P1014AP100G 데이터 시트보기 (PDF) - ON Semiconductor

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P1014AP100G

Self-Supplied Monolithic Switcher for Low Standby Power Offline SMPS

ON Semiconductor 

NCP1010, NCP1011, NCP1012, NCP1013, NCP1014

PIN FUNCTION DESCRIPTION

Pin No.

(SOT−223)

Pin No.

(PDIP−7)

Pin Name

Function

Description

1

1

VCC

Powers the Internal Circuitry This pin is connected to an external capacitor of typic-

ally 10 mF. The natural ripple superimposed on the

VCC participates to the frequency jittering. For im-

proved 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.

−

2

NC

−

−

−

3

GND

The IC Ground

−

2

4

FB

Feedback Signal Input

By connecting an optocoupler to this pin, the peak

current setpoint is adjusted accordingly to the output

power demand.

3

5

Drain

Drain Connection

The internal drain MOSFET connection.

−

−

−

−

−

−

7

GND

The IC Ground

−

4

8

GND

The IC Ground

−

VCC 1

VCC

Vclamp*

IVCC

I?

Startup Source

Iref = 7.4 mA −

Drain

IVCC

+

UVLO

Management

High when VCC t 3 V

S

R

Q

Rsense

250 ns

L.E.B.

NC 2

4V

EMI Jittering

GND 3

18 k

Error flag armed?

FB 4

Overload?

65, 100 or

130 kHz

Clock

Reset

Set Flip−Flop Q

DCmax = 65%

Reset

Driver

VCC

−

+

0.5 V

+

Startup Sequence -

Soft−Start Overload

Drain

*Vclamp = VCCOFF + 200 mV (8.7 V Typical)

Figure 2. Simplified Internal Circuit Architecture

8 GND

7 GND

5 Drain

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3

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