參數(shù)資料
型號： TPS54313MPWPREP
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 6.5 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO20
封裝： GREEN, PLASTIC, HTSSOP-20
文件頁數(shù)： 17/21頁
文件大小： 614K
代理商： TPS54313MPWPREP
www.ti.com
Electrical Characteristics
SGLS376A – FEBRUARY 2007 – REVISED MARCH 2007
T
J = –55°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,
6.2
9.6
RT open
xxx
Quiescent current
fs = 550 kHz,
FSEL
≥ 2.5 V,
mA
8.4
12.8
Phase pin open,
RT open
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
Hysteresis voltage, UVLO
0.14
V
Rising and falling edge deglitch,
2.5
s
UVLO(1)
BIAS VOLTAGE
Output voltage, VBIAS
I(VBIAS) = 0
2.7
2.8
2.95
V
Output current, VBIAS(2)
100
A
OUTPUT VOLTAGE
TJ = 25°C
VIN = 5.0 V
0.9
V
TPS54311
3
≤ V
IN ≤ 6V
0
≤ I
L ≤ 3A
–55
°C ≤ T
J ≤ 125°C
–3.0%
3.0%
TJ = 25°C
VIN = 5.0 V
1.2
V
TPS54312
3
≤ V
IN ≤ 6V
0
≤ I
L ≤ 3A
–55
°C ≤ T
J ≤ 125°C
–3.0%
3.0%
TJ = 25°C
VIN = 5.0 V
1.5
V
TPS54313
3
≤ V
IN ≤ 6V
0
≤ I
L ≤ 3A
–55
°C ≤ T
J ≤ 125°C
–3.0%
3.0%
VOOutput Voltage
TJ = 25°C
VIN = 5.0 V
1.8
V
TPS54314
3
≤ V
IN ≤ 6V
0
≤ I
L ≤ 3A
–55
°C ≤ T
J ≤ 125°C
–3.0%
3.0%
TJ = 25°C
VIN = 5.0 V
2.5
V
TPS54315
3
≤ V
IN ≤ 6V
0
≤ I
L ≤ 3A
–55
°C ≤ T
J ≤ 125°C
–3.0%
3.0%
TJ = 25°C
VIN = 5.0 V
3.3
V
TPS54316
3
≤ V
IN ≤ 6V
0
≤ I
L ≤ 3A
–55
°C ≤ T
J ≤ 125°C
–3.0%
3.0%
REGULATION
Line regulation(1)(3)
IL = 1.5 A,
350
≤ f
s ≤ 550 kHz,
0.21
%/V
Load regulation(1)(3)
IL = 0 A to 3 A,
350
≤ f
s ≤ 550 kHz,
0.21
%/A
OSCILLATOR
FSEL
≤ 0.8 V,
RT open
255
350
450
Internally set free-running frequency
kHz
range
FSEL
≥ 2.5 V,
RT open
400
550
700
RT = 180 k
(1% resistor to AGND)(1)
252
280
308
Externally set free-running frequency
RT = 160 k
(1% resistor to AGND)
290
312
350
kHz
range
RT = 68 k
(1% resistor to AGND)(1)
663
700
762
High-level threshold voltage at FSEL
2.5
V
Low-level threshold voltage at FSEL
0.8
V
Pulse duration, FSEL(1)
50
ns
Frequency range, FSEL(1)(4)
330
700
kHz
Ramp valley(1)
0.75
V
(1)
Specified by design
(2)
Static resistive loads only
(3)
Specified by the circuit used in Figure 10.
(4)
To ensure proper operation when RC filter is used between external clock and FSEL pin, the recommended values are R
≤ 1 k and C
≤ 68 pF.
5
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