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LM2576TV Datasheet(PDF) 4 Page - HTC Korea TAEJIN Technology Co. |
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LM2576TV Datasheet(HTML) 4 Page - HTC Korea TAEJIN Technology Co. |
4 / 14 page 3.0A, 52kHz, Step-Down Switching Regulator LM2576 All Output Voltage Versions ㎂ TJ= 0 to +125℃ 47 - 58 % A mA ICL IL nA kHz V ㎂ 11 50 30 6.9 9 Min TYP 94 98 1.5 42 - -52 Max Duty Cycle ("0") [Note 5] DC mA - 7.5 - Output = -1.0V - 2 Feedback Bias Current (Vout=5.0V [Adjustable Version Only]) Ib 1.8 - ON/OFF Pin = 0V (Regulator ON), TJ=25℃ IIL - 0 5.0 ON/OFF Pin = 5.0V (Regulator OFF), TJ=25℃ IIH -15 30 ON/OFF Pin Input Current (Test Circuit Figure 15) 1 TJ= -40 to +125℃ - - 0.8 TJ=25℃ - 1.2 - Vout=Nominal Output Voltage VIH VIL - TJ= -40 to +125℃ 2.4 - TJ=25℃ 2.2 1.4 Vout=0V 400 ON/OFF Pin Logic Input Level (Test circuit Figure 15) TJ= -40 to +125℃ -- TJ=25℃ - 80 200 Standby Quiescent Current (ON/OFF Pin = 5.0V ("off")) ISTBY TJ= -40 to +125℃ -- TJ=25℃ -5 Quiescent Current [Note 6] IQ 6 Output = 0V - 0.8 Output Leakage Current [Note 6 and 7], TJ=25℃ TJ= -40 to +125℃ 3.5 5.8 Current Limit (Peak Current [Note 3 and 4]) TJ=25℃ 4.2 63 TJ= -40 to +125℃ -- Vsat TJ=25℃ - Saturation Voltage (Iout=3.0A [note 4]) TJ= -40 to +125℃ -- Fosc TJ= -40 to +125℃ Unit Max Characteristics Symbol HTC - 4 - TJ=25℃ - 25 100 200 Oscillator Frequency [Note 3] V TJ=25℃ V ELECTRICAL CHARACTERISTICS / Device Parameters (Unless otherwise specified, Vin = 12 V for the 3.3 V, 5.0 V, and Adjustable version, Vin = 25 V for the 12 V version, and Vin = 30 V for the 15 V version. ILoad = 500 mA. For typical values TJ = 25°C, for min/max values TJ is the operating junction temperature range that applies [Note 2], unless otherwise noted.) 3. The oscillator frequency reduces to approximately 18 kHz in the event of an output short or an overload which causes the regulated output voltage to drop approximately 40% from the nominal output voltage. This self protection feature lowers the average dissipation of the IC by lowering the minimum duty cycle from 5% down to approximately 2%. 4. Output (Pin 2) sourcing current. No diode, inductor or capacitor connected to output pin. 5. Feedback (Pin 4) removed from output and connected to 0 V. 6. Feedback (Pin 4) removed from output and connected to +12 V for the Adjustable, 3.3 V, and 5.0V ersions, and +25 V for the 12 V and15 V versions, to force the output transistor “off”. 7. Vin = 40 V. |
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