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78SRH-5/2-C

更新时间： 2024-11-23 06:32:07
品牌 Logo 应用领域
村田 - MURATA 稳压器开关式稳压器或控制器电源电路开关式控制器PC
页数 文件大小 规格书
5页 435K
描述
2 Amp, 3.3V & 5V Output, High Efficiency, Synchronous Switching Regulators

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中文翻译

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78SRH-5/2-C 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Active零件包装代码：MODULE
包装说明：,针数：3
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.56
Samacsys Confidence：4Samacsys Status：Released
Samacsys PartID：803226Samacsys Pin Count：3
Samacsys Part Category：Integrated CircuitSamacsys Package Category：Other
Samacsys Footprint Name：78SRH-5/2-C-8Samacsys Released Date：2017-12-05 22:42:56
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING REGULATOR
最大输入电压：32 V最小输入电压：8 V
JESD-30 代码：R-PSSO-F3JESD-609代码：e3
功能数量：1端子数量：3
最高工作温度：70 °C最低工作温度：-40 °C
最大输出电流：2 A标称输出电压：5 V
封装主体材料：PLASTIC/EPOXY封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified表面贴装：YES
切换器配置：BUCK最大切换频率：200 kHz
温度等级：OTHER端子面层：Tin (Sn)
端子形式：FLAT端子位置：SINGLE
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

78SRH-5/2-C 数据手册

 浏览型号78SRH-5/2-C的Datasheet PDF文件第2页浏览型号78SRH-5/2-C的Datasheet PDF文件第3页浏览型号78SRH-5/2-C的Datasheet PDF文件第4页浏览型号78SRH-5/2-C的Datasheet PDF文件第5页 
78SR 2 Amp Series  
2 Amp, 3.3V & 5V Output, High Efficiency,  
Synchronous Switching Regulators  
Datel’s 78SR-3.3/2 (3.3V, 2 Amp output) and 78SR-5/2 (5V, 2 Amp output) step-down,  
switching regulators are ultra high-efficiency, modern replacements for LM78xx series  
1.5Amp linear regulators. They are pin- and size-compatible, drop-in replacements for  
TO-220 style, 3-pin SIP or modular packages which require heat sinks. And, to ensure the  
lowest installed cost, no messy thermal grease, no mounting hardware and no external  
components are required for full operation.  
FEATURES  
N
Up to 95% efficiency–no costly heat sinks or fans  
required  
N
3.3V/2A & 5V/2A models; pin compatible with 1.5A 78xx  
regulators  
A 200KHz switching frequency, combined with a synchronous rectifier buck regulator  
topology, provides for efficiencies exceeding 95%. 78SR switchers can easily drive 2A loads  
from 12V or 24Vsupplies—at ambient temperatures up to +70°C—without heat sinks,  
fans, or thermal derating. A thermally efficient 3-pin vertical mount SIP occupies less than  
0.09in.2 (58mm2) of pc-board real estate, while a horizontal mount option has an installed  
height of less than 0.290in. (7.4mm).  
N
Wide 8–32Vdc input voltage range  
N
Two package options:  
3-pin vertical mount SIP  
Low profile, horizontal mount SIP  
N
No external Input/Output filter capacitors required  
78SR Series 2A switching regulators are lower cost, improved-efficiency upgrades for  
many 78HT2, 78SR1, 78ST1, and PT5100 series switchers. Their higher efficiency ensures  
significantly lower heat generation and provides increased run time in battery-powered  
applications, making these regulators ideal for today’s low power “green” applications.  
N
–40 to +70°C full load operation at 24Vin with no  
derating  
N
Excellent load ( 0.25%) and line ( 0.35%) regulation  
N
Low-cost upgrade for 78HT2, 78SR1, 78ST1, and  
TECHNICAL NOTES  
PT5100 switchers  
N
Open frame design minimizes self-heating & pc-board  
footprint  
1. Input/Output (I/O) Filtering: As shown in the accompanying noise and ripple graphs,  
78SR Series regulators exhibit excellent low noise performance with no additional I/O filter  
components. However, if additional noise reduction is required, be sure to use low ESR  
capacitors that are rated for continuous operation (with an additional 20% safety margin)  
at the highest input voltage and ambient temperatures. Adding external output capacitors  
will improve the unit’s load-transient response.  
N
Includes output short-circuit protection and thermal  
shutdown  
N
Low noise output for powering sensitive instrumentation  
Applications in which 78SR regulators are located more than 24 inches (61cm) from the  
input power supply should include an external 47uF/50V (or greater) aluminum electrolytic  
capacitor, connected as close as possible to the regulator’s +Vin and GND terminals (pins  
1 and 2). An external input capacitor is particularly important if the input voltage is applied  
to the regulator via a mechanical switch or relay. Contact bounce at turn-on can produce  
large inductive current spikes, and these current spikes can generate potentially damaging  
voltage transients at the regulator’s input terminals.  
Ordering Information  
Part No.  
Output  
Voltage  
Output Input  
Current Voltage  
78SR-3.3/2-C  
78SR-5/2-C  
78SRH-3.3/2-C  
78SRH-5/2-C  
3.3Vdc  
5.0Vdc  
3.3Vdc  
5.0Vdc  
2.0A  
2.0A  
2.0A  
2.0A  
8.0-32Vdc  
8.0-32Vdc  
8.0-32Vdc  
8.0-32Vdc  
2. Input Fusing: 78SR switching regulators are not internally fused. If fusing their input and/or  
output terminals is required, use the data shown in the Efficiency Curves as a guide to  
select an appropriate slow-blow fuse.  
For full details go to  
www.murata-ps.com/rohs  
www.murata-ps.com  
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000  
MPM_78SR-2A_B01 Page 1 of 5  
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78SRH-5/2-C 替代型号

型号 品牌 替代类型 描述 数据表
PT78HT205V TI

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