參數(shù)資料
型號(hào): TPS54140QDRCRQ1
廠商: TEXAS INSTRUMENTS INC
元件分類(lèi): 穩(wěn)壓器
英文描述: SWITCHING REGULATOR, PDSO10
封裝: GREEN, PLASTIC, SON-10
文件頁(yè)數(shù): 34/50頁(yè)
文件大?。?/td> 1602K
代理商: TPS54140QDRCRQ1
SLVSA24B
– OCTOBER 2009 – REVISED MARCH 2011
ELECTRICAL CHARACTERISTICS (continued)
TJ = –40°C to 150°C, VIN = 3.5 V to 42 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
THERMAL SHUTDOWN
Thermal shutdown
182
°C
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK PIN)
Switching frequency range using RT
VIN = 12 V
100
2500
kHz
mode
fSW
Switching frequency
VIN = 12 V, RT = 200 k
450
581
720
kHz
Switching frequency range using
VIN = 12 V
300
2200
kHz
CLK mode
Minimum CLK pulse width
40
ns
RT/CLK high threshold
VIN = 12 V
1.9
2.2
V
RT/CLK low threshold
VIN = 12 V
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
μs
SLOW START AND TRACKING (SS/TR)
Charge current
VSS/TR = 0.4 V
2
μA
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
μA
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 μA
0.95
1.5
V
4
Copyright
2009–2011, Texas Instruments Incorporated
Product Folder Link(s): TPS54140-Q1
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