Datasheet LT3640 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Dual Monolithic Buck Regulator with Power-On Reset and Watchdog Timer |
| Pages / Page | 24 / 5 — TA = 25°C, unless otherwise noted. HV Channel Efficiency. LV Channel … |
| File Format / Size | PDF / 523 Kb |
| Document Language | English |
TA = 25°C, unless otherwise noted. HV Channel Efficiency. LV Channel Efficiency. (2MHz, VOUT1 = 3.3V). (2MHz, VOUT1 = 5V)
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LT3640 Typical perForMance characTerisTics
TA = 25°C, unless otherwise noted. HV Channel Efficiency HV Channel Efficiency LV Channel Efficiency (2MHz, VOUT1 = 3.3V) (2MHz, VOUT1 = 5V) (2MHz, VOUT2 = 1.2V)
90 90 90 VIN = 12V 85 VIN = 12V 85 85 VIN = 24V V V IN = 16V IN = 16V VIN2 = 3.3V 80 80 80 V V IN = 24V IN2 = 5V EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 75 75 75 70 70 70 0 0.2 0.4 0.6 0.8 1.0 1.2 0 0.2 0.4 0.6 0.8 1.0 1.2 0 0.2 0.4 0.6 0.8 1.0 VOUT1 CURRENT (A) VOUT1 CURRENT (A) VOUT2 CURRENT (A) 3640 G01 3640 G02 3640 G03
LV Channel Efficiency (2MHz, VOUT2 = 1.8V) Quiescent Current vs VIN Quiescent Current vs Temperature
90 0.35 350 VIN2 = 3.3V 0.30 300 85 VIN2 = 5V 0.25 250 0.20 200 80 0.15 150 EFFICIENCY (%) 0.10 100 75 QUIESCENT CURRENT (mA) QUIESCENT CURRENT (µA) V IN V IN 0.05 50 70 0.00 0 0 0.2 0.4 0.6 0.8 1.0 0 10 20 30 40 –50 0 50 100 150 VOUT2 CURRENT (A) VIN VOLTAGE (V) TEMPERATURE (°C) 3640 G04 3640 G05 3640 G06
FB1 Voltage vs Temperature FB1 Voltage vs SS1 FB2 Voltage vs Temperature
1.40 1.4 0.70 1.35 1.2 0.65 1.30 REGULATION 1.0 1.25 REGULATION 0.8 0.60 TAGE (V) 1.20 TAGE (V) TAGE (V) RST1 THRESHOLD 0.6 RST2 THRESHOLD 1.15 0.55 FB1 VOL FB1 VOL FB2 VOL 0.4 1.10 0.50 1.05 0.2 1.00 0.0 0.45 –50 0 50 100 150 0 0.5 1.0 1.5 2.0 –50 0 50 100 150 TEMPERATURE (°C) SS1 VOLTAGE (V) TEMPERATURE (°C) 3640 G07 3640 G08 3640 G09 3640f Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Typical Application Related Parts
TA = 25°C, unless otherwise noted. HV Channel Efficiency HV Channel Efficiency LV Channel Efficiency (2MHz, VOUT1 = 3.3V) (2MHz, VOUT1 = 5V) (2MHz, VOUT2 = 1.2V)
90 90 90 VIN = 12V 85 VIN = 12V 85 85 VIN = 24V V V IN = 16V IN = 16V VIN2 = 3.3V 80 80 80 V V IN = 24V IN2 = 5V EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 75 75 75 70 70 70 0 0.2 0.4 0.6 0.8 1.0 1.2 0 0.2 0.4 0.6 0.8 1.0 1.2 0 0.2 0.4 0.6 0.8 1.0 VOUT1 CURRENT (A) VOUT1 CURRENT (A) VOUT2 CURRENT (A) 3640 G01 3640 G02 3640 G03
LV Channel Efficiency (2MHz, VOUT2 = 1.8V) Quiescent Current vs VIN Quiescent Current vs Temperature
90 0.35 350 VIN2 = 3.3V 0.30 300 85 VIN2 = 5V 0.25 250 0.20 200 80 0.15 150 EFFICIENCY (%) 0.10 100 75 QUIESCENT CURRENT (mA) QUIESCENT CURRENT (µA) V IN V IN 0.05 50 70 0.00 0 0 0.2 0.4 0.6 0.8 1.0 0 10 20 30 40 –50 0 50 100 150 VOUT2 CURRENT (A) VIN VOLTAGE (V) TEMPERATURE (°C) 3640 G04 3640 G05 3640 G06
FB1 Voltage vs Temperature FB1 Voltage vs SS1 FB2 Voltage vs Temperature
1.40 1.4 0.70 1.35 1.2 0.65 1.30 REGULATION 1.0 1.25 REGULATION 0.8 0.60 TAGE (V) 1.20 TAGE (V) TAGE (V) RST1 THRESHOLD 0.6 RST2 THRESHOLD 1.15 0.55 FB1 VOL FB1 VOL FB2 VOL 0.4 1.10 0.50 1.05 0.2 1.00 0.0 0.45 –50 0 50 100 150 0 0.5 1.0 1.5 2.0 –50 0 50 100 150 TEMPERATURE (°C) SS1 VOLTAGE (V) TEMPERATURE (°C) 3640 G07 3640 G08 3640 G09 3640f Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Typical Application Related Parts
