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參數(shù)資料
型號(hào): TPS54519RTER
廠(chǎng)商: TEXAS INSTRUMENTS INC
元件分類(lèi): 穩(wěn)壓器
英文描述: 8 A SWITCHING REGULATOR, 2000 kHz SWITCHING FREQ-MAX, PQCC16
封裝: 3 X 3 MM, GREEN, PLASTIC, WQFN-16
文件頁(yè)數(shù): 23/33頁(yè)
文件大小: 1269K
代理商: TPS54519RTER
SLVSAT3
– SEPTEMBER 2011
ELECTRICAL CHARACTERISTICS
TJ = –40°C to 140°C, VIN = 2.95 to 6 V (unless otherwise noted)
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE (VIN PIN)
Operating input voltage
2.95
6
V
Internal under voltage lockout threshold
No voltage hysteresis, rising and falling
2.4
2.8
V
Shutdown supply current
EN = 0 V, 25
°C, 2.95 V ≤ VIN ≤ 6 V
1
5
μA
Quiescent Current - Iq
VSENSE = 0.9 V, 25
°C, RT = 400 k
455
500
μA
ENABLE AND UVLO (EN PIN)
Enable threshold
Rising
1.16
1.25
1.37
V
Falling
1.18
Enable threshold + 50 mV
-3.6
Input current
μA
Enable threshold
– 50 mV
-0.7
VOLTAGE REFERENCE (VSENSE PIN)
Voltage Reference
2.95 V
≤ VIN ≤ 6 V, –40°C <TJ < 140°C
0.588
0.600
0.612
V
MOSFET
BOOT-PH= 5 V
30
60
High side switch resistance
m
BOOT-PH= 2.95 V
35
70
VIN= 5 V
30
60
Low side switch resistance
m
VIN= 2.95 V
35
70
ERROR AMPLIFIER
Input current
50
nA
Error amplifier transconductance (gm)
–2 μA < I(COMP) < 2 μA, V(COMP) = 1 V
250
μmhos
Error amplifier transconductance (gm) during
–2 μA < I(COMP) < 2 μA, V(COMP) = 1 V,
85
μmhos
slow start
Vsense = 0.4 V
Error amplifier source/sink
V(COMP) = 1 V, 100 mV overdrive
±20
μA
COMP to Iswitch gm
19.0
A/V
CURRENT LIMIT
Current limit threshold
6.0
7.0
8.0
A
Low-side reverse current limit
–2.7
A
THERMAL SHUTDOWN
Thermal Shutdown
150
155
°C
Hysteresis
7.5
°C
TIMING RESISTOR (RT PIN)
Switching frequency range using RT mode
200
2000
kHz
Switching frequency
Rt = 84 k
400
490
600
kHz
PH (PH PIN)
Minimum On time
Measured at 50% points on PH, VIN = 5 V, IOUT =
100
ns
500 mA
Minimum Off time
Prior to skipping off pulses, BOOT-PH = 2.95 V,
60
ns
IOUT = 4 A
Rise/Fall Time
VIN = 5 V
1.5
V/ns
Copyright
2011, Texas Instruments Incorporated
3
Product Folder Link(s): TPS54519
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