參數(shù)資料
型號: TPS5401DGQT
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10
封裝: PLASTIC, MSOP-10
文件頁數(shù): 34/41頁
文件大?。?/td> 1149K
代理商: TPS5401DGQT
SLVSAB0 – DECEMBER 2010
www.ti.com
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
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK PIN)
Switching-frequency range using RT
100
2500
kHz
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
ms
SLOW-START AND TRACKING (SS/TR PIN)
Charge current
VSS/TR = 0.4 V
2
mA
SS/TR-to-VSENSE matching
VSS/TR = 0.4 V
45
mV
SS/TR-to-reference crossover
98% nominal
1
V
SS/TR discharge current (overload)
VVSENSE = 0 V, VSS/TR = 0.4 V
112
mA
SS/TR discharge voltage
VVSENSE = 0 V
54
mV
POWER GOOD (PWRGD PIN)
VVSENSE falling
92%
VSENSE low threshold
Vref
VVSENSE rising
94%
VVSENSE rising
109%
VSENSE high threshold
Vref
VVSENSE falling
107%
Hysteresis
VVSENSE falling
2%
Output-high leakage
VVSENSE = Vref, VPWRGD = 5.5 V, 25°C
10
nA
On-resistance
IPWRGD = 3 mA, VVSENSE < 0.77 V
50
Minimum VIN for defined output
VPWRGD < 0.5 V, IPWRGD = 100 mA
0.95
1.5
V
4
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TPS5401
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