Datasheet LTC3713 (Analog Devices) - 8

LTC3713
U U W FU CTIO AL DIAGRA S
RON VON VIN 2 8 ION 5 FCB 16 VIN1 4.7V + CIN 0.7V 2.4V 1µA + – 0.8V REF 0.8V 5V REG – + F BOOST 24 VVON tON = (10pF) I R ION TG CB S Q FCNT 23 M1 SW1 ON 20k 22 + + L1 SWITCH SENSE+ ICMP IREV LOGIC 21 D VOUT B – – INTVCC SHDN 17 + 1.4V C BG CVCC OUT OV 18 M2 VRNG PGND1 4 × 19 SENSE– 20 0.7V PGOOD 3 3.3µA R2 1 240k + 0.74V 1V Q2 Q4 UV Q6 – ITHB VFB1 9 Q3 Q1 R1 + Q5 SGND1 OV 7 + 0.8V – – 0.86V SS RUN – + SHDN 1.2µA ×4 EA + – – + 0.6V 6V 0.8V 6 I C TH C1 1 RUN/SS CSS R 0.6V C 3713 FD01 VIN2 15 R5 R6 40k 40k V 13 SW2 OUT2 + COMPARATOR A1 – R7 g DRIVER (EXTERNAL) m FF – A2 R Q Q3 VFB2 RC RAMP + S Q1 Q2 Σ FB2 12 GENERATOR x10 CC + R8 R3 0.15Ω (EXTERNAL) 30k 1.4MHz – OSCILLATOR R4 140k SHDN 11 SGND2 10 SHUTDOWN 14 PGND2 3713 FD02 3713fa 8