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NCP1072

High-Voltage Switcher for Low Power Offline SMPS

ON Semiconductor 

NCP1070, NCP1071, NCP1072, NCP1075, NCP1076, NCP1077

ELECTRICAL CHARACTERISTICS

(For all NCP107X products except NCP1072P100BG: For typical values TJ = 25°C, for min/max values TJ = −40°C to +125°C, VCC = 8 V

unless otherwise noted)

(For NCP1072P100BG: For typical values TJ = 25°C, for min/max values TJ = −55°C (Note 7) to +125°C, VCC = 8 V unless otherwise noted)

Symbol

Rating

Pin

Min

Typ

Max

Unit

PROTECTIONS

VHV(EN) The drain pin voltage above which allows MOSFET operate, which is

5

72

91

110

V

detected after TSD, UVLO, SCP, or VCC OVP mode.

TEMPERATURE MANAGEMENT

TSD

Temperature shutdown (Guaranteed by design)

Hysteresis in shutdown (Guaranteed by design)

−

150

°C

−

50

°C

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

4. The final switch current is: IIPK(0) / (Vin/LP + Sa) x Vin/LP + Vin/LP x tprop, with Sa the built−in slope compensation, Vin the input voltage, LP

the primary inductor in a flyback, and tprop the propagation delay.

5. NCP1072 130 kHz on demand only.

6. Oscillator frequency is measured with disabled jittering.

7. For coldest temperature, QA sampling at −40°C in production and −55°C specification is Guaranteed by Characterization.

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