ltc3240-3.3 Linear Technology Corporation, ltc3240-3.3 Datasheet
ltc3240-3.3
Related parts for ltc3240-3.3
ltc3240-3.3 Summary of contents
Page 1
... V The LTC3240-3.3/LTC3240-2.5 require only three tiny external ceramic capacitors for an ultrasmall application footprint. The LTC3240-3.3/LTC3240-2.5 are available in a 6-pin (2mm × 2mm) DFN package. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...
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... LTC3240-3.3 LTC3240-2 Load Input Current IN I Shutdown Current ⎯ S ⎯ H ⎯ D ⎯ N η Effi ciency LTC3240-3.3 LTC3240-2.5 ⎯ S ⎯ H ⎯ D ⎯ N Input High Voltage V IH ⎯ S ⎯ H ⎯ D ⎯ N Input Low Voltage V IL ⎯ S ⎯ H ⎯ D ⎯ N Input Current I IH ⎯ ...
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... Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC3240-3.3/LTC3240-2.5 are guaranteed to meet performance specifi cations from 0°C to 85°C. Specifi cations over the W ...
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... I (mA) LOAD 3240 G10 V Soft-Start (LTC3240-3.3) OUT V OUT 2V/DIV SHDN 2V/DIV V = 2.4V 200µs/DIV 66Ω LOAD 4 No-Load Input Current vs Supply Voltage (LTC3240-3.3) 100 1.7 2.2 2.7 3.2 3.7 4.2 4.7 85 SUPPLY VOLTAGE (V) Mode Switch Threshold vs Load Current (LTC3240-2.5) 2.95 2.90 DOUBLER TO LDO 2 ...
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... Flying Capacitor Negative Terminal. ⎯ S ⎯ H ⎯ D ⎯ N (Pin 6): Active Low Shutdown Input. A low on ⎯ S ⎯ H ⎯ D ⎯ N should be bypassed disables the LTC3240-3.3/LTC3240-2.5. This pin is a high IN impedance CMOS input pin which must be driven with valid logic levels. This pin must not be allowed to fl oat. ...
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... LTC3240-3.3/LTC3240-2.5 W BLOCK DIAGRA V 3 OUT SWITCH CONTROL OSCILLATOR – + – 100mV OUT CHARGE PUMP 1, 7 GND SOFT-START 6 SHDN AND 1.2MHz + 4 C – 3204 BD 3240fb ...
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... The LTC3240 provides automatic Burst Mode operation while operating as a charge pump, to increase effi ciency of the power converter at light loads. Burst Mode operation LTC3240-3.3/LTC3240-2.5 is initiated if the output load current falls below an inter- by about 100mV it nally programmed threshold. Once Burst Mode operation ...
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... IN At moderate to high output power, the switching losses and the quiescent current of the LTC3240 are negligible and the expression above is valid. For example, the mea- sured effi ciency of LTC3240-3.3 with V 100mA and V regulating to 3.3V is 64% which is in OUT close agreement with the theoretical value of 66%. ...
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... The fl ying capacitor controls the strength of the charge pump. A 1µF or greater ceramic capacitor is suggested for the fl ying capacitor. For the LTC3240-3.3 operating at an input voltage in the range 1.8V ≤ V necessary to have at least 0.5µF of capacitance for the fl ...
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... LTC3240-3.3/LTC3240-2 APPLICATIO S I FOR ATIO to additional switch resistance. However, for very light load applications, the above expression can be used as a guideline in determining a starting capacitor value. Ceramic Capacitors Ceramic capacitors of different materials lose their ca- pacitance with higher temperature and voltage at differ- ent rates. For example, a capacitor made of X5R or X7R material will retain most of its capacitance from – ...
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... Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC3240-3.3/LTC3240-2 This derating curve assumes a maximum thermal resis- tance, θ ...
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... LTC3240-3.3/LTC3240-2.5 U TYPICAL APPLICATIO RELATED PARTS PART NUMBER DESCRIPTION LTC1751-3.3/LTC1751-5 100mA, 800kHz Regulated Doubler LTC1983-3/LTC1983-5 100mA, 900kHz Regulated Inverter LTC3200-5 100mA, 2MHz Low Noise, Doubler/White LED Driver LTC3202 125mA, 1.5MHz Low Noise, Fractional White LED Driver LTC3204-3.3 Low Noise, Regulated Charge Pumps in (2mm × ...