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L6611D Datasheet(PDF) 6 Page - STMicroelectronics |
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L6611D Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 28 page L6611 6/28 ABSOLUTE MAXIMUM RATINGS THERMAL DATA (*) mounted on board Soft-start The IC provides an on-board 8ms soft-start, a quasi-monotonic ramp from 0V to 2.5V for the A error amplifier reference voltage, in order to avoid high current peaks in the primary circuit and output voltage overshoots at start-up. In fact, if this reference gets the nominal value as soon as the power-up occurs, the A E/A will go out of regulation and tend to sink much more current, thus forcing PWM to work with the maximum duty-cycle. Bounce or Latch-mode This option allows setting either latched-mode or auto restart after 1 second delay in case of undervoltage faults. Symbol Parameter Value Unit Vdd Supply voltage -0.5 to +7 V Voltage on PROG, PS-ON/Clock, DFAULT, VREF, and error amplifier pins -0.5 to Vdd+0.5 V Voltage on MFAULT, PW-OK, Dmon and positive UV, OV, OC, AC sense pins. -0.5 to +16 V Voltage on and -12V UV/OV sense pin -16 to +5 V Maximum current in ESD clamp diodes 10 mA TJ Operating Junction Temperature -25 to 150 °C TSTO Storage Temperature -50 to 150 °C TL Lead Temperature (soldering, 10 seconds) 300 °C Symbol Parameter DIP20 SO20 Unit Rth j-amb Max. Thermal Resistance junction-to-ambient (*) 70 120 °C/W FUNCTION DESCRIPTION (continued) Name Description |
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