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LTC3410 Datasheet(PDF) 3 Page - Linear Technology |
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LTC3410 Datasheet(HTML) 3 Page - Linear Technology |
3 / 16 page 3 LTC3410 3410fb SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VUVLO Undervoltage Lockout Threshold VIN Rising 2 2.3 V VIN Falling 1.94 V IS Input DC Bias Current (Note 4) Burst Mode ® Operation VFB = 0.83V or VOUT = 104%, ILOAD = 0A 26 35 µA Shutdown VRUN = 0V 0.1 1 µA fOSC Oscillator Frequency VFB = 0.8V or VOUT = 100% ● 1.8 2.25 2.7 MHz VFB = 0V or VOUT = 0V 310 kHz RPFET RDS(ON) of P-Channel FET ISW = 100mA 0.75 0.9 Ω RNFET RDS(ON) of N-Channel FET ISW = –100mA 0.55 0.7 Ω ILSW SW Leakage VRUN = 0V, VSW = 0V or 5V, VIN = 5V ±0.01 ±1 µA VRUN RUN Threshold ● 0.3 1 1.5 V IRUN RUN Leakage Current ● ±0.01 ±1 µA Burst Mode is a registered trademark of Linear Technology Corporation. The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. VIN = 3.6V unless otherwise specified. ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC3410E is guaranteed to meet performance specifications from 0 °C to 85°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula: LTC3410: TJ = TA + (PD)(250°C/W) Note 4: Dynamic supply current is higher due to the gate charge being delivered at the switching frequency. Note 5: This IC includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125 °C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. TYPICAL PERFOR A CE CHARACTERISTICS Efficiency vs Input Voltage Efficiency vs Output Current (From Figure1 Except for the Resistive Divider Resistor Values) INPUT VOLTAGE (V) 2.5 100 90 80 70 60 50 40 30 45 3410 G02 3 3.5 4.5 5.5 IOUT = 10mA IOUT = 0.1mA IOUT = 100mA VOUT = 1.8V IOUT = 1mA IOUT = 250mA OUTPUT CURRENT (mA) 0.1 0 10 20 30 40 50 60 70 80 90 100 10 100 1 1000 3410 G03 VOUT = 1.8V VIN = 2.7V VIN = 3.6V VIN = 4.2V Efficiency vs Output Current OUTPUT CURRENT (mA) 0.1 0 10 20 30 40 50 60 70 80 90 100 10 100 1 1000 3410 G04 VOUT = 1.2V VIN = 2.7V VIN = 3.6V VIN = 4.2V |
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