LA5752MP - Sanyo Semicon Device

LA5752MP Separately-Excited Step-Down Switching Regulator

of Functional Settings 1.Start delay function The SS pin has the internally-connected 22µA (typ) constant-current supply. When the voltage of SS pin exceeds the threshold voltage, the regulator starts operation. As the threshold is 0.62V(typ), the start delay time can be calculated as follows: ex. For setting at 1µF Td = C × V 1µ × 0.62 = = 28.2 msec 22µ i 1.

Features

• High efficiency
• Four external parts
• Time-base generator (60kHz) incorporated
• Current limiter incorporated
• Thermal shutdown circuit incorporated
• Soft start circuit incorporated Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Input voltage Output current SW pin application reverse voltage Allowable power dissipation Junction temperature Operating temperature Storage temperature Symbol VIN max IO max Vsw Pd max Tj max Topr Tstg Mounted on a specified board.
* Conditions Ratings 30 3 -1 3.9 150 -30 to +125 -40 to +150 Unit V A V W °C °C °C
* Mounted on a specified boar.