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TPS62840

SLVSEC6D – JUNE 2019 – REVISED MARCH 2020

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Copyright © 2019–2020, Texas Instruments Incorporated

Electrical Characteristics (continued)

VIN = 3.6 V, TJ = –40°C to 125°C, STOP = GND, MODE = GND, typical values are at TJ = 25°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

(1)

This is the static current limit. It can be temporarily higher in applications due to internal propagation delay (see Switch Current Limit /

Short Circuit Protection section).

POWER SWITCHES

RDS(ON)

High-side MOSFET

on-resistance

(DLC, YBG package)

VIN = 3.6V, I = 200mA, TJ = -40°C to 85°C

430

600

mΩ

VIN = 5V, I = 200mA, TJ = -40°C to 85°C

340

465

Low-side MOSFET

on-resistance

(DLC, YBG package)

VIN = 3.6V, I = 200mA, TJ = -40°C to 85°C

170

240

mΩ

VIN = 5V, I = 200mA, TJ = -40°C to 85°C

135

180

High-side MOSFET

on-resistance

(DGR package)

VIN = 3.6V, I = 200mA, TJ = -40°C to 85°C

460

630

mΩ

VIN = 5V, I = 200mA, TJ = -40°C to 85°C

370

495

Low-side MOSFET

on-resistance

(DGR package)

VIN = 3.6V, I = 200mA, TJ = -40°C to 85°C

200

270

mΩ

VIN = 5V, I = 200mA, TJ = -40°C to 85°C

165

210

ILIMF_SS

Soft-start

switch current limit(1)

0.15

0.225

0.3

A

ILIMF

High-side MOSFET switch current limit(1)

1.0

1.2

1.4

A

Low-side MOSFET switch current limit

1.0

A

ILIMN

Negative current limit

533

mA

tI_LIM_DELAY

Current limit propagation delay

50

ns

ILKG_SW

Leakage current

into SW pin

VSW = 1.8V, TJ = -40°C to 85°C

10

nA

OUTPUT VOLTAGE DISCHARGE

IDISCHARGE_VOS

Output discharge current

EN = GND, sink current into VOS pin, over VIN

range

VOUT = 1.8V, TJ = -40°C to 85°C

16

35

44

mA

THERMAL PROTECTION

TSD

Thermal shutdown temperature

Rising junction temperature, PWM Mode

160

°C

Thermal shutdown hysteresis

5

°C

OUTPUT

VOUT

Output voltage accuracy

PWM Mode, IOUT = 0 mA, VOUT >= 1.8 V

-1.5

0

1.5

%

PWM Mode, IOUT = 0 mA, VOUT <= 1.55 V

-2

0

2

%

VOUT

DC output voltage

load regulation

PWM Mode

0

%/mA

DC output voltage

line regulation

PWM Mode

VOUT = 1.8V, IOUT = 200 mA, over VIN range

0

%/V

fSW

Switching frequency

VIN = 3.6V, VOUT = 1.8V, MODE = VIN

IOUT = 0mA

1.8

MHz

tSTARTUP_DELAY

Regulator start up delay time

VIN = 3.6V, from EN = low to high until device

starts switching

200

µs

tSTARTUP_DELAY

Regulator start up delay time

EN ramps with VIN, VIN 0 to 3.6V (< 100us), until

device starts switching

10

ms

tSS

Soft-start time

IOUT = 0mA

120

µs

tSS_ILIMF

Reduced current limit soft-start timeout

700

1200

µs