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| 型號(hào)： | TPS54614PWPR |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁(yè)數(shù)： | 4/16頁(yè) |
| 文件大小： | 260K |
| 代理商： | TPS54614PWPR |
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TPS54611, TPS54612, TPS54613
TPS54614, TPS54615, TPS54616
SLVS400A
–
AUGUST 2001
–
REVISED JANUARY 2002
4
www.ti.com
electrical characteristics, T
J
=
–
40
°
C to 125
°
C, V
I
= 3 V to 6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE, VIN
Input voltage range, VIN
3.0
6.0
V
fs = 350 kHz, FSEL
≤
0.8 V, RT open, phase pin open
fs = 550 kHz, FSEL
≤
2.5 V, RT open, phase pin open
Shutdown, SS/ENA = 0 V
6.2
9.6
I(Q)
Quiescent current
8.4
12.8
mA
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
See Note 1
2.5
μ
s
BIAS VOLTAGE
Output voltage, VBIAS
I(VBIAS) = 0
See Note 2
2.70
2.80
2.90
V
μ
A
Output current, VBIAS
100
OUTPUT VOLTAGE
TPS54611
TJ = 25
°
C, VIN = 5 V
3 V
≤
VIN
≤
6 V, 0
≤
IL
≤
6 A,
–
40
°
≤
TJ
≤
125
°
C
TJ = 25
°
C, VIN = 5 V
3 V
≤
VIN
≤
6 V, 0
≤
IL
≤
6 A,
–
40
°
≤
TJ
≤
125
°
C
TJ = 25
°
C, VIN = 5 V
3 V
≤
VIN
≤
6 V, 0
≤
IL
≤
6 A,
–
40
°
≤
TJ
≤
125
°
C
TJ = 25
°
C, VIN = 5 V
3 V
≤
VIN
≤
6 V, 0
≤
IL
≤
6 A,
–
40
°
≤
TJ
≤
125
°
C
TJ = 25
°
C, VIN = 5 V
3 V
≤
VIN
≤
6 V, 0
≤
IL
≤
6 A,
–
40
°
≤
TJ
≤
125
°
C
TJ = 25
°
C, VIN = 5 V
3 V
≤
VIN
≤
6 V, 0
≤
IL
≤
6 A,
–
40
°
≤
TJ
≤
125
°
C
0.9
V
–
2.0%
2.0%
TPS54612
1.2
V
–
2.0%
2.0%
TPS54613
1.5
V
VO
Output voltage
–
2.0%
2.0%
TPS54614
1.8
V
–
3.0%
3.0%
TPS54615
2.5
V
–
3.0%
3.0%
TPS54616
3.3
V
–
3.0%
3.0%
REGULATION
Line regulation (see Notes 1 and 3)
IL = 3 A, 350
≤
fs
≤
550 kHz, TJ = 85
°
C
IL = 0 A to 6 A, 350
≤
fs
≤
550 kHz, TJ = 85
°
C
0.088
%/V
Load regulation (see Notes 1 and 3)
0.0917
%/A
OSCILLATOR
—
Internally set
frequency
SYNC
≤
0.8 V,
SYNC
≥
2.5 V,
RT = 180 k
(1% resistor to AGND)
RT = 100 k
(1% resistor to AGND)
RT = 68 k
(1% resistor to AGND)
RT open
280
350
420
kHz
free running
RT open
440
550
660
E t
Externally set
—
free running
frequency range
252
280
308
460
500
540
kHz
280
700
762
High level threshold, FSEL
2.5
V
Low level threshold, FSEL
0.8
V
Ramp valley
See Note 1
0.75
V
Ramp amplitude (peak-to-peak)
See Note 1
1
V
Minimum controllable on time
See Note 1
200
ns
Maximum duty cycle
1. Specified by design
2. Static resistive loads only
3. Tested using circuit in Figure 10.
See Note 1
90%
NOTES:
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