LV56351JA

Ordering number : ENA2001 Bi-CMOS IC LV56351JA Overview 1ch DC/DC boost converter LV56351JA integrates 1ch DC/DC boost converter and 1ch LDO. It is suitable as the power supply for BS/CS antennas of LCD/PDP TV and BD recorders that require automatic recovery without IC destruction and malfunction when the output is short-circuited. Functions DC/DC boost converter • Soft-start time: 2.8ms • Frequency 425kHz operation • Pulse by pulse over current limiter • Short circuit protector (SCP) LDO • Over current limiter (Fold back) All • Under voltage lockout • Thermal shutdown protector • Power good Specifications Parameter Maximum Ratings at Ta = 25°C Symbol VCC max VLDOIN VSW Pd max Topr Tjopr Tstg *1 Conditions Ratings -0.3 to 25 -0.3 to 30 -0.3 to 30 1.1 -30 to 85 -30 to 125 -40 to 150 25 30 6 Unit V V V W °C °C °C V V V VCC maximum supply voltage LDOIN maximum input voltage SW maximum voltage Allowable power dissipation Operating temperature Operating junction temperature Storage temperature Allowable pin voltage VCC, EN SW, LDOIN, LDOOUT IN1, IN2, FB, SCP, PGOOD, DDCTL *1: When mounted on the specified printed circuit board (32mm × 38mm × 1.6mm), glass epoxy, double side 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. 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. 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 new introduction or other application different from current conditions on the usage of automotive device, communication device, office equipment, industrial equipment etc. , please consult with us about usage condition (temperature, operation time etc.) 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. 20112 SY 20111129-S00001 No.A2001-1/8 LV56351JA Recommended Operating Conditions at Ta = 25°C Parameter VCC supply voltage LDOIN input voltage SW voltage EN voltage Symbol VCC VLDOIN VSW VEN Conditions Ratings 8 to 23 8 to 28 -0.3 to 28 0 to 23 Unit V V V V Electrical Characteristics at Ta = 25°C, VCC = 12V, VEN=2V, LDOIN=16V, LDOOUT=15V Parameter All Supply current ICC IOFF Reference voltage Enable voltage Disable voltage EN input current PGOOD threshold PGOOD sink current PGOOD leak current UVLO on voltage Thermal shutdown temperature TSD hysteresis DC/DC boost converter FB output voltage ”Low” FB output voltage “High” Soft-start time Oscillator frequency Max on duty SW on resistance SW peak current SCP source current SCP threshold DDCTL on voltage DDCTL off voltage DDCTL input current LDO Maximum output current Line regulation Load regulation Dropout voltage Short current IOMAX RLN RLD VDROP ISHORT 16V