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| 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)： | 23/41頁 |
| 文件大?。?/td> | 1149K |
| 代理商： | TPS5401DGQT |
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SLVSAB0 – DECEMBER 2010
THERMAL INFORMATION (continued)
TPS5401
THERMAL METRIC(1)
UNIT
MSOP (10 PINS)
qJB
Junction-to-board thermal resistance
44.6
°C/W
yJT
Junction-to-top characterization parameter
1.4
°C/W
yJB
Junction-to-board characterization parameter
22.8
°C/W
qJC(bottom)
Junction-to-case(bottom) thermal resistance
25.6
°C/W
ELECTRICAL CHARACTERISTICS
TJ = –40°C to 150°C, VIN = 3.5 V to 42 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE (VIN PIN)
VIN
Operating input voltage
3.5
42
V
Internal undervoltage lockout
No voltage hysteresis, rising and falling
2.5
V
threshold
Shutdown supply current
VEN = 0 V
1.3
4
mA
Operating: nonswitching supply
VVSENSE = 0.83 V, VIN = 12 V, 25°C
116
136
current
ENABLE AND UVLO (EN PIN)
Enable threshold voltage
No voltage hysteresis, rising and falling, 25°C
0.9
1.25
1.55
V
Enable threshold 50 mV
–3.8
Input current
mA
Enable threshold –50 mV
–0.9
Hysteresis current
–2.9
mA
VOLTAGE REFERENCE
Vref
Voltage reference
0.772
0.8
0.828
V
HIGH-SIDE MOSFET
VIN = 3.5 V, VBOOT – VPH = 3 V
300
On-resistance
m
VIN = 12 V, VBOOT – VPH = 6 V
200
410
ERROR AMPLIFIER
Input current
50
nA
Error amplifier transconductance
–2 mA < ICOMP < 2 mA, VCOMP = 1 V
97
mMhos
gmEA
–2 mA < ICOMP < 2 mA, VCOMP = 1 V,
Error amplifier transconductance
26
mMhos
during slow-start
VVSENSE = 0.4 V
Error amplifier dc gain
VVSENSE = 0.8 V
10,000
V/V
Error amplifier bandwidth
2700
kHz
Error amplifier source/sink
VCOMP = 1 V, 100 mV overdrive
±7
mA
COMP to switch current
gmPS
1.9
A/V
transconductance
CURRENT LIMIT
Current limit threshold
VIN = 12 V, TJ = 25°C
0.6
0.94
A
THERMAL SHUTDOWN
Thermal shutdown
182
°C
Copyright 2010, Texas Instruments Incorporated
3
Product Folder Link(s): TPS5401
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