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LM65645 Datasheet(PDF) 13 Page - Texas Instruments

Part # LM65645
Description  LM656x5 High-Performance, 3V to 65V, Pin Compatible, 2.5A, 3.5A, 4.5A, Industrial, Low EMI, Synchronous Buck Converters
PDF  66 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM65645 Datasheet(HTML) 13 Page - Texas Instruments

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7.2 Functional Block Diagram
PG
PG
Comparators,
De-glitch
Filters, and
Logic
FB
MODE /
SYNC
PGND2
PGND1
SW2
VIN1
BST
HS and LS
Current
Control
Internal EA
+
–
+
HS Current
Sense
SLOPE
COMP
RAMP
BIAS
VCC
–
+
PWM
Comparator
CLK
Frequency
Foldback
TSD
CLK
Soft Start
System EN
LS ILIM
EN /
UVLO
LS Current
Comparator
LS Current
Sense
UVP / OVP
RT
SW1
PLL and
OSCILLATOR
MODE /
SYNC
Detect
LDO
VIN2
VCC
UVLO
OVLO
HS UVLO
SPREAD
SPECTRUM
CLKOUT
Drivers and Logic
FB Decoder
3.3V, 5V
ADJ
+
–
BIAS
Bandgap
System EN
VIN
UVLO
RRT Detect
+
ZX Current
Comparator
VREF
EN
UVLO
EN Control
System EN
www.ti.com
LM65625, LM65635, LM65645
SNVSCH3 – JUNE 2025
Copyright © 2025 Texas Instruments Incorporated
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13
Product Folder Links: LM65625 LM65635 LM65645



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