15

16

Exposed

Thermal Pad*

1

2

SW

SW

3

4

FREQ

PG

13

14

6

5

7

8

12

11

10

9

PVIN

AVIN

SS

PVIN

TPS62090, TPS62091, TPS62092, TPS62093

www.ti.com

SLVSAW2B – MARCH 2012 – REVISED APRIL 2014

Device Comparison Table

DEVICE NUMBER

OUTPUT VOLTAGE

TPS62090

Adjustable

TPS62091

3.3 V

TPS62092

2.5 V

TPS62093

1.8 V

6 Pin Configuration and Functions

16 PIN QFN

TOP VIEW

NOTE: *The exposed Thermal Pad is connected to AGND.

Pin Functions

PIN

I/O

DESCRIPTION

NAME

NO.

SW

1, 2

I

Switch pin of the power stage.

This pin selects the switching frequency of the device. FREQ=low sets the typical switching frequency to 2.8 MHz.

FREQ

3

I

FREQ=high sets the typical switching frequency to 1.4 MHz. This pin has an active pull down resistor of typically 400 k

Ω and

can be left floating for 2.8 MHz operation.

Power good open drain output. This pin is high impedance if the output voltage is within regulation. This pin is pulled low if

PG

4

O

the output is below its nominal value. The pull up resistor can not be connected to any voltage higher than the input voltage of

the device.

Feedback pin of the device. For the fixed output voltage versions this pin needs to be connected to GND for improved thermal

FB

5

performance. If, desired then this pin can also be left floating since it is internally connected with 400 k

Ω to GND for fixed

output voltage versions.

AGND

6

Analog ground.

CP

7

Internal charge pump flying capacitor. Connect a 10 nF capacitor between CP and CN.

CN

8

Internal charge pump flying capacitor. Connect a 10 nF capacitor between CP and CN.

Soft-start control pin. A capacitor is connected to this pin and sets the softstart time. Leaving this pin floating sets the

SS

9

I

minimum start-up time.

AVIN

10

Bias supply input voltage pin.

PVIN

11,12

Power supply input voltage pin.

Device enable. To enable the device this pin needs to be pulled high. Pulling this pin low disables the device. This pin has an

EN

13

active pull down resistor of typically 400 k

Ω.

PGND

14,15

Power ground connection.

VOS

16

Output voltage sense pin. This pin needs to be connected to the output voltage.

Thermal Pad

The exposed thermal pad is connected to AGND.

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Product Folder Links: TPS62090 TPS62091 TPS62092 TPS62093