TPS76301DBVT datasheet(14/20 Pages) TI

14 / 20 page

TPS76301, TPS76316, TPS76318, TPS76325, TPS76327

TPS76328, TPS76330, TPS76333, TPS76338, TPS76350

LOW POWER 150mA LOW DROPOUT LINEAR REGULATORS

SLVS181H − DECEMBER 1998 − REVISED JANUARY 2004

www.ti.com

APPLICATION INFORMATION

OUT

GND

≤0.5 V

≥2 V

TPS76301

µF

OUTPUT

VOLTAGE

(V)

2.5

3.3

3.6

6.45

187

301

348

402

549

750

169

OUTPUT VOLTAGE

PROGRAMMING GUIDE

DIVIDER RESISTANCE

Ω)(1)

(1) 1% values shown.

CSR = 1

Ω

4.7

µF

Figure 21. TPS76301 Adjustable LDO Regulator Programming

power dissipation and junction temperature

Specified regulator operation is assured to a junction temperature of 125

°C; the maximum junction temperature allowable

to avoid damaging the device is 150

°C. This restriction limits the power dissipation the regulator can handle in any given

application. To ensure the junction temperature is within acceptable limits, calculate the maximum allowable dissipation,

PD(max), and the actual dissipation, PD, which must be less than or equal to PD(max).

The maximum-power-dissipation limit is determined using the following equation:

D(max) +

max

* T

RqJA

Where:

TJmax is the maximum allowable junction temperature

RθJA is the thermal resistance junction-to-ambient for the package, see the dissipation rating table.

TA is the ambient temperature.

The regulator dissipation is calculated using:

D +

I *

Power dissipation resulting from quiescent current is negligible.

TPS76301DBVT Datasheet(PDF) 14 Page - Texas Instruments

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