HVLED815PFTR Datasheet, PDF(7/36 Page) STMicroelectronics – Offline LED driver with primary-sensing, high power factor up to 15 W

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HVLED815PFTR Datasheet, PDF (7/36 Pages) STMicroelectronics – Offline LED driver with primary-sensing, high power factor up to 15 W

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HVLED815PF

Pin description and connection diagrams

Figure 4. Pin connection (top view)

2.1

SOURCE 11

CS 22

VCC 33

GND 44

ILED 55

DMG 66

COMP 77

N.A. 88

1166 DRAIN

1155 DRAIN

1144 DRAIN

1133 DRAIN

1122 N.C.

1111 N.A.

1100 N.A.

9 N.A.

AM13210v1

Pin description

Table 2. Pin description

N. Name

Function

1 SOURCE Source connection of the internal power section.

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.

Doc ID 023409 Rev 4

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