2A; 5I 3.0A Ripple Rejection RR 9VV I19V, f = 120Hz, I = 2A db Dropout Voltage V D I = 3A, T J = V utput Noise Voltage V N Hzf0KHz, T J = âv/v Short Circuit Current I SC VI = 35V, T J= A Peak utput Current I PK T J = 5.0 A Cofficient of utput ºV /ºT I = /& Voltage

4 KA78T08 ELECTRICAL CHARACTERISTICS (V I = 14V, I = 3.0V, T J = 0&to 125&, P P max,, unless otnerwise specified) 5.0I 3A, T J = utput Voltage V 5.0I 3A;.4VV I23V, 5I 2A Line Regulation ºV.3VV I35V,I =5.0, T J =.3VV I35V,I =1.0 A, T J =.7VV I23V, I = 2.0A 11VV I17V, I = 3.0A Load Regulation ºV, T J = Thermal Regulation REG T Pulse = ms, P = 20W, T A = 25& `V /W, T J = VV I35V, I =5, T J = ºI Q.7VV I23V, I = 2A Ripple Rejection RR 11VV I21V, f = 120Hz, I = 2A db Dropout Voltage V D I = 3A, T J = utput Noise Voltage V N Hzf0KHz, T J = âv/v Short Circuit Current I SC V I = 35V, T J = A Peak utput Current I PK T J = 5.0 A Cofficient of utput ºV /ºT I = /& Voltage

5 KA78T12 ELECTRICAL CHARACTERISTICS (V I = 19V, I = 3.0A, T J = 0&to 125&, P P MAX,unless otherwise noted) 5.0I 3A, T J = 25& utput Voltage V 5.0I 3A; 5.0I 2A, 14.5VV I27V VV I35V, I = 5, T J = 25&; 14.5VV I35V, I = 1.0A, T J = 2.5& Line Regulation ºV 14.9VV I28V, I = 2.0A VV I22V, I = 3.0V 5I Load Regulation ºV 3A, T J = 25& Pulse = ms, P = 20W Thermal Regulation REG T `V T A = 25& /W 5I I 3A, T J = Q 25& Ripple Rejection ºI Q RR 14.5VV,35V, I = 5, T J = 25&; 14.0VV,27V, I = 2A; 5.0I 3.0A V,25VDC, f = 120Hz, I = 2.0A db Dropout Voltage V D I = 3A, T J = 25& utput Noise Voltage V N Hzf0Hz, T J = 25& âv/v Short Circuit Current I SC V, = 35V, T J = 25& A Peak utput Current I PK T J = 25& 5.0 A Cofficient of utput Voltage ºV /ºT I = /&

6 KA78T ELECTRICAL CHARACTERISTICS (V I = 23V, I = 3.0A, T J = 0& to 125&, P P MAX, unless otherwise noted) Characteriistic Symbol Test Conditions Min Typ Max Unit, T J = utput Voltage V ; 17.5V I, 5I 2A Line Regulation ºV 17.6V I40V, I = 5, T J = 17.6V I40V, I = 1, T J = 18VV IV, I = 2.0A; 20VV I26V,I = 3.0A Load Regulation ºV f, T J = Pulse = ms, P = 20W, Thermal Regulation REG T T A = 25&, T J = 17.6V I40V, I = 5, T J = ºI Q 18VV IV, I = 2.0A; Cofficient of ºV /ºT I = /& utput Voltage `V /W Ripple Rejection RR 18.5V I28.5,f=120Hz,I =2.0A db Dropout Voltage V D I = 3.0A, T J = utput Noise Voltage V N Hzf0KHz, T J = âv/v Short Circuit Current I SC V I = 40V, T J= A Peak utput Current I K T J = 5.0 A

7 KA78T18 ELECTRICAL CHARACTERISTICS (V I = 27V, I = 3.0V, T J = 0& to 125&, P P MAX,unless otherwise specified) 5.0I 3A, T J = utput Voltage V 5.0I 3A; 20.6V I33V, 5I 2A VV I40V, I =5.0, T J =; 20.7VV Line Regulation ºV I40V, I =1A, T J= 21.2VV I33V, I =2.0A; 24VV IV, I =3A 5.0I Load Regulation ºV 3A, T J = 5.0I 3A 9.0 Thermal Regulation REG T Pulse = ms, P = 20W, T A = 25& I 3A, T J = I 3A ºI Q 20.7VV I40V, I =5.0, T J = 21.2VV I33V, I =2.0A; 5I 3.0A Coefficient of ºV/ºT I = /& utput Voltage Ripple Rejection RR 22V I32V, f = 120Hz, I = 2.0A db Dropout Voltage V D I = 3A, T J = utput Noise Voltage V N Hzf0KHz, T J = âv/v utput Circuit Current I SC V I = 40V, T J = A Peak utput Current I PK T J= 5.0 A

KA78TXX. 3-Terminal 3A Positive Voltage Regulator. Features. Description. Internal Block Diagram.

KA78TXX. 3-Terminal 3A Positive Voltage Regulator. Features. Description. Internal Block Diagram. 3Terminal 3A Positive oltage Regulator www.fairchildsemi.com Features Output Current in Excess of 3.0A Output Transistor Safe Operating Area Compensation Power Dissipation: 25W Internal Short Circuit Current