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TPS62042DRCR Fiches technique(PDF) 5 Page - Texas Instruments

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No de pièce TPS62042DRCR
Description  1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
Download  30 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS62042DRCR Fiches technique(HTML) 5 Page - Texas Instruments

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TPS62040
TPS62042, TPS62043
TPS62044, TPS62046
SLVS463B − JUNE 2003 − REVISED OCTOBER 2005
www.ti.com
5
FUNCTIONAL BLOCK DIAGRAM
FB
PGND
SW
VIN
EN
Undervoltage
Lockout
Bias supply
Control Logic
+
LoadComparator
1.25 MHz
Oscillator
Vref = 0.5 V
Driver
Shoot−thru
Logic
R1
R2
Soft
Start
+
+
Current limit Comparator
SkipComparator
Gm
Saw Tooth
Generator
V
I
+
Vcomp
S
R
+
Comp High
Comp Low
Comp Low 2
Comp High
Comp Low
Comp Low 2
+
Comparator
Compensation
Ref
Ref
PGND
VIN
GND
MODE
MODE
SW
For the Adjustable Version the FB Pin Is
Directly Connected to the Gm Amplifier


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