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參數(shù)資料
| 型號： | PT4504C |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 20 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, SMD-12 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 211K |
| 代理商： | PT4504C |
For technical support and more information, see inside back cover or visit www.ti.com
PT4500 Series
20-W 24-V Input Isolated
DC/DC Converter
Specifications (Unless otherwise stated, Ta =25°C, Vin =24V, Cout =0F, and Io =Iomax)
PT4500 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
Vo ≤ 3.3V
0.1 (1)
—5
Input Voltage Range
Vin
Over Io Range
18
24
40
VDC
Set Point Voltage Tolerance
Vo tol
—
±1
±1.5 (2)
%Vo
Temperature Variation
Regtemp
–40°
≤Ta≤ +85°C, Io =Iomin
—
±0.5
—
%Vo
Line Regulation
Regline
Over Vin range
—
±0.2
±1
%Vo
Load Regulation
Regload
Over Io range
Vo
≥5.0V
—
±0.4
±1
(2)
%Vo
Vo ≤3.3V
—
±13
±33
mV
Total Output Voltage Variation
Votot
Includes set-point, line, load,
—±2
±3
(2)
%Vo
–40°
≤Ta ≤ +85°C
Efficiency
η
Vo = 15V
—
86
—
Vo = 12V
—
83
—
Vo =5.0V
—
82
—
Vo =3.3V
—
79
—
%
Vo =1.8V
—
67
—
Vo =1.5V
—
65
—
Vo =1.2V
—
59
—
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
—
%Vo
Vo ≤ 3.3V
—
±150
—
mV
Current Limit Threshold
Ilim
Vin =18V, Vo = –1%
—
200
—
%Iomax
Output Voltage Adjust
Vo adj
—
±10
—
%
Switching Frequencys
Over Vin range
Vo≥ 5.0V
600
650
700
kHz
Vo ≤ 3.3V
800
850
900
Under-Voltage Lockout
UVLO
—
16.5
—
V
Remote On/Off (Pin 1)
Referenced to –Vin (pin 2)
High-Level Input Voltage
VIH
2.5
—
Open (3)
V
Low-Level Input Voltage
VIL
–0.2
—
0.8
Low-Level Input Current
IIL
—
–10
–
A
Standby Input Current
Iin standbypins 1 & 2 connected
—
7
10
mA
Internal Input Capacitance
Cin
—
0.5
—
F
External Output Capacitance
Cout
0
—
220 (4)
F
Isolation Voltage
Input–output/input–case
1500
—
V
Capacitance
Input to output
—
1100
—
pF
Resistance
Input to output
10
—
M
Operating Temperature Range
Ta
Over Vin range
–40
—
85 (5)
°C
Solder Reflow Temperature
Treflow
Surface temperature of module pins or case
—
215 (6)
°C
Storage Temperature
Ts
—
–40
—
125
°C
ReliabilityMTBF
Per Bellcore TR-332
4
—
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
—
Mil-Std-883D, Method 2007.2
Suffix N
—
20 (7)
—
G’s
20-2000Hz, soldered
Suffix A, C
—
20 (7)
—
Weight
—
23
—
grams
Flammability—
Materials meet UL 94V-0
Notes:
(1)The DC/DC converter will operate at no load with reduced specifications.
(2) For optimum voltage accuracy the ‘Remote Sense (+)’ and ‘Remote Sense (–)’ pins must be connected to +Vout and –Vout respectively.
(3)The Remote On/Off control (pin 1)has an internal pull-up. If pin 1 is left open the PT4500 will operate when input power is applied. A small low-
leakage (<100nA) MOSFET must be used to control this input. The open-circuit voltage is less than 10V. See application notes for further information.
(4)External output capacitance is not required for proper operation. Capacitamce may be added to improve the response to load transients. The maximum
total capacitance (including the load circuit) must not exceed 220F, and the combined ESR of must not be less than 100m
.
(5)See Safe Operating Area curves or contact the factory for the appropriate derating.
(6)During solder reflow of SMD package version do not elevate the module case, pins, or internal component temperatures above a peak of 215°C. For
further guidance refer to the application note, “Reflow Soldering Requirements for Plug-in Power Surface Mount Products,” (SLTA051).
(7)The case pins on the through-hole package types (suffixes N & A)must be soldered. For more information see the applicable package outline drawing.
SLTS153B - JUNE 2000 - REVISED OCTOBER 2002
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