Electronic Components Datasheet Search |
|
LTC3542 Datasheet(PDF) 3 Page - Linear Technology |
|
LTC3542 Datasheet(HTML) 3 Page - Linear Technology |
3 / 16 page LTC3542 3 3542fa TYPICAL PERFORMANCE 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. No pin should exceed 6V. Note 2: The LTC3542 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. The LTC3542I is guaranteed over the full –40°C to 125°C operating temperature range. Note 3: Failure to solder the Exposed Pad of the package to the PC board will result in a thermal resistance much higher than 102°C/W. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IS Input DC Supply Current (Note 5) Active Mode Sleep Mode Shutdown VFB = 0.5V VFB = 0.7V, MODE = 0V RUN = 0V 26 0.1 500 35 1 μA μA μA fOSC Oscillator Frequency VFB = 0.6V ● 1.8 2.25 2.7 MHz fSYNC Synchronous Frequency VFB = 0.6V 1 3 MHz ILIM Peak Switch Current VIN = 3V, VFB = 0.5V, Duty Cycle < 35% 650 1000 mA RDS(ON) P-Channel On Resistance (Note 6) N-Channel On Resistance (Note 6) ISW = 100mA ISW = –100mA 0.5 0.35 0.65 0.55 Ω Ω ISW(LKG) Switch Leakage Current VIN = 5V, VRUN = 0V, VSW = 0V or 5V ±0.01 ±1 μA VUVLO Undervoltage Lockout Threshold VIN Rising VIN Falling 1.8 2.0 1.9 2.3 V V VRUN RUN Threshold ● 0.3 1.5 V IRUN RUN Leakage Current ● ±0.01 ±1 μA VMODE/SYNC MODE/SYNC Threshold ● 0.3 1.2 V IMODE/SYNC MODE/SYNC Leakage Current ● ±0.01 ±1 μA Note 4: The converter is tested in a proprietary test mode that connects the output of the error amplifier to the SW pin, which is connected to an external servo loop. Note 5: Dynamic supply current is higher due to the internal gate charge being delivered at the switching frequency. Note 6: The DFN switch on resistance is guaranteed by correlation to wafer level measurements. Note 7: TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula: TJ = TA + (PD) • (θJA). Burst Mode Operation Pulse Skip Mode Operation Start-Up from Shutdown SW 2V/DIV VIN = 3.6V VOUT = 1.8V ILOAD = 25mA FIGURE 3a CIRCUIT 2 μs/DIV 3542 G01 VOUT 50mV/DIV AC COUPLED IL 100mA/DIV SW 2V/DIV IL 100mA/DIV VIN = 3.6V VOUT = 1.8V ILOAD = 25mA FIGURE 3a CIRCUIT 400ns/DIV 3542 G02 VOUT 50mV/DIV AC COUPLED RUN 2V/DIV IL 100mA/DIV VIN = 3.6V VOUT = 1.8V ILOAD = 0A FIGURE 3a CIRCUIT 400 μs/DIV 3542 G03 VOUT 1V/DIV TA = 25°C unless otherwise specified. ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V unless otherwise noted. |
Similar Part No. - LTC3542 |
|
Similar Description - LTC3542 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |