7805 三端稳压

©2002 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev. 1.0.5 Features • Output Current up to 0.5A • Output Voltages of 5, 6, 8, 12, 15, 18, 24V • Thermal Overload Protection • Short Circuit Protection • Output Transistor Safe Operating Area (SOA) Protection Description The KA78MXX series of three terminal positive regulators are available in the TO-220/D-PAK package with several fixed output voltages making it useful in a wide range of applications. TO-220 D-PAK 1. Input 2. GND 3. Output 1 1 GND GND Internal Block Diagram OUTPUT 3 R1 R2 GND 2 1 INPUT SERIES PASS ELEMENT SOA PROTECTION CURRENT GENERATOR STARTING CIRCUIT REFERENCE VOLTAGE ERRORAMPLIFIER THERMAL PROTECTION KA78MXX 3-Terminal 0.5A Positive Voltage Regulator KA78MXX 2 Absolute Maximum Ratings Note: 1. Thermal resistance test board Size: 76.2mm * 114.3mm * 1.6mm(1S0P) JEDEC standard: JESD51-3, JESD51-7 2. Assume no ambient airflow Electrical Characteristics (KA78M05/KA78M05R) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=10V, unless otherwise specified, CI =0.33µF, CO=0.1µF) Note: 3. Load and line regulation are specified at constant junction temperature. Change in Vo due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Value Unit Input Voltage (for VO = 5V to 18V) (for VO = 24V) VI VI 35 40 V V Thermal Resistance Junction-Cases (Note1) TO-220 (Tc = +25°C) RθJC 2.5 °C/W Thermal Resistance Junction-Air (Note1,2) TO-220 (Ta = +25°C) D-PAK (Ta = +25°C) RθJA 66 92 °C/W Operating Junction Temperature Range TOPR 0 ~ +150 °C Storage Temperature Range TSTG -65 ~ +150 °C Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage VO TJ =+25°C 4.8 5 5.2 VIO = 5 to 350mA VI = 7 to 20V 4.75 5 5.25 Line Regulation (Note3) ∆VO IO = 200mA TJ =+25°C VI= 7 to 25V - - 100 mV VI = 8 to 25V - - 50 Load Regulation (Note3) ∆VO IO = 5mA to 0.5A, TJ = +25°C - - 100 mV IO = 5mA to 200mA, TJ =+25°C - - 50 Quiescent Current IQ TJ = +25°C - 4.0 6.0 mA Quiescent Current Change ∆IQ IO = 5mA to 350mA - - 0.5 mAIO = 200mA VI = 8 to 25V - - 0.8 Output Voltage Drift ∆V/∆T IO = 5mATJ = 0 to +125°C - -0.5 - mV/°C Output Noise Voltage VN f = 10Hz to 100kHz - 40 - µV/Vo Ripple Rejection RR f = 120Hz, IO = 300mAVI = 8 to 18V, TJ = +25°C - 80 - dB Dropout Voltage VD TJ = +25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ = +25°C, VI = 35V - 300 - mA Peak Current IPK TJ = +25°C - 700 - mA KA78MXX 3 Electrical Characteristics (KA78M06/KA78M06R) (Continued) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=11V, unless otherwise specified, CI =0.33µF, CO=0.1µF) Note: 1. Load and line regulation are specified at constant, junction temperature. Change in Vo due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage VO TJ = +25°C 5.75 6 6.25 VIO = 5 to 350mA VI = 8 to 21V 5.7 6 6.3 Line Regulation (Note1) ∆VO IO = 200mA TJ =+25°C VI = 8 to 25V - - 100 mV VI = 9 to 25V - - 50 Load Regulation (Note1) ∆VO IO = 5mA to 0.5A, TJ =+25°C - - 120 mV IO = 5mA to 200mA, TJ =+25°C - - 60 Quiescent Current IQ TJ =+25°C - 4.0 6.0 mA Quiescent Current Change ∆IQ IO = 5mA to 350mA - - 0.5 mAIO = 200mA VI = 9 to 25V - - 0.8 Output Voltage Drift ∆V/∆T IO = 5mATJ = 0 to +125°C - -0.5 - mV/°C Output Noise Voltage VN f = 10Hz to 100kHz - 45 - µV/Vo Ripple Rejection RR f = 120Hz, IO = 300mAVI = 9 to 19V, TJ = +25°C - 80 - dB Dropout Voltage VD TJ =+25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ= +25°C, VI = 35V - 300 - mA Peak Current IPK TJ =+25°C - 700 - mA KA78MXX 4 Electrical Characteristics (KA78M08/KA78M08R) (Continued) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=14V, unless otherwise specified, CI =0.33µF, CO=0.1µF) Note: 1. Load and line regulation are specified at constant, junction temperature. Change in Vo due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage VO TJ = +25°C 7.7 8 8.3 VIO = 5 to 350mA VI= 10.5 to 23V 7.6 8 8.4 Line Regulation (Note1) ∆VO IO = 200mA TJ =+25°C VI = 10.5 to 25V - - 100 mV VI = 11 to 25V - - 50 Load Regulation (Note1) ∆VO IO = 5mA to 0.5A, TJ = +25°C - - 160 mV IO = 5mA to 200mA, TJ = +25°C - - 80 Quiescent Current IQ TJ = +25°C - 4.0 6.0 mA Quiescent Current Change ∆IQ IO = 5mA to 350mA - - 0.5 mAIO = 200mA VI = 10.5 to 25V - - 0.8 Output Voltage Drift RR IO = 5mATJ = 0 to +125°C - -0.5 - mV/°C Output Noise Voltage VN f = 10Hz to 100kHz - 52 - µV/Vo Ripple Rejection RR f = 120Hz, IO = 300mAVI = 11.5 to 21.5V, TJ = +25°C - 80 - dB Dropout Voltage VD TJ =+25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ =+25°C, VI= 35V - 300 - mA Peak Current IPK TJ =+25°C - 700 - mA KA78MXX 5 Electrical Characteristics (KA78M12/KA78M12R) (Continued) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=19V, unless otherwise specified, CI =0.33µF, CO=0.1µF) Note: 1. Load and line regulation are specified at constant, junction temperature. Change in Vo due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage VO TJ = +25°C 11.5 12 12.5 VIO = 5 to 350mA VI = 14.5 to 27V 11.4 12 12.6 Line Regulation (Note1) ∆VO IO = 200mA TJ = +25°C VI= 14.5 to 30V - - 100 mV VI = 16 to 30V - - 50 Load Regulation (Note1) ∆VO IO = 5mA to 0.5A, TJ = +25°C - - 240 mV IO = 5mA to 200mA, TJ =+25°C - - 120 Quiescent Current IQ TJ=+25°C - 4.1 6.0 mA Quiescent Current Change ∆IQ IO = 5mA to 350mA - - 0.5 mAIO = 200mA VI = 14.5 to 30V - - 0.8 Output Voltage Drift ∆V/∆T IO = 5mATJ = 0 to +125°C - -0.5 - mV/°C Output Noise Voltage VN f = 10Hz to 100kHz - 75 - µV/Vo Ripple Rejection RR f = 120Hz, IO = 300mAVI = 15 to 25V, TJ = +25°C - 80 - dB Dropout Voltage VD TJ =+25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ= +25°C, VI = 35V - 300 - mA Peak Current IPK TJ = +25°C - 700 - mA KA78MXX 6 Electrical Characteristics (KA78M15) (Continued) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=23V, unless otherwise specified, CI =0.33µF, CO=0.1µF) Note: 1. Load and line regulation are specified at constant, junction temperature. Change in Vo due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage VO TJ =+25°C 14.4 15 15.6 VIO = 5 to 350mA VI = 17.5 to 30V 14.25 15 15.75 Line Regulation (Note1) ∆VO IO = 200mA TJ = +25°C VI = 17.5 to 30V - - 100 mV VI = 20 to 30V - - 50 Load Regulation (Note1) ∆VO IO = 5mA to 0.5A, TJ =+25°C - - 300 mV IO = 5mA to 200mA, TJ =+25°C - - 150 Quiescent Current IQ TJ =+25°C - 4.1 6.0 mA Quiescent Current Change ∆IQ IO = 5mA to 350mA - - 0.5 mAIO = 200mA VI = 17.5 to 30V - - 0.8 Output Voltage Drift ∆V/∆T IO = 5mATJ = 0 to +125°C - -1 - mV/°C Output Noise Voltage VN f = 10Hz to 100kHz - 100 - µV/Vo Ripple Rejection RR f = 120Hz, IO = 300mAVI = 18.5 to 28.5V, TJ = +25°C - 70 - dB Dropout Voltage VD TJ =+25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ= +25°C, VI = 35V - 300 - mA Peak Current IPK TJ = +25°C - 700 - mA KA78MXX 7 Electrical Characteristics (KA78M18) (Continued) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=26V, unless otherwise specified, CI =0.33µF, CO=0.1µF) Note: 1. Load and line regulation are specified at constant, junction temperature. Change in Vo due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage VO TJ = +25°C 17.3 18 18.7 VIO = 5 to 350mA VI = 20.5 to 33V 17.1 18 18.9 Line Regulation (Note1) ∆VO IO = 200mA TJ =+25°C VI = 21 to 33V - - 100 mV VI = 24 to 33V - - 50 Load Regulation (Note1) ∆VΟ IO = 5mA to 0.5A, TJ = +25°C - - 360 mV IO = 5mA to 200mA, TJ = +25°C - - 180 Quiescent Current IQ TJ =+25°C - 4.2 6.0 mA Quiescent Current Change ∆IQ IO = 5mA to 350mA - - 0.5 mAIO = 200mA VI = 21 to 33V - - 0.8 Output Voltage Drift ∆V/∆T IO = 5mATJ = 0 to 125°C - -1.1 - mV/°C Output Noise Voltage VN f = 10Hz to 100kHz - 100 - µV/Vo Ripple Rejection RR f = 120Hz, IO=300mA , VI=22 to 32VTJ = +25°C - 70 - dB Dropout Voltage VD TJ = +25°C, IO=500mA - 2 - V Short Circuit Current ISC TJ = +25°C, VI=35V - 300 - mA Peak Current IPK TJ = +25°C - 700 - mA KA78MXX 8 Electrical Characteristics (KA78M24) (Continued) (Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=33V, unless otherwise specified, CI =0.33µF, CO=0.1µF) Note: 1. Load and line regulation are specified at constant, junction temperature. Change in Vo due to heating effects must be taken into account separately. Pulse testing with low duty is used. Parameter Symbol Conditions Min. Typ. Max. Unit Output Voltage VO TJ = +25°C 23 24 25 VIO = 5 to 350mA VI = 27 to 38V 22.8 24 25.2 Line Regulation ∆VO IO = 200mA TJ = +25°C VI = 27 to 38V - - 100 mV VI = 28 to 38V - - 50 Load Regulation ∆VO IO = 5mA to 0.5A, TJ =+25°C - - 480 mV IO = 5mA to 200mA, TJ =+25°C - - 240 Quiescent Current IQ TJ = +25°C - 4.2 6 mA Quiescent Current Change ∆IQ IO = 5mA to 350mA - - 0.5 mAIO = 200mA VI = 27 to 38V - - 0.8 Output Voltage Drift ∆V/∆T IO = 5mATJ = 0 to +125°C - -1.2 - mV/°C Output Noise Voltage VN f = 10Hz to 100kHz - 170 - µV Ripple Rejection RR f = 120Hz, IO = 300mAVI = 28 to 38V, TJ = +25°C - 70 - dB Dropout Voltage VD TJ =+25°C, IO = 500mA - 2 - V Short Circuit Current ISC TJ = +25 °C, VI = 35V - 300 - mA Peak Current IPK TJ = +25°C - 700 - mA KA78MXX 9 Typical Applications Figure 1. Fixed Output Regulator Figure 2. Constant Current Regulator Notes: 1. To specify an output voltage, substitute voltage value for "XX" 2. Although no output capacitor is needed for stability, it does improve transient response. 3. Required if regulator is located an appreciable distance from power Supply filter Figure 3. Circuit for Increasing Output Voltage 0.1µFCOCI 0.3µF VOVI KA78MXX 1 3 2 0.1µF COCI 0.33µF IO VI KA78MXX 1 3 2 VXX IO R1 IO = R1 +IO Vxx 0.1µF COCI 0.33µF IO VI KA78MXX 1 3 2 VXX VO R1 R2IR1 ≥ 5IO VO = VXX (1+R2/R1) +IOR2 KA78MXX 10 Figure 4. Adjustable Output Regulator (7 to 30V) Figure 5. 0.5 to 10V Regulator 0.1µF COCI 0.33µF VOVI KA78M05 1 3 2 10kΩ3 2 4 7 6 LM741 0.1µF C2 C1 0.33µF VOVI KA78M05 1 3 2 10kΩ 3 2 4 7 6 LM741 R3 R1 VXX R4 R5 910Ω 9.1kΩ 13V < VI < 25V -7 < -VI < 17V _ + VO = Vxx R1 R4 KA78MXX 11 Mechanical Dimensions Package Dimensions in millimeters 4.50 ±0.209.90 ±0.20 1.52 ±0.10 0.80 ±0.10 2.40 ±0.20 10.00 ±0.20 1.27 ±0.10 ø3.60 ±0.10 (8.70) 2. 80 ±0 .1 0 15 .9 0 ±0 .2 0 10 .0 8 ±0 .3 0 18 .9 5M AX . (1. 70 ) (3. 70 ) (3. 00 ) (1. 46 ) (1. 00 ) (45 °) 9. 20 ±0 .2 0 13 .0 8 ±0 .2 0 1. 30 ±0 .1 0 1.30 +0.10 –0.05 0.50 +0.10 –0.05 2.54TYP [2.54 ±0.20] 2.54TYP [2.54 ±0.20] TO-220 KA78MXX 12 Mechanical Dimensions (Continued) Package Dimensions in millimeters 6.60 ±0.20 2.30 ±0.10 0.50 ±0.10 5.34 ±0.30 0. 70 ±0 .2 0 0. 60 ±0 .2 0 0. 80 ±0 .2 0 9. 50 ±0 .3 0 6. 10 ±0 .2 0 2. 70 ±0 .2 0 9. 50 ±0 .3 0 6. 10 ±0 .2 0 2. 70 ±0 .2 0 M IN 0. 55 0.76 ±0.10 0.50 ±0.10 1.02 ±0.20 2.30 ±0.20 6.60 ±0.20 0.76 ±0.10 (5.34) (1.50) (2XR0.25) (5.04) 0. 89 ±0 .1 0 (0. 10 ) (3. 05 ) (1. 00 ) (0. 90 ) (0. 70 ) 0. 91 ±0 .1 0 2.30TYP [2.30±0.20] 2.30TYP [2.30±0.20] MAX0.96 (4.34)(0.50) (0.50) D-PAK KA78MXX 13 Ordering Information Product Number Package Operating Temperature KA78M05 TO-220 0 ~ +125°C KA78M06 KA78M08 KA78M12 KA78M15 KA78M18 KA78M24 KA78M05R D-PAK KA78M06R KA78M08R KA78M12R KA78MXX 11/12/02 0.0m 001 Stock#DSxxxxxxxx  2002 Fairchild Semiconductor Corporation LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. 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