LA5744
Overview
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Separately-Excited Step-Down
Switching Regulator (Variable Type)
The LA5744 is a separately-excited step-down switching regulator (variable type).
Functions
- High efficiency.
- Time-base generator (300k Hz) incorporated.
- Current limiter incorporated.
- Thermal shutdown circuit incorporated.
- Soft start circuit incorporated.
Specifications
Maximum Ratings at Ta = 25°C
Parameter Input voltage Maximum output current SW pin application reverse voltage Allowable power dissipation Symbol VIN IO max VSW Pd max1 Pd max2 Operating temperature Storage temperature Junction temperature Topr Tstg Tj max No heat sink Infinite heat sink Conditions Ratings 30 3 -1 1.75 7.5 -30 to +125 -40 to +150 150 Unit V A V W W °C °C °C
- Specified circuit board : 76.1×114.3×1.6mm3 : Copper foil ratio 60% FR4
Remended Operating Conditions at Ta = 25°C
Parameter Input voltage range Symbol VIN Conditions Ratings 4.5 to 28 Unit V
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