ld7575ps Leadtrend Technology, ld7575ps Datasheet - Page 17

• Manufacturer Part Number: ld7575ps
• Description: Green-mode Pwm Controller With High-voltage Start-up Circuit
• Manufacturer: Leadtrend Technology

Revision History
Leadtrend Technology Corporation
LD7575-DS-04b November 2007
Continued…
Rev.
00
01
02
Date
07/21/’05
07/28/’05
10/24/’05
Change Notice
Original Specification.
1.
2.
3.
4.
5.
1.
2.
3.
4.
Page 2, Remove the unexpected code “skype.lnk” before the “ordering information”.
Page 4, Recommended operating condition, change the “min. supply voltage Vcc”
from 10V to 11V since the UVLO range is from 9V to 11V.
Page 9, Add the gate resistor on figure 15 and figure 16 to avoid misunderstanding.
Page 11, Add the description “Figure 17 shows its operation.” In the section of “OVP
on Vcc”.
Page 13, Add “Vin=264Vac” on the title.
Add DIP-8 Package
Add information of HV current limit resistor and gate-to-GND resistor
Correction on the block diagram
Correction on the description of Over Load Protection (OLP)
a.
b.
c.
d.
a.
b.
c.
a.
a.
www.leadtrend.com.tw
Page 1 --- modify the general description “The LD7575 is offered in both
SOP-8 and DIP-8 package.”.
Page 2 --- Add DIP-8 data on the “pin configuration” and “ordering
information”.
Page 4 --- Add DIP-8 data on the “absolute maximum rating”.
Page 15 --- Add DIP-8 package drawing
Page 1, 8 (figure13), 9 (figure15,16), 12, 13 --- Update the drawing, BOM and
schematics for such resistors.
Page 11, 12 --- Add the sections “Pull-Low Resistor on the Gate Pin of
MOSFET”, “Protection Resistor on the Hi-V Path” and figure 19~22.
Page 4 --- Add negative voltage limitation of HV pin on the “absolute maximum
rating”.
Page 3 --- Add flip-flop on the OVP loop to be matched with the OVP operation
and add the anti-floating resistor on the output.
Page 10 --- Original description “Whenever….30mS (when switching
frequency is 100KHz)”. Where the “100KHz” should be corrected to “65KHz”.
17
LD7575