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參數(shù)資料
| 型號(hào)： | OPA548F |
| 元件分類(lèi)： | DC/DC變換器 |
| 英文描述： | RxxP2xx Series - Econoline Unregulated DC-DC Converters; Input Voltage (Vdc): 12V; Output Voltage (Vdc): 3.3V; Power: 2W; EN 60950 certified, rated for 250VAC; UL-60950-1 / CSA C22.2 certified; 5.2kVDC Isolation for 1 Minute; Optional Continuous Short Circuit Protected; Wide Operating Temperature Range atfull 2 Watts Load, ?40??C to +85??C; Twin Chamber Transformer System; UL94V-0 Package Material; Efficiency to 80% |
| 中文描述： | 高電壓，大電流運(yùn)算放大器 |
| 文件頁(yè)數(shù)： | 9/16頁(yè) |
| 文件大小： | 284K |
| 代理商： | OPA548F |
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9
OPA548
7-Lead DDPAK
(1)
(Package Drawing #328)
7-Lead TO-220
(Package Drawing #327)
NOTE: (1) For improved thermal performance increase footprint area.
See Figure 6, “Thermal Resistance vs Circuit Board Copper Area”.
Mean dimensions in inches. Refer to end of data sheet
or Appendix C of Burr-Brown Data Book for tolerances
and detailed package drawings.
0
0
0.05
0
0.51
0.105
0.05
0.035
0.04
0
0
dissipation. Figure 6 shows typical thermal resistance from
junction-to-ambient as a function of the copper area
POWER DISSIPATION
Power dissipation depends on power supply, signal, and load
conditions. For dc signals, power dissipation is equal to
the product of output current times the voltage across the
mounting surface with a mica (or other film) insulator (see
Figure 5). For lowest overall thermal resistance it is best to
isolate the entire heat sink/OPA548 structure from the mount-
ing surface rather than to use an insulator between the semi-
conductor and heat sink.
For best thermal performance, the tab of the DDPAK sur-
face-mount version should be soldered directly to a circuit
board copper area. Increasing the copper area improves heat
13750
R
CL
0.01μF
(optional, for noisy
environments)
3
4
3
4
4.75V
R
CL
= 15000 (4.75V)
– 13750
LIM
OPA547 CURRENT LIMIT: 0 to 5A
NOTE: (1) Resistors are nearest standard 1% values.
DESIRED
CURRENT LIMIT
0A
1A
2.5A
3A
4A
5A
RESISTOR
(1)
(R
CL
)
I
LIM
Open
57.6k
14.7k
10k
4.02k
I
LIM
Connected to V–
CURRENT
(I
SET
)
0μA
67μA
167μA
200μA
267μA
333μA
VOLTAGE
(V
SET
)
(V–) + 4.75V
(V–) + 3.8V
(V–) + 2.5V
(V–) + 2V
(V–) + 1.1V
(V–)
RESISTOR METHOD
V–
13750
I
SET
= I
LIM
/15000
V
SET
= (V–) + 4.75V – (13750
) (I
LIM
)/15000
DAC METHOD (Current or Voltage)
V–
D/A
I
SET
4.75V
±I
LIM
=
Max I
O
= I
LIM
(4.75) (15000)
13750
+ R
CL
Max I
O
= I
LIM
±I
LIM
=15000
I
SET
FIGURE 3. Adjustable Current Limit.
FIGURE 4. TO-220 and DDPAK Solder Footprints.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| OPA548T | RxxP2xx Series - Econoline Unregulated DC-DC Converters; Input Voltage (Vdc): 12V; Output Voltage (Vdc): 3.3V; Power: 2W; EN 60950 certified, rated for 250VAC; UL-60950-1 / CSA C22.2 certified; 5.2kVDC Isolation for 1 Minute; Optional Continuous Short Circuit Protected; Wide Operating Temperature Range atfull 2 Watts Load, ?40??C to +85??C; Twin Chamber Transformer System; UL94V-0 Package Material; Efficiency to 80% |
| OPA549T | RxxPxx Series - Econoline Unregulated DC-DC Converters; Input Voltage (Vdc): 15V; Output Voltage (Vdc): 05V; Power: 1W; EN 60950 certified, rated for 250VAC; UL-60950-1 / CSA C22.2 certified; 5.2kVDC Isolation for 1 Minute; Optional Continuous Short Circuit Protected; 2 Chamber Transformer System; UL94V-0 Package Material; Efficiency to 80% |
| OPA551UA | High-Voltage, High-Current OPERATIONAL AMPLIFIERS |
| OPA552 | High-Voltage, High-Current OPERATIONAL AMPLIFIERS |
| OPA552FA | High-Voltage, High-Current OPERATIONAL AMPLIFIERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OPA548F/500 | 功能描述:運(yùn)算放大器 - 運(yùn)放 Hi-Vltg Hi-Current Exc Output Swing RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| OPA548F/500G3 | 功能描述:運(yùn)算放大器 - 運(yùn)放 Hi-Vltg Hi-Current Exc Output Swing RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| OPA548FKTWT | 功能描述:運(yùn)算放大器 - 運(yùn)放 Hi-Vltg Hi-Current Exc Output Swing RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| OPA548FKTWT | 制造商:Texas Instruments 功能描述:IC OP AMP SINGLE SMD |
| OPA548FKTWTG3 | 功能描述:運(yùn)算放大器 - 運(yùn)放 Hi-Vltg Hi-Current Exc Output Swing RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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