IS31LT3354-STLS2 datasheet(11/12 Pages) ISSI

Part #	IS31LT3354-STLS2

Description	40V LED DRIVER WITH EXTERNAL SWITCH

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Manufacturer	ISSI [Integrated Silicon Solution, Inc]

Direct Link	http://www.issi.com

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11 / 12 page

IS31LT3354

Integrated Silicon Solution, Inc. – www.issi.com

Rev. A, 09/01/2011

11

CLASSIFICATION REFLOW PROFILES

Profile Feature

Pb-Free Assembly

Preheat & Soak

Temperature min (Tsmin)

Temperature max (Tsmax)

Time (Tsmin to Tsmax) (ts)

150°C

200°C

60-120 seconds

Average ramp-up rate (Tsmax to Tp)

3°C/second max.

Liquidous temperature (TL)

Time at liquidous (tL)

217°C

60-150 seconds

Peak package body temperature (Tp)*

Max 260°C

Time (tp)** within 5°C of the specified

classification temperature (Tc)

Max 30 seconds

Average ramp-down rate (Tp to Tsmax)

6°C/second max.

Time 25°C to peak temperature

8 minutes max.

Figure 19

Classification Profile

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