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LM3447MTE 数据表(PDF) 5 Page - Texas Instruments

部件名 LM3447MTE
功能描述  Phase Dimmable, Primary Side Power Regulated PFC Flyback Controller for LED Lighting
Download  25 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LM3447MTE 数据表(HTML) 5 Page - Texas Instruments

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13
Input Voltage
Sense
and
Feedforward
Control
1
5
FET
Turn-on
Logic
Angle
Detection Circuit
3
11
Internal
Regulators
VCC
UVLO / OVP
Thermal
Shutdown
10
UVLO
OVP
DISABLE
S
Q
Q
R
9
LEB
+
275mV
14
UVLO
13.5V
4.2V
Angle
Decoding
Circuit
4
Reference
Generator
2
Thermal
Foldback
1.75V
7.88k
+
6
7
PWM
Comparator
Error
Amplifier
Triggered
Ramp
Generator
2.5V
280mV
Fault
Timer
VREF
12
3.5V
1.75V
Valley Detection
Circuit
8
LEB
+
1.75V
AUX OVP
Comparator
Logic
and
Control
VAC
FF
FLT2
TSNS
INV
COMP
AUX
HOLD
FLT1
VCC
GATE
ISNS
BIAS
GND
ENHOLD
Hold Enable
OVP
ENHOLD
Hold Enable
ENHOLD
Hold Enable
LM3447
www.ti.com
SNOSC65 A – APRIL 2012 – REVISED MAY 2012
DEVICE INFORMATION
FUNCTIONAL BLOCK DIAGRAM
Copyright © 2012, Texas Instruments Incorporated
Submit Documentation Feedback
5
Product Folder Links: LM3447


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