LMS3655 datasheet(8/49 Pages) TI1

Part #	LMS3655

Description	5.5-A, 36-V Synchronous, 400-kHz DC-DC Step-Down Converter

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Manufacturer	TI1 [Texas Instruments]

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8

LMS3655

SNAS744 – JULY 2017

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Electrical Characteristics (continued)

Limits apply over the recommended operating junction temperature range of –40°C to +150°C, unless otherwise noted.

Minimum and maximum limits are specified through test, design, or statistical correlation. Typical values represent the most

likely parametric norm at Tj = 25°C, and are provided for reference purposes only. Unless otherwise stated the following

conditions apply: VIN = 13.5 V.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IFB

Input current from FB to AGND

FB = 1 V

20

nA

VREF

Reference voltage

TJ = 25°C

0.993

1

1.007

V

TJ = –40°C to 125°C

0.99

1

1.01

RRESET

RDSON of RESEToutput

Pull FB pin low. Sink 1-mA at

RESET pin

50

120

Ω

VSYNC

VIH

1.5

V

VIL

0.4

VHYST

0.15

1

TSD

Thermal shutdown thresholds(2)

Rising

160

185

°C

Hysteresis

15

DMAX

Maximum switch duty cycle

Fsw = 400 kHz

96%

While in dropout(2)

98%

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