TPS6521825_V01 datasheet(32/109 Pages) TI1

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From any

1.8-V to 10-V supply

LS3_I

LS3_EN

LS3nPFO

LS3DIS

LS3_F

LS3ILIM[1:0]

IN_LS3

LS3

250

AUX

Port

VPORT

GND

0.1 …F

120 …F

LS2_I

LS2_EN

LS2nPFO

LS2DIS

LS2_F

5-V

Port

+5 V

GND

5-V boost

LS2ILIM[1:0]

IN_LS2

LS2

0.1 …F

250

120 …F

TPS6521825

SLDS260 – NOVEMBER 2019

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Detailed Description

5.3.1.7.2 Load Switch 2 (LS2)

LS2 is a reverse-blocking, 5 V, low-impedance switch. Load switch 2 provides four different current limit

values (100/200/500/1000 mA) that are selectable through LS2ILIM[1:0] bits. Overcurrent is reported

through the LS2_I interrupt.

LS2 has its own input-undervoltage protection which forces the switch OFF if the switch input voltage

(VIN_LS2) is <2.7 V. Similar to OTS, the LS2_F interrupt is set when the switch is held OFF by the local

UVLO function, and the switch recovers automatically when the input voltage rises above the UVLO

threshold.

Figure 5-12. Typical Application of Load Switch 2

5.3.1.7.3 Load Switch 3 (LS3)

LS3 is a non-reverse blocking, medium-voltage (< 10 V), low-impedance switch that can be used to

provide 1.8-V to 10-V power to an auxiliary port. LS3 has four selectable current limit values that are

selectable through LS3ILIM[1:0].

Figure 5-13. Typical Application of Load Switch 3

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