ltc3525d Linear Technology Corporation, ltc3525d Datasheet
ltc3525d
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ltc3525d Summary of contents
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... Other features include anti-ringing control and thermal shutdown. The LTC3525D is available in a tiny 6-pin SC70 package. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Burst Mode is a registered trademark of Linear Technology Corporation. ...
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... V ⎯ S ⎯ H ⎯ D ⎯ OUT Note 4: Current Measurements are performed when the LTC3525D is not switching. 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. ...
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... LOAD (mA) V Variation vs Temperature OUT (Normalized to 25°C) 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 10 –40–30–20– TEMPERATURE (°C) LTC3525D-3 25°C unless otherwise noted No-Load Input Current 1.0 1.5 2.0 2.5 3.0 2.5 3.0 V (V) IN ...
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... LTC3525D-3 TYPICAL PERFOR A CE CHARACTERISTICS Output Voltage Ripple I = OUT 5mA I = OUT 40mA I = OUT 80mA 50µs/DIV 10µF OUT Output Voltage Ripple I = OUT 5mA I = OUT 100mA I = OUT 190mA 50µs/DIV 22µF OUT OUT 5mA I = OUT 50mV/DIV ...
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... CTIO S ⎯ S ⎯ H ⎯ D ⎯ N (Pin 1): Logic Controlled Shutdown Input. Connect to a voltage >1V to enable the LTC3525D. Connect to a voltage <0.4V to disable the LTC3525D and connect through the inductor. OUT GND (Pins 2, 5): Ground. V (Pin 3): Input Voltage. The LTC3525D is powered from ...
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... Shutdown The LTC3525D is shut down by pulling ⎯ S ⎯ H ⎯ D ⎯ N below 0.4V, and made active by raising it above 1V. Note that ⎯ S ⎯ H ⎯ D ⎯ N can be driven as high as 6V, however more than 0.9V , the ⎯ S ⎯ H ⎯ D ⎯ N input current ...
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... When the output voltage reaches its regulated value both switches are turned off and the LTC3525D goes to sleep, during which time the output capacitor supplies current to the load. Once the output voltage drops approximately 9mV below the regulation value the IC leaves sleep mode and switching is resumed ...
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... Mode operation or hysteretic converters will enter the audible frequency range when the load is light enough. However, due to the low peak inductor current at light load, circuits using the LTC3525D do not typically generate any audible noise. Component Selection Inductor values between 4.7µH and 15µH are recom- mended. In most applications 10µ ...
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... USA: (847) 956-0702 (408) 573-4159 FAX USA: (814) 238-0490 (408) 573-4159 (847) 803-6296 (803) 448-1943 SHDN SW LTC3525D-3.3 GND GND OUT Figure 2. Recommended Component Placement LTC3525D-3.3 WEBSITE www.murata.com www.coilcraft.com www.sumida.com www.t-yuden.com WEBSITE www.murata.com www.t-yuden.com www.component.tdk.com www.avxcorp.com V OUT 3525 F02 3525d33f 9 ...
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... Single Alkaline or NiMH to 3.3V Converter with 1mm Profi 1.6V 1.8V to 3.2V 10 6.8µH* LTC3525D-3 SHDN V OUT PASS THROUGH ON 2 GND GND 1µF *COILCRAFT LPO3310-682MXD **MURATA GRM219R60J106KE191D 2-Alkaline or NiMH to 3.3V 10µH* LTC3525D-3 SHDN V OUT PASS THROUGH GND GND 1µF *MURATA LQH32CN1002K53 6 V OUT 4 3.3V ...
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... U SC6 Package 6-Lead Plastic SC70 (Reference LTC DWG # 05-08-1638 Rev B) 1.00 REF 1.15 – 1.35 1.80 – 2.40 (NOTE 4) 0.65 BSC 0.80 – 1.00 1.00 MAX 0.10 – 0.18 (NOTE 3) LTC3525D-3.3 1.80 – 2.20 (NOTE 4) INDEX AREA (NOTE 6) PIN 1 0.15 – 0.30 6 PLCS (NOTE 3) 0.00 – 0.10 REF SC6 SC70 1205 REV B 3525d33f 11 ...
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... LTC3525D-3.3 RELATED PARTS PART NUMBER DESCRIPTION ® LT 1615/LT1615-1 300mA/80mA (I SW LT1930/LTC1930A 1.2MHz/2MHz, High Effi ciency Step-Up DC/DC Converter High Effi ciency LTC3400/LTC3400B 600mA (I ), 1.2MHz, Synchronous Step-Up DC/DC Converter SW LTC3401 3MHz, Synchronous Step-Up DC/DC Converter SW LTC3402 3MHz, Synchronous Step-Up DC/DC Converter SW LTC3421 ...