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LM2640 Arkusz danych(PDF) 5 Page - National Semiconductor (TI) |
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LM2640 Arkusz danych(HTML) 5 Page - National Semiconductor (TI) |
5 / 18 page Absolute Maximum Ratings (Notes 2, 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. IN, SW1, and SW2 −0.3 to 31V FB1 and FB2 −0.3 to 3V SD, ON/OFF1, ON/OFF2, 2NDFB/FPWM, SYNC, REF, SS1, SS2, COMP1, COMP2 and CSL1 −0.3 to (V LIN +0.3)V LIN −0.3 to 6V CSH1, CSH2, and CSL2 −0.3 to 7V Voltage from CBOOT1 to SW1 and from CBOOT2 to SW2 −0.3 to 5V Voltage from HDRV1 to SW1 and from HDRV2 to SW2 −0.3V Voltage from CBOOT1 to HDRV1 and from CBOOT2 HDRV2 −0.3V Junction Temp. +150˚C Power Dissipation (Note 3) 883 mW Ambient Storage Temp. (T J) −65 to +150˚C Soldering Dwell Time, Temp. (Note 4) Wave 4 sec, 260˚C Infrared 10 sec, 240˚C Vapor Phase 75 sec, 219˚C ESD Rating (Note 5) 2 kV Operating Ratings (Notes 1, 2) V IN 5.5 to 30V Junction Temp. (T J) 0 to +125˚C Electrical Characteristics Typicals and limits appearing in regular type apply for T J = 25˚C. Limits appearing in boldface type apply over the entire junc- tion temperature range for operation, 0 to +125˚C. Unless otherwise specified under the Parameter or Conditions columns, V IN = 10V, and V SD =VON/OFF1 =VON/OFF2 = 5V. (Note 2), (Note 6) and (Note 7) Symbol Parameter Conditions Typical Limit Units System V IN Input Supply Voltage Range 5.5 V(min) 30 V(max) V OUT Output Voltage Adjustment Range 2.2 V(min) 6.0 V(max) ∆V OUT/VOUT Load Regulation 0 mV ≤ (CSH1-CSL1) ≤ 80 mV, 0mV ≤ (CSH2-CSL2) ≤ 80 mV 0.5 % ∆V OUT/∆VIN Line Regulation 5.5V ≤ V IN ≤ 30V 0.002 %/V I IN Input Supply Current ON (Note 8) 0.6 mA V FB1 =VFB2 = 1.4V, 1 mA(max) V CSH1 = 5.2V, VCSL1 = 5V, V CSH2 = 3.5V, VCSL2 = 3.3V Standing By (Note 9) 80 µA V ON/OFF1 =VON/OFF2 =0V 150 µA(max) Shut Down (Note 10) 25 µA V SD =0V 60 µA(max) I SS1,ISS2 Soft-Start Source Current V SS1 =VSS2 = 1V 4.75 µA 2.0 µA(min) 7.0 µA(max) Soft-Start Sink Current 10 µA V PCL Positive Current Limit Voltage (Voltage from CSH1 to CSL1 and from CSH2 to CSL2) 100 mV 80 mV(min) 140 mV(max) −40˚C ≤ T J ≤ +125˚C 100 75 mV(min) V NCL Negative Current Limit Voltage (Voltage from CSH1 to CSL1 and from CSH2 to CSL2) V 2NDFB/FPWM = 0.8V −100 mV −80 mV(min) −140 mV(max) www.national.com 5 |
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