LV5072M

Ordering number : ENA1670 Bi-CMOS IC LV5072M Overview DC/DC Converter IC The SANYO LV5072M is a DC/DC converter IC that has a step-down DC/DC converter output and an externally-controllable GPO output for discharging the output capacitor. Features • One channel of synchronous rectifying PWM controlled step-down DC/DC converter output (0.8V to 3.3V/2A) • One channel of externally controllable GPO output for discharging the output capacitor • Built-in thermal shutdown circuit • Built-in hiccup recovery Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Input pin voltage Output pin voltage Allowable Power dissipation Operating temperature Storage temperature Symbol VIN VINC VOUT Pd max Topr Tstg VIN, PVIN GPI, ENDCO LX, GPO Ta = 25°C Mounted on a circuit board.* Conditions Ratings -0.3 to 6.0 -0.3 to 6.0 -0.3 to 6.0 1.5 -20 to +85 -40 to +125 Unit V V V W °C °C * Specified circuit board : 50.0mm × 50.0mm × 1.6mm, 2-layer glass epoxy printed circuit board, Wiring density on the backside = 54% 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. 31010 SY 20100218-S00003 No.A1670-1/9 LV5072M Operating Conditions at Ta = 25°C Parameter Supply voltage Symbol VIN Conditions VIN = PVIN, 0.8V ≤ VOUT ≤ 1.3V VIN = PVIN, 1.3V ≤ VOUT ≤ 1.9V VIN = PVIN, 1.9V ≤ VOUT ≤ 3.3V Input pin voltage VINC GPI, ENDCO Ratings 2.95 to 5.5 3.2 to 5.5 4.5 to 5.5 -0.3 to VIN Unit V V V V Electrical Characteristics, Current drain, unless otherwise specified at Ta = 25°C, VIN = 5.0V, no load Parameter Standby current drain Current drain DCDC ON Symbol ICCSB ICCFL Conditions min GPI = ENDCO = Low GPI = ENDCO = High, VOUT = 1.8V Ratings typ 0.5 12 max 10 16 μA mA Unit DC/DC, unless otherwise specified at Ta = 25°C, VIN = 5.0V, VOUT = 1.8V, no load Parameter FB voltage Current limit peak value Efficiency 1 Efficiency 2 Load regulation Frequency LX ON resistance Symbol VFB CLIMIT EF1 EF2 VL Fosc RLXP RLXN IOH = -300mA, Pch IOL = 300mA, Nch IO = 0.5A, VOUT = 3.3V IO = 0.5A, VOUT = 1.8V IO = 1mA to 2A 1.7 IO = 10mA Conditions min 0.49 2.3 90 82 25 2.2 0.15 0.15 70 2.7 Ratings typ 0.50 max 0.51 V A % % mV MHz Ω Ω Unit GPI, ENDCO Input, GPO Output, unless otherwise specified at Ta = 25°C, VIN = 5.0V Parameter GPO Output current GPO output voltage Low-level GPO output leakage current GPI/ENDCO input voltage High-level GPI/ENDCO input voltage Low-level Symbol Igpo VOL ILK VINH VINL Conditions min GPI = 0V, GPO = 1.5V GPI = 0V, IOL = 5mA GPO Input High-level GPI, ENDCO Input Low-level GPI, ENDCO 1.5 0 0.3 7.5 Ratings typ 15 0.5 0 max 37.5 1 10 mA V μA V V Unit Package Dimensions unit : mm (typ) 3384 Pd max -- Ta TOP VIEW 5.0 (3.4) 12 SIDE VIEW BOTTOM VIEW 2.0 Allowable power dissipation, Pd max -- W Specified circuit board : 50.0 × 50.0 × 1.6mm3 2-layer glass epoxy board, Wiring density on the backside = 54% 1.50 1.5 (2.6) 6.4 4.4 1.0 1 2 0.3 0.8 0.15 0.63 0.60 0.5 (0.5) 1.7 MAX SIDE VIEW (1.5) 0 --20 0 20 40 60 80 100 Ambient temperature, Ta -- °C 0.05 SANYO : MFP12S(225mil) No.A1670-2/9 LV5072M Specified board for Pd max measurement Pin Assignment ENDCO PGND2 GND 12 11 10 9 8 LV5072M 1 PGND1 2 LX 3 NC 4 PVIN 5 FB Top view GPO BGR GPI VIN 7 6 No.A1670-3/9 LV5072M Block Diagram (1.25V) BGR 7 Vref 6 GPO (0.5V) 9 Soft start Thermal protection 10 VIN 3 OSC PWM control Output control NC + 4 PVIN 5.0V GPI Cf = 1000pF GND 8 5 FB ENDCO 11 Soft start Current protection VOUT 2 LX 0.8V to 3.3V (2A) 12 PGND2 1 PGND1 Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 Pin name PGND1 LX NC PVIN FB GPO BGR GND GPI VIN ENDCO PGND2 DC/DC power-dedicated ground Switching regulator PWM output pin NC DC/DC power dedicated power pin DC/DC feedback voltage input pin GPO output for discharging the output capacitor Internal reference voltage output pin Signal ground GPO output control pin. L : Output capacitor discharge Signal system power supply DC/DC output control pin. Low : OFF, High : ON DC/DC power dedicated ground Description No.A1670-4/9 LV5072M Pin Functions Pin No. 2 Pin Name LX Pin function Switching regulator PWM signal output Equivalent Circuit PVIN LX PGND 5 FB Switching regulator Feedback voltage input VIN FB 1kΩ GND 6 GPO GPO output for discharging the output capacitor GPO 100Ω GND 7 BGR Reference voltage output VIN BGR 1.5kΩ GND Continued on next page. No.A1670-5/9 LV5072M Continued from preceding page. Pin No. 9 Pin Name GPI Pin function GP0 output control pin (Low : Discharging the output capacitor) Equivalent Circuit VIN GPI 10kΩ 500kΩ GND 11 ENDCO DC/DC on/off control (High : Converter ON) VIN ENDCO 10kΩ GND 500kΩ No.A1670-6/9 LV5072M Evaluation Board Efficiency -- Load current 100 100 Efficiency -- Load current Efficiency VOUT = 2.5V Efficiency VOUT = 3.3V 5V 90 90 V IN = Efficiency -- % 80 Efficiency -- % V IN 80 = 5V 70 70 60 60 50 10 2 3 5 7 100 2 3 5 7 1000 2 3 10000 57 50 10 2 3 5 7 100 2 3 5 7 1000 2 3 5 710000 100 Efficiency -- Load current Efficiency VOUT = 1.8V Load current, IOUT -- mA 100 Efficiency -- Load current Efficiency VOUT = 1.8V Load current, IOUT -- mA 90 90 Efficiency -- % Efficiency -- % 5V 70 70 60 60 50 10 2 3 5 7 100 2 3 5 7 1000 2 3 5 710000 50 10 2 3 5 7 100 5V 2 3 80 VI N = 3 3. V 80 V IN =3 .3V 5 7 1000 2 3 5 710000 100 Efficiency -- Load current Efficiency VOUT = 1.2V Load current, IOUT -- mA 100 Efficiency -- Load current Efficiency VOUT = 1V Load current, IOUT -- mA 90 90 Efficiency -- % 80 V IN =3 Efficiency -- % .3V 5V 80 V IN 70 =3 .3V 5V 70 60 60 50 10 2 3 5 7 100 2 3 5 7 1000 2 3 5 710000 50 10 2 3 5 7 100 2 3 5 7 1000 2 3 5 710000 1.850 Load Regulation (VIN = 5V Load current, IOUT -- mA VOUT = 1.8V) 2 Current Limit (VOUT = 1.8V) Load current, IOUT -- mA Output voltage, VOUT -- V 1.825 Output voltage, VOUT -- V 1.5 1.800 1 1.775 0.5 1.750 0 500 1000 1500 2000 0 0 500 1000 1500 2000 2500 3000 Load current, IOUT -- mA Load current, IOUT -- mA No.A1670-7/9 LV5072M 3.0 ENDCO Turn ON 0.510 Ta -- FB (VOUT = 1.8V, IO = 10mA) 2.5 Output voltage, VOUT -- V 2.0 FB voltage, VFB -- V 0 0.5 1.0 1.5 2.0 0.505 1.5 0.500 1.0 0.495 0.5 0 0.490 --20 0 20 40 60 80 85 VEN -- V 1.850 Ambient temperature, Ta -- C Ta -- VOUT (VOUT = 1.8V, IO = 10mA) Output voltage, VOUT -- V 1.825 1.800 1.775 1.750 --20 0 20 40 60 80 85 Ambient temperature, Ta -- C 1.9 Load Transient Response 1 (IO = 10mA 1A) 1.9 Load Transient Response 2 (IO = 10mA 2A) 1.85 1.85 Output voltage, VOUT -- V Output voltage, VOUT -- V 1.8 1.8 1.75 1.75 1.7 2 1.7 2 1 0 0 100 200 300 400 --1 500 IO -- A 1 0 0 100 200 300 400 --1 500 No.A1670-8/9 IO -- A LV5072M ENDCO ON Waveforms. (VOUT = 1.8V, Co = 22μF, Cvin = 1μF, Cpvin = 10μF × 3, CBGR = 0.22μF) Startup waveform No load 1 5ms 5.0V 1ch ENDCO 5V/div 500μS/div 1 5ms 5.0V 1ch ENDCO 5V/div Startup waveform IO = 2A 500μS/div 2 5ms 1.00V 2ch BGR 1V/div 2 5ms 1.00V 2ch BGR 1V/div 3 5ms 1.00V 3ch VOUT 1V/div 3 5ms 1.00V 3ch VOUT 1V/div 4 5ms 100mA 4ch IIN 100mA/div 4 5ms 0.50A 4ch IIN 500mA/div 10ms/s 10ms/s Stop waveform No load 1 2ms 5.0V 2mS/div 1 1ch ENDCO 5V/div 5ms 5.0V Stop waveform IO = 2A 500μS/div 1ch ENDCO 5V/div 2 2ms 1.00V 2ch BGR 1V/div 2 5ms 1.00V 2ch BGR 1V/div 3 2ms 1.00V 3ch VOUT 1V/div 3 5ms 1.00V 3ch VOUT 1V/div 4 2ms 100mA 4ch IIN 100mA/div 4 5ms 0.50A 4ch IIN 500mA/div 2.5ms/s 10ms/s 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 March, 2010. Specifications and information herein are subject to change without notice. PS No.A1670-9/9