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LV5725JA Dataheets PDF



Part Number LV5725JA
Manufacturers On Semiconductor
Logo On Semiconductor
Description Step Down Switching Regulator
Datasheet LV5725JA DatasheetLV5725JA Datasheet (PDF)

Ordering number : ENA2054A LV5725JA Bi-CMOS LSI Step-down Switching Regulator Overview The LV5725JA is a step-down voltage switching regulator. http://onsemi.com Functions • Wide input dynamic range: 4.5V to 50V. • Current mode type. • Built-in pulse-by-pulse OCP circuit: detection is on resistance of an external MOS. • Over current protection: HICCUP mode. • Thermal shutdown. • Load-independent soft start circuit • ON/OFF pin • Synchronous operation by external signal. • Power good pin • Ex.

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Ordering number : ENA2054A LV5725JA Bi-CMOS LSI Step-down Switching Regulator Overview The LV5725JA is a step-down voltage switching regulator. http://onsemi.com Functions • Wide input dynamic range: 4.5V to 50V. • Current mode type. • Built-in pulse-by-pulse OCP circuit: detection is on resistance of an external MOS. • Over current protection: HICCUP mode. • Thermal shutdown. • Load-independent soft start circuit • ON/OFF pin • Synchronous operation by external signal. • Power good pin • External voltage is usable when output voltage is high. Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Sy Supply voltage VIN, SW, OUT, PGOOD HDRV, CBOOT Allowable pin voltage LDRV Between CBOOT to SW Between CBOOT to HDRV EN, ILIM Between VIN to ILIM VDD SS, FB, COMP,RT, SYNC Allowable Power dissipation Operating temperature Storage temperature Parameter Maximum junction temperature Pd max Topr Tstg Symbol Tj max Conditions Ratings 150 Mounted on a specified board. * VIN+0.3 1.0 6.0 VDD+0.3 1.45 -40 to +85 -55 to +150 V V V V W °C °C Unit °C mbol VIN max Conditions Ratings 55 55 61 6.0 6.0 Unit V V V V V * Specified board : 58.0mm × 78.0mm × 1.6mm, fiberglass epoxy printed board. Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time. Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current, high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details. 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 53012 SY 20120523-S00001/50912 SY 20120327-S00002 No.A2054-1/8 http://www.Datasheet4U.com LV5725JA Recommended Operating Range at Ta = 25°C Parameter Supply voltage range Error amplifier input voltage Oscillatory frequency Symbol VIN VFB FOSC Conditions Ratings 4.5 to 50 0 to 1.6 50 to 500 Unit V V kHz Electrical Characteristics at Ta = 25°C, VIN = 12V Parameter Sy Reference voltage block Internal reference voltage 5V power supply Triangular waveform oscillator block Oscillation frequency Frequency variation Fold back detection voltage Fold back oscillation frequency ON/OFF circuit block IC start-up voltage Hysteresis of startup voltage Soft start circuit block Soft start source current Soft start sink current Soft start end voltage UVLO circuit block UVLO voltage Hysteresis of UVLO Error amplifier Input bias current Error amplifier gain Range of common-mode input voltage Output sink current Output source current Current detection amplifier gain Over current limiter circuit block Reference current Over current detection comparator offset voltage Range of over current detection comparator common mode input PWM comparator Input threshold voltage Vt max Vt0 Maximum ON duty DMAX Duty cycle = DMAX, SW = VIN 1.15 Duty cycle = 0%, SW = VIN 0.5 92 1.25 0.6 1.35 0.7 V V % Continued on next page. VLIM_CM VIN-0.45 VIN V ILIM VLIM_OFS -10% -5 20 +10% +5 μA mV IEA IN GEA VEA R IEA OSK IEA OSC GISNS VIN = 4.5 to 50V FB = 1.0V FB = 0V 1000 0 -100 100 2.4 1400 100 1800 1.6 nA μA/V V μA μA VUVLO VUVLO H 3.7 4.0 0.3 4.3 V V ISS SC ISS SK VSS END EN > 3.0V EN < 1V, VDD = 5V 0.7 4 5 2 0.9 1.1 6 μA mA V VEN on VEN hys 0.3 2.5 0.6 3.0 V V FOSC RT= FOSC DV VOSC FB FOSC FB RT= 56kΩ 317 VIN = 4.5 to 50V After power is supplied to SS, voltage is detected FB. 56kΩ, VFB = 0V 100 130 160 kHz 365 1 0.5 412 kHz % V Vref VDD Including offset of E/A 0.698 IOUT = 0 to 5mA 4.7 0.708 5.2 0.718 5.7 V V mbol Conditions Ratings min ty p max Unit No.A2054-2/8 LV5725JA Continued from preceding page. Parameter Sy Power good Power good “L” sink current Power good “H” sink current Power good voltage Hysteresis of power good Output block High side output ON resistance (upper) High side output ON resistance (lower) Low side output ON resistance (upper) Low side output ON resistance (lower) High side output ON current (upper) High side output ON current (lower) Low side output ON current (upper) Low side output ON current (lower) Entire device Standby current Average current consumption ICCS EN ICCA < 1V EN > 3.0V 2.5 1 μA mA RONH_HIGH RONL_HIGH RONH_LOW RONL_LOW IONH_HIGH IONL_HIGH IONH_LOW IONL_LOW CBOOT – HDRV = -0.1V HDRV – SW = +0.1V VDD – LDRV = -0.1V LDRV – GND = +0.1V CBOOT – HDRV = -4.5V HDRV – SW = +4.5V VDD – LDRV = -5.2V LDRV – GND = +5.2V 160 330 190 250 12 3.3 7.9 3.8 Ω Ω Ω Ω mA mA mA mA IPGL IPGH PGthresh PGhys PGOOD = 5V PGOOD = 5V When FB voltage rises 0.612 12 5 1 mA μA V mV mbol Conditions Ratings min ty p max Unit Package Dimensions unit : mm (typ) 3178B 5.2 16 9 2.0 Pd max -- Ta Spesified bord:58.0×78.0×1.6mm3 glass epoxy.


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