MPDRX312S DATA Sheet 1 DC-DC Converter DATA Sheet MPDRX312S 1. Features ･Ultra high-speed response is realized by using original ripple detecting control. ･Up to 16A output current, non-isolated POL. ･Wide adjustable output voltage range by connecting external resistance (0.8V to 1.8V). ･Wide operating temperature（-40 oC to +85 oC）. ･UVLO function, ON/OFF function, Output voltage sense function, Over-current function and, PowerGood signal output function are built in. 2. Appearance, Dimensions 15.4±0.2 11 P P P P P □□□ ①②③ P 12 27.8±0.2 P ( )…reference value P=2.54 ±0.2mm Tolerance is not accumulated. P P P P P P P P P P P P P SZ M 1 22 4.2max. Marking (1) Pin No.1 Marking / MFG ID (2) Parts No. SZ (3) Lot No. □□□ ①②③ ①Production factory Mark ②Production Year ③Production Month（1,2,3,…9,O,N,D） 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. 2009.8.21 MPDRX312S DATA Sheet 2 Pin Number and Function Pin No. Symbol 2 SENSE 3,4,5 Vout 6,7,8,9, GND 16,17,18 10 FT 11 VAR 12,13,14,15 Vin 1 OVPOUT 19 SS 20 N.C. 21 PWRGOOD 22 ON/OFF Function Output voltage sense Output GND Output trim Output voltage adjustment Input Output Over-voltage Alarm Soft start Non connection Power Good Remote ON/OFF 3. Block Diagram 12,13,14,15 Vout Vin 3,4,5 SENSE 2 16,17,18 22 ON/OFF 21 PG. 20 19 N.C. 1 GND GND VAR Control Unit FT 6,7,8,9 11 10 SS OVPOUT 4. Environmenral Conditions 4.1. Operating Temperature Range 4.2. Storage Temperature Range 4.3. Operating Humidity Range 4.4. Storage Humidity Range -40°C ~ +85°C -40°C ~ +85°C 20% ~ 85% （No water condenses in any cases.） 10% ~ 90% （No water condenses in any cases.） 5. Absolute Maximun Rating Item Minimum Input Voltage SENSE, VAR, FT, ON/OFF, SS PWRGOOD Pin Voltage Maximum POW-GOOD Sink Current Unit V Absolute Rating 0 V Vin mA 1 Remarks No voltage, no matter how instantaneous, shall be applied beyond the absolute maximum voltage rating to this product. If you apply any voltage over this limit the product characteristics will deteriorate or the product itself will be destroyed. Even though it may continue operating for a while after the over-voltage event, its life will likely be shortened significantly. Reliability and life of the module may degrade similarly if the maximum operating voltage rating is continuously exceeded. This product is designed to operate within the maximum operating voltage rating specification. 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. 2009.8.21 MPDRX312S DATA Sheet 3 6. Characteristics 6.1. Electrical Characteristics (Ta=25 oC) Value Item Condition Symbol Unit Min. Typ. Max. 3.0 - 5.5 V Input Voltage Range Vin Rising UVLO Threshold UVLOr Vin Increasing - 2.5 - V Falling UVLO Threshold UVLOf Vin Decreasing - 2.4 - V Output Voltage Adjustable Range FT=Open 0.8 - 0.9 Vout FT=Short 0.9 - 1.8 -3.0 - +3.0 -2.5 - +2.5 Output Voltage Tolerance Vo tol Over Vin, Io, Temperature Range Rset=1% tolerance V Vout=0.8∼0.9V FT=Open Vout=0.9∼1.8V FT=Short %Vo Output Current Iout See the thermal derating curve in section 6.2. 0 - 16 A Ripple Voltage Vrpl Vin =3.3V, Iout=0∼16A BW=20MHz, Cout=100µF - - 100 mV(pp) Vout=0.8V - 73.5 - Vout=1.2V - 79 - Vout=1.8V - 86.5 - Vin =3.3V, Vout=1.8V - 650 - Vin =3.3V, Vout=0.8V - 500 - PWGL Power Good low threshold - 0.87Vo - PWGH Power Good high threshold - 1.13Vo - Efficiency Operating Frequency Power Good EFF Vin =3.3V, Iout=16A Frq % kHz ON/OFF pin is pulled up to Vin inside of the DC-DC converter. If ON/OFF pin is left open, the DC-DC converter shall be “ON”. This pin will be pulled down to GND inside the DC-DC converter when UVLO events occur. Please do NOT connect this pin to power supply with low impedance line, so as not to damage the converter. If ON/OFF pin is connected to GND, the DC-DC Converter OFF 0 0.3 V shall be “OFF”. If output is shorted to GND, DC-DC converter will shut down. After reject the abnormal mode , DC-DC converter will 32 A restart by re-inputting Vin or toggling ON/OFF pin. ON/OFF pin High Voltage VIH ON/OFF pin Low Voltage VIL Short Circuit Protection SCP Over Temperature Protection OTP Reset, Followed by Auto-Recovery External Output Capacitor Cout When input voltage is ideal voltage source Rising Overshoot Vover Startup Delay Td RC Startup Delay Trcd o - 180 - 100 - 1000 µF - 0 +10 % ON/OFF High:Vin Low→High Vo=10% SS= Open 0.1 0.5 2 msec Vin High : ON/OFF Low → High/Open Vo=10% 0.1 0.4 2 msec 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. 2009.8.21 MPDRX312S DATA Sheet 4 6.2. Thermal Derating 温度ディレーティング曲線 Thermal Derating Curve 20 Iout[A］ 16 2.0m/s 1.5m/s 1.0m/s 0.5m/s 0m/s 12 8 4 0 20 30 40 50 60 70 80 85 Ta[℃] The above derating limits apply to this product soldered directly to 101.6*180mm*1.6mm PCB. Any adjacent parts of high temperature may cause overheating. For reliable operation, please ensure that the FET temperature of this product is maintained below 120°C and the inductor temperature is below 106°C. Coil Measurement Point MOSFET Measurement Point M Monitoring Point of Over Temperature Protect 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. 2009.8.21 MPDRX312S DATA Sheet 5 7. Operation information 7.1. Adjusting the Output Voltage The output voltage can be adjusted by connecting resistors between VAR-pin(11Pin) to GND-pin. The following equation gives the required external-resistor values to adjust the output voltage to Vo-adj. It is highly recommended that evaluation of the characteristics of this DC-DC converter’s operation under your board conditions be thoroughly conducted. Internal Circuit MPDRX312S (a)0.8≦ Vout ＜0.9V Vout RVAR＝ 6.8 kΩ VAR pin −1800 [Ω] Vo-adj[V]−0.8[V] (b)0.9≦ Vout ≦1.8V 1.8 kΩ RVAR＝ (FT-pin：SHORT to GND) 5440 −1800 Vo-adj[V]−0.9[V] Error amp RVAR (FT-pin：OPEN) 5440 FT pin <RVAR calculation example> Vo-adj [V] 1.8 1.5 1.2 1.0 0.9 0.8 Calculated RVAR[Ω] 4240 7270 16330 52600 ∞ ∞ RVAR Example FT pin 3.9ｋ＋330 6.8ｋ＋470 16ｋ＋330 47ｋ＋5.6k Open Open Short to GND Short to GND Short to GND Short to GND Short to GND Open 7.2. ON/OFF Control ON/OFF function 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. ON/OFF Control Operation When ON/OFF-pin(22pin) is left open When ON/OFF-pin(22pin) is connected to GND …… …… MPDRX312S example GND ON/OFF or Output Voltage =ON Output Voltage=OFF < Caution> ON/OFF pin is pulled up inside of the DC-DC converter, so voltage appears up to 7V at ON/OFF pin. ON/OFF pin will be pulled down to GND inside the DC-DC converter when UVLO events occur. Please do NOT connect this pin to power supply, so as not to damage the 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. 2009.8.21 [Ω] MPDRX312S DATA Sheet 6 7.3. Output voltage sensing By connecting the SENSE-pin to the load, the output voltage drop due to the PCB wiring may be compensated for (within 10cm). Vout MPDRX312S SENSE Load GND 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. Vout MPDRX312S SENSE Load GND < Caution> Please connect SENSE-pin to Vout-pin nearby the product, if sense function is not used. 7.4. Soft start function By using the soft start function, ramp-rate of the output-starting is adjustable. Adjustment range of ramp-rate is from 2 to 10ms. Ramp rate is adjusted by external capacitor between SS-pin(19pin) and GND. MPDRX312S The equation of starting time about output voltage -8 Starting time:Td＝ （Css+1.2×10 ）×0.8 5×10 -6 -4 +2×10 [s] Css Css：The capacitance of external capacitor.(F) GND 7.5. OVPOUT pin If the output voltage exceeds 20% of the point voltage, the OVPOUT pin sets out the alarm signal (High=5V). For example, in case the drain and source of high-side FET is shorted, the alarm signal appears. There is no set delay time of the alarm signal. Please leave the OVPOUT pin open, when this alarm signal function is not used. Circuit configuration is shown as follow, CMOS inverter output CMOS ｲﾝﾊﾞｰﾀ出力 VREG 200k SGND OUPOUT 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. 2009.8.21 MPDRX312S DATA Sheet 7 7.6. Power Good Powergood signal is appeared within the value of clause 6.1. (Open-drain output). Output voltage is within voltage detection threshold: POW-GOOD is open. Output Voltage is out of voltage detection threshold : POW-GOOD is connected to GND. 7.7. Input External capacitor It is recommended to connect a low-impedance electrolytic capacitor of 100µF or more at Vin terminal. Smaller input capacitor may leads to an unstable operation of this product caused by input voltage fluctuation. Please check the proper operation of it on your product when smaller input capacitor is used. Using ceramic capacitors as input capacitor may cause an increase of output voltage, because input ripple current flows through the external input capacitor and wiring resistance. This phenomenon is affected by the position of external capacitors, the value of external capacitors and voltage difference between Vin and Vout. Using low-impedance electrolytic capacitor will ease this problem. Please check the proper operation of it on your product when ceramic input capacitor is used. MPDRX312S Vin Cin Ripple current Vout Rw×Irpl appears as additional output ripple voltage. Rw Wiring resistance 7.8. 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 within 100µF to 1000µF. Output capacitor shall be placed near the output terminal. When using plural capacitors, please make sure to place a capacitor of at least 100µF near the output terminal, and place other capacitors near the load. When using LC output filter, please make sure to place a capacitor of at least 100µF near the output terminal. 7.9. Parallel Operation This product is incapable of parallel operation. 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. 2009.8.21 MPDRX312S DATA Sheet 8 8. Reliability 8.1. Humidity According to JIS-C-0022. 40 土 2°C, 90 to 95%RH, 100 hours. Leave for 4 hours at room temperature. No damage in appearance and no deviation from electrical characteristics (section 6.1.). 8.2. Temperature Cycles Repeat cycle 5 times. Leave 2 hours at room temp. No damage in appearance and no deviation from electrical characteristics (section 6.1.).. Step Condition Time 1 -40°C±3°C 30 minutes 2 Room Temp. 5-10 minutes 3 +85°C±2°C 30 minutes 4 Room Temp. 5-10 minutes 8.3. Vibration 10 to 55Hz, 1.5mm amplitude (1minute cycle), 1 hour for each of X, Y, Z directions. No damage in appearance and no deviation from electrical characteristics (section 6.1.). 8. 4. Mechanical Shock 20G, 1 time for each X, Y, Z directions. No damage in appearance and no deviation from electrical characteristics (section 6.1.). 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. 2009.8.21 MPDRX312S DATA Sheet 9 9. Test Circuit In the following test circuit, the initial values under item 6.1. should be met. 9.1. General Measure Circuit SENSE 12,13,14,15 Vout Vin C1 2 3,4,5 16,17,18 GND GND RL C2 MPDRX312S 6,7,8,9 RVAR 1 OVPOUT VAR 19 SS FT 20 N.C. 11 10 21 PWRGD 22 ON/OFF C1：100µF／6.3V C2：100µF／6.3V Ceramic Capacitor Ceramic Capacitor Please make sure to place C1 and C2 nearby input and output terminal of DC-DC converter. 9.2. Ripple Noise Measurement Circuit Coaxial cable :1.5D-2V, L=1.5m Oscilloscope BW：20MHz Vout DC-DC Converter GND Terminator （Keisokugiken TRC-50F) Ceramic Capacitor Equivalent circuit R：50Ω C：0.01µF A: Ripple Noise Voltage B: Ripple Voltage B A C: Switching Period 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. 2009.8.21 MPDRX312S DATA Sheet 10 24.0±0.1 4.0±0.1 (29.4) 20.2±0.1 2.0±0.15 (4.6) 0.4±0.05 44.0±0.3 +0.1 -0 40.4±0.1 1.5 1.75±0.1 10. Packaging Specification 10.1. Emboss Tape Dimensions (16) Pulling direction +0.1 -0 +0.1 -0 1.7 0.2 1.5 10.2. Real Dimension 49.4±1.0 45.4±1.0 φ100±1 φ330±2 A 2.0±0.5 表示 Indication φ21.0±0.8 φ13.0±0.5 A部詳細図 Portion A 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. 2009.8.21 MPDRX312S DATA Sheet 11 10.3. Taping Specification 未実装部 Epmty portion (200mm MIN) 未実装部 Epmty portion (200mm MIN) リーダー部 Leader portion (200mm MIN) 部品収納部 "Module on tape" portion 表示 Indication 1pin 引き出し方向 Pulling direction モジュールは部品面を上側、基板面を下側に配置します。 The module is located such as parts in upper side and PCB in lower side. 10.4. Note 1. The adhesive strength of the protective tape must be within 0.1-1N. 2. Each reel contains 300pcs. 3. The deficiency per reel is 0 piece. 4. The reel shows customer part number, Murata part number and quantity. 5. The color of reel is not designated. 11. Production factory Komatsu Murata Mfg.Co., Ltd. Kanazu Murata Mfg. Co., Ltd. Wakura Murata Mfg. Co., Ltd. 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. 2009.8.21 MPDRX312S DATA Sheet 12 12. Typical Characteristics Data 12.1. Load Transient Response Our original ripple-detective control method achieves much better load transient responses. Vin=5.0V, Vo=1.8V(Fig.12-1a) , 0.8V(Fig.12-1b) Io=8A ->16A, di/dt=1A/us, Cout=100uF(Ceramic), Ta=25 oC 50mV/div Vout 50mV/div Vout Iout Iout 100us/di v 100us/di v Fig.12-1a. Load Transient Response (Vout:1.8V) Fig.12-1b.Load Transient Response (Vout:0.8V) 12.2. Output Impedance characteristics Our original ripple-detective control method achieves very low output impedance in wide frequency range. MPDRX312S RX301S/302S Output Impedance Conventional PMW Product's Output Impedance 100 40 80 30 Zo [mohm] Zo[mOhm] 50 20 10 60 40 20 0 0.1 1 10 100 Frquency[kHz] Fig.12-2-1. Output Impedance of MPDRX312S 0 0.01 0.1 1 10 100 Frequency [kHz] Fig.12-2-2. Output Impedance of conventional 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. 2009.8.21 MPDRX312S DATA Sheet 13 12.3. Other electrical characteristics 12.3.1. Vout=1.8V （Ta=25 oC, Cin= GRM32EB30J107ME16, Cout= GRM32EB30J107ME16, RVAR=4240Ω） Efficiency 1.85 95 1.84 90 1.82 85 Eff [%] Vo1 [V] Load Regulation 1.80 80 1.78 75 1.76 70 1.75 0 2 4 6 8 10 12 14 16 Io [A] Vin=3V Vin=5V Vin=3.3V Vin=5.5V Vin=4.5V Fig.12-3-1. Output Voltage v.s. Output Current 0 2 4 6 8 10 12 14 16 Io [A] Ta=25℃ Vin=3V Ta=25℃ Vin=4.5V Ta=25℃ Vin=5.5V Ta=25℃ Vin=3.3V Ta=25℃ Vin=5V Fig.12-3-2. Efficiency v.s. Output Current Output ripple voltage 50 Vr1(full) [mVp-p] 40 30 20 10 0 0 2 4 6 8 10 12 14 16 Io [A] Vin=3V Vin=5V Vin=3.3V Vin=5.5V Vin=4.5V Fig.12-3-3. 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. 2009.8.21 MPDRX312S DATA Sheet 14 12.3.2. Vout=1.2V （Ta=25 oC, GRM32EB30J107ME16, Cout= GRM32EB30J107ME16, RVAR=16330Ω） Efficiency Load Regulation 95 1.22 90 1.21 85 Eff [%] Vo1 [V] 1.24 1.20 80 1.19 75 1.18 70 1.16 0 2 4 6 8 10 12 14 16 Io [A] Vin=3V Vin=5V Vin=3.3V Vin=5.5V 0 2 4 6 8 Ta=25℃ Vin=3V Ta=25℃ Vin=4.5V Ta=25℃ Vin=5.5V Vin=4.5V Fig.12-3-4. Output Voltage v.s. Output Current 10 12 14 16 Io [A] Ta=25℃ Vin=3.3V Ta=25℃ Vin=5V Fig.12-3-5. Efficiency v.s. Output Current Output ripple voltage 50 Vr1(full) [mVp-p] 40 30 20 10 0 0 2 4 6 8 10 12 14 16 Io [A] Vin=3V Vin=5V Vin=3.3V Vin=5.5V Vin=4.5V Fig.12-3-6. 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. 2009.8.21 MPDRX312S DATA Sheet 15 12.3.3. Vout=0.8V （Ta=25 oC, GRM32EB30J107ME16, Cout= GRM32EB30J107ME16, RVAR=OPEN） Efficiency Load Regulation 0.82 95 0.82 90 Eff [%] Vo1 [V] 0.81 0.80 85 80 0.79 75 0.78 70 0.78 0 0 2 4 6 8 10 12 14 16 Vin= 3.3V Vin= 5.5V 4 6 8 10 12 14 16 Io [A] Io [A] Vin= 3V Vin= 5V 2 Vin= 4.5V Fig.12-3-7. Output Voltage v.s. Output Current Ta=25℃ Vin=3V Ta=25℃ Vin=4.5V Ta=25℃ Vin=5.5V Ta=25℃ Vin=3.3V Ta=25℃ Vin=5V Fig.12-3-8. Efficiency v.s. Output Current Output ripple voltage 50 Vr1(full) [mVp-p] 40 30 20 10 0 0 2 4 6 8 10 12 14 16 Io [A] Vin =3 V Vin =5 V Vin= 3 .3 V Vin= 5 .5 V Vin = 4 .5 V Fig.12-3-9. 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. 2009.8.21 MPDRX312S DATA Sheet 16 13. Mounting Condition 13.1. PCB Land Pattern Recommendation 2.8 1.0 1.2 2.54 4.3 1.5 9.0 5.0 unit [mm] 13.2. 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 Reflow Soldering Profile JEDEC IPC/JEDEC J-STD-020D Table 5-2 Classification Reflow Profile Pb-Free Assembly Large Body Profile details Soldering temperature Soldering time Heating time Preheating time Programming rate Descending rate Total soldering time Times : : : : : : : : 245ºC+0/-5ºC 30 seconds, 240 to 245ºC 60 to 150 seconds, over217ºC 60 to 120 seconds,150 to 200ºC 3ºC/ sec. Max., 217 to 245ºC 6ºC/ sec. Max. 8 minutes Max., 25 to 245ºC 1 time 245oC Parts surface temperature [ºC] 217 oC 200 oC 60∼150 (seconds) 150oC 60∼120 (seconds) 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 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 DC-DC Converter specifications or transact the approval sheet for product specifications before ordering. 2009.8.21 MPDRX312S DATA Sheet 17 14. Notice 14.1. 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. 14.2. Please make the power line pattern as wide and short as possible. 14.3. 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. 14.4. 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. 14.5. Inrush current protection is not a feature of this product. 14.6. 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. 14.7. Cleaning Please use no-cleaning type flux and do not wash this product. 14.8. Storage 14.8.1. Please store the products in room where the temperature/humidity is stable and direct sunlight cannot come in, and use the products within 6 months after delivery. Please avoid damp and heat or such places where the temperature greatly changes, as water may condense on this product, and the quality of characteristics may be reduced, and/or be the solderability may be degraded. If this product needs to be stored for a long time (more than 1 year), this product may be degraded in solderability and/or corroded. Please test the solderability of this product regularly. Baking before reflow process is unnecessary to store the products under 30℃,60%RH or less up to 6 months. In case the storage condition is over above mentioned, if these are unpacked condition, please bake them at 125℃±5℃/24hour. If these are packed in a tape, please bake them before soldering at 60℃±5℃ /168hour. 14.8.2. Please do not store this product in places such as : A dusty place, a place exposed directly to sea breeze, or in an atmosphere containing corrosive gas (Cl2,NH3,SO2,NOX and so on). 14. 9. Operational Environment and Operational Conditions 14.9.1. Operational Environment This product is not water-, chemical- or corrosion-proof. In order to prevent leakage of electricity and abnormal temperature rise of the product,do not operate under the following environmental conditions: (1) An atmosphere containing corrosive gas (Cl2, NH3, SO2, NOX and so on) (2) A high-dust environment (3) Under the exposure of direct sunlight (4) A location where the likelihood of exposure to water or water condensation exists. (5) A location exposed to ocean air (6) Any locations similar to the above 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. 2009.8.21 MPDRX312S DATA Sheet 18 14.9.2. Operational Conditions Please use this product within specified values (power supply, temperature, input, output and load condition, and so on). If the product is exposed to conditions outside of the specified values reliability of the product may be adversely effected. 14.9.3. Note prior to use Diminished reliability and/ or failure may result if the product is exposed to a high-level static charge, over-rated voltage or reverse voltage. Please avoid the following conditions be avoided prior to use of the product: (1) Supply of power outside of rated values (see section 8) (2) Supply of reverse power or inadequate connection of a 0 V(DC)line (3) Electrostatic discharge from production line and/ or operator (4) Electrification of the product from electrostatic induction (5) Excessive mechanical shock 14.10. Transportation Murata recommends that when transporting this product, it be packed so as to avoid damage by mechanical vibration or exposure to adverse conditions such as ocean air, high humidity. It is additionally recommended that appropriate instructions and guidelines be communicated to carriers to prevent exposure to these same conditions. ! Note 1. Murata recommends that customers ensure that the evaluation and testing of these devices are completed with this product actually assembled on their product. 2. 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. 3. This data sheet 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. 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. 2009.8.21