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LM20144 データシート(PDF) 9 Page - Texas Instruments

部品番号 LM20144
部品情報  4A, PowerWise짰 Adjustable Frequency Synchronous Buck Regulator
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
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LM20144 データシート(HTML) 9 Page - Texas Instruments

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6.0A
+
-
COMP
CONTROL
LOGIC
CURRENT
LIMIT
OVERVOLTAGE
UNDERVOLTAGE
ERROR AMP
PWM COMPARATOR
SS/TRK
PGOOD
+
-
+2.7V
REGULATOR
PVIN
PVIN
THERMAL
PROTECTION
PGND
SW
AVIN
CURRENT SENSE
VCC
1.18V
UVLO
2.7V
AGND
OSCILLATOR
+
752 mV
864 mV
PG-L
PG-L
2.7V
5 PA
gm = 510 Pmho
800 mV
+
-
+
DISCHARGE
DISCHARGE
SLOPE COMP
DIODE
EMULATION
+
-
VREF
+
-
FB
EN
+
-
+
-
(50 Ps)
+
-
+
-
RT
PVIN
LM20144
www.ti.com
SNVS529F – OCTOBER 2007 – REVISED NOVEMBER 2011
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Unless otherwise specified: CIN = COUT = 100 µF, L = 1.0 µH (Coilcraft MSS1038), VIN = 5V, VOUT = 1.2V, RLOAD = 1.2Ω,
fSW = 1 MHz, TA = 25°C for efficiency curves, loop gain plots and waveforms, and TJ = 25°C for all others.
Short Circuit Input Current
PGOOD
vs.
vs.
VIN
IPGOOD
Figure 25.
Figure 26.
BLOCK DIAGRAM
Copyright © 2007–2011, Texas Instruments Incorporated
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メーカー部品番号データシート部品情報
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