LT3473_15 datasheet(2/12 Pages) LINER

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LT3473/LT3473A

3473f

VIN Voltage ............................................................. 16V

SHDN Voltage .......................................................... 16V

SW Voltage ............................................................. 36V

PGOOD Voltage ...................................................... 36V

CAP Voltage ............................................................ 36V

OUT Voltage ........................................................... 36V

FB Voltage .............................................................. 10V

Consult LTC Marketing for parts specified with wider operating temperature ranges.

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

LT3473AEDE

ORDER PART

NUMBER

DE PART MARKING

3473A

TJMAX = 125°C, θJA = 43°C/ W

EXPOSED PAD (PIN 13) IS GND

MUST BE SOLDERED TO PCB (NOTE 3)

VIN

SHDN

PGOOD

CTRL

CAP

OUT

NB1

NE1

NB2

NE2

TOP VIEW

DE PACKAGE

12-LEAD (4mm × 3mm) PLASTIC DFN

CTRL Voltage .......................................................... 10V

NB1, NB2 Voltage ................................................... 36V

NE1, NE2 Voltage ................................................... 36V

Maximum Junction Temperature ......................... 125°C

Operating Temperature Range (Note 2) .. – 40°C to 85°C

Storage Temperature Range ................ – 65°C to 125°C

LT3473EDD

ORDER PART

NUMBER

DD PART MARKING

LBJJ

TOP VIEW

DD PACKAGE

8-LEAD (3mm × 3mm) PLASTIC DFN

CAP

OUT

CTRL

VIN

SHDN

PGOOD

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Operation Voltage

2.2

Maximum Operation Voltage

Supply Current

SHDN = 3V, Not Switching

100

µA

SHDN = 0V

0.1

µA

SHDN Voltage to Enable Chip

●

1.4

SHDN Voltage to Disable Chip

●

0.2

SHDN Pin Bias Current

µA

FB Voltage

●

1.235

1.25

1.26

FB Voltage Line Regulation

3V < VIN < 16V

0.01

%/V

FB Pin Bias Current

FB = 1.27V

CTRL to FB Offset

CTRL = 0.5V

CTRL Pin Bias Current

CTRL = 1V

FB Threshold for PGOOD

CTRL = 2V

1.15

CTRL = 0.5V

0.40

PGOOD Current Capacity

●

100

µA

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.

ELECTRICAL CHARACTERISTICS

TJMAX = 125°C, θJA = 43°C/ W

EXPOSED PAD (PIN 9) IS GND

MUST BE SOLDERED TO PCB (NOTE 3)

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