L6382D5TR データシートの表示（PDF） - STMicroelectronics

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L6382D5TR

Power management unit for microcontrolled ballast

STMicroelectronics 

Features

■ Integrated high-voltage start-up

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

MOSFETs

■ Fully integrated power management for all

operating modes

■ 5V microcontroller compatible

■ 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

Figure 1. Block diagram

L6382D5

Power management unit

for microcontrolled ballast

SO-20

Description

The L6382D5 is suitable for microcontrolled

electronic ballasts embedding a PFC stage and a

half-bridge stage. The L6382D5 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

L6382D5 reduces the bill of materials because

different tasks (regarding drivers and power

management) are performed by a single IC, which

improves the application reliability.

March 2007

Rev 3

1/21

www.st.com

21

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