L6382DTR STMicroelectronics, L6382DTR Datasheet - Page 3

• Manufacturer Part Number: L6382DTR
• Description: IC PWR MAGMNT MCU BALLAST SOIC20
• Manufacturer: STMicroelectronics
• Type: PFC/Ballast Controllerr

Specifications of L6382DTR

• Current - Supply: 2mA
• Voltage - Supply: 8.25 V ~ 17 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SOIC (7.5mm Width)
• Product: Charge Management
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Frequency: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

L6382D
1
Device description
Designed in High-voltage BCD Off-line technology, the L6382D is a PFC and ballast
controller provided with 4 inputs pin and a high voltage start-up generator conceived for
applications managed by a microcontroller providing the maximum flexibility. It allows the
designer to use the same ballast circuit 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 provide the control signals to their relevant drivers; in particular the L6382D embeds
one driver for the PFC pre-regulator stage, two drivers for the ballast half-bridge stage (High
Voltage, including also the bootstrap function) and the last one to provide supplementary
features like preheating of filaments supplied through isolated windings in dimmable
applications.
A precise reference voltage (+3.3V ±1%) able to provide up to 30mA is available to supply
the µC: this current is obtained thanks to the on-chip high voltage start-up generator that,
moreover, keeps the consumption before start-up below 150µA.
The chip has been designed with advanced power management logic to minimize power
losses and increase the application reliability.
In the half-bridge section, a patented integrated bootstrap section replaces the external
bootstrap diode.
The L6382D integrates also a function that regulates the IC supply voltage (without the need
of any external charge pump) and optimizes the current consumption.
Figure 2.
Typical system block diagram
Device description
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