PT5621

V1.0

3

ORDER INFORMATION

Valid Part Number

Package Type

Top Code

PT5621-D

16 Pins, DIP, 300MIL

PT5621-D

PT5621-S

16 Pins, SOP, 150MIL

PT5621-S

PIN CONFIGURATION

IN DESCRIPTION

Pin Name

Description

Pin No.

GND

Ground

1

CP

Preheat time and sweeping ignition control pin

2

RF

Internal reference current bias setting pin, The pin’s voltage reference is

fixed at 1.5V. It connects to an external resistor to determine the internal

current reference, typical value is 75K

3

ROSC

Oscillator connects to an external resistor to determine the oscillating

frequency

4

COSC

Oscillator connects to an external capacitor to determine the oscillating

frequency

5

CTR1, 2

Dimming level setting pin

The different output states of the CTR1& CTR2 make the voltage divider

consisting of external resistors output different voltage level to the DIM pin

and set different dimming level

6, 7

DIM

Dimming input Pin

8

IL

Lamp current sampling

9

DATA0

NC

This pin is shorted to GND

10

RIND

Protection input pin

11

DATA1, 2

The Lives sensing pins

12, 13

LO

Low-side gate driver output

14

VDD

Power supply, operating voltage is 13V

15

HO

High-side gate driver output

16