Datasheet LT3753 (Analog Devices) - 9

LT3753
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. AOUT to OUT Delay (tAO) and OUT Extended Blanking Duration to AOUT Delay (tOA) vs Junction AOUT to SOUT Delay (tAS) vs Junction Temperature Temperature vs Junction Temperature
220 340 340 200 RTBLNK = 73.2k 320 tAO 320 RTAS = 73.2k 300 300 TION (ns) 180 t 280 R OA TAO = 73.2k 280 160 (ns) 260 260 CA 140 240 (ns) 240 AND t t AS 120 220 220 t AO tAO R 200 200 TAS = 44.2k 100 R t R TAO = 44.2k OA TBLNK = 14.7k 180 180 EXTENDED BLANKING DURA 80 160 160 60 140 140 –75 –50 –25 0 25 50 75 100 125 150 175 –75 –50 –25 0 25 50 75 100 125 150 175 –75 –50 –25 0 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) 3753 G18 3753 G19 3753 G20
SOUT (Fall) to OUT (Rise) Delay (tSO = tAO – tAS) vs Junction OUT (Fall) to SOUT (Rise) Delay OUT Maximum Duty Cycle Clamp Temperature (tOS) vs Junction Temperature (DVSEC) vs UVLO_VSEC
120 160 80 100 VIN = 12V RTAO = 73.2k, RTAS = 44.2k 70 RT = 24.9k (300kHz) 80 140 RIVSEC = 51.1k 60 RTOS = 44.2k 60 120 40 50 20 100 (ns) 0 (ns) × 100 (%) 40 t SO –20 t SO 80 RTOS = 14.7k VSEC 30 –40 ID 60 –60 20 –80 RTOS = 7.32k 40 10 –100 RTAO = 44.2k, RTAS = 73.2k –120 20 0 –75 –50 –25 0 25 50 75 100 125 150 175 –75 –50 –25 0 25 50 75 100 125 150 175 0 1.25 2.5 3.75 5 6.25 7.5 8.75 10 JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) UVLO_VSEC (V) 3753 G21 3753 G22 3753 G23
Required RIVSEC vs Switching Frequency (for DVSEC × 100 = 72.5%, OUT Pin Rise/Fall Times UVLO_VSEC = 1.25V) vs OUT Pin Load Capacitance
160 60 INTVCC = 12V 140 50 (k) 120 40 IVSEC 100 80 ALL TIMES (ns) 30 60 20 PROGRAMMED R 40 OUT PIN RISE/F 10 20 0 0 100 150 200 250 300 350 400 450 500 0 1 2 3 4 5 6 7 8 9 10 SWITCHING FREQUENCY (kHz) OUT PIN LOAD CAPACITANCE (nF) 3753 G24 3753 G25 Rev. B For more information www.analog.com 9 Document Outline Features Applications Typical Application Description Table of Contents Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Package Description Revision History Typical Application Related Parts