Datasheet LTC3646, LTC3646-1 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | 40V, 1A Synchronous Step-Down Converter |
| Pages / Page | 28 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, SVIN/PVIN = 12V, fO = … |
| File Format / Size | PDF / 596 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, SVIN/PVIN = 12V, fO = 1MHz unless otherwise noted
Model Line for this Datasheet
- LTC3646EDE#PBF LTC3646EDE#TRPBF LTC3646EDE-1#PBF LTC3646EDE-1#TRPBF LTC3646EMSE#PBF LTC3646EMSE#TRPBF LTC3646EMSE-1#PBF LTC3646EMSE-1#TRPBF LTC3646HDE#PBF LTC3646HDE#TRPBF LTC3646HDE-1#PBF LTC3646HDE-1#TRPBF LTC3646HMSE#PBF LTC3646HMSE#TRPBF LTC3646HMSE-1#PBF LTC3646HMSE-1#TRPBF LTC3646IDE#PBF LTC3646IDE#TRPBF LTC3646IDE-1#PBF LTC3646IDE-1#TRPBF LTC3646IMSE#PBF LTC3646IMSE#TRPBF LTC3646IMSE-1#PBF LTC3646IMSE-1#TRPBF
Text Version of Document
LTC3646/LTC3646-1
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, SVIN/PVIN = 12V, fO = 1MHz unless otherwise noted. No Load Quiescent Current vs Bottom Switch Current Limit Temperature, Burst Mode Operation vs Temperature Load Regulation
200 1.5 1.6 VOUT = 5V 180 1.4 1.2 160 1.3 (%) 0.8 OUT/V 140 1.2 OUT 0.4 ∆V 120 TOM SWITCH CURRENT LIMIT (A) 1.1 0 NO LOAD QUIESCENT CURRENT (µA) BOT FORCED CONTINUOUS Burst Mode OPERATION 100 1.0 –0.4 –40 –20 0 20 40 60 80 100 120 140 –40 –20 0 20 40 60 80 100 120 140 0 0.2 0.4 0.6 0.8 1 TEMPERATURE (°C) TEMPERATURE (°C) LOAD CURRENT (A) 36461 G10 36461 G11 36461 G12
Output Voltage vs Time, Start-Up from Shutdown, Start-Up from Shutdown, Burst Mode Operation Burst Mode Operation Forced Continuous Mode
SW RUN RUN 10V/DIV 5V/DIV 5V/DIV IL IL IL 250mA/DIV 250mA/DIV 250mA/DIV VOUT VOUT VOUT 20mV/DIV 5V/DIV 5V/DIV AC-COUPLED V 2µs/DIV 36461 G13 IN = 12V ILOAD = 25mA 100µs/DIV 36461 G14 ILOAD = 25mA 100µs/DIV 36461 G15 VOUT = 5V ILOAD = 20mA
Load Step, IQ Shutdown vs Supply and Load Step, Burst Mode Operation Forced Continuous Operation Temperature
60 VIN = 40V I VIN = 12V LOAD ILOAD 1A/DIV 1A/DIV 50 40 IL IL 1A/DIV 1A/DIV 30 VOUT VOUT AC-COUPLED AC-COUPLED 20 100mV/DIV 100mV/DIV SHUTDOWN CURRENT (µA) 10 V 40µs/DIV 36461 G16 10µs/DIV 36461 G17 OUT = 1.2V VOUT = 1.2V 50mA to 1A STEP 50mA to 1A STEP fO = 2.25MHz fO = 2.25MHz 0 RCOMP = 200kΩ RCOMP = 200kΩ –40 –20 0 20 40 60 80 100 120 140 CCOMP = 33pF CCOMP = 33pF TEMPERATURE (°C) CF = 10pF CF = 10pF C 36461 G18 OUT = 15µF COUT = 15µF 36461fc 6 For more information www.linear.com/LTC3646 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, SVIN/PVIN = 12V, fO = 1MHz unless otherwise noted. No Load Quiescent Current vs Bottom Switch Current Limit Temperature, Burst Mode Operation vs Temperature Load Regulation
200 1.5 1.6 VOUT = 5V 180 1.4 1.2 160 1.3 (%) 0.8 OUT/V 140 1.2 OUT 0.4 ∆V 120 TOM SWITCH CURRENT LIMIT (A) 1.1 0 NO LOAD QUIESCENT CURRENT (µA) BOT FORCED CONTINUOUS Burst Mode OPERATION 100 1.0 –0.4 –40 –20 0 20 40 60 80 100 120 140 –40 –20 0 20 40 60 80 100 120 140 0 0.2 0.4 0.6 0.8 1 TEMPERATURE (°C) TEMPERATURE (°C) LOAD CURRENT (A) 36461 G10 36461 G11 36461 G12
Output Voltage vs Time, Start-Up from Shutdown, Start-Up from Shutdown, Burst Mode Operation Burst Mode Operation Forced Continuous Mode
SW RUN RUN 10V/DIV 5V/DIV 5V/DIV IL IL IL 250mA/DIV 250mA/DIV 250mA/DIV VOUT VOUT VOUT 20mV/DIV 5V/DIV 5V/DIV AC-COUPLED V 2µs/DIV 36461 G13 IN = 12V ILOAD = 25mA 100µs/DIV 36461 G14 ILOAD = 25mA 100µs/DIV 36461 G15 VOUT = 5V ILOAD = 20mA
Load Step, IQ Shutdown vs Supply and Load Step, Burst Mode Operation Forced Continuous Operation Temperature
60 VIN = 40V I VIN = 12V LOAD ILOAD 1A/DIV 1A/DIV 50 40 IL IL 1A/DIV 1A/DIV 30 VOUT VOUT AC-COUPLED AC-COUPLED 20 100mV/DIV 100mV/DIV SHUTDOWN CURRENT (µA) 10 V 40µs/DIV 36461 G16 10µs/DIV 36461 G17 OUT = 1.2V VOUT = 1.2V 50mA to 1A STEP 50mA to 1A STEP fO = 2.25MHz fO = 2.25MHz 0 RCOMP = 200kΩ RCOMP = 200kΩ –40 –20 0 20 40 60 80 100 120 140 CCOMP = 33pF CCOMP = 33pF TEMPERATURE (°C) CF = 10pF CF = 10pF C 36461 G18 OUT = 15µF COUT = 15µF 36461fc 6 For more information www.linear.com/LTC3646 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Typical Application Related Parts
