LTC3525D-3.3 elecTrical characTerisTicsThe l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are atTA = 25°C. VIN = 1.2V, VSHDN = 1.2V, VOUT = 3.3V unless otherwise noted. (Note 2) PARAMETERCONDITIONSMINTYPMAXUNITS Input Start-Up Voltage 0.85 1 V Output Voltage (Note 6) l 3.20 3.30 3.40 V Quiescent Current, VOUT SHDN = VIN (Note 4) 7 15 µA Quiescent Current, VIN SHDN = VIN (Note 4) 0.5 3 µA Quiescent Current, VIN – Shutdown SHDN = 0V, VOUT = VIN = 3.3V 3 10 µA Including Switch Leakage NMOS Switch On-Resistance (Note 3) 0.5 Ω PMOS Switch On-Resistance (Note 3) 0.8 Ω Peak Current Limit 0.4 0.45 A SHDN Threshold Voltage 0.4 0.6 1 V SHDN Input Current VSHDN = VIN or VOUT 0.01 1 µA Note 1: Stresses beyond those listed under Absolute Maximum Ratings Note 3: Specification is guaranteed by design and not 100% tested in may cause permanent damage to the device. Exposure to any Absolute production. Maximum Rating condition for extended periods may affect device Note 4: Current Measurements are performed when the LTC3525D is not reliability and lifetime. switching. Note 2: The LTC3525D is tested under pulsed load conditions such that Note 5: This IC includes overtemperature protection that is intended TJ ≈ TA. The LTC3525DE is guaranteed to meet performance specifications to protect the device during momentary overload conditions. Junction from 0°C to 85°C. Specifications over the –40°C to 85°C operating temperature will exceed 125°C when overtemperature protection is active. junction temperature range are assured by design, characterization and Continuous operation above the specified maximum operating junction correlation with statistical process controls. The LTC3525DI is guaranteed temperature may impair device reliability. over the –40°C to 125°C operating junction temperature range. Note that Note 6: Consult LTC Marketing for other output voltage options. the maximum ambient temperature consistent with these specifications is determined by specific operating conditions in conjunction with board layout, the rated package thermal impedance and other environmental factors. TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula: TJ = TA + (PD • 150°C/W) 3525d33fb For more information www.linear.com/LTC3525D3.3 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Description Revision History Related Parts
