Ambient temperature

STMPS2141, STMPS2151, STMPS2161, STMPS2171

10/30

4

Ambient temperature

In Enable operating mode, an amount of power is dissipated as heat in the power switch due

Table 4.

SOT23-5L (160 °C/W)

Part number

Max current

5V

Power

dissipation

Temperature

difference

(Junction and

Ambient)

Maximum ambient

temperature

(at Junction

temperature 125 °C)

STMPS2141

0.50 A

130 m

Ω

32.5 mW

6.2

118.8

STMPS2151

STMPS2161

1.00 A

130 m

Ω

130.0 mW

24.8

100.2

STMPS2171

Table 5.

MSOP8 (220 °C/W)

Part number

Max

current

at 5 V

Power

dissipation

Temperature

difference

(Junction and

Ambient)

Maximum ambient

temperature

(at Junction temperature

125 °C)

STMPS2141

0.50 A

130 m

Ω

32.5 mW

7.2

117.8

STMPS2151

STMPS2161

1.00 A

130 m

Ω

130.0 mW

28.6

96.4

STMPS2171

Table 6.

SO-8 (160 °C/W)

Part number

Max current

at 5V

Power

dissipation

Temperature

difference (Junction

and Ambient)

Maximum ambient

temperature

(at Junction temperature

125 °C)

STMPS2141

0.50 A

130 m

Ω

32.5 m

Ω

5.2

124.8

STMPS2151

STMPS2161

1.00 A

130 m

Ω

130.0 m

Ω

20.8

104.2

STMPS2171