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參數(shù)資料
| 型號(hào)： | PT3344N |
| 英文描述： | DC to DC Converter |
| 中文描述： | DC至DC轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 2/9頁(yè) |
| 文件大?。?/td> | 194K |
| 代理商： | PT3344N |
For technical support and more information, see inside back cover or visit www.ti.com
PT3340 Series
30-W 24/48-V Input
Isolated DC/DC Converter
Specifications
(Unless otherwise stated, T
a
=25°C, V
in
=24V, C
out
=330μF, and I
o
=I
o
max)
PT3340 SERIES
Typ
Characteristic
Symbol
Conditions
Min
Max
Units
Output Current
I
o
Over V
in
range
V
o
= 15V
V
o
= 12V
V
o
=5.0V
V
o
≤
3.3V
0.1
0.1
0.25
(1)
0.25
(1)
18.0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
450
700
—
—
(1)
(1)
—
—
—
—
24.0
±1
±33
±0.5
±0.2
±7
±0.4
±13
±2
±67
85
86
83
80
1.0
50
100
±3.0
±100
2xI
o
max
500
750
17
16
2.0
2.5
6.0
8.0
60.0
±1.5
±50
—
±1.0
±33
±1.0
±33
—
—
—
—
—
—
2.0
75
200
±5.0
±150
—
550
800
—
—
A
Input Voltage Range
Set Point Voltage Tolerance
V
in
V
o
tol
Over I
o
Range
V
%V
o
mV
%V
o
%V
o
mV
%V
o
mV
%V
o
mV
V
o
≥
5.0V
V
o
≤
3.3V
Temperature Variation
Line Regulation
Reg
temp
Reg
line
–40°
≤
T
a
≤
+85°C
Over V
in
range
V
o
≥
5.0V
V
o
≤
3.3V
Vo
≥
5.0V
V
o
≤
3.3V
V
o
≥
5.0V
V
o
≤
3.3V
V
o
= 15V
V
o
= 12V
V
o
=5.0V
V
o
=3.3V
V
o
≥
5.0V
V
o
≤
3.3V
Load Regulation
Reg
load
Over I
o
range
Total Output Voltage Variation
V
o
tot
Includes set-point, line, load,
–40°
≤
T
a
≤
+85°C
Efficiency
η
%
V
o
Ripple (pk-pk)
V
r
20MHz bandwidth
%V
o
mV
pp
μs
%V
o
mV
A
Transient Response
t
tr
0.1A/μs load step, 50% to 100% I
o
max
V
o
over/undershoot
V
tr
V
o
≥
5.0V
V
o
≤
3.3V
Short Circuit Current
Switching Frequency
I
sc
s
Over V
in
range
V
o
>
10V
V
o
<
10V
kHz
Under-Voltage Lockout
UVLO
V
in
increasing
V
in
decreasing
Referenced to –V
in
(pins 4–6)
V
Remote On/Off Input (pin 2)
Input High Voltage
Input Low Voltage
Input Low Current
Standby Input Current
Internal Input Capacitance
External Output Capacitance
V
IH
V
IL
I
IL
I
in
standby
C
in
C
out
2.5
–0.2
–3
—
—
260
260
1500
—
10
-40
(4)
—
-40
—
—
–6
8
0.66
330
330
—
1200
—
—
—
—
15
(2)
+0.8
–10
16
—
600
1,000
(3)
—
—
—
+85
(5)
100
+125
V
μA
mA
μF
pins 2 & 4 connected
Between +V
o
and –V
o
V
o
≥
9V
V
o
≤
5V
(3)
μF
Isolation Voltage
Capacitance
Resistance
Operating Temperature Range
Maximum Case Temperature
Storage Temperature Range
Reliability
Input-output/input-case
Input-output
Input-output
Over V
in
range
Vdc
pF
M
°C
°C
°C
T
a
T
c
T
s
MTBF
—
Per Bellcore TR-332
50% stress, T
a
=40°C, ground benign
Per Mil-Std-883D, method 2002.3,
1mS, half-sine, mounted to a fixture
Per Mil-Std-883D, method 2007.2,
20-2000Hz, soldered to board
—
Materials meet UL 94V-0
5.0
—
—
10
6
Hrs
Mechanical Shock
—
—
500
—
G’s
Mechanical Vibration
—
—
10
—
G’s
Weight
Flammability
Notes:
(1) The DC/DC converter will operate at no load with reduced specifications.
(2) The Remote On/Off input has an internal pull-up. If it is left open circuit the module will operate when input power is applied. A low-leakage
(<100nA) MOSFET is recommended to control this input. The open-circuit voltage is less than 10V. See application notes for interface considerations.
(3) Output capacitor values are absolute. Allowances must be made for any additional de-coupling capacitors and the total external capacitor tolerance.
The value of external capacitance is limited due to regulator startup current requirements. Consult the factory for further details.
(4) For operation below 0°C, the required external output capacitor must have temperature stable characteristics. E.g. Tantalum or Oscon types.
(5) See Safe Operating Area curves or contact the factory for the appropriate thermal derating.
—
—
—
43
—
grams
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