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| 型號： | TPS54615MPWPREP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 12 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | PLASTIC, HTSSOP-28 |
| 文件頁數(shù)： | 17/21頁 |
| 文件大?。?/td> | 650K |
| 代理商： | TPS54615MPWPREP |
www.ti.com
ELECTRICAL CHARACTERISTICS
TPS54611-EP, TPS54612-EP
TPS54613-EP, TPS54614-EP
TPS54615-EP, TPS54616-EP
SGLS293A – FEBRUARY 2005 – REVISED AUGUST 2005
T
J = –55°C to 125°C, VI = 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, phase pin open
9.8
15.8
I(Q)
Quiescent current
fs = 550 kHz, FSEL ≥ 2.5 V, RT open, phase pin open
14
23.5
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
2.7
2.8
V
Hysteresis voltage, UVLO
0.16
V
Rising and falling edge deglitch, UVLO(1)
2.5
s
BIAS VOLTAGE
Output voltage, VBIAS
I(VBIAS) = 0
2.7
2.8
3
V
Output current, VBIAS(1)
100
A
OUTPUT VOLTAGE
TJ = 25°C, VIN = 5 V
0.9
V
TPS54611
3 V
≤ V
IN≤ 6 V, 0 ≤ IL≤ 6 A, –55°C ≤ TJ≤ 125°C
–4%
3%
TJ = 25°C, VIN = 5 V
1.2
V
TPS54612
3 V
≤ V
IN≤ 6 V, 0 ≤ IL≤ 6 A, –55°C ≤ TJ≤ 125°C
–4%
3%
TJ = 25°C, VIN = 5 V
1.5
V
TPS54613
3 V
≤ V
IN≤ 6 V, 0 ≤ IL≤ 6 A, –55°C ≤ TJ≤ 125°C
–4%
3%
VO
Output voltage
TJ = 25°C, VIN = 5 V
1.8
V
TPS54614
3 V
≤ V
IN≤ 6 V, 0 ≤ IL≤ 6 A, –55°C ≤ TJ≤ 125°C
–4%
3%
TJ = 25°C, VIN = 5 V
2.5
V
TPS54615
3 V
≤ V
IN≤ 6 V, 0 ≤ IL≤ 6 A, –55°C ≤ TJ≤ 125°C
–4%
3%
TJ = 25°C, VIN = 5 V
3.3
V
TPS54616
3 V
≤ V
IN≤ 6 V, 0 ≤ IL≤ 6 A, –55°C ≤ TJ≤ 125°C
–4%
3%
REGULATION
Line regulation(1)(2)
IL = 3 A, 350 ≤ fs≤ 550 kHz, TJ = 85°C
0.088
%/V
IL = 0 A to 6 A, 350 ≤ fs≤ 550 kHz, TJ = 85°C
0.091
%/A
Load regulation(1)(2)
7
OSCILLATOR
FSEL
≤ 0.8 V, RT open
265
350
440
Internally set – free running frequency
kHz
FSEL
≥ 2.5 V, RT open
415
550
680
RT = 180 k
(1% resistor to AGND)(1)
280
Externally set – free running frequency range
RT = 160 k
(1% resistor to AGND)
290
312
390
kHz
RT = 68 k
(1% resistor to AGND)(1)
700
High level threshold, FSEL
2.5
V
Low level threshold, FSEL
0.8
V
Pulse duration, FSEL(1)
50
ns
Frequency range, FSEL(1)(3)
330
700
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(1)
90%
(1)
Specified by design
(2)
Tested using circuit in Figure 10.
(3)
To ensure proper operation when the RC filter is used between the external clock and the FSEL pin, the recommended values are R
≤ 1
k
and C ≤ 120 pF.
5
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