TPS25940 datasheet(13/50 Pages) TI1

13 / 50 page

0.1

100

1000

10000

100000

100

Power Dissipation (W)

-40C

25C

85C

125C

C014

A = -40

A = 25

A = 85

A = 125

TPS25940-Q1

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SLVSDJ0C – MAY 2016 – REVISED JULY 2018

Product Folder Links: TPS25940-Q1

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Typical Characteristics (continued)

Conditions are –40°C

≤ TA = TJ ≤ 125°C, V(IN) = 12 V, V(EN/UVLO) = 2 V, V(OVP) = V(DEVSLP) = V(PGTH) = 0 V, R(ILIM) = 150 kΩ,

C(OUT) = 1 µF, C(dVdT) = OPEN, PGOOD = FLT = IMON = OPEN. (unless stated otherwise)

Taken on 2-Layer board, 2 oz.(0.08-mm thick) with GND plane

area: 14 cm2 (Top) and 20 cm2 (bottom)

Figure 31. Thermal Shutdown Time vs Power Dissipation

V(IN) = 4.5 V

Figure 32. Turn ON with Enable

V(IN) = 11 V

Figure 33. Turn ON and OFF with Enable

R(FLT)=100 kΩ

Figure 34. EN Turn ON Delay : EN

↑ to Output Ramp ↑

R(FLT)=100 kΩ

Figure 35. EN Turn OFF Delay : EN

↓ to Fault ↓

V(IN) = 12 V

RL = 12 Ω

R(FLT)=100 kΩ

Figure 36. OVP Turn OFF Delay: OVP

↑ to Fault ↓

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