L6382D datasheet(1/22 Pages) STMICROELECTRONICS

No de pièce	L6382D

Description	Power management unit for microcontrolled ballast

PDF	22 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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1 / 22 page

March 2007

Rev 6

1/22

22

L6382D

Power management unit

for microcontrolled ballast

Features

■ Integrated high-voltage start-up

■ 4 drivers for PFC, half-bridge & pre-heating

MOSFETs

■ 3.3V microcontroller compatible

■ Fully integrate power management for all

operating modes

■ Internal two point VCC regulator

■ Over-current protection with digital output

signal

■ Cross-conduction protection (interlocking)

■ Under voltage lock-out

■ Integrated bootstrap diode

Applications

■ Dimmable / non-dimmable ballast

Description

The L6382D is suitable for microcontrolled

electronic ballasts embedding a PFC stage and a

half-bridge stage. The L6382D includes 4

MOSFET driving stages (for the PFC, for the half

bridge, for the preheating MOSFET) plus a power

management unit (PMU) featuring also a

reference able to supply the microcontroller in any

condition.

Besides increasing the application efficiency, the

L6382D reduces the bill of materials because

different tasks (regarding drivers and power

management) are performed by a single IC, which

improves the application reliability.

SO-20

www.st.com

Figure 1.

Block diagram

µ

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