L6585DE STMicroelectronics, L6585DE Datasheet - Page 20

• Manufacturer Part Number: L6585DE
• Description: IC CTRL PFC/BALLAST COMBO 20-SOI
• Manufacturer: STMicroelectronics
• Type: PFC/Ballast Controllerr

Specifications of L6585DE

• Frequency: 58.4 ~ 62 kHz
• Current - Supply: 7mA
• Current - Output: 600mA
• Voltage - Supply: 11 V ~ 16 V
• Operating Temperature: -40°C ~ 150°C
• Package / Case: SO-20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Ballast section
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The oscillator characteristic curves represent the half bridge frequency versus the
resistance R placed between RF pin and ground. During preheating R is equal to R
parallel with
value of the
The value of
values please refer to AN2870.
The right value of R during preheating and run mode can be found graphically considering
the curve related with the chosen capacitor and respectively
Figure 10. Oscillator characteristics
Some useful equations are given:
C
R
C
OSC
PRE
OSC
capacitor and are depicted in Figure 10.
whereas during Run mode R is equal to R
is measured between pin 1 (OSC) and 15 (GND); for other capacitor
T
T
PRE
IGN
≅
=
3
T
⋅
Tch
R
PRE
=
. 4
I
⋅
CH
C
63
IGN
C
d
+
R
d
C
d
⋅
ln
⎛
⎜
⎝
. 4
RUN
1
F
5 .
63
PRE
. Each curve is related to a
⎞
⎟
⎠
and F
RUN
“
L6585DE
RUN
in