ltc3405a-1.375 Linear Technology Corporation, ltc3405a-1.375 Datasheet
ltc3405a-1.375
Related parts for ltc3405a-1.375
ltc3405a-1.375 Summary of contents
Page 1
... PCB footprint. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. The LTC3405A-1.375 is available in a low profile (1mm) ThinSOT package. For other output voltages, refer to the LTC3405A and LTC3405A-1.5/LTC3405A-1.8 data sheets. ...
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... 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 ...
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... OUTPUT CURRENT (mA) Oscillator Frequency vs Supply Voltage 1.8 1.7 1.6 1.5 1.4 1.3 1.2 125 SUPPLY VOLTAGE ( 3405A1375 G07 LTC3405A-1.375 T = 25°C unless otherwise noted. A Efficiency vs Output Current 100 3.6V 4.2V 40 3.6V 4. 1000 OUTPUT CURRENT (mA) 3405A1375 G02 Output Voltage vs Load Current 1 ...
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... LTC3405A-1.375 W U TYPICAL PERFOR A CE CHARACTERISTICS (From Figure 1a) Dynamic Supply Current vs Supply Voltage 1600 LOAD 1400 1200 1000 800 600 400 PULSE SKIPPING MODE 200 Burst Mode OPERATION 0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) 3405A1375 G09 Switch Leakage vs Input Voltage 60 RUN = 0V 50 SYNCHRONOUS ...
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... MODE (Pin 6): Mode Select Input. To select pulse skip- ping mode, tie to V Mode operation. Do not leave this pin floating. LTC3405A-1.375 = 25°C unless otherwise noted. Load Step V OUT ...
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... Burst Mode Operation The LTC3405A-1.375 is capable of Burst Mode operation in which the internal power MOSFETs operate intermit- tently based on load demand. To enable Burst Mode operation, simply connect the MODE pin to GND. To ...
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... The choice of which style induc- (1) tor to use often depends more on the price vs size requirements and any radiated field/EMI requirements than on what the LTC3405A-1.375 requires to operate. LTC3405A-1.375 rises above 0V. OUT ) will cause this ...
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... V V − IN OUT for switching regulator applications. Because the LTC3405A-1.375’s control loop does not depend on the V IN output capacitor’s ESR for stable operation, ceramic ca where pacitors can be used freely to achieve very low output IN OUT ripple and small circuit size. ...
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... F02 power switches will be turned off and the SW node will become high impedance. To keep the LTC3405A-1.375 from exceeding the maxi- mum junction temperature, the user will need to do some thermal analysis. The goal of the thermal analysis is to determine whether the power dissipated exceeds the maximum junction temperature of the part ...
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... A R where T is the ambient temperature example, consider the LTC3405A-1.375 with an input voltage of 2.7V, a load current of 300mA and an ambient temperature of 70°C. From the typical perfor- mance graph of switch resistance, the R channel switch at 70°C is approximately 0.94Ω and the ...
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... 60mA and L ⎞ ⎟ ≅ µ ⎠ Figure 5b. LTC3405A-1.375 Small Footprint Efficiency C IN 3405A1518 F04 100mV/DIV COUPLED 200mA/DIV will require an OUT 200mA/DIV V OUT 1.375V C ...
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... LTC3405A-1.375 PACKAGE DESCRIPTIO 0.754 0.754 0.854 ± 0.127 0.854 ± 0.127 3.254 3.254 0.95 BSC 0.95 BSC 1.9 BSC 1.9 BSC RECOMMENDED SOLDER PAD LAYOUT RECOMMENDED SOLDER PAD LAYOUT NOTE: 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 1. DIMENSIONS ARE IN MILLIMETERS 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 2 ...