LT3825EFE datasheet(2/32 Pages) LINER

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LT3825

3525fa

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

VCC to GND

Low Impedance Source ........................ –0.3V to 18V

Current Fed

(VCC has Internal 19.5V Clamp) ...........30mA into VCC

UVLO, SYNC Pin Voltage ........................... –0.3V to VCC

SENSE–, SENSE+ Pin Voltage...................... –0.5V, +0.5V

FB Pin Current........................................................±2mA

VC Pin Current....................................................... ±1mA

Operating Junction Temperature Range

(Notes 2, 3) .......................................... –40°C to 125°C

Storage Temperature Range.................. –65°C to 150°C

Lead Temperature (Soldering, 10 sec) .................. 300°C

(Note 1)

ELECTRICAL CHARACTERISTICS

The

l denotes the speciﬁcations which apply over the full operating temperature range, otherwise speciﬁcations are at TA = 25°C.

VCC = 14V; PG, SG Open; VC = 1.5V, VSENSE– = 0V; RCMP = 1k, RtON = 90k, RPGDLY = 27.4k, RENDLY = 90k, unless otherwise speciﬁed.

FE PACKAGE

16-LEAD PLASTIC TSSOP

TOP VIEW

VCC

tON

ENDLY

SYNC

SFST

OSC

PGDLY

RCMP

CCMP

SENSE+

SENSE–

UVLO

TJMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W

EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Power Supply

VCC Turn-On Voltage

14.0

15.3

16.0

VCC Turn-Off Voltage

●

9.7

VCC Hysteresis

VCC(ON) – VCC(OFF)

●

4.0

5.6

6.5

VCC Shunt Clamp

VUVLO = 0V, IVCC = 15mA

●

19.5

20.5

VCC Supply Current (Note 5) (ICC)VC = Open

●

6.4

VCC Start-Up Current

VCC = 10V

●

180

400

μA

Feedback Ampliﬁer

Feedback Regulation Voltage (VFB)

●

1.220

1.237

1.251

Feedback Pin Input Bias Current

RCMP Open

200

Feedback Ampliﬁer Transconductance

ΔIC = ±10μA

●

700

1000

1400

μmho

Feedback Ampliﬁer Source or Sink Current

●

μA

Feedback Ampliﬁer Clamp Voltage

VFB = 0.9V

VFB = 1.4V

2.56

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3825EFE#PBF

LT3825EFE#TRPBF

3825EFE

16-Lead Plastic 4.4mm TSSOP

–40°C to 125°C

LEAD BASED FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3825EFE

LT3825EFE#TR

3825EFE

16-Lead Plastic 4.4mm TSSOP

–40°C to 125°C

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

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel speciﬁcations, go to: http://www.linear.com/tapeandreel/

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