參數(shù)資料
型號： 1725I
廠商： Linear Technology Corporation
英文描述： General Purpose Isolated Flyback Controller
中文描述： 通用隔離反激式控制器
文件頁數(shù)： 7/28頁
文件大小： 241K
代理商： 1725I
7
LT1725
1725f
BLOCK DIAGRA
COMP
ENDLY
MINENAB
t
ON
I
AMP
FDBK
FB
OSCAP
OSC
MOSFET
DRIVER
UVLO
V
CC
3V
OUT
3V REG
(INTERNAL)
BIAS
V
C
SOFT-START
LOAD
COMPENSATION
I
SENSE
GATE
PGND
R
OCMP
SFST
R
CMPC
SGND
1725 BD
LOGIC
PIU
ENDLY (Pin 13):
Pin for external programming resistor to
set enable delay time. See Applications Information for
details.
t
ON
(Pin 14):
Pin for external programming resistor to set
switch minimum on time. See Applications Information
for details.
V
CC
(Pin 15):
Supply voltage for the LT1725. Bypass this
pin to ground with 1
μ
F or more.
GATE (Pin 16):
This is the gate drive to the external power
MOSFET switch and has large dynamic currents flowing
through it. Keep the trace to the MOSFET as short as
possible to minimize electromagnetic radiation and volt-
age spikes. A series resistance of 5
or more may help to
dampen ringing in less than ideal layouts.
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