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參數(shù)資料
| 型號： | TPS54980PWP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 16 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | GREEN, PLASTIC, HTSSOP-28 |
| 文件頁數(shù)： | 15/21頁 |
| 文件大?。?/td> | 568K |
| 代理商： | TPS54980PWP |
TPS54980
SLVS452A FEBRUARY 2003 REVISED FEBRUARY 2005
www.ti.com
3
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE, VIN
Input voltage range, VIN
3.0
4.0
V
I(Q)
Quiescent current
fs = 350 kHz, RT open,
PH pin open
9.8
17
mA
I(Q)
Quiescent current
fs = 500 kHz, RT = 100 k, PH pin open
14
23
mA
Shutdown, ENA = 0 V
1
1.4
UNDER VOLTAGE LOCK OUT
Start threshold voltage, UVLO
2.95
3.0
V
Stop threshold voltage, UVLO
2.70
2.80
V
Hysteresis voltage, UVLO
0.14
0.16
V
Rising and falling edge deglitch, UVLO(1)
2.5
s
BIAS VOLTAGE
Output voltage, VBIAS
I(VBIAS) = 0
2.70
2.80
2.90
V
Output current, VBIAS (2)
100
A
CUMULATIVE REFERENCE
Vref
Accuracy
0.882
0.891
0.900
V
REGULATION
Line regulation(1)(3)
IL = 4.5 A,fs = 350 kHz, TJ = 85°C
0.04
%/V
Line regulation(1)(3)
IL = 4.5 A,fs = 550 kHz, TJ = 85°C
0.04
%/V
Load regulation(1)(3)
IL = 0 A to 9 A, fs = 350 kHz, TJ = 85°C
0.03
%/A
Load regulation(1)(3)
IL = 0 A to 9 A, fs = 550 kHz, TJ = 85°C
0.03
%/A
OSCILLATOR
Internally set—free running frequency
RT open
280
350
420
kHz
RT = 180 k
(1% resistor to AGND)
252
280
308
Externally set—free running frequency range
RT = 100 k
(1% resistor to AGND)
460
500
540
kHz
Externally set—free running frequency range
RT = 68 k
(1% resistor to AGND)
663
700
762
kHz
Ramp valley(1)
0.75
V
Ramp amplitude (peak-to-peak)(1)
1
V
Minimum controllable on time(1)
200
ns
Maximum duty cycle
90%
(1) Specified by design
(2) Static resistive loads only
(3) Specified by the circuit used in Figure 9
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