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參數資料
| 型號： | TPS54073PWPR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 25 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | GREEN, PLASTIC, HTSSOP-28 |
| 文件頁數： | 20/26頁 |
| 文件大小： | 850K |
| 代理商： | TPS54073PWPR |
ELECTRICAL CHARACTERISTICS
www.ti.com ............................................................................................................................................................................................ SLVS547 – FEBRUARY 2005
TJ = –40°C to 125°C, VIN = 3 V to 4 V, PVIN = 2.2 V to 4 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE, VIN
VI
Input voltage, VIN
3
4
V
Supply voltage range, PVIN
Output = 1.8 V
2.2
4
V
fs = 350 kHz, RT open, PH pin open, SYNC = 0 V,
6.3
10
mA
PVIN = 2.5 V
VIN = 3.3 V
fs = 550 kHz, RT open, PH pin open, SYNC ≥ 2.5 V,
8.6
13
mA
PVIN = 2.5 V
SHUTDOWN, SS/ENA = 0 V, PVIN = 2.5 V
1
1.4
mA
IQ
Quiescent current
fs = 350 kHz, RT open, PH pin open, SYNC = 0 V,
3.2
6
mA
VIN = 3.3 V
PVIN = 2.5 V
fs = 550 kHz, RT open, PH pin open, SYNC ≥ 2.5 V,
4.4
7
mA
VIN = 3.3 V
SHUTDOWN, SS/ENA = 0 V, VIN = 3.3 V
< 140
A
UNDERVOLTAGE LOCKOUT (VIN)
Start threshold voltage, UVLO
2.9
3
V
Stop threshold voltage, UVLO
2.7
2.8
V
Hysteresis voltage, UVLO
100
mV
Rising and falling edge deglitch, UVLO(1)
2.5
s
BIAS VOLTAGE
Output voltage, VBIAS
I(VBIAS) = 0
2.7
2.8
2.9
V
Output current, VBIAS(2)
100
A
CUMULATIVE REFERENCE
Vref
Accuracy
0.882
0.891
0.900
V
REGULATION
Line regulation(3)(4)
IL = 7 A, fs = 350 kHz, TJ = 85°C
0.05
%/V
IL = 0 A to 14 A, fs = 350 kHz, TJ = 85°C
Load regulation(3)(4)
0.013
%/A
PVIN = 2.5 V, VIN = 3.3 V
OSCILLATOR
RT open(3), SYNC
≤ 0.8 V
280
350
420
Internally set—free running frequency
kHz
RT open(3), SYNC
≥ 2.5 V
440
550
660
RT = 180 k
(1% resistor to AGND)(3)
252
280
308
Externally set—free running frequency range
RT = 100 k
(1% resistor to AGND)
460
500
540
kHz
RT = 68 k
(1% resistor to AGND)(3)
663
700
762
High-level threshold voltage, SYNC
2.5
V
Low-level threshold voltage, SYNC
0.8
V
Pulse duration, SYNC(3)
50
ns
Frequency range, SYNC
300
700
kHz
Ramp valley(3)
0.75
V
Ramp amplitude (peak-to-peak)(3)
1
V
Minimum controllable on time(3)
200
ns
Maximum duty cycle(3)
90%
(1)
Specified by design
(2)
Static resistive loads only
(3)
Specified by design
(4)
Specified by the circuit used in Figure 12
Copyright 2005, Texas Instruments Incorporated
3
Product Folder Link(s): TPS54073
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