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參數(shù)資料
| 型號： | 78SR-5/2-C |
| 廠商： | MURATA POWER SOLUTIONS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, PSSO3 |
| 封裝： | ROHS COMPLIANT PACKAGE-3 |
| 文件頁數(shù)： | 2/5頁 |
| 文件大小： | 399K |
| 代理商： | 78SR-5/2-C |
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
www.murata-ps.com/dpm
78SR 2 Amp Series
2 Amp, 3.3V & 5V Output, High Efciency,
Synchronous Switching Regulators
MPM_78SR-2A_B02 Page 2 of 5
TECHNICAL NOTES (continued)
3. Input-Output Isolation: 78SR regulators’ internal input and output cir-
cuits share a common connection (GND, pin 2), there is no electrical
isolation between their INPUT (pin 1) and OUTPUT (pin 3) terminals.
4. Overvoltage Protection: 78SR switching regulators do not provide
input or output overvoltage protection. In the extremely rare situation
where a catastrophic failure occurs, the output voltage may rise to
excessively high levels. If the load circuit must be protected against
all possible overvoltage situations, voltage-limiting circuitry must be
provided externally.
5. Soldering & Handling Precautions: All units are designed to be hand
soldered to pc-boards, using lead-free no-clean solders (+260°C, 5
seconds max.). See the Mechanical Specications section for pin 1
orientation and recommended pc-board hole dimensions.
78SR series regulators have limited built-in ESD protection; therefore
they should always be treated as ESD susceptible devices.
6. Horizontal-Pin Models (78SRH): 78SRH switching regulators are pin-
compatible replacements for TO-220 style LM78xx linear regulators
which are installed with their metal tabs or heat sinks laying at on
the surface of the pc-board. In replacement applications, 78SRH units
must be soldered to the pc-board such that the insulating body of
diode D1 lies at and in contact with the pc-board’s surface.
Input/Output
Models
78SR-3.3/2
78SR-5/2
Output Voltage
3.3Vdc
5.0Vdc
Rated Output Current
2.0A
Output Voltage Accuracy
±2%
Input Voltage Range
8.0-32Vdc
Line Regulation (100% load)
±0.35%
Load Regulation (0-100% load)
±0.2%
Quiescent Current (mAdc)
25 typ., 30 max
20 typ., 35max
Input Current vs. Input Voltage
See Efciency Curves
Efciency
See Efciency Curves
Transient Response
See Performance Curves
Input & Output Noise
See Performance Curves
Output Short Circuit Protection
Continuous
Input/Output Isolation
None
Overvoltage Protection
None
Undervoltage Protection
None
Environmental
Models
78SR-3.3/2
78SR-5/2
Operating Temperature
–40 to +70°C
Storage Temperature
–40 to +85°C
Cooling
③
Free Air Convection
Humidity (Non-condensing)
0 to 85%
Physical
Mechanical
See Mechanical Specications
Package
Open-frame SIP
Pins
0.025” (0.64mm) square,
tin-plated bronze
Weight
0.15 ounces (4.2g)
Pin Soldering
+260°C for 5 seconds
Absolute Maximum Ratings
Input Voltage:
+36Vdc
Operating Temperature
+85°C
Output Current
3.0 Amps
78SR Series regulators can withstand a continuous short-circuit across their
output terminals. However, extended short-circuit operation will decrease the
unit’s long-term reliability.
These are stress ratings only; Exposure of devices to any of these conditions
may adversely affect long-term reliability. Proper operation under conditions
other than those listed in the Performance/Functional Specications Table is not
implied.
③ See derating chart for more information.
Performance/Functional Specications
Typical at TA = +25°C & VIN = 12V, unless otherwise noted
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| 78SR5K | 制造商:TT Electronics / BI Technologies 功能描述:Res Cermet Trimmer 5K Ohm 10% 1W 22(Elec)Turn 2.79mm (33.53 X 4.95 X 8.13mm) J-Hook Box |
| 78SR5KLF | 制造商:TT Electronics / BI Technologies 功能描述:Res Cermet Trimmer 5K Ohm 10% 1W 22(Elec)Turn 2.79mm (33.53 X 4.95 X 8.13mm) J-Hook Box |
| 78SRH-3.3/2-C | 功能描述:DC/DC轉(zhuǎn)換器 8-32Vin 3.3Vout 2A HSIP Switching Reg. RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| 78SRH-5.2/2-C | 功能描述:DC DC CONVERTER 5.25V 制造商:murata power solutions inc. 系列:78SR 2 AMP 零件狀態(tài):在售 類型:線性穩(wěn)壓器替代品 輸出數(shù):1 電壓 - 輸入（最小值）:8V 電壓 - 輸入（最大值）:32V 電壓 - 輸出 1:5.25V 電壓 - 輸出 2:- 電壓 - 輸出 3:- 電壓 - 輸出 4:- 電流 - 輸出（最大值）:2A 應(yīng)用:ITE（商業(yè)） 特性:- 工作溫度:-40°C ~ 70°C 效率:- 安裝類型:通孔 封裝/外殼:3-SIP 模塊 大小/尺寸:0.85" 長 x 0.80" 寬 x 0.28" 高（21.6mm x 20.3mm x 7.1mm） 供應(yīng)商器件封裝:模塊 標(biāo)準(zhǔn)包裝:144 |
| 78SRH-5/2-C | 功能描述:DC/DC轉(zhuǎn)換器 8-32Vin 5Vout 2A HSIP Switching Reg. RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
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