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L6382D

January 2005

1

FEATURES

HEATING MOSFETS

FOR ALL OPERATING MODES

DIGITAL OUTPUT SIGNAL

(INTERLOCKING)

2

APPLICATIONS

3

DESCRIPTION

Designed in High-voltage BCD Off-line technolo-

gy, the L6382D is provided with 4 input pins and a

high voltage start-up generator conceived for ap-

plications managed by a microcontroller.

It allows the designer to use the same ballast cir-

cuit for different lamp wattage/type by simply

changing the

µC software.

The digital input pins - able to receive signals up to

400KHz - are connected to level shifters that pro-

vide the control signals to their relevant drivers;

POWER MANAGEMENT UNIT FOR MICROCONTROLLED

BALLAST

Figure 2. Block Diagram

S

RQ

SHIFT

600V

LEVEL

3.3V

HSD

LSD

OCP

PFD

HED

BOOTSTRAP

S

R

Q

Q

Q

mP UVLO

ON

L

O

G

I

C

3.3V

SUPPLY

>600V

“ON”

“OFF”

IC BIAS

TPR

PSW

HVSU

TPR

BOOT

HSG

OUT

LSG

CSO

CSI

HEG

PFG

PFI

HEI

LSI

HSI

Vcc

GND

REF

DIM

HIGH

VOLTAGE

START-UP

GENERATOR

S

RQ

SHIFT

600V

LEVEL

3.3V

HSD

LSD

OCP

PFD

HED

BOOTSTRAP

S

R

Q

Q

Q

Q

Q

mP UVLO

ON

L

O

G

I

C

3.3V

SUPPLY

>600V

“ON”

“OFF”

IC BIAS

TPR

PSW

HVSU

TPR

BOOT

HSG

OUT

LSG

CSO

CSI

HEG

PFG

PFI

HEI

LSI

HSI

Vcc

GND

REF

DIM

HIGH

VOLTAGE

START-UP

GENERATOR

Rev. 2

Figure 1. Package

Table 1. Order Codes

Part Number

Package

L6382D

SO20 tube

L6382DTR

SO20 in Tape & Reel

SO20