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LMR14020SSQDDARQ1 Datasheet(PDF) 6 Page - Texas Instruments

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No. de pieza LMR14020SSQDDARQ1
Descripción Electrónicos  SIMPLE SWITCHER짰 40 V, 2 A Step-Down Converter
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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LMR14020SSQDDARQ1 Datasheet(HTML) 6 Page - Texas Instruments

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LMR14020-Q1
SNVSAG4 – NOVEMBER 2015
www.ti.com
6.6 Switching Characteristics
Over the recommended operating junction temperature range of -40 °C to 125 °C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Switching frequency
RT = 11.5 kΩ
1758
1912
2066
fSW
kHz
Switching frequency range at SYNC mode
250
2300
FDITHER
Switching frequency dithering
Spread spectrum option, frequency
±6%
dithering over center frequency
VSYNC_HI
SYNC clock high level threshold
1.7
V
VSYNC_LO
SYNC clock low level threshold
0.5
TSYNC_MIN
Minimum SYNC input pulse width
Measured at 500 kHz, VSYNC_HI > 3 V,
30
ns
VSYNC_LO < 0.3 V
TLOCK_IN
PLL lock in time
Measured at 500 kHz
100
µs
TON_MIN
Minimum controllable on time
VIN = 12 V, BOOT to SW = 5.8 V, ILoad =
75
ns
1 A
DMAX
Maximum duty cycle
fSW = 200 kHz
97%
6
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