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（-40 oC 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 8.5 +/- 0.4 Top View □□ ①② Marking □□ ③④ (1) Pin No.1 Side Marking 5.6 max. X N (2) Parts Number (3) Manufacturer ID (4) Lot No. XN □□ □□ ①② ③④ 8.4 Terminal sape 3 6 2 7 1 8 0.4 5 0.5 1.6 4 0.5 ① Production Year ② Production Month（1,2,3,…9,O,N,D） 1.55 P ③④ Production Control Marking 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 1 TRIM 2 Vout 3,5 GND 4 +SENSE 6 ON/OFF 7 Vin 8 Pgood Function Output voltage adjustment Output GND Output voltage sense Remote ON/OFF Input Power good output 3. Block Diagram Vout Vin 2 7 +SENSE 4 3 5 GND GND 6 １ Control Circuit ON/OFF TRIM 8 Pgood 4. Test Circuit Pgood 10kΩ Pgood Vin ８ 7 2 4 MYUSP3R303FMP Vin Cin: 47µF ON/OF 1 6 Vcont +SENSE RL TRIM Cout: 1µF Rtrim 3 5 GND Cin ：47µF／6.3V Cout ：1µF／10V Vout GND 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 Input Voltage Range Condition Symbol Vin Vin=3.0V-5.5V Note： Unit Min. Typ. Max. 3.0 - 5.5 V 0.7 - 3.3 V -3.0 - +3.0 %Vo 0 - 3 A Output Voltage Adjustable Range Vout Output Voltage Tolerance Vo tol Output Current Iout Ripple Voltage Vrpl Vin=5V, Vout=1.2V, Iout=3A BW =20MHz, - - 80 mV(pp) Efficiency EFF Vin =5V, Vout=3.3V, Iout=1A - 94 - % ON/OFF pin High Voltage VIH ON 2.0 - Vin V ON/OFF pin Low Voltage VIL OFF 0 - 0.8 V Short Circuit Protection SCP Power Good Detection Theshold Vpg Soft Start Time TSS 2 4 8 msec Timer Latch Mask Time Tlatch 0.5 1 2 msec VinMin.=Vout+1.2V at Vout≧1.6V Over Vin,Temperature range Rset=0.5% tolerance Io=5mA∼3A See the thermal derating curve in section 5.2. 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. %Vo -10 *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 Rtrim ＝ TRIM pin 2000Ω Rtrim 7000 Vout - 0.7 − 2000 [Ω] Error amp <Rtrim Calculation Example> Vout(V) 3.3 2.5 1.8 1.5 1.2 1.0 0.8 0.7 Calculated Rtrim(Ω) 692.3 1888.9 4363.6 6750 12000 21333.3 68000 ∞ Rtrim Example(Ω) 680 + 12 1500 + 390 3900 + 470 5600 + 1200 12000 18000 + 3300 + 33 68000 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 MYUSP3R303FMP SENSE GND Vout MYUSP3R303FMP Load SENSE Load 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) 2ms/div Fig.7-2-1. Start-up Waveform (Io=0A) Vout(0.1V/div) Iout(1A/div) 10us/div Fig.7-2-3. Load Transient Response (Io=1.5->3A) Vout(0.5V/div) 2ms/div Fig.7-2-2. Start-up Waveform (Io=3A) Vout(0.1V/div) Iout(1A/div) 10us/div 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) 2ms/div Fig.7-2-1. Start-up Waveform (Io=0A) Vout(0.5V/div) 2ms/div Fig.7-2-2. Start-up Waveform (Io=3A) Vout(0.1V/div) Vout(0.1V/div) Iout(1A/div) Iout(1A/div) 10us/div Fig.7-2-3. Load Transient Response (Io=1.5->3A) 10us/div 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 1.0 6.2 1.8 2.4 0.8 6.0 2.4 10.8 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 Profile details Soldering temperature Soldering time Preheating Programming rate Times : Full convection reflow soldering : : : : : 245ºC+0/-5ºC 20 to 60 seconds, over220ºC 60 to 150 seconds,150 to 200ºC 3ºC/ sec. Max., 217 to 245ºC 1 time 245℃ 220℃ Parts surface temperature [ºC] 200℃ (20∼60seconds) 150℃ (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 + + + diode IN - OUT Load - ※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