LED1642GW datasheet(8/42 Pages) STMICROELECTRONICS

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Thermal characteristics

LED1642GW

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DocID024395 Rev 6

Thermal characteristics

Electrical characteristics

VDD = 3.3 V, Tj = 25 °C, unless otherwise specified.

Table 3. Thermal characteristics

Symbol

Parameter

Value

Unit

Operative free-air temperature range(1)

-40 to +85

°C

TOPR

Operative junction temperature range

-40 to +125

TSTG

Storage ambient temperature range

-55 to +150

Rthj-amb

Thermal resistance junction-ambient

QFN-24(2)

°C/W

TSSOP24

TSSOP24EP(2)

37.5

QSOP-24

This data must be considered in adequate power dissipation conditions, the junction temperature must be maintained

below 125 °C.

The exposed pad should be soldered directly to the PCB to get the thermal benefits. The exposed pad can be attached to

a metal land electrically isolated or connected to ground.

Table 4. Electrical characteristics

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VDD

Supply voltage

5.5

VOUT

Output voltage

Out 0 - out 15

VIH

Input voltage

0.7 x VDD

-VDD

VIL

GND

0.3 x VDD

VOL

Serial data output voltage

(SDO)

VDD= 3 to 5.5 V

I = +/- 1 mA

0.4

VOH

VDD -0.4

IOleak

Output leakage current

VOUT = 19 V, all outputs OFF

0.5

µA

Vuvlo

UVLO threshold (rising)

2.7

2.9

UVLO threshold (falling)

2.2

2.3

Hyuvlo

UVLO hysteresis

400

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