LV5807MX-TLM-H

Ordering number : ENA1495A Bi-CMOS IC LV5807MX Step-down Switching Regulator Overview LV5807MX is a 1ch step-down switching regulator. 0.12Ω 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 40μA 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 • 3A 1ch step-down switching regulator • Wide input dynamic range (8 to 18V) • High efficiency (90% IOUT = 1A, VIN = 12V, VO = 5V) • Standby mode • Over-current protection • Thermal shutdown • Reference voltage: 0.79V • Fixed frequency: 385kHz • 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 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 EN pin maximum voltage VEN max 7 V 20 V FB, COMP, SS pin maximum voltage 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 both side. 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. 61709 SY / 61009 MS 20090602-S00001 No.A1495-1/5 LV5807MX Recommended Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings Unit VIN pin voltage VIN 8 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 VBS-SW 6.5 V EN pin maximum voltage VEN 18 V FB, COMP, SS pin voltage VFSO 6 V voltage Electrical Characteristics at Ta = 25°C, VIN = 12V, unless otherwise specified. Parameter Symbol Conditions Ratings min typ Unit max 40 μA 3 mA 90 % 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 *1 Reference voltage Vref VIN=8V to 18V (±2%) 0.79 0.8058 V FB pin bias current Iref FB=0.79V application 10 100 nA High-side ON resistance RonH BOOT=5V, IOUT=1A 0.12 Low-side ON resistance RonL Oscillation frequency fOSC Oscillation frequency during short-circuit protection fOSCS EN high-threshold voltage EN low-threshold voltage Maximum ON DUTY D max Current limit peak value Icl1 SW pin output current, VIN=12V, VOUT=5V, L=10μH Thermal shutdown temperature Ttsd Thermal shutdown temperature hysteresis Soft start current 0.7742 Ω Ω 5 310 385 460 kHz 29 38 47 kHz Venh 1.05 1.57 2.1 V Venl 0.8 1.23 1.65 V 80 % 5 A *Design guarantee *2 160 °C Dtsd *Design guarantee *2 40 °C ISS SS=0V 3.8 6 10 14 μA *1: Reference value (not tested before shipment) *2: Design guarantee (value guaranteed by design and not tested before shipment) No.A1495-2/5 LV5807MX 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×2 + Current Sense Amp. VIN=12V Rb=15 C1= 0.1 F Pre-Drive UVLO 1:N R1=27k FB R3=10k OSC 385kHz + Error Amp. + Pre-Drive PWM comparator C3= 5600pF Current Limit Comparator VOUT=3.3V L1=10 H GND COMP C4=OPEN R2=1.0k D1=SBM30-03 R10=4.7k SW BOOT Short protect circuit C5=10 F/16V×3 SW COMP SS Internal Stable supply C6=0.015 F EN H : ON Vref 0.8V Short protect circuit VIN TSD Internal Regulator Internal Regulator (5V) L or open : OFF C1,C2,C5 = Ceramic capacitor L1 = CDRH105RNP-100NC (sumida) No.A1495-3/5 LV5807MX 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 0.1μF between SW pins. To protect the SW pin’s absolute maximum rating, to ensure Short protection stable operation, and to eliminate noise, the boot capacitance BOOT serial resistance (about 15Ω) Rb proves effective. 2 VIN Input voltage pin. Hi side MOS 0.12Ω Connect substantially large (10μF 2 parallel or more) capacitance between this pin and GND. 3 SW Power switch pin. SW Connect the output LC filter. Connect the above capacitance Low side MOS 5Ω between this pin and BOOT pin. GND 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 = 0.79V VIN Internal regulation line Example: 3.3V output voltage (See Block Diagram and Sample Application Circuit) VOUT = 0.79 × { 1 + (27k + 4.7k) } 10k 10μA =3.294V 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 × 0.79 V = 0.015μF 6 COMP Phase compensation pin. Connects with the phase compensation external capacitance and resistance of DC/DC converter close loop. Internal regulation line VIN COMP Short protection 7 EN Enable pin. Converter enabled when set to the HIGH voltage and disabled VIN when LOW voltage or OPEN state. 5μA EN 1kΩ 183kΩ 2pF Q117 183kΩ No.A1495-4/5 LV5807MX 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. 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Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. 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, 2009. Specifications and information herein are subject to change without notice. PS No.A1495-5/5