RT6208

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is a registered trademark of Richtek Technology Corporation.

www.richtek.com

DS6208-00

May

2015

2

Pin Configurations

(TOP VIEW)

SW

VIN

NC

ISET

GND

PGOOD

EN

FB

GND

2

3

4

5

6

7

8

9

FB GND EN

SW VIN ISET

4

2

3

5

6

5

3

4

6

8

2

7

SOP-8 (Exposed Pad)

SOT-23-6

SOT-23-8

Functional Pin Description

Pin No

Pin Name

Pin Function

SOP-8

(Exposed Pad)

SOT-23-6 SOT-23-8

1

6

4

SW

Switch Node. Connect The Switching Node To External

Inductor.

2

5

3

VIN

Input Supply Voltage. Must bypass with a suitably large

ceramic capacitor.

3

--

--

NC

No Internal Connection.

4

4

1

ISET

High-Side Peak Current Set Pin. A resistor from this pin to

GND sets the high-side peak current limit. Leave floating

for the maximum peak current, 225mA. Short this pin to

GND for the minimum peak current, 50mA. A 1

A current

is sourced out of this pin.

5

3

8

EN

Enable Control Input. A voltage on this pin above 1.25V

enables the converter into normal mode; forcing this pin

below 0.3V shuts down the IC, reducing quiescent current

to 3

A.

An internal 2

A current pulls up enable pin for automatic

startup.

6

1

7

FB

Feedback Voltage Input. This pin receives the feedback

voltage from a resistive divider connected across the

output.

7

--

6

PGOOD

Power Good Open Drain Output. Asserts low if output

voltage is low due to OTP, UVP, UVLO, EN shutdown or

during soft-start.

8,

9 (Exposed Pad)

2

2

GND

Power Ground. The exposed pad must be soldered to a

large PCB and connected to GND for maximum power

dissipation.

--

--

5

AGND

Analog Ground.