LA5759
LA5759 is Separately-excited Step-down Switching Regulator manufactured by onsemi.
Overview
The LA5759 is a separately-excited step-down switching regulator (variable type).
Features
- Output smoothing condenser can use a Low ESR condenser for the reliability improvement
- High efficiency
- Four external parts
- Time-base generator (80k Hz) incorporated
- Current limiter incorporated
- Thermal shutdown circuit incorporated
- Soft start circuit incorporated
Specifications
Maximum Ratings at Ta = 25°C
Parameter Input voltage SW pin application reverse Allowable power dissipation
Operating temperature Storage temperature
Symbol VIN max VSW Pd max1 Pd max2 Topr Tstg
Conditions
Infinite heat sink. No heat sink.
Ratings 34 -1 7.5
1.75 -30 to +125 -40 to +150
Unit V V W W °C °C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Remended Operating Conditions is not implied. Extended exposure to stresses above the Remended Operating Conditions may affect device reliability.
Remended Operating Conditions at Ta = 25°C
Parameter Input voltage range
Symbol VIN
Conditions
Ratings
4.5 to 32
Unit V
Semiconductor ponents Industries, LLC, 2013 August, 2013
51210 SY 20100308-S00001 No.A1683-1/4
Electrical Characteristics at Ta = 25°C, VO = 3.3V
Parameter
Symbol
Conditions
Reference voltage Efficiency
VOS η
Switching frequency f
Line regulation Load regulation Output voltage temperature coefficient Ripple attenuation factor
ΔVOLINE ΔVOLOAD ΔVO/ΔTa RREJ
Current limiter operating...
