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参数资料
| 型号： | TPS54311PWPRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 6 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | GREEN, PLASTIC, HTSSOP-20 |
| 文件页数： | 13/19页 |
| 文件大小： | 469K |
| 代理商： | TPS54311PWPRG4 |
TPS54311, TPS54312
TPS54313, TPS54314
TPS54315, TPS54316
SLVS416B FEBRUARY 2002 REVISED APRIL 2005
www.ti.com
3
ELECTRICAL CHARACTERISTICS
TJ = 40°C to 125°C, VIN = 3 V to 6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE, VIN
VIN input voltage range
3
6
V
fs = 350 kHz,
FSEL = 0.8 V,
RT open
6.2
9.6
Quiescent current
fs = 550 kHz,
Phase pin open
FSEL ≥ 2.5 V,
RT open,
8.4
12.8
mA
Shutdown,
SS/ENA = 0 V
1
1.4
UNDER VOLTAGE LOCK OUT
Start threshold voltage, UVLO
2.95
3
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
OUTPUT VOLTAGE
TPS54311
TJ = 25°C,
VIN = 5 V
0.9
V
TPS54311
3 ≤ VIN ≤ 6 V,
0 ≤ IL ≤ 3 A,
40 ≤ TJ ≤ 125
2.5%
TPS54312
TJ = 25°C,
VIN = 5 V
1.2
V
TPS54312
3 ≤ VIN ≤ 6 V,
0 ≤ IL ≤ 3 A,
40 ≤ TJ ≤ 125
2.5%
TPS54313
TJ = 25°C,
VIN = 5 V
1.5
V
Output voltage
TPS54313
3 ≤ VIN ≤ 6 V,
0 ≤ IL ≤ 3 A,
40 ≤ TJ ≤ 125
2.5%
VO
Output voltage
TPS54314
TJ = 25°C,
VIN = 5 V
1.8
V
TPS54314
3 ≤ VIN ≤ 6 V,
0 ≤ IL ≤ 3 A,
40 ≤ TJ ≤ 125
2.5%
TPS54315
TJ = 25°C,
VIN = 5 V
2.5
V
TPS54315
3 ≤ VIN ≤ 6 V,
0 ≤ IL ≤ 3 A,
40 ≤ TJ ≤ 125
2.5%
TPS54316
TJ = 25°C,
VIN = 5 V
3.3
V
TPS54316
3 ≤ VIN ≤ 6 V,
0 ≤ IL ≤ 3 A,
40 ≤ TJ ≤ 125
2.5%
REGULATION
Line regulation(1) (3)
IL = 1.5 A,
350 ≤ fs ≤ 550 kHz, TJ = 85°C
0.21
%/V
Load regulation (1) (3)
IL = 0 A to 3 A,
350 ≤ fs ≤ 550 kHz, TJ = 85°C
0.21
%/A
OSCILLATOR
Internally set free-running frequency
FSEL ≤ 0.8 V,
RT open
280
350
420
kHz
Internally set free running frequency
range
FSEL ≥ 2.5 V,
RT open
440
550
660
kHz
Externally set free running frequency
RT = 180 k (1% resistor to AGND)(1)
252
280
308
Externally set free-running frequency
range
RT = 100 k (1% resistor to AGND)
460
500
540
kHz
range
RT = 68 k (1% resistor to AGND)(1)
663
700
762
kHz
High-level threshold voltage at FSEL
2.5
V
Low-level threshold voltage at FSEL
0.8
V
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 10.
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| TPS54316PWP | 6 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO20 |
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