TPS62870 datasheet(9/66 Pages) TI2

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6.3 Recommended Operating Conditions (continued)

Over operating temperature range (unless otherwise noted)

MIN

NOM

MAX

UNIT

Inductance

110

330

fSW ≥ 2.25MHz and VOUT ≤ 1.675V

330

CIN

Input capacitance (per

pin)(2)

VIN

µF

COUT

Output capacitance(2)

(3)

CPAR

Parasitic capacitance

VSEL, FSEL

100

SYNC_OUT

Resistor tolerance

VSEL, FSEL

±2%

Operating junction

temperature

–40

125

°C

(1)

Whichever value is lower.

(2)

Effective capacitance.

(3)

The maximum recommended output capacitance depends on the specific operating conditions of an application. Output capacitance

values up to a few millifarad are typically possible, however.

6.4 Thermal Information

THERMAL METRIC(1)

TPS6287x

UNIT

RXS (JEDEC)

RXS (EVM)

16 PINS

RθJA

Junction-to-ambient thermal resistance

43.2

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

19.2

N/A

°C/W

RθJB

Junction-to-board thermal resistance

7.7

N/A

°C/W

ΨJT

Junction-to-top characterization parameter

0.5

1.5

°C/W

ΨJB

Junction-to-board characterization parameter

7.7

9.3

°C/W

RθJC(bot)

Junction-to-case (bottom) thermal resistance

6.3

N/A

°C/W

(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

note.

6.5 Electrical Characteristics

over operating junction temperature (TJ = –40°C to 125°C) and VIN = 2.7V to 6V. Typical values at VIN = 3.3V and TJ = 25°C

(unless otherwise noted).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SUPPLY

Supply current (VIN)

Operating

EN = high, IOUT = 0mA, V(SW) = 0V,

primary operation, device not switching,

TJ = 25°C

1.75

Standby

EN = low, V(SW) = 0V, TJ = 25°C

16.5

µA

VIT+

Positive-going UVLO threshold voltage

(VIN)

2.5

2.6

2.7

VIT–

Negative-going UVLO threshold voltage

(VIN)

2.4

2.5

2.6

Vhys

UVLO hysteresis voltage (VIN)

VIT+

Positive-going OVLO threshold voltage

(VIN)

6.1

6.3

6.5

VIT–

Negative-going OVLO threshold voltage

(VIN)

6.0

6.2

6.4

Vhys

OVLO hysteresis voltage (VIN)

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