- 您现在的位置：买卖IC网 > PDF目录63649 > 7805SRH (MURATA POWER SOLUTIONS INC) 1-OUTPUT DC-DC REG PWR SUPPLY MODULE PDF资料下载
参数资料
| 型号： | 7805SRH |
| 厂商： | MURATA POWER SOLUTIONS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 1/5页 |
| 文件大小： | 1391K |
| 代理商： | 7805SRH |
MPM_78SR_G00 Page 1 of 5
D I G I T A L P A N E L M E T E R S
78xxSR Series
3.3V/5V/12V Outputs High-Efciency
Switching Regulators with LM78xx Pinouts
DATEL’s 7805SR (5V output), 7812SR (12V output) and 7803SR (3.3V output) step-
down switching regulators are modern drop-in replacements for older, inefcient, LM7805
and LM7812 linear regulators. The 78XXSR's are pin- and size-compatible with industry-
standard TO-220 SIP packages. A 260kHz switching frequency provides for efciencies as
high as 95%. Full-load (up to 0.5A) operation from 9V, 12V, 24V, or 36V supplies at ambient
temperatures up to +70°C requires no heat sinks, no temperature derating, no forced-air
cooling, and no external capacitors.
78SR switching regulators provide many signicant improvements over their linear
counterparts: lower quiescent current (3mA vs. 5 mA), higher input voltage (40V vs. 32V),
and better output accuracy (±1.5% vs. ±5%). All these features combine to make 78SR
regulators ideal for new or existing LM7805 & LM7812 applications requiring full-load
operation at elevated voltages.
FEATURES
■
3.3V/0.5A, 5V/0.5A or 12V/0.4A outputs; Pin and size-
compatible with LM7805 & LM7812 regulators
■
Up to 95% efciency – no heat sinks or thermal
derating required!
■
Two SIP-packages t existing TO-220 footprints:
Vertical-pin models occupy less than 0.1 square in.
Optional horizontal pins provide 0.350 in. installed
height
■
+7.5-36Vdc operating input range; Low 3mA
quiescent current
■
Built-in lter capacitors – no external components
required
■
–40 to +70°C operation at full load; Short-circuit
protection
■
Excellent load (±0.2%) and line (±0.3%) regulation
■
Ideal for powering instrumentation from
9V/12V/24V/28V supplies or batteries
■
Can be used with unregulated dc supplies protection
TECHNICAL NOTES
1. Input/Output (I/O) Filtering:
As shown in the noise and ripple graphs, 78SR switch-
ing regulators exhibit excellent low-noise performance with no external I/O capacitors.
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
system voltages and temperatures. Adding external output capacitors will also improve
the unit’s load-transient response.
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 damaging voltage
transients at the regulator’s input terminals.
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
selecting an appropriate slow-blow fuse.
3. Input-Output Isolation:
78SR regulators’ internal input and output circuits share a
common connection (GND, pin 2); there is no electrical isolation between the INPUT (pin
1) and OUTPUT (pin 3) terminals.
4. Overvoltage Protection:
78SR switching regulators do not provide input or output over-
voltage protection. In the extremely rare situation in which a catastrophic failure occurs,
the output voltage may rise to excessively high levels. If your load must be protected
against all possible overvoltage situations, external voltage-limiting circuitry
must be provided.
5. Operation at 40Vdc:
Operating with inputs up to 40Vdc is permissible if, for inputs
between 36 and 40Vdc, the maximum load current is reduced to 0.35A for 7805SR and
7803SR, and to 0.3A for 7812SR. Under no circumstances should the input voltage be
allowed to exceed 45Vdc.
DATEL Part No.
Output
Input
Voltage
Current
Voltage
Standard Pin Package
7803SR
+3.3Vdc
0.5A
+7.5-36Vdc
7805SR
+5.0Vdc
0.5A
+7.5-36Vdc
7812SR
+12.0Vdc 0.4A
+15-36Vdc
Horizontal Pin Package
7803SRH
+3.3Vdc
0.5A
+7.5-36Vdc
7805SRH
+5.0Vdc
0.5A
+7.5-36Vdc
7812SRH
+12.0Vdc 0.4A
+15-36Vdc
Ordering Information
For updated, full-size data sheets visit: www.cd4power.com
For full details go to
www.cd4power.com/rohs
相关PDF资料 |
PDF描述 |
|---|---|
| 7812SRH | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 7805SR | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 7805SRH-C | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 7803SRH-C | 1-OUTPUT 1.65 W DC-DC REG PWR SUPPLY MODULE |
| 7805SR-C | 1-OUTPUT 2.5 W DC-DC REG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 7805SRH-C | 功能描述:DC/DC转换器 SW0.5A 7.5V-36Vto5V RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| 7806 | 功能描述:端子 HORIZ .250X.032 HDRS RoHS:否 制造商:AVX 产品:Junction Box - Wire to Wire 系列:9826 线规:26-18 接线柱/接头大小: 绝缘: 颜色:Red 型式:Female 触点电镀:Tin over Nickel 触点材料:Beryllium Copper, Phosphor Bronze 端接类型:Crimp |
| 7806/Q-EU | 制造商:未知厂家 制造商全称:未知厂家 功能描述:AIR DRILL PISTOL 13MM |
| 78-060 | 功能描述:C-CL XHD 6-5/8 STD SCR 制造商:apex tool group 系列:* 零件状态:在售 标准包装:1 |
| 780-60103-1 | 制造商:Thomas & Betts 功能描述:VTRUCK7CIRCUIT |
发布紧急采购，3分钟左右您将得到回复。