TPS2552DBVT datasheet(14/31 Pages) TI

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-CurrentLimitResistor-k

ILIM

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

15 25

35 45

65 75 85 95

195 205

235

165 175 185

135 145 155

105 115 125

215 225

IOS(min)

IOS(max)

IOS(nom)

1600

1700

1800

TPS2552

TPS2553, TPS2552-1, TPS2553-1

SLVS841C – NOVEMBER 2008 – REVISED SEPTEMBER 2009...................................................................................................................................... www.ti.com

While the maximum recommended value of RILIM is 232 k

Ω, there is one additional configuration that allows for

a lower current-limit threshold. The ILIM pin may be connected directly to IN to provide a 75 mA (typ) current-limit

threshold. Additional low-ESR ceramic capacitance may be necessary from IN to GND in this configuration to

prevent unwanted noise from coupling into the sensitive ILIM circuitry.

Figure 24. Current-Limit Threshold vs RILIM

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