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| LM34927SD Datasheet, PDF (7/26 Pages) Texas Instruments – LM34927 Integrated Secondary Side Bias Regulator for Isolated DC-DC Converters | |||
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www.ti.com
Functional Block Diagram
VIN
UVLO
START-UP
REGULATOR
20 µA
1.225V
UVLO
SD
0.66V
SHUTDOWN
V UVLO
4.5V
VDD REG
BG REF
LM34927
SNVS799F â APRIL 2012 â REVISED DECEMBER 2013
LM34927
VCC
THERMAL
SHUTDOWN
BST
VIN
RON
ON/OFF
TIMERS
DISABLE
1.225V
FB
FEEDBACK
COT CONTROL
LOGIC
RTN
OVER-VOLTAGE
1.62V
CURRENT
LIMIT
ONE-SHOT
ILIM
COMPARATOR
+
-
VILIM
SW
Figure 12. Functional Block Diagram
Copyright © 2012â2013, Texas Instruments Incorporated
Product Folder Links: LM34927
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