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參數資料
型號: TPS54040DGQ
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩壓器
英文描述: 0.5 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10
封裝: PLASTIC, MSOP-10
文件頁數: 34/47頁
文件大小: 2435K
代理商: TPS54040DGQ
SLVS918 – MARCH 2009................................................................................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
TJ = –40°C to 150°C, VIN = 3.5 to 42V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK PIN)
Switching Frequency Range using
100
2500
kHz
RT mode
fSW
Switching frequency
RT = 200 k
450
581
720
kHz
Switching Frequency Range using
300
2200
kHz
CLK mode
Minimum CLK input pulse width
40
ns
RT/CLK high threshold
1.9
2.2
V
RT/CLK low threshold
0.5
0.7
V
RT/CLK falling edge to PH rising
Measured at 500 kHz with RT resistor in series
60
ns
edge delay
PLL lock in time
Measured at 500 kHz
100
s
SLOW START AND TRACKING (SS/TR)
Charge current
VSS/TR = 0.4 V
2
A
SS/TR-to-VSENSE matching
VSS/TR = 0.4 V
45
mV
SS/TR-to-reference crossover
98% nominal
1.0
V
SS/TR discharge current (overload)
VSENSE = 0 V, V(SS/TR) = 0.4 V
112
A
SS/TR discharge voltage
VSENSE = 0 V
54
mV
POWER GOOD (PWRGD PIN)
VSENSE falling
92%
VSENSE rising
94%
VVSENSE
VSENSE threshold
VSENSE rising
109%
VSENSE falling
107%
Hysteresis
VSENSE falling
2%
Output high leakage
VSENSE = VREF, V(PWRGD) = 5.5 V, 25°C
10
nA
On resistance
I(PWRGD) = 3 mA, VSENSE < 0.79 V
50
Minimum VIN for defined output
V(PWRGD) < 0.5 V, II(PWRGD) = 100
A
0.95
1.5
V
4
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS54040
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相關代理商/技術參數
參數描述
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