MB39C602 datasheet(14/40 Pages) CYPRESS

No. de pieza	MB39C602

Descripción Electrónicos	High Power Factor LED Driver IC for LED Lighting

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Fabricante Electrónico	CYPRESS [Cypress Semiconductor]

Página de inicio	http://www.cypress.com

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14 / 40 page

Document Number: 002-08397 Rev. *A

Page 14 of 40

MB39C602

6. OTC Part

It is set on-time by connecting resistance (ROTC) with OTC pin.

As shown in following figure, the on-time can be controlled by connecting the collector of the Opto-Coupler through

resistor from OTC.

 OTC pin Control

The following figure shows how the on-time is programmed over the range of between 1.5

μs and 5.0 μs for either range of

programming resistors. On-time is related to the programmed resistor based on the following equations.

ROTC = tOTC × (2 × 10

10

[

Ω

] )

S

 On-time Setting Range

ROTC - Constant On-Time Resistance [kΩ]

Moreover, it can be shutted down by making the voltage of the OTC pin below "VOTC (Vth) (typ 1V)".

On-Time Modulation

Fault Timing

and Control

Fault

VGATE

OTC

ROTC

4

3V

IOTC

1V

Shutdown

and Restart

Thermal

Shutdown

UVLO

Fault Latch

Reset

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MB39C602 Datasheet(PDF) 14 Page - Cypress Semiconductor

MB39C602 Datasheet(HTML) 14 Page - Cypress Semiconductor

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