LV5813TT-TE-L-H

Ordering number : ENA1761A LV5813TT Bi-CMOS IC Step-down Switching Regulator Overview LV5813TT is 1ch step down switching regulator. 0.25Ω FET is incorporated on the upper side to achieve high-efficiency operation for large output current. Compact-package MSOP8 (150mil) 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 90μA or less. 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 • 1.5A 1ch step-down switching regulator • Wide input dynamic range (4.75V to 18V) • High efficiency : 90% (VIN = 12V, VOUT = 5V, IOUT = 1A) • Compact package : MSOP8 (150mil) • Standby mode • Over-current protection • Thermal shutdown • Fixed frequency : 370kHz • Soft start • Reference voltage : 0.8V Applications • LCD TV • Blu-ray Disc Player/Recorder • Pre regulator • PDP TV • For χDSL power supply • Amusement 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. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer' s products or equipment. 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. 72110 SY/60210 SY PC 20100511-S00007 No.A1761-1/9 LV5813TT Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum input VIN voltage VIN max 20 V BOOT pin maximum voltage VBT max 25 V SW pin maximum voltage VSW max VIN max V BOOT pin-SW pin maximum voltage VBS-SW max 7 V EN pin maximum voltage VEN max VIN+0.3 V FB, COMP, SS pin maximum voltage Vfs max Allowable power dissipation Pd max Junction temperature Tj max Operating temperature Storage temperature *1 7 V 0.85 W 150 °C Topr -20 to +80 °C Tstg -40 to +150 °C With specified substrate *2 Note : Plan the maximum voltage while including coil and surge voltages, so that the maximum voltage is not exceeded even for an instant. *1 : VIN + 0.3 < VIN max *2 : Specified substrate : 46.4mm × 31.8mm × 1.7mm, glass epoxy substrate Recommended Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings Unit VIN pin voltage VIN 4.75 to 18 BOOT pin voltage VBT -0.3 to 23 V V SW pin voltage VSW -0.4 to VIN V BOOT pin-SW pin maximum voltage VBS-SW EN pin maximum voltage VEN FB, COMP, SS pin voltage VFSO 6.5 V VIN + 0.3 V 6 V Electrical Characteristics at Ta = 25°C, VIN = 12V, unless otherwise specified. Parameter Symbol Ratings Conditions min IC current drain at standby ICC1 EN = 0V IC current drain in operation ICC2 EN = 5V, FB = 1V Efficiency Effcy VIN = 12V, IOUT = 1A, VO = 5V, Design target *3 Reference voltage Vref VIN = 4.75V to 18V FB pin bias current Iref FB = 0.8V High-side ON resistance RonH BOOT = 5V Oscillation frequency FOSC Oscillation frequency during short-circuit protection typ -2% Unit max 90 μA 2 mA 90 % 0.8 +2% V 20 200 nA Ω 0.25 296 370 444 kHz FOSCS 85 115 145 kHz EN high-threshold voltage Venh 0.9 1.8 2.7 V EN low-threshold voltage Venl 0.7 1.35 2.0 V Maximum ON DUTY D max Current limit peak value 1 Icl1 VIN = 12V, VOUT = 1.2V, L = 10μH 3.1 5.7 A Current limit peak value 2 Icl2 VIN = 12V, VOUT = 3.3V, L = 10μH 2.8 5.4 A 2.5 85 % Current limit peak value 3 Icl3 VIN = 12V, VOUT = 5V, L = 10μH Thermal shutdown temperature Ttsd Design guarantee *4 160 °C Thermal shutdown temperature hysteresis Dtsd Design guarantee *4 40 °C Soft start current ISS SS = 0V 3 5.1 5 7 A μA *3 : Reference value (not tested before shipment) *4 : Design guarantee (value guaranteed by design and not tested before shipment) No.A1761-2/9 LV5813TT Package Dimensions unit : mm (typ) 3245B Allowable power dissipation, Pd max -- W 1.0 3.0 0.5 3.0 4.9 8 1 (0.53) 2 0.65 1.1MAX 0.125 0.85 0.8 0.6 0.48 0.4 0.2 0 --20 0 20 40 60 80 100 Ambient temperature, Ta -- °C 0.08 (0.85) 0.25 Pd max -- Ta Mounted on a specified board : 46.4×31.8×1.7mm3 glass epoxy board SANYO : MSOP8(150mil) Specified Board (Bottom side) Specified Board (Top side) Pin Assignment BOOT 1 8 SS VIN 2 7 EN SW 3 6 COMP GND 4 5 FB Top view No.A1761-3/9 LV5813TT Block Diagram and Sample Application Circuit (3.3V output) BOOT VIN VIN Internal Regulator UVLO Internal Regulator H : ON L : OFF Rb = 100Ω EN + OSC 370kHz Slope comp PWM Comparator Output logic 0.25 Pre-Drive C2 C8 = 10μF/25V × 2 C1 = 0.022μF VOUT SW + - L1 = 10μH R10 = 4.7kΩ D1 R1 = 27kΩ FB + R3 = 10kΩ Error Amp COMP C3 = 3300pF R2 = 6.8kΩ GND SS C6 = 0.015μF C5 C9 = 10μF/6.3V × 3 Pin short protection Vref 0.8V TSD L1 D1 C8 C2 C5 C9 C : NR8040T100M [TAIYO YUDEN] : SBM30-03 [SANYO] : GRM31CB31E106KA75 [MURATA] : C2012JB0J106M [TDK] : Ceramic Capacitor Pin Function Pin No. 1 Pin name BOOT Description Equivalent Circuit Upper MOS transistor boot strap capacitance VIN connection pin Connect the boot capacitance of about 0.022μF between SW pins To protect the SW pin’s absolute maximum rating, Short protection circuit to ensure stable operation, and to eliminate noise, the boot capacitance serial resistance (about 100Ω) Rb proves effective. BOOT Output MOS SW 2 VIN Input voltage pin. See BOOT Connect substantially large (10μF 2 parameters or more) capacitance between this pin and GND. 3 SW Power switch pin. See BOOT Connect the output LC filter. Connect the above capacitance between this pin and BOOT pin. 4 GND Ground pin. Continued on next page. No.A1761-4/9 LV5813TT Continued from preceding page. Pin No. 5 Pin name FB Description Equivalent Circuit Feedback pin Sets the output voltage by means of split resistor in the section of the output voltage VOUT - FB - VIN Internal regulation line GND. VOUT setting is made as calculated below : 5μA VOUT = Vref × {1+ (R1 + R10) } R3 Vref = 0.8V Example : 3.3V output voltage (See block diagram and sample application circuit) VOUT = 0.8 × {1+ FB (27k + 4.3k) } 10k VREF 0.8V SS = 3.304V 6 COMP Phase compensation pin Connects with the phase compensation external capacitance and resistance of DC/DC converter VIN Internal regulation line close loop. Short protection circuit COMP 7 EN Enable pin Converter enabled when set to the HIGH voltage and disabled when connected to GND. VIN EN 8 SS Soft start pin Set the soft start time by means of the built-in 5μA source voltage and external soft start capacity Css can be set as follows : Tss C6 = 5μA × Vref Where, Tss is soft start time and Vref is the reference voltage. Example : 2.4ms soft start time achieved 2.4ms Css = 5μA × 0.8V = 0.015μF No.A1761-5/9 LV5813TT Reference data (1) 105 ICC1 -- Ta 2.3 VIN = 12V EN = 0V IC current drain in operation, ICC2 -- mA IC current drain at standby, ICC1 -- μA 110 100 95 90 85 80 75 70 --40 --20 0 20 40 60 80 ICC2 -- Ta VIN = 12V EN = 5V FB = 1V 2.2 2.1 2.0 1.9 --40 100 --20 Ambient temperature, Ta -- °C 820 Vref -- Ta 50 VIN = 12V 45 FB pin bias current, Iref -- nA Reference voltage, Vref -- mV 815 810 805 800 795 790 785 --20 0 20 40 60 80 100 120 80 100 80 100 80 100 80 100 40 35 30 25 20 15 10 --20 FOSC -- Ta 95 VIN = 12V 410 390 370 350 330 310 290 --40 --20 0 20 40 60 0 20 40 60 Ambient temperature, Ta -- °C Maximum ON DUTY, D max -- % Oscillation frequency, FOSC -- kHz 60 VIN = 12V FB = 0.8V 0 --40 140 430 80 D max -- Ta VIN = 12V 90 85 80 --40 100 --20 Ambient temperature, Ta -- °C 0 20 40 60 Ambient temperature, Ta -- °C FOSCS -- Ta 7.0 VIN = 12V 6.5 Soft start current, ISS -- μA Oscillation frequency during short-circuit protection, FOSCS -- kHz 40 Iref -- Ta Ambient temperature, Ta -- °C 24 20 5 780 --40 450 0 Ambient temperature, Ta -- °C 18 12 6 ISS -- Ta VIN = 12V SS = 0V 6.0 5.5 5.0 4.5 4.0 3.5 0 --40 --20 0 20 40 60 Ambient temperature, Ta -- °C 80 100 3.0 --40 --20 0 20 40 60 Ambient temperature, Ta -- °C No.A1761-6/9 LV5813TT Venh -- Ta 2.6 VIN = 12V EN low-threshold voltage, Venl -- V EN high-threshold voltage, Venh -- V 2.8 2.4 2.0 1.6 1.2 0.8 --40 --20 0 20 40 60 80 Venl -- Ta VIN = 12V 2.2 1.8 1.4 1.0 0.6 --40 100 Ambient temperature, Ta -- °C 5.5 --20 0 20 40 60 80 100 Ambient temperature, Ta -- °C Icl -- Ta 4.0 VIN = 12V L = 10μH 3.5 Current Limit VIN = 12V → VOUT = 3.3V L = 10μH Output voltage, VOUT -- V Current limit peak, Icl -- A 5.0 4.5 VOUT 4.0 V = 1.2 3.3V 5.0V 3.5 3.0 2.5 2.0 * L1 = 10μH (CDRH105RNP-100N, sumida made), D1 = SBM30-03 (SANYO made) 1.5 1.0 3.0 0.5 * L1 = 10μH (CDRH105RNP-100N, sumida made), D1 = SBM30-03 (SANYO made) 2.5 --40 --20 0 20 40 60 80 0.0 0.0 100 Ambient temperature, Ta -- °C 94 Efficiency -- Load current 5.10 °C 25 Output voltage, VOUT -- V Efficiency -- % 92 90 °C 80 °C 0 -3 88 86 * L1 = 10μH (CDRH105RNP-100N, sumida made), D1 = SBM30-03 (SANYO made) 84 0.0 0.5 1.0 Load current -- A 2.0 3.0 4.0 Load current -- A VIN = 12V → VOUT = 5V = Ta 1.0 Load Regulation VIN = 12V → VOUT = 5V 5.06 5.02 Ta = 80°C 4.98 25°C -30°C 4.94 * L1 = 10μH (CDRH105RNP-100N, sumida made), D1 = SBM30-03 (SANYO made) 1.5 4.90 0.0 0.5 1.0 1.5 Load current -- A No.A1761-7/9 LV5813TT Reference data (2) (* measurement circuit is shown in “8. Sample Application circuit”, VIN = 12V ⇒ VOUT = 3.3V) •Load transient response ILoad = 0.5A ⇔ 1.0A [100μsec/div] CH3:VOUT [20mV/div] CH4:ILoad [0.5A/div] •VIN start up waveform ILoad = 0.5A •VIN stop waveform ILoad = 0.5A CH1:VIN [10V/div] CH1:VIN [10V/div] CH2:SS [2.0V/div] CH2:SS [2.0V/div] CH3:VOUT [2.0V/div] CH3:VOUT [2.0V/div] •EN start up waveform ILoad = 0.5A •EN stop waveform ILoad = 0.5A CH1:EN [5V/div] CH1:EN [5V/div] CH2:SS [2.0V/div] CH2:SS [2.0V/div] CH3:VOUT [2.0V/div] CH3:VOUT [2.0V/div] Considerations for the design • During use with VIN = 12V or less, the boot strap voltage may become deficient due to intermittent operation at no load, resulting in failure of normal operation. In this case, insert a resistance of about 500Ω between VOUT and GND and avoid the intermittent operation mode during use. • 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. No.A1761-8/9 LV5813TT 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 July, 2010. Specifications and information herein are subject to change without notice. PS No.A1761-9/9