Datasheet LT8601 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 42V Triple Monolithic Synchronous Step-Down Regulator |
| Pages / Page | 26 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VIN = PVIN1 = PVIN2 = … |
| Revision | B |
| File Format / Size | PDF / 2.5 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25°C, VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V
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LT8601
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V and PVIN3 = 3.3V, unless otherwise noted. Channel 1 Efficiency vs Load Channel 2 Efficiency vs Load Channel 2 Efficiency vs Load VOUT1 = 8V, fSW = 2MHz VOUT2 = 3.3V, fSW = 2MHz VOUT2 = 3.3V, fSW = 1MHz
100 100 4.0 100 90 90 3.6 90 80 80 3.2 80 70 70 2.8 POWER LOSS (W) 70 60 60 2.4 Burst Mode OPERATION 60 50 50 PVIN2 = 5.5V 2.0 50 PV 40 IN2 = 12V 40 PV 1.6 40 EFFICIENCY (%) IN2 = 24V EFFICIENCY (%) EFFICIENCY (%) 30 30 1.2 30 Burst Mode OPERATION Burst Mode OPERATION 20 0.8 PV 20 20 IN1 = 12V PVIN2 = 5.5V PV 10 IN1 = 28V 10 0.4 PV 10 IN2 = 12V PVIN1 = 42V PVIN2 = 28V 0 0 0 0 0.0001 0.001 0.01 0.1 1 2 0 0.5 1 1.5 2 2.5 0.0001 0.001 0.01 0.1 1 3 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 8601 G01 8601 G02 8601 G03
LV Channel Efficiency vs Load LV Channel Efficiency vs Load VOUT3 = 1.8V, fSW = 1MHz VOUT3 = 1.2V,fSW = 2MHz Quiescent Current vs VIN
100 100 50 90 90 80 80 40 70 70 60 60 50 50 30 (µA) I Q 40 40 EFFICIENCY (%) EFFICIENCY (%) 30 30 Burst Mode OPERATION Burst Mode OPERATION 20 20 PV 20 IN3 = 2.6V PVIN3 = 2.6V PV 10 IN3 = 3.3V 10 PVIN3 = 3.3V PVIN3 = 5.5V PVIN3 = 5.5V 0 0 10 0.0001 0.001 0.01 0.1 1 3 0 0.4 0.8 1.2 1.6 2 5 10 15 20 25 30 35 40 45 LOAD CURRENT (A) LOAD CURRENT (A) VIN (V) 8601 G04 8601 G05 8601 G06
Channel 1 Peak Current Limit Channel 2 Peak Current Limit Channel 3 Peak Current Limit vs vs Duty Cycle Duty Cycle vs Duty Cycle Duty Cycle
3.0 5.0 4.0 2.7 4.5 3.5 2.4 4.0 3.0 2.1 3.5 2.5 TOP FET CURRENT LIMIT (A) 1.8 TOP FET CURRENT LIMIT (A) 3.0 TOP FET CURRENT LIMIT (A) 2.0 1.5 2.5 1.5 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 DUTY CYCLE (%) DUTY CYCLE (%) DUTY CYCLE (%) 8601 G09 8601 G07 8601 G08 Rev. B For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V and PVIN3 = 3.3V, unless otherwise noted. Channel 1 Efficiency vs Load Channel 2 Efficiency vs Load Channel 2 Efficiency vs Load VOUT1 = 8V, fSW = 2MHz VOUT2 = 3.3V, fSW = 2MHz VOUT2 = 3.3V, fSW = 1MHz
100 100 4.0 100 90 90 3.6 90 80 80 3.2 80 70 70 2.8 POWER LOSS (W) 70 60 60 2.4 Burst Mode OPERATION 60 50 50 PVIN2 = 5.5V 2.0 50 PV 40 IN2 = 12V 40 PV 1.6 40 EFFICIENCY (%) IN2 = 24V EFFICIENCY (%) EFFICIENCY (%) 30 30 1.2 30 Burst Mode OPERATION Burst Mode OPERATION 20 0.8 PV 20 20 IN1 = 12V PVIN2 = 5.5V PV 10 IN1 = 28V 10 0.4 PV 10 IN2 = 12V PVIN1 = 42V PVIN2 = 28V 0 0 0 0 0.0001 0.001 0.01 0.1 1 2 0 0.5 1 1.5 2 2.5 0.0001 0.001 0.01 0.1 1 3 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 8601 G01 8601 G02 8601 G03
LV Channel Efficiency vs Load LV Channel Efficiency vs Load VOUT3 = 1.8V, fSW = 1MHz VOUT3 = 1.2V,fSW = 2MHz Quiescent Current vs VIN
100 100 50 90 90 80 80 40 70 70 60 60 50 50 30 (µA) I Q 40 40 EFFICIENCY (%) EFFICIENCY (%) 30 30 Burst Mode OPERATION Burst Mode OPERATION 20 20 PV 20 IN3 = 2.6V PVIN3 = 2.6V PV 10 IN3 = 3.3V 10 PVIN3 = 3.3V PVIN3 = 5.5V PVIN3 = 5.5V 0 0 10 0.0001 0.001 0.01 0.1 1 3 0 0.4 0.8 1.2 1.6 2 5 10 15 20 25 30 35 40 45 LOAD CURRENT (A) LOAD CURRENT (A) VIN (V) 8601 G04 8601 G05 8601 G06
Channel 1 Peak Current Limit Channel 2 Peak Current Limit Channel 3 Peak Current Limit vs vs Duty Cycle Duty Cycle vs Duty Cycle Duty Cycle
3.0 5.0 4.0 2.7 4.5 3.5 2.4 4.0 3.0 2.1 3.5 2.5 TOP FET CURRENT LIMIT (A) 1.8 TOP FET CURRENT LIMIT (A) 3.0 TOP FET CURRENT LIMIT (A) 2.0 1.5 2.5 1.5 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 DUTY CYCLE (%) DUTY CYCLE (%) DUTY CYCLE (%) 8601 G09 8601 G07 8601 G08 Rev. B For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
