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參數(shù)資料
| 型號(hào)： | PT4148A |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 12.5 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | HORIZONTAL, MA-6 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大小： | 182K |
| 代理商： | PT4148A |
For technical support and more information, see inside back cover or visit www.ti.com
PT4140 Series
20-W 24-V Input Isolated
DC/DC Converter
Specifications (Unless otherwise stated, Ta =25°C, Vin =24V, Cout =0F, and Io =Iomax)
PT4140 SERIES
Characteristic
Symbol
Conditions
Min
Typ
Max
Units
Output Current
Io
Over Vin range
Vo = 15V
0.1 (1)
—
1.3
Vo = 12V
0.1 (1)
—
1.6
A
Vo =5.0V
0.1 (1)
—
4.0
Vo ≤ 3.3V
0.1 (1)
—
5.0
Input Voltage Range
Vin
Over Io Range
18.0
24.0
40.0
VDC
Set Point Voltage Tolerance
Vo tol
Vo≥5.0V
—
±1
±1.5
%Vo
Vo≤3.3V
—
±50
mV
Temperature Variation
Regtemp
–40°
≤Ta ≤ +85°C
—
±0.5
—
%Vo
Line Regulation
Regline
Over Vin range
Vo≥5.0V
—
±0.2
±1.0
%Vo
Vo≤3.3V
—
±7
±33
mV
Load Regulation
Regload
Over Io range
Vo
≥5.0V
—
±0.4
±1.0
%Vo
Vo≤3.3V
—
±13
±33
mV
Total Output Voltage Variation
Votot
Includes set-point, line load,
Vo≥5.0V
—
±2
—
%Vo
–40°
≤Ta ≤ +85°C
Vo≤3.3V
—
±67
—
mV
Efficiency
η
Vo = 15V
—
86
—
Vo = 12V
—
83
—
Vo =5.0V
—
82
—
%
Vo =3.3V
—
78
—
Vo =1.8V
—
67
—
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
Vo ≥ 5.0V
—
0.5
—
%Vo
Vo ≤ 3.3V
—
15
—
mVpp
Transient Response
ttr
0.1A/s, load step 50% to 100% Iomax
—
100
—
s
Vtr
Vo over/undershoot
Vo ≥ 5.0V
—
±3.0
—
%Vo
Vo ≤ 3.3V
—
±150
—
mV
Short Circuit Current
Isc
—
2xIomax
—
A
Switching Frequency
s
Over Vin range
Vo≥ 12.0V
600
650
700
kHz
Vo ≤ 5.0V
800
850
900
Under-Voltage Lockout
UVLO
—
15
—
V
Remote On/Off (Pin 1)
Referenced to –Vin (pin 2)
Input High Voltage
VIH
2.5
—
7.0 (2)
V
Input Low Voltage
VIL
–0.2
—
+0.8
Input Low Current
IIL
—
–10
–
A
Standby Input Current
Iin standby
pins 1 & 2 connected
—
7
50
mA
Internal Input Capacitance
Cin
—
1.0
—
F
External Output Capacitance
Cout
Between +Vo and –Vo
0
—
200
F
Isolation Voltage
Input to output
1500
—
V
Capacitance
—
1100
—
pF
Resistance
10
——M
Operating Temperature Range
Ta
Over Vin range
-40
—
+85 (3)
°C
Storage Temperature
Ts
—
-40
—
+125
°C
Reliability
MTBF
Per Bellcore TR-332
4.0
—
106 Hrs
50% stress, Ta =40°C, ground benign
Mechanical Shock
—
Per Mil-Std-883D, method 2002.3,
—
500
—
G’s
1mS, half-sine, mounted to a fixture
Mechanical Vibration
—
Per Mil-Std-883D, method 2007.2,
—
15
—
G’s
20-2000Hz, soldered in a PC board
Weight
—
23
—
grams
Flammability
—
Materials meet UL 94V-0
Notes:
(1) The DC/DC converter will operate at no load with reduced specifications.
(2) The Remote On/Off (pin 1) has an internal pull-up, and if it is left open circuit the module will operate when input power is applied. Refer to the
application notes for interface considerations.
(3) See Safe Operating Area curves or contact the factory for the appropriate derating.
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