Datasheet LTC3708 (Analog Devices) - 10
| Fabricante | Analog Devices |
| Descripción | Fast 2-Phase, No RSENSE Buck Controller with Output Tracking |
| Páginas / Página | 34 / 10 — FUNCTIONAL DIAGRAM |
| Formato / tamaño de archivo | PDF / 667 Kb |
| Idioma del documento | Inglés |
FUNCTIONAL DIAGRAM
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LTC3708
FUNCTIONAL DIAGRAM
RIPLL CIPLL INTLPF FCB I CLOCK DETECTOR ON RON VIN + FROM CHANNEL 2 VCC TG 0.6V CIN REF EXTLPF ENABLE PHASE DETECTOR PHASE DETECTOR (PD1) CVCC (PD2) REPLL C BOOST EPLL TO CHANNEL 2 OST TG C OST B FCNT M1 t 0.7 R ON = (10pF) ON IION Q SW S L1 VOUT SWITCH SENSE+ D + 20k B + + LOGIC COUT ICMP IREV DRVCC – – SHDN BG CDRVCC OV M2 1.4V PGND VRNG SENSE– × 0.7V – 0.66V R2 OV 3.3µA + VFB – 1 R1 EA Q4 SGND 240k + – ITH UV C + C 0.54V RC PGOOD ENABLE TRACK >100µs VREF – 1.3V BLANKING Q1 Q2 0.6V Q3 + RUN FROM CHANNEL 2 SHDN OV AND UV COMPARATORS 1.2µA 6V DUPLICATE FOR SECOND CHANNEL CONTROLLER –+ 1.3V RUN/SS CSS NOTE: THE RUN/SS PIN ONLY CLAMPS 3708 FD VREF FOR PHASE 1 NOT PHASE 2. 3708fc 10 For more information www.linear.com/LTC3708 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Applications Information Package Description Typical Application Related Parts
FUNCTIONAL DIAGRAM
RIPLL CIPLL INTLPF FCB I CLOCK DETECTOR ON RON VIN + FROM CHANNEL 2 VCC TG 0.6V CIN REF EXTLPF ENABLE PHASE DETECTOR PHASE DETECTOR (PD1) CVCC (PD2) REPLL C BOOST EPLL TO CHANNEL 2 OST TG C OST B FCNT M1 t 0.7 R ON = (10pF) ON IION Q SW S L1 VOUT SWITCH SENSE+ D + 20k B + + LOGIC COUT ICMP IREV DRVCC – – SHDN BG CDRVCC OV M2 1.4V PGND VRNG SENSE– × 0.7V – 0.66V R2 OV 3.3µA + VFB – 1 R1 EA Q4 SGND 240k + – ITH UV C + C 0.54V RC PGOOD ENABLE TRACK >100µs VREF – 1.3V BLANKING Q1 Q2 0.6V Q3 + RUN FROM CHANNEL 2 SHDN OV AND UV COMPARATORS 1.2µA 6V DUPLICATE FOR SECOND CHANNEL CONTROLLER –+ 1.3V RUN/SS CSS NOTE: THE RUN/SS PIN ONLY CLAMPS 3708 FD VREF FOR PHASE 1 NOT PHASE 2. 3708fc 10 For more information www.linear.com/LTC3708 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Applications Information Package Description Typical Application Related Parts