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LT4250 Datasheet(PDF) 30 Page - Linear Technology |
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LT4250 Datasheet(HTML) 30 Page - Linear Technology |
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30 / 34 page ![]() LTC4253/LTC4253A 30 425353afe APPLICATIONS INFORMATION Figure 14. Current Limit Behavior (All Waveforms Are Referenced to VEE) (14a) Analog Current Limit Fault (14b) Fast Current Limit Fault Figure 15. Soft-Start Timing (All Waveforms Are Referenced to VEE) (15a) Without External CSS (15b) With External CSS 12 12 34 TIMER GATE SENSE VOUT SS DRAIN PWRGD1 TIMER GATE SENSE VOUT DRAIN PWRGD1 4253 F14 CB TIMES-OUT VTMRH VACL VCB VACL VFCL VCB 5μA DRN DRN VDRNCL VTMRH 12 3 4 5 6 7 7a 8 9 10 11 END OF INITIAL TIMING CYCLE 12 3 4 5 6 7 8 9 10 11 END OF INITIAL TIMING CYCLE 4253 F15 TIMER GATE SENSE SS DRAIN PWRGD1 VTMRH VACL VCB VTMRL VTMRH VTMRL VGS(th) VGS(th) ACL + VOS) CB + VOS) OS 5μA 50μA 50μA 50μA VDRNCL VDRNL VIN – VGATEH DRN TIMER GATE SENSE SS DRAIN PWRGD1 VACL VCB ACL + VOS) CB + VOS) OS 5μA 50μA 50μA 50μA VDRNCL VDRNL VIN – VGATEH DRN |
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