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LM3414SD Datasheet(PDF) 6 Page - National Semiconductor (TI) |
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LM3414SD Datasheet(HTML) 6 Page - National Semiconductor (TI) |
6 / 20 page Electrical Characteristics V IN = 24V unless otherwise indicated. Typical and limits appearing in plain type apply for T A=TJ= +25°C (Note 4). Limits appearing in boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are obtained under device test mode and guaranteed by design, test, or statistical analysis. LM3414 Symbol Parameter Conditions Min Typ Max Units SYSTEM PARAMETERS I IN-DIM-HIGH Operating Current 4.5V ≤ Vin ≤ 42V R IADJ = 3.125 kΩ V DIM = High 2.2 3.2 3.5 mA I IN-DIM-LOW Standby Current 4.5V ≤ Vin ≤ 42V R IADJ = 3.125 kΩ V DIM = Low 0.8 1.15 1.4 mA I LX-OFF LX Pin Current Main Switch Turned OFF V LX = VIN = 42V 6 µA LM3414HV Symbol Parameter Conditions Min Typ Max Units SYSTEM PARAMETERS I IN-DIM-HIGH Operating Current 4.5V ≤ Vin ≤ 65V R IADJ = 3.125 kΩ V DIM = High 2.2 3.3 3.6 mA I IN-DIM-LOW Standby Current 4.5V ≤ Vin ≤ 65V R IADJ = 3.125 kΩ V DIM = Low 0.8 1.2 1.45 mA I LX-OFF LX Pin Current Main Switch Turned OFF V LX = VIN= 65V 6.5 µA LM3414/LM3414HV Symbol Parameter Conditions Min Typ Max Units SYSTEM PARAMETERS I LED Average LED Current R IADJ = 3.125 kΩ T A = 25°C 0.97 1 1.03 A R IADJ = 3.125 kΩ T A = –40°C to 125°C 0.95 1 1.05 A V CC-UVLO Vcc UVLO Threshold V CC Decreasing 3.60 3.75 3.90 V V CC-UVLO-HYS Vcc UVLO Hysteresis 300 mV V IADJ IADJ Pin voltage 1.230 1.255 1.280 V V DIM DIM Pin Threshold V DIM Increasing 1.0 1.2 V V DIM-HYS DIM Pin Hysteresis 100 mV f SW Switching Frequency Range 250 500 1000 kHz f SW-TOL Switching Frequency Tolerance R FS = 40 kΩ 420 500 580 kHz t ON-MIN Minimum On-time 400 ns INTERNAL VOLTAGE REGULATOR V CC V CC Regulator Output Voltage (Note 5) C VCC = 1µF, No Load to IVCC = 2mA 4.7 5.4 6.0 V Vin = 4.5V, 2 mA Load 3.8 4.2 V MAIN SWITCH R LX Resistance Across LX and GND Main Switch Turned ON 1.8 Ω THERMAL PROTECTION T SD Thermal Shutdown Temperature T J Rising 170 °C www.national.com 6 |
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