LT3750_15 datasheet(2/16 Pages) LINER

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LT3750

3750fa

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum VCC

●

2.8

Minimum VTRANS

●

2.5

VCC Quiescent Current

Not Switching, CHARGE = 5V

1.6

2.5

Not Switching, CHARGE = 0V

µA

VTRANS Quiescent Current

Not Switching, CHARGE = 5V

140

250

µA

Not Switching, CHARGE = 0V

µA

CHARGE Pin Current

CHARGE = 24V

µA

CHARGE = 5V

µA

CHARGE = 0V

µA

CHARGE Pin Enable Voltage

●

0.87

1.1

CHARGE Pin Disable Voltage

●

0.2

0.6

Minimum CHARGE Pin Low Time

High

→Low→High

µs

VOUT Comparator Trip Voltage

Measured RBG Pin

●

1.215

1.24

1.265

VOUT Comparator Overdrive

µs Pulse Width, Measured on RBG Pin

RBG Pin Bias Current

RBG = 1.2V

500

DCM Comparator Trip Voltage

Measured as VDRAIN – VTRANS, RDCM = 43k (Note 3)

●

536

Current Limit Comparator Trip Voltage

●

DONE Output Signal High

100k

Ω to 5V

4.9

DONE Output Signal Low

100k

Ω to 5V

0.1

0.2

DONE Pin Leakage Current

DONE = 2.5V

0.2

µA

NMOS Minimum On Time

0.6

µs

GATE Rise Time

GATE High Voltage

CGATE = 1nF, VCC = 5V

3.8

4.5

CGATE = 1nF, VCC = 24V

22.6

23.5

GATE Turn Off Propagation Delay

CGATE = 1nF

100

Order Options Tape and Reel: Add #TR

Lead Free: Add #PBF

Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking: http://www.linear.com/leadfree/

VCC, VTRANS, GATE, DONE, CHARGE ...................... 24V

RBG ....................................................................... 1.5V

SOURCE ................................................................... 1V

Current into RDCM Pin ........................................

±1mA

Current into RVOUT Pin ........................................ ±1mA

Current into DONE Pin .........................................

±1mA

Operating Temperature Range (Note 2) .. – 40

°C to 85°C

Storage Temperature Range ................ – 65

°C to 150°C

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

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

LT3750EMS

ORDER PART NUMBER

MS PART MARKING

LTBQD

TJMAX = 125°C, θJA = 120°C/ W

VTRANS

DONE

CHARGE

VCC

GND

RBG

RVOUT

RDCM

GATE

SOURCE

TOP VIEW

MS PACKAGE

10-LEAD PLASTIC MSOP

The

● denotes specifications which apply over the full operating

temperature range, otherwise specifications are TA = 25°C. VCC = VTRANS = 5V unless otherwise specified.

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LT3750E is guaranteed to meet performance specifications

from 0

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

temperature range are assured by design, characterization and correlation

with statistical process controls.

Note 3: Refer to Block Diagram for VDRAIN definition.

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