HVLED807PF datasheet(7/36 Pages) STMICROELECTRONICS

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HVLED807PF

Pin description and connection diagrams

Doc ID 023464 Rev 5

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Pin description and connection diagrams

Figure 4.

Pin connection (top view)

2.1

Pin description

N.A.

SOURCE

DRAIN

GND

ILED

DMG

COMP

VCC

DRAIN

N.A.

N.C.

DRAIN

AM13210v1

Table 2.

Pin description

Name

Function

SOURCE

Source connection of the internal power section.

2CS

Current sense input.

Connect this pin to the SOURCE pin (through an R1 resistor) to sense the

current flowing in the MOSFET through an RSENSE resistor connected to GND.

The CS pin is also connected through dedicated ROS, RPF resistors to the input

and auxiliary voltage, in order to modulate the input current flowing in the

MOSFET according to the input voltage and therefore achieving a high power

factor. See dedicated section for more details.

The resulting voltage is compared with the voltage on the ILED pin to determine

MOSFET turn-off. The pin is equipped with 250 ns blanking time after the gate-

drive output goes high for improved noise immunity. If a second comparison level

located at 1 V is exceeded, the IC is stopped and restarted after VCC has

dropped below 5 V.

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