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LV5050V Dataheets PDF



Part Number LV5050V
Manufacturers Sanyo Semicon Device
Logo Sanyo Semicon Device
Description DC-DC Converter Controller
Datasheet LV5050V DatasheetLV5050V Datasheet (PDF)

www.DataSheet.co.kr Ordering number : ENA0535 LV5050V Overview CMOS IC DC / DC Converter Controller The LV5050V is a high efficiency DC/DC converter controller IC adopting a synchronous rectifying system. Incorporating numerous functions on a single chip with easy external setting, it can be used for a wide variety of applications. This device is optimal for use in internal power supply systems which are used in electronic devices, LCD-TVs, DVD recorders, etc. Functions • Step-down DC/DC c.

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www.DataSheet.co.kr Ordering number : ENA0535 LV5050V Overview CMOS IC DC / DC Converter Controller The LV5050V is a high efficiency DC/DC converter controller IC adopting a synchronous rectifying system. Incorporating numerous functions on a single chip with easy external setting, it can be used for a wide variety of applications. This device is optimal for use in internal power supply systems which are used in electronic devices, LCD-TVs, DVD recorders, etc. Functions • Step-down DC/DC converter controller with 1-channel • Input UVLO circuit • Built-in over current detection function • Built-in soft-start/soft-stop function • Built-in start-up delay circuit • Built-in output voltage monitor function (Under voltage protection with power good and timer latch) • Synchronized operation is possible between different devices. Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Supply voltage Output peak current Allowable power dissipation Operating temperature Storage temperature 3 Symbol VIN IOUT Pd max Topr Tstg Ta=25°C *1 Conditions Ratings 18 ±1.0 800 -20 to 85 -55 to +150 Unit V A mW °C °C *1: Board size: 114.3×76.1×1.6mm , glass epoxy board. Continued on next page. Any and all SANYO Semiconductor products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor 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 products described or contained herein. D2706 MS IM 20060602-S00005 No.A0535-1/7 Datasheet pdf - http://www.DataSheet4U.net/ www.DataSheet.co.kr LV5050V Continued from preceding page. Allowable terminal voltage *2 1 2 3 4 5 HDRV CBOOT Between HDRV, CBOOT and SW VIN, ILIM, RSNS, SW, PGOOD VLIN5 VDD, LDRV COMP, FB SS, UV_DELAY TD, CT CLKO *2: The Allowable Terminal Voltage, the SGND+PGND pin becomes a standard except for No.2 of the allowable terminal voltage about No.2 of the allowable terminal voltage, the SW pin becomes a standard. 18 6.5 VLIN5+0.3 V V V 6.5 V 28 V Recommended Operating Condition at Ta = 25°C Parameter Supply voltage Supply voltage Symbol VIN VIN Conditions VIN and VLIN5 pins opens VIN and VLIN5 pins shorted Ratings 7.5 to 16 4.5 to 6.0 Unit V V Electrical Characteristics at Ta = 25°C, VIN=12V (Unless especially specified) Parameter System Reference voltage for comparing Supply current 1 Supply current 2 5V supply voltage Over-current sense comparator offset Over-current sense reference current source Soft start source current Soft start sink current Soft start clamp voltage UV_DELAY source current UV_DELAY sink current UV_DELAY threshold voltage UV_DELAY operating voltage VUVP detection hysteresis Output discharge transistor ON resistance Output part CBOOT leakage current HDRV LDRV source current HDRV LDRV sink current HDRV lower ON resistance LDRV lower ON resistance Synchronous ON prevention dead time 1 Synchronous ON prevention dead time 2 ICBOOT ISCDRV ISKDRV RHDRV RLDRV Tdead1 Tdead2 LDRV OFF→HDRV ON HDRV OFF→LDRV ON VCBOOT=VSW+6.5V 1.0 1.0 1.5 1.5 70 120 10 µA A A Ω Ω ns ns ISSSC ISSSK VSST0 ISCUVD ISKUVD VUVD VUVP ∆VUVP VSWON 5 100%=VREF UV_DELAY=2V UV_DELAY=2V TD=5V TD=0V -1.8 0.5 1.2 -4.3 0.5 1.5 87 -3.5 2.0 1.6 -8.6 2 2.4 92 1.5 10 20 3.5 97 2.0 -17.2 -7.0 µA mA V µA mA V % % Ω VREF ICC1 ICC2 VLIN5 VCLOS ICL VIN=10 to 14V TD=5V (Except for the Ciss charge) TD=0V IVIN5=0 to 10mA 0.3 4.75 -5 7.47 8.30 0.818 0.826 2 0.6 5.00 0.834 4 1.2 5.25 +5 9.13 V mA mA V mV µA Symbol Conditions min Ratings typ max Unit Continued on next page. No.A0535-2/7 Datasheet pdf - http://www.DataSheet4U.net/ www.DataSheet.co.kr LV5050V Continued from preceding page. Parameter Oscillator Oscillation freaquency Oscillation frequency range Maximum ON duty Minimum ON time Upper-side voltage saw- tooth wave Lower-side voltage saw-tooth wave Error Amplifier Error amplifier input current COMP pin source current COMP pin sink current Error amplifier gm Logic output Power Good low level source current Power Good high level leakage current TP pin threshold voltage TP pin high impedance voltage TD pin charge source current TD pin discharge sink current CLKO high level voltage CLKO low level voltage Protection function VIN UVLO Release voltage UVLO Hysteresis VUVLO ∆VUVLO 3.5 4.1 0.4 4.3 mA µA IpwrgdL IpwrgdH VONTD VTDH ITDSC ITDSK VCLKOH VCLKOL ICLK10=1mA ICLK10=1mA VPGOOD=0.4V VPGOOD=12V When the voltage of the TD pin.


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