KA79XX / KA79XXA / LM79XX 3-Terminal 1 A Negative Voltage Regulator

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1 KA79XX / KA79XXA / LM79XX 3-Terminal 1 A Negative oltage Regulator Features Output Current in Excess of 1 A s of: -5, -6, -8, -9, -12, -15, -18, -24 Internal Thermal Overload Protection Short-Circuit Protection Output Transistor Safe Operating Area Compensation Ordering Information Product Number KA7905TU KA7906TU KA7908TU KA7909TU KA7912TU KA7915TU KA7918TU KA7924TU KA7912ATU KA7915ATU LM7905CT LM7908CT LM7909CT LM7910CT LM7912CT LM7915CT LM7918CT Tolerance ±4% ±2% ±4% Package TO-220 (Dual Gauge) TO-220 (Single Gauge) Description Packing Method Rail September 2014 The KA79XX / KA79XXA / LM79XX series of three-terminal negative regulators are available in a TO-220 package with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shutdown, and safe operating area protection. TO Input 1. GND 2. Input 3. Output Operating Temperature 0 to +125 C KA79XX / KA79XXA / LM79XX Rev

2 Block Diagram GND OLTAGE REFERENCE Absolute Maximum Ratings I1 + - I2 PROTECTION CIRCUITRY Figure 1. Block Diagram Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. alues are at T A = 25 C unless otherwise noted. Symbol Parameter alue Unit I Input oltage -35 R θjc Thermal Resistance, Junction-Case (1) 5 C/W R θja Thermal Resistance, Junction-Air (1, 2) 65 C/W T OPR Operating Temperature Range 0 to +125 C T STG Storage Temperature Range - 65 to +150 C Q1 Q2 R1 R2 Rsc Output In Input Notes: 1. Thermal resistance test board, size: 76.2 mm x mm x 1.6 mm(1s0p), JEDEC standard: JESD51-3, JESD Assume no ambient airflow. KA79XX / KA79XXA / LM79XX Rev

3 Electrical Characteristics (KA7905 / LM7905) ( I = -10, I O = 500, 0 C T J +125 C, C I = 2.2 μf, C O = 1 μf; unless otherwise specified.) T J = +25 C I O = 5 to 1 A, P O 15 W, I = -7 to Δ Line Regulation (3) I = -7 to T J = +25 C I = -8 to Δ Load Regulation (3) T J = +25 C, I O = 5 to 1.5 A T J = +25 C, I O = 250 to I = -8 to of D I O = / C N Output Noise oltage f = 10 Hz to 100 khz, T A = +25 C 40 μ 3. Load and line regulation are specified at constant junction temperature. s in due to heating effects must KA79XX / KA79XXA / LM79XX Rev

4 Electrical Characteristics (KA7906) ( I = -11, I O = 500, 0 C T J +125 C, C I = 2.2 μf, C O = 1 μf; unless otherwise specified.) T J = +25 C I O = 5 to 1 A, P O 15 W, I = -9 to Δ Line Regulation (4) I = -8 to T J = +25 C I = -9 to Δ Load Regulation (4) T J = +25 C, I O = 5 to 1.5 A T J = +25 C, I O = 250 to I = -8 to of D I O = / C N Output Noise oltage f = 10 Hz to 100 khz, T A =+25 C 130 μ 4. Load and line regulation are specified at constant junction temperature. s in due to heating effects must KA79XX / KA79XXA / LM79XX Rev

5 Electrical Characteristics (KA7908 / LM7908) ( I = -14, I O = 500, 0 C T J +125 C, C I = 2.2 μf, C O =1 μf; unless otherwise specified.) T J = +25 C I O = 5 to 1 A, P O 15 W, I = -10 to Δ Line Regulation (5) I = to T J = +25 C I = -11 to Δ Load Regulation (5) T J = +25 C, I O = 5 to 1.5 A T J = +25 C, I O = 250 to I = to of D I O = / C N Output Noise oltage f = 10 Hz to 100 khz, T A = +25 C 175 μ 5. Load and line regulation are specified at constant junction temperature. s in due to heating effects must KA79XX / KA79XXA / LM79XX Rev

6 Electrical Characteristics (KA7909 / LM7909) ( I = -15, I O = 500, 0 C T J +125 C, C I = 2.2 μf, C O =1 μf; unless otherwise specified.) T J = +25 C I O = 5 to 1 A, P O 15 W, I = -1.5 to Δ Line Regulation (6) I = to T J = +25 C I = -12 to Δ Load Regulation (6) T J = +25 C, I O = 5 to 1.5 A T J = +25 C, I O = 250 to I = to of D I O = / C N Output Noise oltage f = 10 Hz to 100 khz, T A = +25 C 175 μ 6. Load and line regulation are specified at constant junction temperature. s in due to heating effects must KA79XX / KA79XXA / LM79XX Rev

7 Electrical Characteristics (LM7910) ( I = -17, I O = 500, 0 C T J +125 C, C I = 2.2 μf, C O =1 μf; unless otherwise specified.) Δ Line Regulation (7) T J = +25 C Δ Load Regulation (7) T J = +25 C I O = 5 to 1A, P d 15 W, I = -12 to -28 T J = +25 C, I O = 5 to 1.5 A I = to I = -14 to T J = +25 C, I O = 250 to I = to of I O = 5-1 / C N Output Noise oltage 10 Hz f 100 khz, T A = +25 C 280 μ 7. Load and line regulation are specified at constant junction temperature. s in due to heating effects must KA79XX / KA79XXA / LM79XX Rev

8 Electrical Characteristics (KA7912 / LM7912) ( I = -19, I O = 500, 0 C T J +125 C, C I = 2.2 μf, C O = 1 μf; unless otherwise specified.) T J = +25 C I O = 5 to 1 A, P O 15 W I = to Δ Line Regulation (8) I = to T J = +25 C I = -16 to Δ Load Regulation (8) T J = +25 C, I O = 5 to 1.5 A T J = +25 C, I O = 250 to I = to of D I O = / C N Output Noise oltage f = 10 Hz to 100 khz, T A = +25 C 200 μ 8. Load and line regulation are specified at constant junction temperature. s in due to heating effects must KA79XX / KA79XXA / LM79XX Rev

9 Electrical Characteristics (KA7915 / LM7915) ( I = -23, I O = 500, 0 C T J +125 C, C I = 2.2 μf, C O = 1 μf; unless otherwise specified.) T J = +25 C I O = 5 to 1 A, P O 15 W I = -18 to Δ Line Regulation (9) I = to T J = +25 C I = -20 to Δ Load Regulation (9) T J = +25 C, I O = 5 to 1.5 A T J = +25 C, I O = 250 to I = to of D I O = / C N Output Noise oltage f = 10 Hz to 100 khz, T A = +25 C 250 μ 9. Load and line regulation are specified at constant junction temperature. s in due to heating effects must KA79XX / KA79XXA / LM79XX Rev

10 Electrical Characteristics (KA7918 / LM7918) ( I = -27, I O = 500, 0 C T J +125 C, C I = 2.2 μf, C O =1 μf, unless otherwise specified.) T J = +25 C I O = 5 to 1 A, P O 15 W I = to Δ Line Regulation (10) I = -21 to T J = +25 C I = -24 to Δ Load Regulation (10) T J = +25 C, I O = 5 to 1.5 A T J = +25 C, I O = 250 to I = -21 to of D I O = 5-1 / C N Output Noise oltage f = 10 Hz to 100 khz, T A = +25 C 300 μ 10. Load and line regulation are specified at constant junction temperature. s in due to heating effects must KA79XX / KA79XXA / LM79XX Rev

11 Electrical Characteristics (KA7924) ( I = -33, I O = 500, 0 C T J +125 C, C I = 2.2 μf, C O = 1 μf; unless otherwise specified.) T J = +25 C I O = 5 to 1 A, P O 15 W, I = -27 to Δ Line Regulation (11) I = -27 to T J = +25 C I = -30 to Δ Load Regulation (11) T J = +25 C, I O = 5 to 1.5 A T J = +25 C, I O = 250 to I = -27 to of D I O = 5-1 / C N Output Noise oltage f = 10 Hz to 100 khz, T A = +25 C 400 μ 11. Load and line regulation are specified at constant junction temperature. s in due to heating effects must KA79XX / KA79XXA / LM79XX Rev

12 Electrical Characteristics (KA7912A) ( I = -19, I O = 500, 0 C T J +125 C, C I = 2.2 μf, C O =1 μf; unless otherwise specified.) Δ Line Regulation (12) T J = +25 C T J = +25 C I O = 5 to 1 A, P O 15 W, I = to -27 I = to -27, Io = 1 A I = -16 to -22, Io = 1 A 6 60 I = to I = -16 to -22, Io = 1 A Δ Load Regulation (12) T J = +25 C, I O = 5 to 1.5 A T J = +25 C, I O = 250 to I = -15 to of D I O = / C N Output Noise oltage f = 10 Hz to 100 khz, T A = +25 C 200 μ 12. Load and line regulation are specified at constant junction temperature. s in due to heating effects must KA79XX / KA79XXA / LM79XX Rev

13 Electrical Characteristics (KA7915A) ( I = -23, I O = 500, 0 C T J +125 C, C I = 2.2 μf, C O = 1 μf; unless otherwise specified.) Δ Line Regulation (13) T J = +25 C T J = +25 C I O = 5 to 1 A, P O 15 W, I = -18 to -30 I = to -30, Io = 1 A I = -20 to -26, Io = 1 A 6 75 I = to I = -20 to -26, Io = 1 A Δ Load Regulation (13) T J = +25 C, I O = 5 to 1.5 A T J = +25 C, I O = 250 to I = to of D I O = / C N Output Noise oltage f = 10 Hz to 100 khz, T A = +25 C 250 μ 13. Load and line regulation are specified at constant junction temperature. s in due to heating effects must KA79XX / KA79XXA / LM79XX Rev

14 Typical Performance Characteristics Ou tp ut [-] o lta ge [- ] [] in=10 Io=40 in=25 Io=100 TA, Ambient Temperature [ o C] Figure 2. T A, Ambient Temperature [ o C] Figure 4. D l [] Load Regulation[] Dropout oltage [] Lo ad Re gul ati on [m ] Io=1.5A Io=0.75A TA, Ambient Temperature [ o C] Figure 3. Load Regulation Io=1A T A, Ambient Temperature [ o C] Figure 5. Dropout oltage Short Circuit Current[A] Sh ort Cir cui t Cu rre nt [A] TA, Ambient Temperature [ o C] Figure 6. Short-Circuit Current KA79XX / KA79XXA / LM79XX Rev

15 Typical Applications μf 1 μf + + C Co I 1 2 KA79XX 3 Input LM79XX Output C1 Figure 7. Negative Fixed Output Regulator C μf 2.2 μf 1 KA LM KA LM7912 Co + 1 μf 1 μf Co + 1N4001 * 1N4001 * +12 GND -12 Figure 8. Split Power Supply (12 / 1 A) Notes: 14. To specify an output voltage, substitute voltage value for "XX". 15. C I is required if the regulator is located an appreciable distance from the power supply filter. For value given, capacitor must be solid tantalum. If aluminium electronics are used, at least ten times the value shown should be selected. 16. C O improves stability and transient response. If large capacitors are used, a high-current diode from input to output (1N4001 or similar) should be introduced to protect the device from momentary input short circuit. KA79XX / KA79XXA / LM79XX Rev

16 Physical Dimensions Figure 9. TO-220, MOLDED, 3-LEAD, JEDEC ARIATION AB (ACTIE) KA79XX / KA79XXA / LM79XX Rev

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18 Mouser Electronics Authorized Distributor Click to iew Pricing, Inventory, Delivery & Lifecycle Information: Fairchild Semiconductor: KA7908TSTU KA7905ATU KA7912 KA7910TU KA7905TSTU KA7906TSTU KA7908 KA7909 KA7915TSTU KA7918 KA7918TSTU KA7924TSTU KA7915 KA7906 KA7912TSTU KA7905 KA7924

KA79XX / KA79XXA / LM79XX 3-Terminal 1 A Negative Voltage Regulator

KA79XX / KA79XXA / LM79XX 3-Terminal 1 A Negative oltage Regulator Features Output Current in Excess of 1 A s of: -5, -6, -8, -9, -12, -15, -18, -24 Internal Thermal Overload Protection Short-Circuit Protection