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LTC3405A-1.375 数据表(PDF) 2 Page - Linear Technology |
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LTC3405A-1.375 数据表(HTML) 2 Page - Linear Technology |
2 / 12 page 2 LTC3405A-1.375 3405a1375f SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IPK Peak Inductor Current VIN = 3V, VOUT = 1.238V, Duty Cycle < 35% 375 500 625 mA VOUT Regulated Output Voltage MODE = 3.6V ● 1.334 1.375 1.416 V ∆VOVL ∆Output Overvoltage Lockout ∆VOVL = VOVL – VOUT 2 5.6 9.3 % ∆VOUT Output Voltage Line Regulation VIN = 2.5V to 5.5V ● 0.04 0.4 %/V VLOADREG Output Voltage Load Regulation 0.5 % VIN Input Voltage Range ● 2.5 5.5 V IS Input DC Bias Current (Note 4) Pulse Skipping Mode VOUT = 1.238V, MODE = 3.6V, ILOAD = 0A 300 400 µA Burst Mode ® Operation VOUT = 1.42V, MODE = 0V, ILOAD = 0A 20 35 µA Shutdown VRUN = 0V, VIN = 4.2V 0.1 1 µA fOSC Oscillator Frequency VOUT = 1.375V ● 1.2 1.5 1.8 MHz VOUT = 0V 170 kHz RPFET RDS(ON) of P-Channel FET ISW = 100mA 0.7 0.85 Ω RNFET RDS(ON) of N-Channel FET ISW = –100mA 0.6 0.90 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 VMODE MODE Threshold ● 0.3 1.5 2 V IMODE MODE Leakage Current ● ±0.01 ±1 µA LTC3405AES6-1.375 TJMAX = 125°C, θJA = 250°C/ W ORDER PART NUMBER (Note 1) Input Supply Voltage .................................. – 0.3V to 6V MODE, RUN, VOUT Voltages....................... – 0.3V to VIN SW Voltage .................................. – 0.3V to (VIN + 0.3V) P-Channel Switch Source Current (DC) ............. 400mA N-Channel Switch Sink Current (DC) ................. 400mA Peak SW Sink and Source Current .................... 630mA Operating Temperature Range (Note 2) .. – 40°C to 85°C Junction Temperature (Note 3) ............................ 125°C Storage Temperature Range ................ – 65°C to 150°C Lead Temperature (Soldering, 10 sec)................. 300°C S6 PART MARKING Consult LTC Marketing for parts specified with wider operating temperature ranges. The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. VIN = 3.6V unless otherwise specified. ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO ELECTRICAL CHARACTERISTICS RUN 1 GND 2 SW 3 6 MODE 5 VOUT 4 VIN TOP VIEW S6 PACKAGE 6-LEAD PLASTIC TSOT-23 Burst Mode is a registered trademark of Linear Technology Corporation. Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LTC3405A-1.375 is 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. Note 3: TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula: LTC3405A-1.375: TJ = TA + (PD)(250°C/W) Note 4: Dynamic supply current is higher due to the gate charge being delivered at the switching frequency. LTBRP |
类似零件编号 - LTC3405A-1.375 |
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类似说明 - LTC3405A-1.375 |
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