TPS65000TRTERQ1 datasheet(4/25 Pages) TI1

Part #	TPS65000TRTERQ1

Description	2.25-MHz Step-Down Converter With Dual LDOs and SVS

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Manufacturer	TI1 [Texas Instruments]

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TPS65000-Q1

SLVSC45A – AUGUST 2013 – REVISED OCTOBER 2013

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ELECTRICAL CHARACTERISTICS (continued)

Over full operating ambient temperature range, typical values are at TA = 25° C. Unless otherwise noted, specifications apply

for condition VIN = EN_LDOx = EN_DCDC = 3.6 V. External components L = 2.2 μH, COUT = 10 μF, CIN = 4.7 μF, (see the

parameter measurement information).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tStart

Start-up time

EN_DCDC to start of switching (10%)

250

μs

tRamp

VDCDC ramp-up time

VDCDC ramp from 10% to 90%

250

μs

Internal discharge resistance at

EN_DCDC low

RDIS

450

Ω

SW

LOW-DROPOUT REGULATORS

VI

Input voltage for LDOx (VINLDOx)

1.6

6

V

Adjustable output voltage, LDOx

VO

0.73

VINLDOx - VDO

V

(VLDOx)(4)

IO

Continuous-pass FET current

300

mA

2.3 V

≤ VINLDOx

340

700

ISC

Short-circuit current limit

mA

VINLDOx < 2.3 V

210

700

FB_LDOx pin current

0.1

μA

FB_LDOx voltage

Adjustable VOUT mode only

0.5

V

VINLDOx

≥ 2.3 V, IOUT = 250 mA

370

mV

VDO

Dropout voltage (5)

VINLDOx < 2.3 V, IOUT = 175 mA

370

mV

IO = 1 mA to 300 mA, VINLDOx = 2.3 V–6 V,

–3.5%

3.5%

VLDOx = 1.2 V

Output voltage accuracy (6)

IO = 1 mA to 175 mA, VINLDOx = 1.6 V–6 V,

–3.5%

3.5%

VLDOx = 1.2 V

IO = 1 mA to 300 mA, VINLDOx = 3.6 V

Load regulation

–1.5%

1.5%

VLDOx = 1.2 V

VINLDOx = 1.6 V–6 V, VLDOx = 1.2 V at

Line regulation

–0.5%

0.5%

IO = 1 mA

fNOISE ≤ 10 kHz, COUT ≥ 2.2 μF, VIN = 2.3 V,

PSRR

Power-supply rejection ratio

40

dB

VOUT = 1.3 V, IOUT = 10 mA

tRAMP

VLDOx ramp time

VLDOx ramp from 10% to 90%

200

μs

Internal discharge resistance at

RDIS

EN_LDOx low

450

Ω

VLDOx

TSD

Thermal shutdown

Increasing temperature

150

°C

Thermal shutdown hysteresis

Decreasing temperature

30

°C

(4)

Maximum output voltage VLDOx = 3.6 V.

(5)

VDO = VINLDOx – VLDOx, where VINLDOx = VLDOx(nom) – 100 mV

(6)

Output voltage specification does not include tolerance of external programming resistors.

4

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