LV58063MX-TLM-H

Ordering number : ENA1762A Bi-CMOS IC LV58063MX Step-down Switching Regulator Overview LV58063MX is a 1ch step-down switching regulator. 0.13Ω FET is incorporated on the upper side to achieve high-efficiency operation for large output current. Low-heat resistance and compact-package MFP8 (200mil) employed. Current mode control type, with superior load current response and easy phase compensation ON/OFF pin, allowing the standby mode with the current drain of 100μA Pulse-by-pulse over-current protection and overheat protection available for protection of load devices Soft start pin to be provided with a capacitance for soft start. Functions • 3A 1ch step-down switching regulator • Wide input dynamic range ( to 28V) • High efficiency (90% IOUT = 1A, VIN = 12V, VO = 5V) • Standby mode • Over-current protection • Overshoot control function • Thermal shutdown • Reference voltage: 0.8V • Fixed frequency: 370kHz • Soft start • Compact package: MFP8 (200mil) with Exposed Pad Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum input VIN voltage VIN max 32 V BOOT pin maximum voltage VBT max 37 V SW pin maximum voltage VSW max VIN max V BOOT pin-SW pin maximum voltage VBS-SW max 7 V FB, EN, COMP, SS pin maximum Vfs max Allowable power dissipation Pd max Junction temperature Tj max 150 °C Operating temperature Topr -20 to 80 °C Storage temperature Tstg -40 to 150 °C Mount on a specified board * 7 V 2.05 W * Specified board: 46.4mm × 31.8mm ×1.7mm, glass epoxy. Note: Plan the maximum voltage while including coil and surge voltages, so that the maximum voltage is not exceeded even for an instant. Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. 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To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 62510 SY/52610 SY 20100518-S00003 No.A1762-1/5 LV58063MX Recommended Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings Unit VIN pin voltage VIN 8 to 28 BOOT pin voltage VBT -0.3 to 34 V V SW pin voltage VSW -0.4 to VIN V BOOT pin-SW pin maximum VBS-SW 6.5 V 6 V voltage FB, EN, COMP, SS pin voltage VFSO Electrical Characteristics at Ta = 25°C, VIN = 12V, unless otherwise specified. Parameter Symbol Conditions IC current drain at standby ICC1 EN=0V IC current drain in operation ICC2 EN=OPEN, FB=1V Efficiency Effcy VIN=12V, IOUT=1A, Vo=5V, Design target *1 Reference voltage Vref VIN=8V to 28V (±2%) FB pin bias current Iref FB=0.8V application High-side ON resistance RonH BOOT=5V Low-side ON resistance RonL Oscillation frequency fOSC Oscillation frequency during short-circuit protection fOSCS EN high-threshold voltage Venh EN low-threshold voltage Venl EN pull-up corrent IEN Maximum ON DUTY D max Current limit peak value Icl1 VIN=12V, VOUT=5V, L=10μH Thermal shutdown temperature Ttsd Thermal shutdown temperature hysteresis Soft start current Ratings min typ Unit max 70 μA 5 mA 90 - 2% % 0.8 + 2% V 10 100 nA 0.13 Ω 7 Ω 296 370 444 kHz 30 38 46 kHz 1.9 V 0.8 V 16 μA 80 % *Design guarantee *2 160 °C Dtsd *Design guarantee *2 40 °C ISS SS=0V EN = 0V 3.8 6 A 10 14 μA *1: Reference value (not tested before shipment) *2: Design guarantee (value guaranteed by design and not tested before shipment) No.A1762-2/5 LV58063MX Package Dimensions unit : mm (typ) 3372 SIDE VIEW BOTTOM VIEW 5.0 (3.4) (2.6) 0.43 6.0 4.4 8 2 0.35 (0.65) 0.15 1.27 Mounted on a specified board: 46.4×31.8×1.7mm3 glass epoxy both side 2.05 2.0 1.5 1.15 1.0 0.5 1.7 MAX 0 -20 0 20 40 60 80 100 Ambient temperature, Ta -- °C 0.05 (1.5) SIDE VIEW Allowable power dissipation, Pd max -- W TOP VIEW 1 Pd max -- Ta 2.5 SANYO : MFP8(200mil) Pin Assignment BOOT 1 8 SS VIN 2 7 EN SW 3 6 COMP GND 4 5 FB Top view Block Diagram and Sample Application Circuit (3.3V output) BOOT (SW + Vreg.) BOOT C2=10 F/25V + Current Sense Amp. C8=10 F/25V C1= 0.01 F Pre-Drive UVLO FB R3=10k C3= 6800pF + Error Amp. + PWM comparator Pre-Drive COMP + SS Internal Stable supply EN Vref 0.8V C5=22 F/16V C9=22 F/16V VIN C6=0.015 F H : ON or OPEN VOUT=3.3V L1=10 H GND - Current Limit Logic C4=OPEN R2=2.4k OSC 370kHz SW D1=SBM30-03 1:N R10=4.3k R1=27k VIN=12V TSD Internal Regulator Internal Regulator (5V) L:OFF L1 = CDRH105RNP-100NC (sumida) No.A1762-3/5 LV58063MX Pin Function Pin No. 1 Pin name BOOT Function Equivalent circuit Upper MOS transistor boot strap capacitance connection pin. VIN Connect the boot capacitance of about 0.01μF between SW pins. To protect the SW pin’s absolute maximum rating, to ensure CBOOT stable operation, and to eliminate noise, the boot capacitance serial resistance (about 100Ω) Rb proves effective. 2 VIN Input voltage pin. Hi side MOS Connect substantially large (20μF or more) capacitance between this pin and GND. 3 SW SW Power switch pin. Low side MOS Connect the output LC filter. Connect the above capacitance between this pin and BOOT pin. 4 GND Ground pin. 5 FB Feedback pin. Sets the output voltage by means of split resistor in the section of the output voltage VOUT - FB - GND. VOUT setting is made as calculated below: VOUT = Vref × { 1 + (R1 + R10) } R3 Vref = 0.8V VIN Internal regulation line Example: 3.3V output voltage (See Block Diagram and Sample Application Circuit) VOUT = 0.8 × { 1 + (27k + 4.3k) } 10k 10μA =3.304V 8 SS Soft start pin. Sets the soft start time by means of the built-in 10μA source voltage and external soft start capacity. The soft start capacity SS FB C6 can be set as follows: VREF 0.8V Tss C6 = 10μA × Vref Where, Tss is the soft start time and Vref is the reference voltage. Example: 1.2ms soft start time achieved 1.2ms C6 = 10μA × 0.8 V = 0.015μF 6 COMP Phase compensation pin. Connects with the phase compensation external capacitance and resistance of DC/DC converter close loop. VIN Internal regulation line COMP Clump circuit 7 EN Enable pin. Converter enabled when set to the HIGH voltage and disabled VIN when LOW voltage or OPEN state. EN Q117 2pF No.A1762-4/5 LV58063MX Considerations for the design Insertion of serial beads in the Schottky diode for removal of noise may cause generation of the negative voltage deviating from the absolute maximum rating at the SW pin, resulting in failure of normal operation. In such an event, do not insert beads as above described and, instead, remove noise by means of the BOOT resistance Rb. SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. 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SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of June, 2010. Specifications and information herein are subject to change without notice. PS No.A1762-5/5