LV58063MCZ-AH

Ordering number : ENA2120B LV58063MC Bi-CMOS IC Step-down Switching Regulator http://onsemi.com Overview LV58063MC 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 SOP8L (200mil) employed. Current mode control gives superior load current response with easy phase compensation. EN pin, allowing the standby mode with the current drain of 70μA. Pulse-by-pulse over-current protection and overheat protection available for protection of load devices. Externally adjustable soft start time. Function • 3A 1ch step-down switching regulator • Thermal shutdown • Wide input range (8 to 28V) • Reference voltage: 0.8V • High efficiency (90% IOUT=1A, VIN=12V, VOUT=5V) • Fixed frequency: 370kHz • Standby mode • Soft start • Over-current protection • Compact package: SOP8L (200mil) with exposed pad • Overshoot control after over-current protection event SOP8L (200mil) Application • LCD/PDP-TV • STB • White Goods • Office equipment • General consumer electronics ORDERING INFORMATION See detailed ordering and shipping information on page 6 of this data sheet. Semiconductor Components Industries, LLC, 2014 July, 2014 71814NK 20140707-S00003/40414NK/91212NKPC No.A2120-1/6 LV58063MC Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum input VIN voltage Symbol Conditions Ratings Unit VIN max BOOT pin maximum voltage VBT max SW pin maximum voltage VSW max BOOT pin-SW pin maximum voltage FB, EN, COMP, SS pin maximum 32 V 37 V VIN max V VBS-SW max 7 V Vfs max 7 V 2.05 W voltage Allowable power dissipation Pd max Mount on a specified board * Junction temperature Tj max 150 °C Operating temperature Topr -20 to +80 °C Storage temperature Tstg -40 to +150 °C * 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. Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 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 SW pin voltage VSW -0.4 to VIN V BOOT pin-SW pin voltage VBS-SW FB, EN, COMP, SS pin voltage VFSO V 6.5 V 6 V Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. Electrical Characteristics at Ta = 25°C VIN = 12V, unless otherwise specified. Ratings Parameter Symbol Conditions IC current drain in standby ICC1 EN=0V IC current drain in operation ICC2 EN=open, FB=1V Efficiency Effcy VIN=12V, IOUT=1A, VOUT=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 FOSCS min typ -2% Unit max 70 μA 5 mA 90 % 0.8 +2% V 10 100 nA Ω 0.13 Ω 7 296 370 444 kHz 30 38 46 kHz 1.9 V short-circuit protection EN high-threshold voltage Venh EN low-threshold voltage Venl EN pull-up corrent Ien Maximum ON DUTY D max Current limit peak value Icl 0.8 EN=0V VIN=12V, VOUT=5V, L=10μH V 16 μA 80 % 3.8 A Thermal shutdown temperature Ttsd *Design guarantee *2 160 °C Thermal shutdown temperature Dtsd *Design guarantee *2 40 °C ISS SS=0V hysteresis Soft start current 6 10 14 μA *1: Design target (not tested before shipment) *2: Design guarantee (value guaranteed by design and not tested before shipment) Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. No.A2120-2/6 LV58063MC Package Dimensions unit : mm SOIC8 N EP / SOP8L (200 mil) CASE 751DM ISSUE O No.A2120-3/6 LV58063MC Pd max -- Ta Allowable power dissipation, Pd max -- W 2.5 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 0 -20 0 20 40 60 80 100 Ambient temperature, Ta -- °C 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=10μF/25V VIN=12V + Current Sense Amp. Rb=0Ω C8=10μF/25V C1= 0.01μF Pre-Drive UVLO R1=27kΩ FB R3=10kΩ OSC 370kHz + Error Amp. + PWM comparator Pre-Drive SW D1=MBRA340 1:N R10=4.3kΩ VOUT=3.3V L1=10μH C5=22μF/16V GND COMP C9=22μF/16V R2=2.4kΩ C3= 6800pF + - Current Limit Logic C4=OPEN Internal Stable SS supply EN Vref 0.8V VIN C6=0.015μF H:ON or OPEN TSD Internal Regulator Internal Regulator (5V) L:OFF • C1,C8,C5,C9 = Ceramic capacitor • L1=CDRH105RNP-100NC (sumida) No.A2120-4/6 LV58063MC Pin Function Pin No. 1 Pin name BOOT Description Equivalent Circuit Internal high side mos fet boot strap capacitor Pin. Connect around 0.01μF capacitor or greater between SW and BOOT. To operate within absolute maximum rating of SW, to keep stable operation, and to reduce switching noise, please use a series resistor, Rb (value is around 100Ω) is recommended to use. 2 VIN Input Voltage Pin. See BOOT Large Filter Capacitor ( equal or larger than 20μF) should be connected between VIN and GND to eliminate noise on the input and to operate properly. When using electrolytic capacitors, it is recommended to add a ceramic capacitor of about 0.1uF between VIN-GND for stability. 3 SW Power Switching Pin. See BOOT Connect the output LC filter. Connect the above-mentioned capacitor between this pin and BOOT pin. 4 GND Ground pin. 5 FB Feedback pin. Connect a voltage divider resistor across FB to set the regulated output voltage. The output Internal regulated VIN voltage is given by next equation. VOUT = Vref × { 1 + (R1 + R10) } R3 10μA Vref = 0.8V Example: 3.3V output voltage (See Block Diagram and Sample Application FB SS Circuit) (27k + 4.3k) VOUT = 0.8 × { 1 + } 10k VREF 0.8V =3.304V 6 COMP Phase compensation pin. Connect an external capacitor and a resistor for the DC DC converter close loop-phase VIN Internal regulation line compensation. COMP Clump circuit Continued on next page. No.A2120-5/6 LV58063MC Continued from preceding page. Pin No. 7 Pin name EN Description Equivalent Circuit Enable Pin. VIN If applying logically high voltage, or left open, the converter operates. If connected to GND, the converter’s operation EN stops. Q117 It is not applied to the EN before VIN is applied. 2pF 8 SS See FB Soft start Pin Internal source current (10μA) and external capacitor will make soft start time. Soft start capacitor, C6 is given by next equation, Tss C6 = 10μA × Vref Where, Tss : soft start time, Vref : reference voltage Example : soft start time 1.2ms 1.2ms C6 = 10μA × 0.8 V = 0.015μF Considerations for the design • Insertion of serial beads in the Schottky diode for removal of noise may cause generation of the negative voltage on SW pin deviating from the absolute maximum rating at the SW pin, resulting in failure of normal operation. Please, do not insert beads as above described. Instead, remove noise by Rb resistor. • Exposed pad on the bottom side of the IC should be soldered. We cannot recommend other usages of the exposed pad. ORDERING INFORMATION Device LV58063MC-AH Package SOP8L (200mil) (Pb-Free / Halogen Free) LV58063MCZ-AH SOP8L (200mil) (Pb-Free / Halogen Free) Shipping (Qty / Packing) 2000 / Tape & Reel 2000 / Tape & Reel ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries. SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf . SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PS No.A2120-6/6