PM6600TR datasheet(6/43 Pages) STMICROELECTRONICS

6 / 43 page

Pin settings

PM6600

6/43

9SLOPE

Slope compensation setting. A resistor between the output of the boost

converter and this pin is needed to avoid sub-harmonic instability.

Refer to section 1.4 for details.

SGND

Signal ground. Supply return for the analog circuitry and the current

generators.

ROW1

Row driver output #1.

ROW2

Row driver output #2.

ROW3

Row driver output #3.

ROW4

Row driver output #4.

ROW5

Row driver output #5.

ROW6

Row driver output #6.

PGND

Power ground. Source of the internal power-MOSFET.

OVSEL

Over-voltage selection. Used to set the desired OV threshold by an external

divider. See Section 7.2 on page 24 for details.

Switching node. Drain of the internal power-MOSFET.

DIM

Dimming input. Used to externally set the brightness of the LEDs by using a

PWM signal.

Enable input. When low, the device is turned off. If tied high or left floating,

the device is turned on and a Soft-Start sequence takes place.

FAULT

Fault signal output. Open drain output. The pin goes low when a fault

condition is detected (see Section 9.1 on page 36 for details).

SYNC

Synchronization output. Used as external synchronization output.

Soft start. Connect a capacitor to SGND to set the desired Soft-Start

duration.

Table 2.

Pin functions (continued)

N°

Function

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