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LV5068V Dataheets PDF



Part Number LV5068V
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description Low power consumption and high efficiency Step-down Switching Regulator Controller
Datasheet LV5068V DatasheetLV5068V Datasheet (PDF)

Ordering number : ENA1875 LV5068V Bi-CMOS IC Low power consumption and high efficiency Step-down Switching Regulator Controller http://onsemi.com Overview LV5068V is 1ch step-down switching regulator. The operation current is about 80μA, and low power consumption is achieved. Functions • 1ch SBD rectification controller IC • Maximum value of light load mode current is 80μA. • Built-in OCP circuit with P-by-P method • When P-by-P is generated continuously, it shifts to the HICCUP operation. •.

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Ordering number : ENA1875 LV5068V Bi-CMOS IC Low power consumption and high efficiency Step-down Switching Regulator Controller http://onsemi.com Overview LV5068V is 1ch step-down switching regulator. The operation current is about 80μA, and low power consumption is achieved. Functions • 1ch SBD rectification controller IC • Maximum value of light load mode current is 80μA. • Built-in OCP circuit with P-by-P method • When P-by-P is generated continuously, it shifts to the HICCUP operation. • If connect C-HICCUP to GND pin, then latch-off when over current. • The oscillatory frequency can be set by the external pin. The oscillatory frequency is 300 kHz to 2.2MHz • Built-in UVLO, TSD • Synchronous driving with external signal Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Input voltage Allowable pin voltage VIN max PDR,HDRV,RSNS, ILIM,EN,PG VIN-PDR REF SS,FB,COMP,RT C-HICCUP,SYNC Allowable power dissipation Pd max Specified substrate *1 Operating temperature Topr Storage temperature Tstg *1: Specified substrate 114.3mm×76.1mm×1.6mm3 glass-epoxy Ratings 45 VIN 6 6 REF Unit V V V V V 0.74 -40 to +85 -55 to +150 W ˚C ˚C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Semiconductor Components Industries, LLC, 2013 August, 2013 N1010 SY 20101102-S00002 No.A1875-1/6 LV5068V Recommended Operating Conditions at Ta = 25°C Parameter Input voltage range Symbol VIN Conditions Electrical Characteristics at Ta = 25°C, VIN = 15V Parameter Symbol Conditions Reference voltage Internal reference voltage Pch drive voltage Saw wave oscillator Oscillatory frequency ON/OFF circuit IC start-up voltage Disable voltage Soft start circuit Soft start source current Soft start sink current UVLO circuit UVLO release voltage UVLO lock voltage Error amplifier Input bias current Error amplifier gain Output sink current Output source current Over current limit circuit Reference current Over current detection comparator offset voltage RSNS pin input range HICCUP timer start-up cycle HICCUP comparator threshold voltage HICCUP timer change current PWM comparator Maximum On-duty Logic output Power good “L” sink current Power good “H” leakage current Power good threshold voltage Power good hysteresis Output Output on-resistance (High) Output on-resistance (Low) Output on-current (High) Output on-current (Low) The entire device Stand-by current Light load mode consumption current Thermal shutdown *2: Design certification Vref VPDR FOSC VCNT_ON VCNT_OFF ISS_SC ISS_SK VUVLON VUVLOF IEA_IN GEA IEA_OSK IES_OSC ILIM1 VLIM_OFS VRSNS NLCYCLES VtHIC IHIC D max IPWRGD_L IPWRGD_H VtPG VPG_H RONH RONL IONH IONL ICCS ISLEEP1 TSD IOUT=0 to -5mA RT=470kΩ EN>1.5V EN<0.3V, SS=4V FB=COMP FB=COMP FB=1.75V FB=0.75V PG=5V PG=5V EN<0.3V EN>1.5V, No switching *2 Ratings 4.5 to 40 Unit V Ratings min typ Unit max 1.241 VIN-5.5 1.260 VIN-5.0 1.279 VIN-4.5 V V 280 330 380 kHz 1.5 VIN V 0 0.3 V 1.3 2.0 2.7 μA 1.0 1.6 2.2 mA 3.3 3.7 4.1 V 2.5 2.9 3.3 V -100 -50 100 nA 100 250 400 μA/V -40 -20 -10 μA 10 20 40 μA 48.4 -5 VIN-0.175 1.2 1 55 15 1.26 2 61.6 +5 μA mV VIN 1.32 V cycle V 3 μA 95 % 4 5 6 mA 0 1 μA 1.0 1.1 1.2 V 40 50 60 mV 3 3 500 500 Ω Ω mA mA 0 1 μA 30 55 80 μA 150 170 190 ˚C No.A1875-2/6 Package Dimensions unit : mm (typ) 3178B 5.2 16 9 LV5068V 1.2 0.8 0.74 Pd max -- Ta Specified circuit board : 114.3×76.1×1.6mm3 glass epoxy board Allowable power dissipation, Pd max - W 4.4 6.4 0.5 1 (0.33) 0.65 8 0.22 0.15 0.1 (1.3) 1.5max SANYO : SSOP16(225mil) 0.4 0.38 0 -40 -20 0 20 40 60 80 100 120 Ambient temperature, Ta - C Block Diagram VIN 2.EN Hi:ON Lo:OFF 11.C-HICCUP C8 14.COMP FB 15.FB R6 C6 12.SS C7 1.PG 13.NC Wake-up Band-gap Bias 1.26V + - uvlo.comp TSD -HIC CUP.comp + enable REF Pch Drive + - pwm.comp 15pluse + - counter - ++ PbyP.comp err.amp + - VIN PG.comp enable + - 1.1V + - SQ RQ slope clk OSC Level-shift PDR R3 16.REF C5 7.PDR C3 4.VIN VIN R1 R2 C1 C10 5.RSNS 3.ILIM 6.HDRV Q1 L D1 C9 R4 FB 9. SYNC 10.RT 8.GND R8 R7 C2 R5 No.A1875-3/6 Pin Assignment LV5068V PG 1 EN 2 ILIM 3 VIN 4 RSNS 5 HDRV 6 PDR 7 GND 8 TOP VIEW LV5068V 16 REF 15 FB 14 COMP 13 N.C. 12 SS 11 C-HICCUP 10 RT 9 SYNC Pin Descriptions Pin Pin name No. 1 PG Descriptions Power good pin. Connect to open drain of MOS-FET in ICs inside. Setting output voltage to "L", when FB voltage is 1.05V or less 2 EN ON/OFF pin 3 ILIM 4 VIN 5 RSNS For current detection. Sink current is about 55μA. The current limiter comparator works when an external resistor is connected between this pin and VIN, and if the voltage of this resistor is less than the voltage of RSNS then Pch MOS is turned off. This operation is reset eac.


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