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KA7912 Dataheets PDF



Part Number KA7912
Manufacturers Fairchild
Logo Fairchild
Description 3-Terminal 1A Negative Voltage Regulator
Datasheet KA7912 DatasheetKA7912 Datasheet (PDF)

KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator KA79XX / KA79XXA / LM79XX 3-Terminal 1 A Negative Voltage Regulator September 2014 Features • Output Current in Excess of 1 A • Output Voltages of: -5 V, -6 V, -8 V, -9 V, -12 V, -15 V, -18 V, -24 V • Internal Thermal Overload Protection • Short-Circuit Protection • Output Transistor Safe Operating Area Compensation Description The KA79XX / KA79XXA / LM79XX series of three-terminal negative regulators are available in a TO.

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KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator KA79XX / KA79XXA / LM79XX 3-Terminal 1 A Negative Voltage Regulator September 2014 Features • Output Current in Excess of 1 A • Output Voltages of: -5 V, -6 V, -8 V, -9 V, -12 V, -15 V, -18 V, -24 V • Internal Thermal Overload Protection • Short-Circuit Protection • Output Transistor Safe Operating Area Compensation Description 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-220 Input Ordering Information Product Number KA7905TU KA7906TU KA7908TU KA7909TU KA7912TU KA7915TU KA7918TU KA7924TU KA7912ATU KA7915ATU LM7905CT LM7908CT LM7909CT LM7910CT LM7912CT LM7915CT LM7918CT Output Voltage Tolerance ±4% ±2% ±4% © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.1 1 1. GND 2. Input 3. Output Package Packing Method Operating Temperature TO-220 (Dual Gauge) Rail 0 to +125°C TO-220 (Single Gauge) www.fairchildsemi.com KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Block Diagram GND VOLTAGE REFERENCE I1 R1 R2 OOuutptut + Q1 - Q2 PROTECTION I2 CIRCUITRY Rsc In Input Figure 1. Block Diagram Absolute Maximum Ratings 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. Values are at TA = 25°C unless otherwise noted. Symbol Parameter Value Unit VI RθJC RθJA TOPR TSTG Input Voltage Thermal Resistance, Junction-Case(1) Thermal Resistance, Junction-Air(1, 2) Operating Temperature Range Storage Temperature Range -35 5 65 0 to +125 - 65 to +150 V °C/W °C/W °C °C Notes: 1. Thermal resistance test board, size: 76.2 mm x 114.3 mm x 1.6 mm(1S0P), JEDEC standard: JESD51-3, JESD51-7. 2. Assume no ambient airflow. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.1 2 www.fairchildsemi.com KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (KA7905 / LM7905) (VI = -10 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) Symbol Parameter Conditions Min. Typ. Max. Unit VO ΔVO ΔVO IQ ΔIQ ΔVo/ΔT VN RR VD ISC IPK Output Voltage Line Regulation(3) Load Regulation(3) Quiescent Current Quiescent Current Change Temperature Coefficient of VD Output Noise Voltage Ripple Rejection Dropout Voltage Short-Circuit Current Peak Current TJ = +25°C IO = 5 mA to 1 A, PO ≤ 15 W, VI = -7 V to -20 V TJ = +25°C VI = -7 V to -25 V VI = -8 V to -12 V TJ = +25°C, IO = 5 mA to 1.5 A TJ = +25°C, IO = 250 mA to 750 mA TJ = +25°C IO = 5 mA to 1 A VI = -8 V to -25 V IO = 5 mA f = 10 Hz to 100 kHz, TA = +25°C f = 120 Hz, ΔVI = 10 V TJ = +25°C, IO = 1 A TJ = +25°C, VI = -35 V TJ = +25°C -4.80 -4.75 54 -5.00 -5.00 35 8 10 3 3 0.05 0.10 -0.4 40 60 2 300 2.2 -5.20 -5.25 V 100 50 100 50 6 0.50 0.80 mV mV mA mA mV/°C μV dB V mA A Note: 3. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.1 3 www.fairchildsemi.com KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (KA7906) (VI = -11 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) Symbol Parameter Conditions Min. Typ. Max. Unit VO ΔVO ΔVO IQ ΔIQ ΔVo/ΔT VN RR VD ISC IPK Output Voltage Line Regulation(4) Load Regulation(4) Quiescent Current Quiescent Current Change Temperature Coefficient of VD Output Noise Voltage Ripple Rejection Dropout Voltage Short-Circuit Current Peak Current TJ = +25°C IO = 5 mA to 1 A, PO ≤ 15 W, VI = -9 V to -21 V TJ = +25°C VI = -8 V to -25 V VI = -9 V to -13 V TJ = +25°C, IO = 5 mA to 1.5 A TJ = +25°C, IO = 250 mA to 750 mA TJ = +25°C IO = 5 mA to 1 A VI = -8 V to -25 V IO = 5 mA f = 10 Hz to 100 kHz, TA =+25°C f = 120 Hz, ΔVI = 10 V TJ = +25°C, IO = 1 A TJ = +25°C, VI = -35 V TJ = +25°C -5.75 -5.70 54 -6.00 -6.00 10 5 10 3 3 0.05 0.10 -0.5 130 60 2 300 2.2 -6.25 -6.30 V 120 60 120 60 6 0.50 1.30 mV mV mA mA mV/°C μV dB V mA A Note: 4. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.1 4 www.fair.


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