Datasheet LT3641 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Dual Monolithic Buck Regulator with Power-On Reset and Watchdog Timer |
| Pages / Page | 28 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. HV … |
| File Format / Size | PDF / 452 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. HV Channel Effi ciency. LV Channel Effi ciency
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LT3641
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. HV Channel Effi ciency HV Channel Effi ciency LV Channel Effi ciency (2MHz, VOUT1 = 3.3V) (2MHz, VOUT1 = 5V) (2MHz, VOUT2 = 1.2V)
90 95 90 90 85 VIN = 12V 85 85 VIN = 16V VIN2 = 3.3V 80 80 80 V V IN = 24V IN2 = 5V EFFICIENCY (%) EFFICIENCY (%) 75 EFFICIENCY (%) 75 V 75 IN = 12V 70 VIN = 24V VIN = 36V VIN = 48V 70 65 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 1.4 1.6 1.8 0 0.2 0.4 0.6 0.8 1.0 VOUT1 CURRENT (A) VOUT1 CURRENT (A) VOUT2 CURRENT (A) 3641 G01 3641 G02 3641 G03
LV Channel Effi ciency (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) IN IN V V 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) 3641 G04 3641 G05 3641 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 0.60 0.8 TAGE (V) 1.20 TAGE (V) TAGE (V) RST1 THRESHOLD 0.6 RST2 THRESHOLD 0.55 1.15 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) 3641 G07 3641 G08 3641 G09 3641fa 5
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. HV Channel Effi ciency HV Channel Effi ciency LV Channel Effi ciency (2MHz, VOUT1 = 3.3V) (2MHz, VOUT1 = 5V) (2MHz, VOUT2 = 1.2V)
90 95 90 90 85 VIN = 12V 85 85 VIN = 16V VIN2 = 3.3V 80 80 80 V V IN = 24V IN2 = 5V EFFICIENCY (%) EFFICIENCY (%) 75 EFFICIENCY (%) 75 V 75 IN = 12V 70 VIN = 24V VIN = 36V VIN = 48V 70 65 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 1.4 1.6 1.8 0 0.2 0.4 0.6 0.8 1.0 VOUT1 CURRENT (A) VOUT1 CURRENT (A) VOUT2 CURRENT (A) 3641 G01 3641 G02 3641 G03
LV Channel Effi ciency (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) IN IN V V 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) 3641 G04 3641 G05 3641 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 0.60 0.8 TAGE (V) 1.20 TAGE (V) TAGE (V) RST1 THRESHOLD 0.6 RST2 THRESHOLD 0.55 1.15 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) 3641 G07 3641 G08 3641 G09 3641fa 5
