6 Pin Configuration and Functions

PG

SS/TR

VIN

SW

GND

5

4

6

7

8

9

1

2

3

PG

EN

VIN

SW

GND

5

4

6

7

8

9

1

2

3

bottom view

top view

FB

COMP/

FSET

EN

Figure 6-1. RWY Package 9 Pin (VQFN)

Table 6-1. Pin Functions

PIN

I/O

DESCRIPTION

NAME

NO.

EN

8

I

This pin is the enable pin of the device. Connect to logic low to disable the device. Pull high

to enable the device. Do not leave this pin unconnected.

FB

5

I

Voltage feedback input, connect the resistive output voltage divider to this pin. For the fixed

voltage versions, connect the FB pin directly to the output voltage.

GND

4

Ground pin

MODE/SYNC

1

I

The device runs in PFM/PWM mode when this pin is pulled low. If the pin is pulled high, the

device runs in forced PWM mode. Do not leave this pin unconnected. The mode pin can

also be used to synchronize the device to an external frequency. See the Section 7 for the

detailed specification of the digital signal applied to this pin for external synchronization.

COMP/FSET

7

I

Device compensation and frequency set input. A resistor from this pin to GND defines

the compensation of the control loop as well as the switching frequency if not externally

synchronized. If the pin is tied to GND or VIN, the switching frequency is set to 2.25 MHz.

Do not leave this pin unconnected.

PG

9

O

Open drain power good output. Low impedance when not "power good", high impedance

when "power good". This pin can be left open or be tied to GND when not used.

SS/TR

6

I

Soft-Start / Tracking pin. A capacitor connected from this pin to GND defines the rise time

for the internal reference voltage. The pin can also be used as an input for tracking and

sequencing - see the Soft Start / Tracking (SS/TR) section.

SW

3

This pin is the switch pin of the converter and is connected to the internal Power MOSFETs.

VIN

2

Power supply input. Connect the input capacitor as close as possible between pin VIN and

GND.

TPS62810-Q1, TPS62811-Q1, TPS62812-Q1, TPS62813-Q1

SLVSDU1J – AUGUST 2018 – REVISED MARCH 2023

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