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參數(shù)資料
| 型號： | PT4205A |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 6 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | HORIZONTAL THROUGH HOLE, DIP-18 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大小： | 185K |
| 代理商： | PT4205A |
For technical support and more information, see inside back cover or visit www.ti.com
PT4205 Series
3-7 Watt 24V-Input
Isolated DC/DC Converter
Ordering Information
Through-Hole
PT4205A = 3.3V/1.8A
PT4206A = 5V/1.2A
Surface Mount
PT4205C = 3.3V/1.8A
PT4206C = 5V/1.2A
Pin-Out Information
Pin
Function
1Vout
2Vout return
3
Do not connect
4
Do not connect
5
Do not connect
6
Do not connect
7
Sync input
8*
Vadj
9*
Nominal output
voltage resistor
10
Turn-on/off input
voltage adjust
11
Remote on/off
12
Do not connect
13
Do not connect
14
Do not connect
15
Do not connect
16
Do not connect
17
+Vin
18
-Vin
* Please note that when the
Vadj is not used, pin 8 must
be connected to pin 9.
Wide Input Voltage Range:
18V to 36V
84% Efficiency
1,500 VDC Isolation
18 Pin - DIP Package
3.5 Million Hour MTBF
Meets FCC/EN55022 Class A
UL and CSA approved
No External Components Required
Adjustable Output Voltage
The PT4205 series of isolated DC/DC
converters employ high switching frequen-
cies, thick-film technology and a high degree
of silicon integration. The high reliability
and very low package height makes these
converters ideal for Telecom and Datacom
applications requiring input-to-output isola-
tion with board spacing down to 0.6”.
The PT4205 series is offered in a unique
molded through-hole or SMD-DIP package
with single output voltages of 3.3V and 5V.
(For dimensions and PC
board layout, see Package
Style 900.)
Package (Top View)
PT4205
18
17
16
15
14
13
12
11
10
1
2
3
4
5
6
7
8
9
-Vin
+Vin
NC
RC
TOA
+Vout
-Vout
NC
Sync
Vadj
NOR
SLTS022B
(Revised 1/3/2002)
Specifications
Characteristics
PT4205 SERIES
(T
a = 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Over Vin range
Vo = 3.3V
0
—
1.8
A
Vo = 5V
0
—
1.2
A
Current Limit
Icl
Vin = 24V
Vo = 3.3V
2.0
—
3.0
A
Vo = 5V
1.3
1.6
2.4
A
On/Off Standby Current
Iin standby
Vin = 24V, Pin 11 = -Vin
—
0.5
—
mA
Short Circuit Current
Isc
Vin = 24V
Vo = 3.3V
—
2.5
—
A
Vo = 5V
—
2.0
—
A
Inrush Current
Iir
Vin = 24V @ max Io
—
0.6
1.0
A
tir
On start-up
—
1.0
2.0
mSec
Input Voltage Range
Vin
Over Io Range
18 (1)
24
36
V
Output Voltage Tolerance
Vo
Over Io Range
—
±4
—
%Vo
Idling Voltage
Vo
Io = 0A
Vo = 3.3V
—
3.65
4.0
V
Vo = 5V
—
5.6
6.0
V
Ripple Rejection
RR
Over Vin range @ 120 Hz
—
60
—
dB
Line Regulation
Regline
Over Vin range @ max Io
—
±0.5
—
%Vo
Load Regulation
Regload
10% to 100% of Io max
—
±3
—
%Vo
Vo Ripple/Noise
Vn
Vin=24V, Io=Io max
—
3070mVpp
Transient Response
ttr
50% load change
—
100
300
Sec
Vo over/undershoot
—
3.0
5.0
%Vo
Efficiency
η
Vin=24V, Io=1.8A, Vo=3.3V
—
79
—
%
Vin=24V, Io=1.2A, Vo=5V
—
84
—
%
Switching Frequency
o
Over Vin and Io
520
—
688
kHz
Pin Temperature
Tp
@ Pin 1
—
+95
°C
Operating Temperature
Ta
Vin = 24V @ max Io
-40
—
+85
°C
Free air convection, (40-60LFM)
Storage Temperature
Ts
—
-55
—
+125
°C
Mechanical Shock
—
Per Mil-STD-202F, Method 213B,
—50
—
G’s
6mS, half-sine, mounted to a PCB
Mechanical Vibration
—
Per Mil-STD-202F, Method 204D,
—10
—
G’s
10-500Hz, mounted to a PCB
Weight
—
20
—
grams
Isolation
—
1500
—
VDC
Flammability
—
Materials meet UL 94V-0
Notes (1) The minimum input voltage is adjustable. See the specific application note on the PT4200/4205/4300 Series.
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