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參數(shù)資料
| 型號(hào)： | PT7722C |
| 英文描述： | 100V Single N-Channel Hi-Rel MOSFET in a TO-254AA package |
| 中文描述： | 開關(guān)電源控制器 |
| 文件頁數(shù)： | 2/7頁 |
| 文件大?。?/td> | 142K |
| 代理商： | PT7722C |
For technical support and more information, see inside back cover or visit www.ti.com
17 A, 12-V Input
“
Big-Hammer II
”
Programmable ISR
PT7720 Series
Programming Information
PT7721
PT7722
VID4=1
Vout
VID4=1
Vout
VID4=0
Vout
VID4=0
Vout
VID3 VID2 VID1 VID0
1
1
1
1
1
1
1
1
1
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1 2.0V 1.30V 4.5V 6.1V
0 2.1V 1.35V 4.6V 6.2V
1 2.2V 1.40V 4.7V 6.3V
0 2.3V 1.45V 4.8V 6.4V
1 2.4V 1.50V 4.9V 6.5V
0 2.5V 1.55V 5.0V 6.6V
1 2.6V 1.60V 5.1V 6.7V
0 2.7V 1.65V 5.2V 6.8V
1 2.8V 1.70V 5.3V 6.9V
0 2.9V 1.75V 5.4V 7.0V
1 3.0V 1.80V 5.5V 7.1V
0 3.1V 1.85V 5.6V 7.2V
1 3.2V 1.90V 5.7V 7.3V
0 3.3V 1.95V 5.8V 7.4V
1 3.4V 2.00V 5.9V 7.5V
0 3.5V 2.05V 6.0V 7.6V
Logic 0 = Pin 12 potential (remote sense gnd)
Logic 1 = Open circuit (no pull-up resistors)
VID3 and VID4 may not be changed while the unit is operating.
Specifications
(Unless otherwise stated, T
a
=25°C, V
in
=12V, C
in
=560μF, C
out
=1200μF, and I
o
=I
o
max)
PT7720 SERIES
Characteristics
Output Current
Symbols
I
o
Conditions
T
a
=
+60°C, 200 LFM, pkg N,
T
a
=
+25°C, natural convection,
T
a
=
+60°C, 200 LFM, pkg N,
T
a
=
+25°C, natural convection,
0.1A
≤
I
o
≤
17A
0°C
≤
T
a
≤
+60°C
Min
0.1
(1)
0.1
(1)
—
—
11.0
V
o
–0.03
—
—
—
—
—
—
—
—
—
—
—
Typ
—
—
—
—
—
—
±1
±5
±5
50
100
100
200
90
88
85
78
Max
17
(2)
17
(2)
85
85
14.0
V
o
+0.03
±2
±10
±10
—
—
—
—
—
—
—
—
Units
V
o
≤
5V
V
o
≤
5V
V
o
≥
5V
V
o
≥
5V
A
Output Power
P
o
W
Input Voltage Range
Output Voltage Tolerance
V
in
V
o
V
V
%V
o
mV
mV
(PT7721)
(PT7722)
Line Regulation
Load Regulation
V
o
Ripple/Noise
Reg
line
Reg
load
V
n
11V
≤
V
in
≤
14V (with remote sense)
0.1
≤
I
o
≤
17A (with remote sense)
(PT7721)
(PT7722)
mVpp
Transient Response
with C
out
= 1200μF
Efficiency
t
tr
V
os
η
I
o
step between 7.5A and 15A
V
o
over/undershoot
I
o
= 10A
μSec
mV
V
o
=5.0V
V
o
= 3.3V
V
o
= 2.5V
V
o
= 1.5V
%
Switching Frequency
s
11V
≤
V
in
≤
14V
0.1A
≤
I
o
≤
17A
—
—
Per Mil-STD-883D, Method 2002.3 , 1 msec,
Half Sine, mounted to a fixture
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, Soldered in a PC board
300
350
400
kHz
Operating Temperature Range
Storage Temperature
Mechanical Shock
T
a
T
s
0
-40
—
—
+85
(3)
+125
°C
°C
—
TBD
—
G’s
Mechanical Vibration
—
TBD
—
G’s
Weight
—
Vertical
Horizontal
—
—
53
66
—
—
grams
Notes:
(1) The ISR will operate down to no load with reduced specifications. Please note that this product is not short-circuit protected.
(2) The PT7720 series can be easily paralleled with one or more of the PT7748 Current Boosters to provide increased output current in increments of 17A.
(3) See Safe Operating Area curves or contact the factory for the appropriate derating.
Output Capacitors:
The PT7720 series requires a minimum output capacitance of 1200μF for proper operation. Do not use Oscon type capacitors. The maximum allow-
able output capacitance is (57,000
÷
Vout)μF, or 15,000μF, whichever is less.
Input Filter:
An input inductor is optional for most applications. The input inductor must be sized to handle 7ADC with a typical value of 1μH. The input capacitance
must be rated for a minimum of 4 Arms of ripple current when operated at maximum output current and maximum output voltage. Contact an applications specialist
for input capacitor selection for applications at other output voltages and output currents.
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