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LM3405 Datasheet(PDF) 6 Page - Texas Instruments

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Part # LM3405
Description  Constant Current Buck Regulator
PDF  29 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3405 Datasheet(HTML) 6 Page - Texas Instruments

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Output
Control
Logic
Current
Limit
Thermal
Shutdown
Corrective Ramp
Reset
Pulse
PWM
Comparator
Current Sense Amplifier
RSENSE
+
+
Internal
Regulator
and
Enable
Circuit
Oscillator
Driver
0.3:
Switch
Internal
Compensation
EN/DIM
GND
Error Amplifier
-
+
VREF
0.205V
+
-
ISENSE
+
-
+
-
0.328V
-
+
Over-current
Comparator
Error
Signal
Under-
voltage
Lockout
R1
D1
D2
BOOST
SW
FB
VIN
VIN
LED1
C4
C1
C2
L1
C3
OFF
ON
IF
VOUT
IL
LM3405
SNVS429B – OCTOBER 2006 – REVISED MAY 2013
www.ti.com
Block Diagram
Figure 13. Simplified Block Diagram
6
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Product Folder Links: LM3405



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