Datasheet LT3590 (Analog Devices) - 4
| Hersteller | Analog Devices |
| Beschreibung | 48V Buck Mode LED Driver in SC70 and 2mm × 2mm DFN |
| Seiten / Seite | 16 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS. Switch Saturation Voltage. Shutdown … |
| Dateiformat / Größe | PDF / 237 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. Switch Saturation Voltage. Shutdown Quiescent. (VCESAT). Schottky Forward Voltage Drop
Modelllinie für dieses Datenblatt
Textversion des Dokuments
LT3590
TYPICAL PERFORMANCE CHARACTERISTICS Switch Saturation Voltage Shutdown Quiescent (VCESAT) Schottky Forward Voltage Drop Current vs VIN
0.8 1.2 20 VCTRL = 0V 1.1 TA = 25°C 0.7 18 –40°C 1.0 –40°C 25°C 0.6 0.9 16 0.5 125°C 0.8 125°C 25°C 0.7 14 0.4 0.6 SHUTDOWN CURRENT (μA) SCHOTTKY FORWARD DROP (V) 12 SWITCH SATURATION VOLTAGE (V) 0.3 0.5 0.2 0.4 10 20 40 60 80 100 0 50 100 150 200 0 10 20 30 40 50 60 SWITCH CURRENT (mA) SCHOTTKY FORWARD CURRENT (mA) VIN (V) 3590 G01 3590 G02 3590 G03
Shutdown Quiescent Current vs Temperature Quiescent Current Schottky Leakage Current
20 600 2.0 VCTRL = 0V V V CTRL = 3.3V IN = 48V TA = 25°C 18 550 1.5 V 16 IN = 48V 500 1.0 14 VIN = 24V 450 SHUTDOWN CURRENT (μA) QUIESCENT CURRENT (μA) 0.5 12 SCHOTTKY LEAKAGE CURRENT (μA) VIN = 4.5V 10 400 0 –50 –25 0 25 50 75 100 125 0 10 20 30 40 50 60 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) VIN (V) TEMPERATURE (°C) 3590 G04 3590 G05 3590 G06
Switching Waveform Transient Response
CTRL 5V/DIV IL 20mA/DIV VSW 50V/DIV V IL SW 20V/DIV 50mA/DIV ILED 50mA/DIV 3590 G07 3590 G08 1μs/DIV 40μs/DIV V V IN = 48V IN = 48V I I LED = 50mA LED = 50mA 10 WHITE LEDs 10 BLUE LEDs L = 470μH (COILCRAFT) 3590f 4
TYPICAL PERFORMANCE CHARACTERISTICS Switch Saturation Voltage Shutdown Quiescent (VCESAT) Schottky Forward Voltage Drop Current vs VIN
0.8 1.2 20 VCTRL = 0V 1.1 TA = 25°C 0.7 18 –40°C 1.0 –40°C 25°C 0.6 0.9 16 0.5 125°C 0.8 125°C 25°C 0.7 14 0.4 0.6 SHUTDOWN CURRENT (μA) SCHOTTKY FORWARD DROP (V) 12 SWITCH SATURATION VOLTAGE (V) 0.3 0.5 0.2 0.4 10 20 40 60 80 100 0 50 100 150 200 0 10 20 30 40 50 60 SWITCH CURRENT (mA) SCHOTTKY FORWARD CURRENT (mA) VIN (V) 3590 G01 3590 G02 3590 G03
Shutdown Quiescent Current vs Temperature Quiescent Current Schottky Leakage Current
20 600 2.0 VCTRL = 0V V V CTRL = 3.3V IN = 48V TA = 25°C 18 550 1.5 V 16 IN = 48V 500 1.0 14 VIN = 24V 450 SHUTDOWN CURRENT (μA) QUIESCENT CURRENT (μA) 0.5 12 SCHOTTKY LEAKAGE CURRENT (μA) VIN = 4.5V 10 400 0 –50 –25 0 25 50 75 100 125 0 10 20 30 40 50 60 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) VIN (V) TEMPERATURE (°C) 3590 G04 3590 G05 3590 G06
Switching Waveform Transient Response
CTRL 5V/DIV IL 20mA/DIV VSW 50V/DIV V IL SW 20V/DIV 50mA/DIV ILED 50mA/DIV 3590 G07 3590 G08 1μs/DIV 40μs/DIV V V IN = 48V IN = 48V I I LED = 50mA LED = 50mA 10 WHITE LEDs 10 BLUE LEDs L = 470μH (COILCRAFT) 3590f 4