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STR-W6765 Datasheet(PDF) 2 Page - Allegro MicroSystems

Part No. STR-W6765
Description  Quasi-Resonant Topology Primary Switching Regulators
Download  15 Pages
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Maker  ALLEGRO [Allegro MicroSystems]
Homepage  http://www.allegromicro.com
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STR-W6765 Datasheet(HTML) 2 Page - Allegro MicroSystems

 
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Quasi-Resonant Topology
Primary Switching Regulators
STR-W6765
2
Features and Benefits (continued)
Selection Guide
Part Number
Package
Packing
STR-W6765
TO-220
Bulk, 100 pieces
All performance characteristics given are typical values for circuit or
system baseline design only and are at the nominal operating voltage and
an ambient temperature of +25°C, unless otherwise stated.
▪ Various protections
⇒ Improved system-level reliability
▫ Pulse-by-pulse drain overcurrent limiting
▫ Overvoltage protection (bias winding voltage sensing),
with latch
▫ Overload protection with latch
▫ Maximum on-time limit
diodes during the start-up sequence. Various protections such as
overvoltage, overload, overcurrent, maximum on-time protections
and avalanche-energy-guaranteed MOSFET secure good system-
level reliability.
Applications include the following:
▪ Set Top Box
▪ LCD PC monitor, LCD TV
▪ Printer, Scanner
▪ SMPS power supplies
Description (continued)
Absolute Maximum Ratings at TA = 25°C
Parameter
Symbol
Terminal
Conditions
Rating
Unit
Drain Current1
IDpeak
1 - 3
Single pulse
11.2
A
Maximum Switching Current2
IDmax
1 - 3
TA = –20°C to 125°C
11.2
A
Single Pulse Avalanche Energy3
EAS
1 - 3
Single pulse, VDD = 99 V, L = 20 mH,
ILpeak = 5.8 A
300
mJ
Input Voltage for Controller (MIC)
VCC
4 - 3
35
V
SS/OLP Terminal Voltage
VSSOLP
5 - 3
–0.5 to 6.0
V
FB Terminal Inflow Current
IFB
6 - 3
10
mA
FB Terminal Voltage
VFB
6 - 3
IFB within the limits of IFB
–0.5 to 9.0
V
OCP/BD Terminal Voltage
VOCPBD
7 - 3
–1.5 to 5.0
V
MOSFET Power Dissipation4
PD1
1 - 3
With infinite heatsink
28.7
W
Without heatsink
1.3
W
Controller (MIC) Power Dissipation
PD2
4 - 3
VCC × ICC
0.8
W
Operating Internal Leadframe Temperature
TF
Refer to TOP
–20 to 115
°C
Operating Ambient Temperature
TOP
–20 to 115
°C
Storage Temperature
Tstg
–40 to 125
°C
Junction Temperature
TJ
150
°C
1
Refer to figure 2
2
IDMAX is the drain current determined by the drive voltage of the IC and the threshold voltage, Vth, of the MOSFET
3
Refer to figure 3
4
Refer to figure 5
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com


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