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LT3473A Datasheet(PDF) 3 Page - Linear Technology |
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LT3473A Datasheet(HTML) 3 Page - Linear Technology |
3 / 12 page 3 LT3473/LT3473A 3473f The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. VIN = 3V, SHDN = 3V, CTRL = 2V, unless otherwise specified. ELECTRICAL CHARACTERISTICS Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LT3473EDD and LT3473AEDE are guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. TYPICAL PERFOR A CE CHARACTERISTICS Load Regulation (Feedback Taken from CAP) LOAD CURRENT (mA) 0 19.00 19.20 19.40 19.60 19.80 CAP OUT 20.00 20.20 20 40 60 80 3473 G01 100 VIN = 3.6V CTRL VOLTAGE (V) 0 0 0.2 0.6 0.8 1.0 1.4 0.2 1 1.4 3473 G02 0.4 1.2 0.8 1.8 2 0.4 0.6 1.2 1.6 CTRL VOLTAGE (V) 0 1.0 1.2 1.4 2 3473 G03 0.8 0.6 0.5 1 1.5 0.4 0.2 0 Feedback Voltage PGOOD Threshold Voltage PARAMETER CONDITIONS MIN TYP MAX UNITS Switching Frequency 0.9 1.2 1.4 MHz Maximum Duty Cycle ● 88 92 % Switch Current Limit ● 1.2 A Switch VCESAT ISW = 100mA 45 mV Switch Leakage Current VSW = 5V 0.1 5 µA Schottky Forward Drop ID = 100mA 0.45 V Schottky Leakage Current CAP = 36V, SW = 0V 4 µA Disconnect PNP Voltage Drop IOUT = 100µA, CAP = 20V 80 mV IOUT = 50mA, CAP = 20V 250 mV Disconnect PNP Quiescent Current CAP = 20V 1.2 µA Disconnect PNP Leakage Current SHDN = OUT = 0V, CAP = 20V 0.01 0.1 µA LTC3473A Only NPN1 Voltage Drop INE1 = 1mA 0.8 V NPN1 Beta INE1 = 1mA 60 NPN2 Voltage Drop INE2 = 1mA 0.8 V NPN2 Beta INE2 = 1mA 60 Note 3: Failure to correctly solder the Exposed Pad of the package to the PC board will result in a thermal resistance much higher than 40°C. TA = 25°C unless otherwise noted. |
Similar Part No. - LT3473A_15 |
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Similar Description - LT3473A_15 |
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