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MYUSP3R303FMP

型号：

MYUSP3R303FMP

品牌：

MURATA[ muRata ]

页数：

15 页

PDF大小：

845 K

下载PDF手册
MYUSP3R303FMP Application  
1
DC-DC Converter Application Manual  
MYUSP3R303FMP  
1. Features  
･Ultra small size foot print (8.5mm×11.0mm), 3A output current, non-isolated POL.  
･Wide adjustable output voltage range by connecting external resistance (0.7V to 3.3V).  
･Wide operating temperature（-40oC to +85 oC）.  
･UVLO function, ON/OFF function, P-GOOD function, Output voltage sense function, Over-current function and,  
Over-temperature function are built in.  
2. Appearance, Dimensions  
11.0 +/- 0.4  
Top View  
□□  
①②  
□□  
③④  
Marking  
X
N
(1) Pin No.1 Side Marking  
(2) Parts Number  
(3) Manufacturer ID  
(4) Lot No.  
XN  
□□ □□  
①② ③④  
8.4  
Terminal sape  
1.6  
① Production Year  
4
3
2
1
5
6
7
8
② Production Month（1,2,3,…9,O,N,D）  
③④ Production Control Marking  
0.5  
Bottom View  
1.3  
Lead pitch P:1.8 +/- 0.2 [unit:mm]  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
2
Pin Number and Function  
Pin No.  
Symbol  
TRIM  
Function  
Output voltage adjustment  
Output  
1
2
Vout  
3,5  
4
GND  
GND  
+SENSE  
ON/OFF  
Vin  
Output voltage sense  
Remote ON/OFF  
Input  
6
7
8
Pgood  
Power good output  
3. Block Diagram  
Vout  
Vin  
2
4
7
+SENSE  
3
5
GND  
GND  
6
8
１
Control Circuit  
ON/OFF  
Pgood  
TRIM  
4. Test Circuit  
Pgood  
RL  
Pgood  
10kΩ  
Vout  
Vin  
８
2
4
7
+SENSE  
TRIM  
MYUSP3R303FMP  
ON/OF  
Vcont  
Vin  
Cout: 1µF  
Cin: 47µF  
1
6
Rtrim  
3
5
GND  
GND  
Cin ：47µF／6.3V  
Cout ：1µF／10V  
Ceramic Capacitor  
Ceramic Capacitor  
Please make sure to place Cin and Cout nearby input and output terminal of DC-DC converter.  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
3
5. Characteristics  
5. 1 Electrical Characteristics (Ta=25 oC)  
Value  
Item  
Condition  
Unit  
V
Symbol  
Min.  
3.0  
Typ.  
-
Max.  
5.5  
Input Voltage Range  
Vin  
Vin=3.0V-5.5V  
Note：  
Output Voltage  
Adjustable Range  
Vout  
0.7  
-
3.3  
V
VinMin.=Vout+1.2V at Vout≧1.6V  
Over Vin,Temperature range  
Rset=0.5% tolerance  
Io=5mA～3A  
-3.0  
-
-
-
+3.0  
3
%Vo  
A
Output Voltage Tolerance  
Output Current  
Vo tol  
Iout  
See the thermal derating curve  
in section 5.2.  
0
-
Vin=5V, Vout=1.2V, Iout=3A  
BW =20MHz,  
Vrpl  
80  
mV(pp)  
Ripple Voltage  
EFF  
VIH  
VIL  
Vin =5V, Vout=3.3V, Iout=1A  
-
2.0  
0
94  
-
-
%
V
Efficiency  
ON  
OFF  
Vin  
0.8  
ON/OFF pin High Voltage  
ON/OFF pin Low Voltage  
-
V
When a short circuit state continues, the product becomes the latch up mode and  
stops.. After correction of the abnormal condition, the DC-DC Converter will restart  
by re-inputting Vin or toggling On/Off pin.  
SCP  
Short Circuit Protection  
Power Good Detection  
Theshold  
Vpg  
TSS  
-10  
4
%Vo  
msec  
msec  
Soft Start Time  
2
8
2
Timer Latch Mask Time  
Tlatch  
0.5  
1
*Power Good Detection output is sent when the DC-DC converter begins the output operation ( when the output voltage  
reaches a threshold voltage of Power Good Detection shown in 9.1.3.). PGOOD pin is open drain output  
DC-DC converter is operating  
: PGOOD-PIN is open.  
DC-DC converter is not operating :PGOOD-PIN is pull down to GND internally.  
!
Caution  
The above electrical characteristics are guaranteed with the condition that the impedance of the input voltage source is sufficiently  
low as shown in section 4. Connecting an input inductance or using an input power supply with output inductance may cause an  
unstable operation of this device. Please check the proper operation of this device with the peripheral circuits on your system.  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
4
5. 2 Thermal Derating  
Thermal Derating  
①②③④⑤⑥  
①
④
②
⑤
③
⑥
The above derating limits apply to this product soldered directly to 101.6*180mm*1.6mm PCB (double-sided, with 70um  
copper). Any adjacent parts of high temperature may cause overheating. For reliable operation, please ensure that the IC  
temperature of this product is maintained below 120°C and the inductor temperature is below 119°C.  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
5
6. Pin Description  
6.1. Adjusting the Output Voltage  
The output voltage can be adjusted from 0.7V to 3.3V by connecting resistors between TRIM-pin(1Pin) to GND-pin(Pin 3 is  
recommended for accurate Vout setting).  
The following equation gives the required external-resistor values to adjust the output voltage to the required Vout.  
It is highly recommended that evaluation of the characteristics of this DC-DC converter’s operation under your board  
conditions be thoroughly conducted.  
Vout  
Internal circuit  
10kΩ  
7000  
Vout  
[Ω]  
Rtrim  
＝
2000  
－
- 0.7  
TRIM pin  
2000Ω  
Error amp  
Rtrim  
<Rtrim Calculation Example>  
Vout(V)  
3.3  
Calculated Rtrim(Ω)  
692.3  
Rtrim Example(Ω)  
680 + 12  
2.5  
1888.9  
4363.6  
6750  
1500 + 390  
3900 + 470  
5600 + 1200  
12000  
1.8  
1.5  
1.2  
12000  
1.0  
21333.3  
68000  
18000 + 3300 + 33  
68000  
0.8  
0.7  
∞
Open  
6. 2. ON/OFF Control  
Using the ON/OFF feature, the operation of this product can be disabled without removal of the input voltage. Sequencing  
of a power supply system and power-saving control can be easily achieved using this function.  
When ON/OFF-pin(6pin) is connected to Vin …… Output Voltage =ON  
When ON/OFF-pin(6pin) is connected to GND …… Output Voltage =OFF  
6.3. Output Voltage Sensing  
By connecting SENSE-pin to the load, output voltage drop in wiring shall be compensated.  
Please do NOT connect SENSE-pin to the output of LC filter that is set to the Vout line.  
When using this way, this product will not operate properly.  
< Caution>  
Vout  
Vout  
MYUSP3R303FMP  
MYUSP3R303FMP  
SENSE  
SENSE  
Load  
Load  
GND  
GND  
Please connect SENSE-pin to Vout-pin nearby the product, if sense function is not used.  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
6
6.4. Input External capacitor  
It is recommended to connect Ceramic capacitor of 47uF or more between Vin terminal(7pin) and GND(5pin). But  
according to Fig6-4, it can smaller capacity value by a combination of input voltage and output voltage.  
But smaller input capacitor may leads to an unstable operation of this product caused by input voltage fluctuation. When  
the impedance of input line is enough small, smaller input capacitor can be applied after checking the stable operation on  
your product.  
Please place the input capacitor as close as possible to this product.  
Long wiring between the input capacitor and this product may lead to increased radiation noise and unstable operation of  
this product.  
Fig6-4 Input external capacitor by the combination of input voltage and output voltage.  
（When Slew Rate of the output current is less than 1A/µs.）  
6.5. Output External capacitor  
Ceramic capacitors are recommended as output external capacitor.  
Using ceramic capacitors, small output variation and small ripple voltage are realized.  
Output capacitor should be 300uF or less. Output capacitor shall be placed near the output terminal.  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
7
7. Typical Characteristics Data  
7.1. Static Electrical Characteristics  
Vout=1.0V  
（Ta=25 oC, Cin= GRM32EC80J476K, Cout= GRM216B11A105K, Rtrim=21333Ω）  
Fig.7-1-1. Output Voltage v.s. Output Current  
Fig.7-1-2. Efficiency v.s. Output Current  
Fig.7-1-3. Ripple Voltage v. s. Output Current  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
8
Vout=1.2V  
（Ta=25 oC, Cin= GRM32EC80J476K, Cout= GRM216B11A105K, Rtrim=12000Ω）  
Fig.7-1-4. Output Voltage v.s. Output Current  
Fig.7-1-5. Efficiency v.s. Output Current  
Fig.7-1-6. Ripple Voltage v. s. Output Current  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
9
Vout=1.8V  
（Ta=25 oC, Cin= GRM32EC80J476K, Cout= GRM216B11A105K, Rtrim=4370Ω）  
Fig.7-1-7. Output Voltage v.s. Output Current  
Fig.7-1-8. Efficiency v.s. Output Current  
Fig.7-1-9. Ripple Voltage v. s. Output Current  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
10  
Vout=3.3V  
（Ta=25 oC, Cin= GRM32EC80J476K, Cout= GRM216B11A105K, Rtrim=692Ω）  
Fig.7-1-10. Output Voltage v.s. Output Current  
Fig.7-1-11. Efficiency v.s. Output Current  
Fig.7-1-12. Ripple Voltage v. s. Output Current  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
11  
7.2. Dynamic Electrical Characteristics  
Vin=3.3V, Vout=1.2V  
（Ta=25 oC, Cin= GRM32EC80J476K, Cout= GRM216B11A105K, Rtrim=12000Ω）  
ON/OFF(2V/div)  
ON/OFF(2V/div)  
Vout(0.5V/div)  
Vout(0.5V/div)  
2ms/div  
2ms/div  
Fig.7-2-1. Start-up Waveform (Io=0A)  
Fig.7-2-2. Start-up Waveform (Io=3A)  
Vout(0.1V/div)  
Vout(0.1V/div)  
Iout(1A/div)  
10us/div  
Iout(1A/div)  
10us/div  
Fig.7-2-3. Load Transient Response  
(Io=1.5->3A)  
Fig.7-2-4. Load Transient Response  
(Io=3->1.5A)  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
12  
Vin=5.0V, Vout=1.2V  
（Ta=25 oC, Cin= GRM32EC80J476K, Cout= GRM216B11A105K, Rtrim=12000Ω）  
ON/OFF(2V/div)  
ON/OFF(2V/div)  
Vout(0.5V/div)  
Vout(0.5V/div)  
2ms/div  
2ms/div  
Fig.7-2-1. Start-up Waveform (Io=0A)  
Fig.7-2-2. Start-up Waveform (Io=3A)  
Vout(0.1V/div)  
Vout(0.1V/div)  
Iout(1A/div)  
10us/div  
Iout(1A/div)  
10us/div  
Fig.7-2-3. Load Transient Response  
(Io=1.5->3A)  
Fig.7-2-4. Load Transient Response  
(Io=3->1.5A)  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
13  
8. Mounting Condition  
8. 1 PCB Land Pattern Recommendation  
8.4  
１PIN  
1.8  
1.8  
6.2  
1.0  
0.8  
1.8  
6.0  
10.8  
2.4  
2.4  
8. 2 Recommended Soldering Conditions  
Reflow Soldering  
This product is RoHS compliant. The following profile is recommended for the reflow of this  
product using Pb-free solder paste (Sn-Ag-Cu).  
Method  
:
Full convection reflow soldering  
Profile details  
Soldering temperature  
:
245ºC+0/-5ºC  
Soldering time  
Preheating  
Programming rate  
Times  
:
:
:
:
20 to 60 seconds, over220ºC  
60 to 150 seconds,150 to 200ºC  
3ºC/ sec. Max., 217 to 245ºC  
1 time  
245  
℃
220  
℃
200  
150  
℃
Parts surface temperature [ºC]  
(20～60seconds)  
℃
(60～150seconds)  
Times  
※Do not vibrate for the products on reflow.  
Please need to take care temperature control because mounted parts may come off if the product are left  
under the high temperature.  
Do not reflow DC-DC converter as follows, because DC-DC converter may fall down from a substrate  
during reflowing.  
Substrate  
DC-DC Converter  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
14  
9. Notice  
PCB Design  
① Both input-side and output side, please make the wiring loop between plus and minus as small as possible.  
The influence of a leakage inductance can be reduced.  
② Please place Rtrim ( resistor for output voltage setting ) such as it connects 1pin and 3pin.  
③ Please make the power line pattern as wide and short as possible.  
The Following figure is an example of recommendable PCB design.  
Rtrim  
Vout  
Vin  
GND  
Output Capacitor  
Input Capacitor  
This product should not be operated in parallel or in series.  
Please do not use a connector or a socket to connect this product to your product.  
The electric characteristics may be deteriorated by the influence of contact resistance.  
Be sure to provide an appropriate fail-safe function on your product to prevent secondary damage  
that may be caused due to abnormal functional or failure of this product.  
Inrush current protection is not a feature of this product.  
Please connect the input terminals with the correct polarity. If an error in polarity connection is made this  
product may be damaged. If this product is damaged internally, an elevated input current may flow, and so  
this product may exhibit an abnormal temperature rise, or your product may be damaged.  
Please add a diode and fuse per the following diagram to protect them.  
fuse  
+
+
+
Load  
OUT  
diode  
IN  
-
-
※Please select diode and fuse after confirming the operation of your product.  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
MYUSP3R303FMP Application  
15  
!
Note  
１. Please contact our main sales office or nearby sales office before using our products for the applications  
listed below which require especially high reliability for the prevention of defects which might directly  
cause damage to the third party’s life, body or property or this products for any other applications that  
described in the above.  
①Aircraft equipment  
②Aerospace equipment  
③Undersea equipment  
④Power plant control equipment  
⑤Medical equipment  
⑥Transportation equipment (vehicles, trains, ships, etc.)  
⑦Traffic signal equipment  
⑧Disaster prevention /crime prevention equipment  
⑨Data-processing equipment  
⑩Application of similar complexity and/or reliability requirements to the applications listed in the above.  
２. This catalog is indicated in March 2009. About the written contents, since changing without a preliminary  
announcement for improvement and supply are sometimes stopped, please confirm in case of ordering.  
If written contents are unknown, please ask to our main sales office or nearby sales office.  
３. Types and specification in this catalog are referenced for your information only. Please confirm detailed  
specifications by approving our individual drawing and specification sheet.  
Note:  
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our  
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.  
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product  
specifications or transact the approval sheet for product specifications before ordering.  
2009.9.14  
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