NX5P2553_15 datasheet(10/24 Pages) PHILIPS

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NX5P2553

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Product data sheet

Rev. 1 — 6 July 2015

10 of 24

NXP Semiconductors

NX5P2553

Precision adjustable current-limited power switch

12.5 Current limit graph

12.6 Thermal shutdown

13. Dynamic characteristics

Fig 8.

Typical overcurrent protection current versus external resistor value RILIM

RILIM (kΩ)

240

195

105

150

aaa-011075

1800

Iocp

(mA)

300

600

900

1200

1500

Table 11.

Thermal shutdown

VI(VIN) = VI(EN) and RFAULT = 10 k unless otherwise specified; voltages are referenced to GND (ground = 0 V); see Figure 11.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Tth(ots)

overtemperature shutdown

threshold temperature

in normal mode

155

C

in current limit mode

130

C

Tth(ots)hys

overtemperature shutdown

threshold temperature hysteresis

in normal mode

C

in current limit mode

C

Table 12.

Characteristics

At recommended operating conditions; VI(VIN) = VI(EN) and RFAULT = 10 k unless otherwise specified; voltages are referenced

to GND (ground = 0 V); see Figure 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, and

Figure 22.

Symbol

Parameter

Conditions

Min

Typ[1]

Max

Unit

tTLH

LOW to HIGH output transition

time

VOUT; VI(VIN) =5.5 V

1.2

1.5

VOUT; VI(VIN) =2.5 V

0.5

1.0

tTHL

HIGH to LOW output transition

time

VOUT; VI(VIN) = 5.5 V

0.2

0.5

VOUT; VI(VIN) = 2.5 V

0.2

0.5

ten

enable time

EN to VOUT;

VI(VIN) =5.5 V

[2] --3

tdis

disable time

EN to VOUT;

VI(VIN) =5.5 V

[3] --3

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