ltc1754-5 Linear Technology Corporation, ltc1754-5 Datasheet
ltc1754-5
Related parts for ltc1754-5
ltc1754-5 Summary of contents
Page 1
... – 3.25 3.20 2.0 2.5 3.0 3.5 SUPPLY VOLTAGE (V) LTC1754-3.3/LTC1754-5 Micropower, Regulated Shutdown in SOT-23 U ® 1754 is a micropower charge pump DC/DC and V ) make the LTC1754 IN OUT switched capaci- to GND. OUT LTC1754-5 Output Voltage vs Supply Voltage 5. 25mA OUT OUT 5. FLY 5. 5.00 T 4.95 4.90 4.85 4.0 4.5 2.5 3.0 3.5 4 ...
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... CC V Output Ripple R Efficiency f Switching Frequency OSC t V Turn-On Time ON OUT I Output Short-Circuit Current SC LTC1754-3.3/LTC1754-5 I Shutdown Supply Current SHDN V SHDN Input Threshold (High SHDN Input Threshold (Low SHDN Input Current (High SHDN Input Current (Low) IL Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired ...
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... G04 Output Ripple V OUT AC COUPLED 20mV/DIV s/DIV 1754 G07 OUT I = 20mA OUT LTC1754-3.3/LTC1754-5 LTC1754-3. unless otherwise noted. A Supply Current vs V SHDN OUT 2. 4 ...
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... G13 Output Ripple V OUT AC COUPLED 20mV/DIV s/DIV 1754 G16 OUT I = 50mA OUT LTC1754- unless otherwise noted. A Supply Current vs V SHDN OUT ...
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... W U TYPICAL PERFOR A CE CHARACTERISTICS LTC1754-3.3. LTC1754- unless otherwise noted. A Efficiency vs Supply Voltage 100 FLY 90 80 LTC1754 25mA OUT LTC1754-3 20mA OUT 40 30 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) 1754 G19 CTIO S V (Pin 1): Regulated Output Voltage. For best perfor- ...
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... OUT At moderate-to-high output power, the switching losses and quiescent current of the LTC1754 are negligible and the expression above is valid. For example, an LTC1754-5 with 3V measured efficiency of 82.7%, which is in close agreement with the theoretical 83.3% calculation. The LTC1754 con- tinues to maintain good efficiency even at fairly light loads because of its inherently low power design ...
Page 7
... ESR of the output capacitor proportional to the input voltage, the value of the flying capacitor and the ESR of the output capacitor. Typical combined output ripple for the LTC1754-5 with under maximum load is 65mV output capacitor ...
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... SHDN C LOW I MODE (2Hz TO 100Hz DUTY CYCLE) Q Figure 2. Ultralow Quiescent Current Regulated Supply OUT FLY LTC1754 LTC1754-3 4.0 2.0 2.5 3.0 3.5 4.5 SUPPLY VOLTAGE (V) Figure 3. No-Load Supply Current vs Supply Voltage for the Circuit Shown in Figure ...
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... SHDN GND LTC1540 6 10k USB Port to Regulated 5V Power Supply LTC1754 LTC1754-3.3/LTC1754-5 1 LTC1521-3 3.3V OUT I 300mA OUT I 20mA BACKUP 10 F OUT HIGH = BACKUP MODE 175433 TA03 1 V OUT 50mA 1754 TA06 ...
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... LTC1754 SHDN GND 3.3V and 5V Step-Up Generator from – + – OUT LTC1754-3.3 LTC1754 SHDN GND SHDN V OUT 5V 100mA 10 F 1754 TA07 100 100 100 10 F 1754 TA08 V OUT1 3. 20mA 3 ...
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... REF (0.110 – 0.118) 1.50 – 1.75 0.00 – 0.15 (0.059 – 0.069) (0.00 – 0.006) 0.35 – 0.50 0.09 – 0.20 (0.014 – 0.020) (0.004 – 0.008) SIX PLACES (NOTE 2) (NOTE 2) LTC1754-3.3/LTC1754-5 0.95 (0.037) REF 0.90 – 1.45 (0.035 – 0.057) 0.90 – 1.30 (0.035 – 0.051) S6 SOT-23 0898 11 ...
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... Low Noise Doubler Charge Pump Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com – OUT + 10 F 3-CELL LTC1754-5 NiCd 3 BATTERY SHDN GND 2 BAT54C LTC1540 6 10k COMMENTS Up to 100mA Output 18V, 15V to – ...