參數(shù)資料
型號(hào)： PT4227N
英文描述： Analog IC
中文描述： 模擬IC
文件頁(yè)數(shù)： 2/7頁(yè)
文件大?。?/td> 171K
代理商： PT4227N
For technical support and more information, see inside back cover or visit www.ti.com
PT4220 Series
10-W Low-Profile 48V-Input
Isolated DC/DC Converter
Specifications
(Unless otherwise stated, T
a
=25°C, V
in
=48V, C
in
=0μF, C
out
=0μF, and I
o
=I
o
max)
PT4220 SERIES
Typ
Characteristic
Symbol
Conditions
Min
Max
Units
Output Current
I
o
Over V
in
range
V
o
≤
3.3V
V
o
=
5.0V
V
o
=
12V
0.1
(1)
0.1
(1)
0.1
(1)
36.0
—
—
—
—
—
—
—
48.0
±1
±0.2
±1
±5
3
2
0.85
75.0
±2
—
—
—
Input Voltage Range
Set Point Voltage Tolerance
Temperature Variation
Line Regulation
Load Regulation
Total Output Voltage Variation
V
in
V
o
tol
Reg
temp
Reg
line
Reg
load
V
o
tot
Over I
o
Range
VDC
%V
o
%V
o
mV
mV
–40°
≤
T
a
≤
+85°C, I
o
=I
o
min
Over V
in
range
Over I
o
range
Includes set-point, line, load,
–40°
≤
T
a
≤
+85°C
—
±1.5
±3
%V
o
Efficiency
η
V
o
= 12V
V
o
= 5.0V
V
o
= 3.3V
V
o
= 2.5V
V
o
= 1.8V
V
o
= 1.5V
V
o
= 1.3V
V
o
≤
5.0V
V
o
=
12V
—
—
—
—
—
—
—
—
—
—
—
—
±10
—
250
—
87
85
81
78
73
71
65
50
100
75
±150
±350
—
150
300
32
—
—
—
—
—
—
—
—
—
—
—
—
—
—
350
—
%
V
o
Ripple (pk-pk)
V
r
20MHz bandwidth
mV
pp
Transient Response
t
tr
V
tr
1A/μs load step, 50% to 100% I
o
max
V
o
over/undershoot
μs
V
o
≤
5.0V
V
o
=
12V
V
o
≥
2.5V
mV
Output Voltage Adjust
Current Limit Threshold
Switching Frequency
Under-Voltage Lockout
Remote On/Off (Pin 1)
Input High Voltage
Input Low Voltage
Input Low Current
Standby Input Current
Internal Input Capacitance
External Output Capacitance
V
adj
I
lim
s
UVLO
%V
o
%I
o
max
kHz
V
V
in
=36V,
V
o
= –1%
Over V
in
range
Referenced to –Vin (pin 3)
V
IH
V
IL
I
IL
I
in
standby
C
in
C
out
4.5
–0.2
—
—
—
0
(5)
0
(5)
1500
—
10
-40
-40
—
—
–0.5
1
0.66
—
—
—
1,100
—
—
—
Open
(3)
+0.8
—
—
—
1000
330
—
—
—
+85
(4)
+125
V
mA
mA
μF
μF
pins 1 & 3 connected
V
o
≤
5.0V
V
o
= 12V
Isolation Voltage
Capacitance
Resistance
Operating Temperature Range
Storage Temperature
Reliability
Input–output/input–case
Input to output
Input to output
Over V
in
range
—
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
Mil-Std-883D, Method 2007.2
20-2000Hz, all case styles soldered to PC
—
Materials meet UL 94V-0
V
pF
M
°C
°C
T
a
T
s
MTBF
4.7
—
—
10
6
Hrs
Mechanical Shock
—
—
500
—
G’s
Mechanical Vibration
—
—
20
(6)
—
G’s
Weight
Flammability
Notes:
(1) The DC/DC converter will operate at no load with reduced specifications.
(2) The maximum output current reduces the output power of the following devices to less than 10W:-
PT4225 =7.5W; PT4221 =5.4W; PT4226 =4.5W; PT4227 =3.9W.
(3) The Remote On/Off (pin 1) has an internal pull-up, and if it is left open circuit the converter will operate when input power is applied. The open-circuit
voltage is typically 5V. Refer to the application notes for interface considerations.
(4) See Safe Operating Area curves or contact the factory for the appropriate derating.
(5) An output capacitor is not required for proper operation.
(6) The case pins on through-hole pin configurations (N & A) must be soldered. For more information see the applicable package outline drawing.
—
—
—
20
—
grams
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