Datasheet LTC3810-5 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 60V Current Mode Synchronous Switching Regulator Controller |
| Pages / Page | 38 / 5 — Typical perForMance characTerisTics. Short-Circuit/. Load Transient … |
| File Format / Size | PDF / 544 Kb |
| Document Language | English |
Typical perForMance characTerisTics. Short-Circuit/. Load Transient Response. Start-Up. Fault Timeout Operation
Model Line for this Datasheet
Text Version of Document
LTC3810-5
Typical perForMance characTerisTics Short-Circuit/ Load Transient Response Start-Up Fault Timeout Operation
INTVCC V V OUT OUT 5V/DIV 10V/DIV 100mV/DIV INTV V CC OUT 5V/DIV SS/TRACK 4V/DIV VIN I 50V/DIV OUT IL 5A/DIV IL 5A/DIV 5A/DIV 38105 G01 38105 G02 38105 G03 V 50µs/DIV IN = 48V V 500µs/DIV V 10ms/DIV IN = 48V IN = 48V 0A TO 5A LOADSTEP ILOAD = 1A RSHORT = 0.1Ω FRONT PAGE CIRCUIT MODE/SYNC = 0V FRONT PAGE CIRCUIT FRONT PAGE CIRCUIT
Short-Circuit/ Foldback Operation Tracking Pulse Skip Mode Operation
VOUT 5V/DIV VOUT VOUT 5V/DIV SS/TRACK 100mV/DIV VFB SS/TRACK ITH 0.5V/DIV V 0.5V/DIV FB 0.5V/DIV VFB I 0.5V/DIV L IL 5A/DIV IL 2A/DIV 5A/DIV 38105 G04 38105 G05 V 200µs/DIV IN = 48V VIN = 48V 500µs/DIV VIN = 48V 20µs/DIV 38105 G06 FRONT PAGE CIRCUIT ILOAD = 1A IOUT = 100mA MODE/SYNC = 0V MODE/SYNC = INTVCC FRONT PAGE CIRCUIT FRONT PAGE CIRCUIT
Efficiency vs Input Voltage Efficiency vs Load Current Frequency vs Input Voltage
100 100 280 IOUT = 5A V 95 V IN = 36V IN = 12V VIN = 60V 270 90 90 I IOUT = 0A OUT = 0.5A 260 85 250 IOUT = 5A EFFICIENCY (%) 80 EFFICIENCY (%) 80 FREQUENCY (kHz) VOUT = 5V 240 V 75 OUT = 12V Si7850 MOSFETs Si7852 MOSFETs MODE/SYNC = INTVCC MODE/SYNC = 0V f = 250kHz f = 250kHz FRONT PAGE CIRCUIT 70 70 230 10 20 30 40 50 60 70 80 0 1 2 3 4 5 6 7 10 20 30 40 50 60 70 80 INPUT VOLTAGE (V) LOAD CURRENT (A) INPUT VOLTAGE (V) 38105 G07 38105 G08 38105 G09 38105fd 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
Typical perForMance characTerisTics Short-Circuit/ Load Transient Response Start-Up Fault Timeout Operation
INTVCC V V OUT OUT 5V/DIV 10V/DIV 100mV/DIV INTV V CC OUT 5V/DIV SS/TRACK 4V/DIV VIN I 50V/DIV OUT IL 5A/DIV IL 5A/DIV 5A/DIV 38105 G01 38105 G02 38105 G03 V 50µs/DIV IN = 48V V 500µs/DIV V 10ms/DIV IN = 48V IN = 48V 0A TO 5A LOADSTEP ILOAD = 1A RSHORT = 0.1Ω FRONT PAGE CIRCUIT MODE/SYNC = 0V FRONT PAGE CIRCUIT FRONT PAGE CIRCUIT
Short-Circuit/ Foldback Operation Tracking Pulse Skip Mode Operation
VOUT 5V/DIV VOUT VOUT 5V/DIV SS/TRACK 100mV/DIV VFB SS/TRACK ITH 0.5V/DIV V 0.5V/DIV FB 0.5V/DIV VFB I 0.5V/DIV L IL 5A/DIV IL 2A/DIV 5A/DIV 38105 G04 38105 G05 V 200µs/DIV IN = 48V VIN = 48V 500µs/DIV VIN = 48V 20µs/DIV 38105 G06 FRONT PAGE CIRCUIT ILOAD = 1A IOUT = 100mA MODE/SYNC = 0V MODE/SYNC = INTVCC FRONT PAGE CIRCUIT FRONT PAGE CIRCUIT
Efficiency vs Input Voltage Efficiency vs Load Current Frequency vs Input Voltage
100 100 280 IOUT = 5A V 95 V IN = 36V IN = 12V VIN = 60V 270 90 90 I IOUT = 0A OUT = 0.5A 260 85 250 IOUT = 5A EFFICIENCY (%) 80 EFFICIENCY (%) 80 FREQUENCY (kHz) VOUT = 5V 240 V 75 OUT = 12V Si7850 MOSFETs Si7852 MOSFETs MODE/SYNC = INTVCC MODE/SYNC = 0V f = 250kHz f = 250kHz FRONT PAGE CIRCUIT 70 70 230 10 20 30 40 50 60 70 80 0 1 2 3 4 5 6 7 10 20 30 40 50 60 70 80 INPUT VOLTAGE (V) LOAD CURRENT (A) INPUT VOLTAGE (V) 38105 G07 38105 G08 38105 G09 38105fd 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
