參數(shù)資料
型號(hào)： PT7721N
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 17 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA27
封裝： SIP-27
文件頁(yè)數(shù)： 2/8頁(yè)
文件大?。?/td> 166K
代理商： PT7721N
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
VID4=0
VID4=1
VID4=0
VID3 VID2 VID1 VID0
Vout
1
2.0V
1.30V
4.5V
6.1V
1
0
2.1V
1.35V
4.6V
6.2V
1
0
1
2.2V
1.40V
4.7V
6.3V
1
0
2.3V
1.45V
4.8V
6.4V
1
0
1
2.4V
1.50V
4.9V
6.5V
1
0
1
0
2.5V
1.55V
5.0V
6.6V
1
0
1
2.6V
1.60V
5.1V
6.7V
1
0
2.7V
1.65V
5.2V
6.8V
0
1
2.8V
1.70V
5.3V
6.9V
0
1
0
2.9V
1.75V
5.4V
7.0V
0
1
0
1
3.0V
1.80V
5.5V
7.1V
0
1
0
3.1V
1.85V
5.6V
7.2V
0
1
3.2V
1.90V
5.7V
7.3V
0
1
0
3.3V
1.95V
5.8V
7.4V
0
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, Ta =25°C, Vin =12V, Cin =560F, Cout =1200F, and Io =Iomax)
PT7720 SERIES
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Ta
= +60°C, 200 LFM, pkg N,
Vo
≤5V
0.1 (1)
—
17 (2)
A
Ta
= +25°C, natural convection,
Vo
≤5V
0.1 (1)
—
17 (2)
Output Power
Po
Ta
= +60°C, 200 LFM, pkg N,
Vo
≥5V
—
85
W
Ta
= +25°C, natural convection,
Vo
≥5V
—
85
Input Voltage Range
Vin
0.1A
≤ Io ≤ 17A
11.0
—
14.0
V
Output Voltage Tolerance
Vo
0°C
≤ Ta ≤ +60°C
(PT7721)
Vo–0.03
—
Vo+0.03
V
(PT7722)
—
±1
±2
%Vo
Line Regulation
Regline
11V
≤ Vin ≤ 14V (with remote sense)
—
±5
±10
mV
Load Regulation
Regload
0.1
≤ Io ≤ 17A (with remote sense)
—
±5
±10
mV
Vo Ripple/Noise
Vn
(PT7721)
—
50
—
mVpp
(PT7722)
—
100
—
Transient Response
ttr
Io step between 7.5A and 15A
—
100
—
Sec
with Cout = 1200F
Vos
Vo over/undershoot
—
200
—
mV
Efficiency
η
Io = 10A
Vo =5.0V
—
90
—
Vo = 3.3V
—
88
—
%
Vo = 2.5V
—
85
—
Vo = 1.5V
—
78
—
Switching Frequency
s
11V
≤ Vin ≤ 14V
300
350
400
kHz
0.1A
≤ Io ≤ 17A
Operating Temperature Range
Ta
—0
—
+85 (3)
°C
Storage Temperature
Ts
—
-40
—
+125
°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3 , 1 msec,
—
TBD
—
G’s
Half Sine, mounted to a fixture
Mechanical Vibration
Per Mil-STD-883D, Method 2007.2,
—
TBD
—
G’s
20-2000 Hz, Soldered in a PC board
Weight
—
Vertical
—
53
—
grams
Horizontal
—
66
—
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 1200F for proper operation. Do not use Oscon type capacitors. The maximum allow-
able output capacitance is (57,000
÷ Vout)F, or 15,000F, 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 1H. 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.
相關(guān)PDF資料
PDF描述
PT7741A 1-OUTPUT DC-DC BOOSTER MODULE
PT7741C 1-OUTPUT DC-DC BOOSTER MODULE
PT7744C 1-OUTPUT DC-DC BOOSTER MODULE
PT7744A 1-OUTPUT DC-DC BOOSTER MODULE
PT7744N 1-OUTPUT DC-DC BOOSTER MODULE
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