ST1S40 datasheet(4/29 Pages) STMICROELECTRONICS

Il numero della parte	ST1S40

Spiegazioni elettronici	3 A DC step-down switching regulator

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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Maximum ratings

ST1S40

4/29

DocID17928 Rev 5

2

Maximum ratings

3

Thermal data

Table 2. Absolute maximum ratings

Symbol

Parameter

Value

Unit

VINSW Power input voltage

-0.3 to 20

V

VINA

Input voltage

-0.3 to 20

VEN

Enable voltage

-0.3 to VINA

VSW

Output switching voltage

-1 to VIN

-2 V to -1 V for 50 nsec

VFB

Feedback voltage

-0.3 to 2.5

IFB

FB current

-1 to +1

mA

PTOT

Power dissipation at TA < 60 °C

2.25 (HSOP-8/DFN4x4);

1.6 SO8-BW

W

TOP

Operating junction temperature range

-40 to 150

°C

Tstg

Storage temperature range

-55 to 150

°C

Table 3. Thermal data

Symbol

Parameter

Value

Unit

RthJA

Maximum thermal resistance junction-ambient(1)

1. Package mounted on the demonstration board.

VFQFPN

40

°C/W

HSOP-8

40

SO8-BW

55

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