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TPS65251RHAR Datasheet(PDF) 8 Page - Texas Instruments

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No. de Pieza. TPS65251RHAR
Descripción  4.5-V TO 18-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE BUCK SWITCHER WITH INTEGRATED FET
Descarga  31 Pages
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Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS65251RHAR Datasheet(HTML) 8 Page - Texas Instruments

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TPS65251
SLVSAA4B – JUNE 2010 – REVISED JANUARY 2011
www.ti.com
TYPICAL CHARACTERISTICS
Buck 1
TA = 25°C, VIN = 12 V, fSW = 1.1 MHz (unless otherwise noted)
Figure 1. Start-Up
Figure 2. Ripple
VOUT = 3.3 V, 2 A
VOUT = 3.3 V, 1.5 A, fSW = 800 kHz, 20 mV/div
Figure 3. Transient Load Response
Figure 4. Transient Supply Response
VOUT = 3.3 V, ∆I = 1 A to 1.5 A, 100 mV/div
VOUT = 3.3 V, ∆VIN = 8 V to 16.5 V, 20 mV/div
Figure 5. Efficiency
Figure 6. Efficiency
VOUT = 3.3 V, L= 4.7 µH, DCR = 28 mΩ
VOUT = 1.2 V, L = 4.7 µH, DCR = 28 mΩ
8
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