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SiFirst_DS_5879_V1.0

SF5879

Pin Configuration

DEM

FB

1

2

3

GND

VDD

VDD

Drain

DIP8

4

8

7

6

5

CS

Drain

Ordering Information

Part Number

Top Mark

Package

Tape & Reel

SF5879DP

SF5879DP

DIP8

RoHs

Output Power Table

(1)

Part Number

230VAC ± 15%

(2)

85-265VAC

Adapter

(3)

Adapter

(3)

SF5879

18W

15W

Note 1. The Max. output power is limited by junction temperature

Note 2. 230VAC or 100/115VAC with doublers

Note 3. Typical continuous power in a non-ventilated enclosed adapter with sufficient drain pattern as a heat

sink at 50

Marking Information

S F 5 8 7 9 D P

Y WW

YWW: Year&Week code

Pin Description

Pin Num

Pin Name

I/O

Description

1

DEM

I

Transformer core demagnetization detection pin. This pin is also used for

output over voltage protection (OVP).

2

FB

I

Voltage feedback pin. The loop regulation is achieved by connecting a

photo-coupler to this pin. PWM duty cycle is generated by this pin voltage

and the current sense signal at Pin 4.

3

GND

P

IC ground pin.

4

CS

I

Current sense input pin.

5-6

Drain

P

High voltage power MOSFET drain connection. This pin is also used for

high voltage startup.

7-8

VDD

P

IC power supply pin.