LT3472_15 datasheet(2/12 Pages) LINER

2 / 12 page

LT3472

3472f

VIN, SHDN Voltage ................................................... 16V

SWP, SWN, VPOS Voltage ....................................... 36V

DN Voltage ............................................................ –36V

FBP, FBN, SSP, SSN Voltage ................................... 10V

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

Operating Temperature Range

Extended Commercial ......................... –40°C to 85°C

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

ORDER PART

NUMBER

DFN PART

MARKING

TJMAX = 125°C, θJA = 43°C/W, θJC = 3°C/W

EXPOSED PAD IS GND (PIN 11)

MUST BE SOLDERED TO PCB

LBGC

LT3472EDD

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 3V, SHDN = 3V unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Operation Voltage

2.2

Maximum Operation Voltage

Supply Current

SHDN = 3V, Not Switching

2.8

SHDN = 0V

0.1

µA

SHDN Voltage High

●

0.8

SHDN Voltage Low

●

0.3

SHDN Pin Bias Current

SHDN = 3V

µA

Positive Feedback Voltage

●

1.2

1.25

1.3

Negative Feedback Voltage

●

–5

Positive Feedback Voltage Line Regulation

0.01

%/V

Negative Feedback Voltage Line Regulation

0.008

mV/V

FBP Current

FBP = VFBP

●

24.5

25.3

µA

FBN Current

FBN = VFBN

●

24.5

25.3

µA

FBP to Start Negative Channel

1.02

1.1

1.18

Switching Frequency

0.9

1.1

1.4

MHz

Maximum Duty Cycle (Both Channels)

●

Positive Channel Switch Current Limit

●

250

350

Negative Channel Switch Current Limit

●

300

400

Positive Channel Switch VCESAT

ISWP = 200mA

245

Negative Channel Switch VCESAT

ISWN = 200mA

400

Switch Leakage Current (Both Channels)

VSW = 5V

0.01

µA

Schottky DP Forward Drop

IDP = 150mA

700

950

Schottky DN Forward Drop

IDN = 150mA

750

1000

Schottky Leakage Current (Both Channels)

VR = 36V

µA

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

TOP VIEW

DD PACKAGE

10-LEAD (3mm × 3mm) PLASTIC DFN

VPOS

SSP

FBP

SSN

FBN

SWP

VIN

SHDN

SWN

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LT3472E is guaranteed to meet specified performance from

0°C to 70°C. Specifications over the –40°C to 85°C operating range are

assured by design, characterization and correlation with statistical process

controls.

LT3472 数据表(PDF) 2 Page - Linear Technology

LT3472 数据表(HTML) 2 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12

数据表下载