L6382D(2005) 查看數據表（PDF） - STMicroelectronics
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L6382D Datasheet PDF : 14 Pages
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L6382D
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 supplemen-
tary features like preheating of filaments supplied through isolated filaments in dimmable applications.
A precise reference voltage (+3.3V ±1%) able to provide up to 30mA is available to supply the µC in op-
erating mode. Instead, during start-up and save mode the current available at VREF is up to 10mA and it
is provided by the internal high voltage start-up generator.
The chip has been conceived with advanced power management logic to minimize power losses and in-
crease 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 exter-
nal charge pump) and optimizes the current consumption.
Figure 3. Pin Connection (Top View)
PFI 1
LSI 2
HSI 3
HEI 4
PFG 5
N.C. 6
TPR 7
GND 8
LSG 9
VCC 10
20 VREF
19 CSI
18 CSO
17 HEG
16 N.C.
15 HVSU
14 N.C.
13 OUT
12 HSG
11 BOOT
Figure 4. Typical System Block Diagram
PFC
CIRCUIT
AC
MAINS
HV
START-UP
CHARGE
PUMP
REGULATOR
BOOTSTRAP
HB
TL
DRIVER
PFC
3.3V
DRIVER
SUPPLY
PROTECTION
µC
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