Datasheet LT3473, LT3473A (Analog Devices) - 2
| Fabricante | Analog Devices |
| Descripción | Micropower 1A Boost Converter with Schottky and Output Disconnect |
| Páginas / Página | 12 / 2 — ABSOLUTE AXI U RATI GS (Note 1). PACKAGE/ORDER I FOR ATIO. ELECTRICAL … |
| Formato / tamaño de archivo | PDF / 276 Kb |
| Idioma del documento | Inglés |
ABSOLUTE AXI U RATI GS (Note 1). PACKAGE/ORDER I FOR ATIO. ELECTRICAL CHARACTERISTICS The
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LT3473/LT3473A
W W W U ABSOLUTE AXI U RATI GS (Note 1)
VIN Voltage ... 16V CTRL Voltage .. 10V SHDN Voltage .. 16V NB1, NB2 Voltage ... 36V SW Voltage ... 36V NE1, NE2 Voltage ... 36V PGOOD Voltage .. 36V Maximum Junction Temperature ... 125°C CAP Voltage .. 36V Operating Temperature Range (Note 2) .. – 40°C to 85°C OUT Voltage ... 36V Storage Temperature Range .. – 65°C to 125°C FB Voltage .. 10V
U W U PACKAGE/ORDER I FOR ATIO
ORDER PART TOP VIEW ORDER PART TOP VIEW NUMBER NUMBER CAP 1 12 SW CAP 1 8 SW OUT 2 11 VIN LT3473EDD LT3473AEDE OUT 2 7 VIN NB1 3 10 SHDN 9 13 CTRL 3 6 SHDN NE1 4 9 PGOOD FB 4 5 PGOOD NB2 5 8 CTRL NE2 6 7 FB DD PACKAGE DD PART MARKING DE PART MARKING 8-LEAD (3mm × 3mm) PLASTIC DFN DE PACKAGE 12-LEAD (4mm TJMAX = 125°C, θJA = 43°C/ W LBJJ × 3mm) PLASTIC DFN 3473A EXPOSED PAD (PIN 9) IS GND TJMAX = 125°C, θJA = 43°C/ W MUST BE SOLDERED TO PCB (NOTE 3) EXPOSED PAD (PIN 13) IS GND MUST BE SOLDERED TO PCB (NOTE 3) Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C. VIN = 3V, SHDN = 3V, CTRL = 2V, unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operation Voltage 2.2 V Maximum Operation Voltage 16 V Supply Current SHDN = 3V, Not Switching 100 µA SHDN = 0V 0.1 1 µA SHDN Voltage to Enable Chip ● 1.4 V SHDN Voltage to Disable Chip ● 0.2 V SHDN Pin Bias Current 2 µA FB Voltage ● 1.235 1.25 1.26 V FB Voltage Line Regulation 3V < VIN < 16V 0.01 %/V FB Pin Bias Current FB = 1.27V 20 nA CTRL to FB Offset CTRL = 0.5V 5 20 mV CTRL Pin Bias Current CTRL = 1V 50 nA FB Threshold for PGOOD CTRL = 2V 1.15 V CTRL = 0.5V 0.40 V PGOOD Current Capacity ● 100 µA 3473f 2
W W W U ABSOLUTE AXI U RATI GS (Note 1)
VIN Voltage ... 16V CTRL Voltage .. 10V SHDN Voltage .. 16V NB1, NB2 Voltage ... 36V SW Voltage ... 36V NE1, NE2 Voltage ... 36V PGOOD Voltage .. 36V Maximum Junction Temperature ... 125°C CAP Voltage .. 36V Operating Temperature Range (Note 2) .. – 40°C to 85°C OUT Voltage ... 36V Storage Temperature Range .. – 65°C to 125°C FB Voltage .. 10V
U W U PACKAGE/ORDER I FOR ATIO
ORDER PART TOP VIEW ORDER PART TOP VIEW NUMBER NUMBER CAP 1 12 SW CAP 1 8 SW OUT 2 11 VIN LT3473EDD LT3473AEDE OUT 2 7 VIN NB1 3 10 SHDN 9 13 CTRL 3 6 SHDN NE1 4 9 PGOOD FB 4 5 PGOOD NB2 5 8 CTRL NE2 6 7 FB DD PACKAGE DD PART MARKING DE PART MARKING 8-LEAD (3mm × 3mm) PLASTIC DFN DE PACKAGE 12-LEAD (4mm TJMAX = 125°C, θJA = 43°C/ W LBJJ × 3mm) PLASTIC DFN 3473A EXPOSED PAD (PIN 9) IS GND TJMAX = 125°C, θJA = 43°C/ W MUST BE SOLDERED TO PCB (NOTE 3) EXPOSED PAD (PIN 13) IS GND MUST BE SOLDERED TO PCB (NOTE 3) Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C. VIN = 3V, SHDN = 3V, CTRL = 2V, unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operation Voltage 2.2 V Maximum Operation Voltage 16 V Supply Current SHDN = 3V, Not Switching 100 µA SHDN = 0V 0.1 1 µA SHDN Voltage to Enable Chip ● 1.4 V SHDN Voltage to Disable Chip ● 0.2 V SHDN Pin Bias Current 2 µA FB Voltage ● 1.235 1.25 1.26 V FB Voltage Line Regulation 3V < VIN < 16V 0.01 %/V FB Pin Bias Current FB = 1.27V 20 nA CTRL to FB Offset CTRL = 0.5V 5 20 mV CTRL Pin Bias Current CTRL = 1V 50 nA FB Threshold for PGOOD CTRL = 2V 1.15 V CTRL = 0.5V 0.40 V PGOOD Current Capacity ● 100 µA 3473f 2