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LM5069 bảng dữ liệu(PDF) 4 Page - National Semiconductor (TI) |
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LM5069 bảng dữ liệu(HTML) 4 Page - National Semiconductor (TI) |
4 / 22 page Electrical Characteristics Limits in standard type are for T J = 25˚C only; limits in boldface type apply over the junction temperature (T J) range of -40˚C to +125˚C. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T J = 25˚C, and are provided for reference purposes only. Unless otherwise stated the following conditions apply: VIN = 48V. (Continued) Symbol Parameter Conditions Min. Typ. Max. Units Current Limit V CL Threshold voltage VIN-SENSE voltage 48.5 55 61.5 mV t CL Response time VIN-SENSE stepped from 0 mV to 80 mV 45 µs I SENSE SENSE input current Enabled, SENSE = OUT 23 µA Disabled, OUT = 0V 60 Circuit Breaker V CB Threshold voltage VIN - SENSE 80 105 130 mV t CB Response time VIN - SENSE stepped from 0 mV to 150 mV, time to GATE low, no load 0.44 1.2 µs Timer (TIMER pin) V TMRH Upper threshold 3.76 4 4.16 V V TMRL Lower threshold Restart cycles (LM5069-2) 1.187 1.25 1.313 V End of 8th cycle (LM5069-2) 0.3 V Re-enable Threshold (LM5069-1) 0.3 V I TIMER Insertion time current 3 5.5 8 µA Sink current, end of insertion time TIMER pin = 2V 1.0 1.5 2.0 mA Fault detection current 51 85 120 µA Fault sink current 1.25 2.5 3.75 µA DC FAULT Fault Restart Duty Cycle LM5069-2 only 0.5 % t FAULT Fault to GATE low delay TIMER pin reaches 4.0V 12 µs Power Good (PGD pin) PGD TH Threshold measured at SENSE-OUT Decreasing 0.67 1.25 1.85 V Increasing, relative to decreasing threshold 0.95 1.25 1.55 PGD VOL Output low voltage I SINK =2mA 60 150 mV PGD IOH Off leakage current V PGD = 80V 5 µA Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and conditions see the Electrical Characteristics. Note 2: The human body model is a 100 pF capacitor discharged through a 1.5 k Ω resistor into each pin. Note 3: OUT bias current (disabled) due to leakage current through an internal 1.0 M Ω resistance from SENSE to VOUT. Note 4: For detailed information on soldering plastic MSOP packages refer to the Packaging Databook available from National Semiconductor Corporation. Note 5: The GATE pin voltage is typically 12V above VIN when the LM5069 is enabled. Therefore the Absolute Maximum Ratings for VIN (100V) applies only when the LM5069 is disabled, or for a momentary surge to that voltage since the Absolute Maximum Rating for the GATE pin is also 100V. www.national.com 4 |
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Mô tả tương tự - LM5069 |
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