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L7924C Datasheet(PDF) 8 Page - STMicroelectronics |
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L7924C Datasheet(HTML) 8 Page - STMicroelectronics |
8 / 16 page L7900 SERIES 8/16 ELECTRICAL CHARACTERISTICS OF L7924C (refer to the test circuits, TJ = 0 to 125°C, VI = -33V, IO =500 mA, CI =2.2 µF, CO = 1 µF unless otherwise specified). (*) 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 cycle is used. APPLICATIONS INFORMATION Figure 1 : Fixed Output Regulator NOTE: 1. To specify an output voltage, substitute voltage value for "XX". 2. Required for stability. For value given, capacitor must be solid tantalum. If aluminium electrolytics are used, at least ten times value should be selected. C1 is required if regulator is located an appreciable distance from power supply filter. 3. To improve transient response. If large capacitors are used, a high current diode from input to output (1N4001 or similar) should be intro- duced to protect the device from momentary input short circuit. Symbol Parameter Test Conditions Min. Typ. Max. Unit VO Output Voltage TJ = 25°C -23 -24 -24.5 V VO Output Voltage IO =-5mAto -1A PO ≤ 15 W VI = -27 to -38 V -22.8 -24 -25.2 V ∆V O(*) Line Regulation VI = -27 to -38 V TJ = 25°C 480 mV VI = -30 to -36 V TJ = 25°C 240 ∆V O(*) Load Regulation IO =5mAto 1.5 A TJ = 25°C 480 mV IO = 250 to 750 mA TJ = 25°C 240 Id Quiescent Current TJ = 25°C 3 mA ∆I d Quiescent Current Change IO =5mAto 1 A 0.5 mA VI = -27 to -38 V 1 ∆V O/∆T Output Voltage Drift IO = 5 mA -1 mV/°C eN Output Noise Voltage B = 10Hz to 100KHz TJ = 25°C 400 µV SVR Supply Voltage Rejection ∆V I = 10 V f = 120Hz 54 60 dB Vd Dropout Voltage IO =1A TJ = 25°C ∆V O = 100 mV 1.1 V Isc Short Circuit Current 1.1 A |
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