TPS62840DLC datasheet(5/45 Pages) TI2

5 / 45 page

TPS62840

www.ti.com

SLVSEC6D – JUNE 2019 – REVISED MARCH 2020

Product Folder Links: TPS62840

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(1)

For more information about the PowerPAD, see the PowerPAD™ Thermally Enhanced Package application report.

Pin Functions

I/O

DESCRIPTION

NAME

DLC

(SON-8)

DGR

(HVSSOP-8)

YBG

(WCSP-6)

VIN

PWR

VIN power supply pin. Connect the input capacitor close to this pin for best

noise and voltage spike suppression. A 4.7-µF ceramic capacitor is

required.

PWR

The switch pin is connected to the internal MOSFET switches. Connect the

inductor to this terminal.

GND

PWR

GND supply pin. Connect this pin close to the GND terminal of the input

and output capacitors.

VSET

Connecting a resistor to GND sets the output voltage when the converter is

enabled. For the TPS62849, connect this pin to GND.

VOS

Output voltage sense pin for the internal feedback divider network and

regulation loop. When the converter is disabled, this pin discharges VOUT by

an internal MOSFET. Connect this pin directly to the output capacitor with a

short trace.

Enable pin. A high level enables the device and a low level turns the device

off. The pin features an internal pulldown resistor, which is disabled once

the device has started up and the output voltage is regulated. The pulldown

resistor is activated again, once a low level has been detected.

STOP

n/a

STOP Switching pin. When this pin is logic high, the converter stops

switching in order to provide a quiet supply rail. The output is powered from

the charge available in the output capacitor. When this pin is logic low, the

device immediately resumes operation. The pin features an internal

pulldown resistor, which is disabled once a high level is detected at the

input. The pulldown resistor is activated again, once a low level has been

detected.

MODE

n/a

MODE pin. A low level enables Power-Save Mode operation with an

automatic transition between PFM and PWM modes. A high level forces the

converter to operated in PWM mode. This pin can be toggled during

operation. It must be terminated.

n/a

This pin is not connected internally. Do not connect this pin.

n/a

PWR

Exposed thermal pad(1). The PowerPAD must be connected to GND.

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