LTC3418 datasheet(2/20 Pages) LINER

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LTC3418

3418f

ORDER PART NUMBER

(Note 1)

Input Supply Voltage .................................. – 0.3V to 6V

ITH, RUN/SS, VFB Voltages ......................... – 0.3V to VIN

SYNC/MODE Voltages ............................... – 0.3V to VIN

TRACK Voltage .......................................... –0.3V to VIN

SW Voltage .................................. – 0.3V to (VIN + 0.3V)

Operating Ambient Temperature Range

(Note 2) .............................................. – 40°C to 85°C

Junction Temperature (Note 5) ............................. 125°C

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

LTC3418EUHF

TJMAX = 125°C, θJA = 34°C/W, θJC = 1°C/W

EXPOSED PAD (PIN 39) IS PGND AND MUST BE SOLDERED TO PCB

ABSOLUTE MAXIMUM RATINGS

PACKAGE/ORDER INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN

Input Voltage Range

2.25

5.5

VFB

Regulated Feedback Voltage

0°C ≤ TA ≤ 85°C

0.792

0.800

0.808

(Note 3)

●

0.784

0.800

0.816

IFB

Feedback Input Current

100

200

∆VFB

Reference Voltage Line Regulation

VIN = 2.5V to 5.5V (Note 3)

0.04

0.2

%/V

VLOADREG

Output Voltage Load Regulation

Measured in Servo Loop, VITH = 0.36V

●

0.02

0.2

Measured in Servo Loop, VITH = 0.84V

●

–0.02

–0.2

VTRACK

Tracking Voltage Offset

VTRACK = 0.4V

Tracking Voltage Range

0.8

ITRACK

TRACK Input Current

100

200

∆VPGOOD

Power Good Range

±7.5

±9%

RPGOOD

Power Good Resistance

100

150

Ω

Input DC Bias Current

(Note 4)

Active Current

VFB = 0.7V, VITH = 1V

380

450

µA

Shutdown

VRUN = 0V

0.03

1.5

µA

The

● indicates specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 3.3V. (Note 2)

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

13 14 15 16

TOP VIEW

UHF PACKAGE

38-LEAD (7mm × 5mm) PLASTIC QFN

17 18 19

38 37 36 35 34 33 32

PVIN

PGOOD

RUN/SS

SGND

PVIN

SYNC/MODE

ITH

VFB

SVIN

PVIN

ELECTRICAL CHARACTERISTICS

UH PART MARKING

3418

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