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NCP1077

High-Voltage Switcher for Low Power Offline SMPS

ON Semiconductor 

NCP1070, NCP1071, NCP1072, NCP1075, NCP1076, NCP1077

PIN CONNECTIONS

VCC 1

8 GND

VCC

1

2

7 GND

FB 2

4 GND

GND 3

FB 4

(Top View)

PDIP−7

5 DRAIN

DRAIN

3

(Top View)

SOT−223

Figure 1. Pin Connections

INDICATIVE MAXIMUM OUTPUT POWER

NCP1070 / 1071

RDS(on) − IIPK

22 W − 350 mA

NCP1072 / 1075

11 W − 450 mA

NCP1076 / 1077

4.7 W − 800 mA

230 Vac

14 W

19 W

25 W

85−265 Vac

7.75 W

10 W

15 W

NOTE: Informative values only, with Tamb = 50°C, FSW = 65 kHz, Self supply via Auxiliary winding and circuit mounted on minimum

copper area as recommended.

QUICK SELECTION TABLE

NCP1070

NCP1071

RDS(on) (W)

Ipeak (mA)

22

250

350

Freq (kHz) 65 100 130 65 100 130

*130 kHz on demand only

NCP1072

NCP1075

11

250

450

65 100 130* 65 100 130

NCP1076

NCP1077

4.7

650

800

65 100 130 65 100 130

Figure 2. Typical Application Example

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