DM0465RS View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

View to exact match

DM0465RS

Green Mode Fairchild Power Switch (FPS™)

Fairchild Semiconductor 

Pin Configuration

TO-220F-6L

6. Vstr

5. N.C.

4. Vfb

3. VCC

2. GND

1. Drain

Figure 3. Pin Configuration (Top View)

Pin Definitions

Pin # Name

1

Drain

2

GND

3

VCC

4

Vfb

5

N.C.

6

Vstr

Description

SenseFET drain. High-voltage power SenseFET drain connection.

Ground. This pin is the control ground and the SenseFET source.

Power Supply. This pin is the positive supply input, providing internal operating current

for both startup and steady-state operation.

Feedback. This pin is internally connected to the inverting input of the PWM comparator.

The collector of an opto-coupler is typically tied to this pin. For stable operation, a capac-

itor should be placed between this pin and GND. If the voltage of this pin reaches 6V, the

overload protection triggers, which shuts down the FPS.

No Connection.

Startup. This pin is connected directly, or through a resistor, to the high-voltage DC link.

At startup, the internal high-voltage current source supplies internal bias and charges the

external capacitor connected to the VCC pin. Once VCC reaches 12V, the internal current

source is disabled. It is not recommended to connect Vstr and Drain together.

© 2008 Fairchild Semiconductor Corporation

FSDM0465RS Rev. 1.0.1

4

www.fairchildsemi.com

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