NCP1015 Просмотр технического описания (PDF) - ON Semiconductor

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NCP1015

Self-Supplied Monolithic Switcher for Low Standby Power Offline SMPS

ON Semiconductor 

NCP1015

Indicative Maximum Output Power from NCP1015

RDS(on) − Ip

230 Vac

11 W − 450 mA DSS

14 W

11 W − 450 mA Auxiliary Winding

19 W

1. Informative values only, with: Tamb = 50°C, circuit mounted on minimum copper area as recommended.

100 − 250 Vac

6.0 W

8.0 W

Vout

+

100−250 Vac

+

+

1

8

2

7

3

4

5

GND

Figure 1. Typical Application Example

PIN FUNCTION DESCRIPTION

Pin No.

SOT−223

PDIP−7

Pin Name

1

1

VCC

−

2

NC

−

3

GND

2

4

FB

3

5

DRAIN

−

−

−

−

7

GND

4

8

GND

Function

Powers the Internal Circuitry

−

The IC Ground

Feedback Signal Input

Drain Connection

−

The IC Ground

The IC Ground

Description

This pin is connected to an external capacitor of typically

10 mF. The natural ripple superimposed on the VCC

participates to the frequency jittering. For improved

standby performance, an auxiliary VCC can be connected

to Pin 1. The VCC also includes an active shunt which

serves as an opto fail−safe protection.

−

−

By connecting an optocoupler to this pin, the peak current

setpoint is adjusted accordingly to the output power

demand.

The internal drain MOSFET connection.

−

−

−

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