NX5P2553_15 datasheet(5/24 Pages) PHILIPS

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NX5P2553

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Product data sheet

Rev. 1 — 6 July 2015

5 of 24

NXP Semiconductors

NX5P2553

Precision adjustable current-limited power switch

8.6 FAULT output

The FAULT pin is an open-drain output that requires an external pull-up resistor. If any of

the protection circuits are activated, FAULT is set to LOW to indicate that a fault has

occurred. It returns to the high-impedance state automatically once the fault condition is

removed.

8.7 OverTemperature Protection (OTP)

If the device temperature exceeds 155

C when EN is set HIGH and the device is not in

current limit, OTP triggers. It disables the N-channel MOSFET and sets the FAULT pin to

LOW. Any transition on the EN pin has no effect. Once the device temperature decreases

below 125

C, the device returns to the defined state.

If the device temperature exceeds 130

C when EN is set HIGH and the device is in

current limit, OTP triggers. It disables the N-channel MOSFET and sets the FAULT pin to

LOW. Any transition on the EN pin has no effect. Once the device temperature decreases

below 118

C, the device returns to the defined state.

Limiting values

[1]

If the input current rating is observed, the minimum input voltage rating may be exceeded.

[2]

If the switch clamping current rating is observed, the minimum and maximum switch voltage ratings may be exceeded.

[3]

Internally limited.

[4]

The (absolute) maximum power dissipation depends on the junction temperature Tj. Higher power dissipation is allowed with lower

ambient temperatures. The conditions to determine the specified values are Tamb = 85 C and the use of a two layer PCB.

Table 5.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).

Symbol

Parameter

Conditions

Min

Max

Unit

input voltage

inputs EN and ILIM

[1]

0.35

+6.5

input VIN

[2]

0.35

+6.5

output voltage

output FAULT

[1]

0.35

VI(VIN)

output VOUT

[2]

0.35

+6.5

VSW

switch voltage

[2]

6.5

+6.5

IIK

input clamping current

input EN; VI(EN) < 0.35 V

50

input ILIM; VI(ILIM) < 0.35 V

50

Isource

source current

input ILIM

IOK

output clamping current

VO <0V

50

ISK

switch clamping current

input VIN; VI(VIN) < 0.35 V

50

output VOUT; VO(VOUT) < 0.35 V

50

ISW

switch current

VSW > 0.35 V

[3] -

1900

Tj(max)

maximum junction

temperature

40

+150

C

Tstg

storage temperature

65

+150

C

Ptot

total power dissipation

NX5P2553GV

[4] -

300

NX5P2553GU

[4] -

315

NX5P2553GU6

[4] -

340

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