LTC3108-1_12 LINER [Linear Technology], LTC3108-1_12 Datasheet
LTC3108-1_12
Related parts for LTC3108-1_12
LTC3108-1_12 Summary of contents
Page 1
... The LTC3108-1 is functionally equivalent to the LTC3108 except for its unique fi xed V The LTC3108-1 is available in a small, thermally enhanced 12-lead (3mm × 4mm) DFN package and a 16-lead SSOP package. 5.25V ...
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... LTC3108EDE-1#TRPBF LTC3108IDE-1#PBF LTC3108IDE-1#TRPBF LTC3108EGN-1#PBF LTC3108EGN-1#TRPBF LTC3108IGN-1#PBF LTC3108IGN-1#TRPBF Consult LTC Marketing for parts specifi ed for other fi xed output voltages or wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. ...
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... Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC3108-1 is tested under pulsed load conditions such that T ≈ The LTC3108-1E is guaranteed to meet specifi cations from ...
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... LTC3108-1 TYPICAL PERFORMANCE CHARACTERISTICS 0V OUT 1000 1:50 RATIO 4.7n 1:100 RATIO 1:20 RATIO 10n 100 100 V (mV and Effi ciency vs V VOUT 1:50 Ratio Transformer 3200 C1 = 4.7nF 2800 2400 EFFICIENCY (V = 4V) OUT 2000 1600 1200 800 400 0 0 100 ...
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... RATIO 1:100 RATIO 10 100 31081 G08 LDO Dropout Voltage 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00 0 2.5 3 3.5 4 31081 G10 LTC3108 25°C, unless otherwise noted and Source Resistance, IN 1Ω 2Ω 5Ω 10Ω 100 200 300 400 500 V OPEN-CIRCUIT (mV) IN 31081 G07 = 20mV 31081 G09 10μs/DIV ...
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... LTC3108-1 TYPICAL PERFORMANCE CHARACTERISTICS Start-Up Voltage Sequencing V = 50mV IN 1:100 RATIO TRANSFORMER C = 220μF OUT CSTORE = 470μ 2.2μF LDO 10sec/DIV V Ripple OUT 30μA LOAD C = 220μF OUT 20mV/ DIV 100ms/DIV Enable Input and V CH2 V OUT2 1V/DIV CH1 V OUT2_EN 1V/DIV 1ms/DIV 10mA LOAD ON V ...
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... Table 1. Regulated Voltage Using Pins VS1 and VS2 VS2 is OUT GND GND drops 9% OUT VAUX VAUX LTC3108-1 Select Pin 1. Connect this pin OUT (Pin 9/Pin 12): Enable Input for V OUT2 VS1 GND VAUX GND VAUX . V OUT2 ...
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... The LTC3108-1 can also be used to trickle charge a standard capacitor, supercapacitor or rechargeable battery, using energy harvested from a Peltier or photovoltaic cell. V OUT2 1.3Ω ...
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... C1) and the rectifi ers internal to the LTC3108-1. The rectifi er circuit feeds current into the VAUX pin, provid- ing charge to the external VAUX capacitor and the other outputs ...
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... must be handled by the V OUT Short-Circuit Protection All outputs of the LTC3108-1 are current limited to protect against short-circuits to ground. Output Voltage Sequencing A timing diagram showing the typical charging and voltage sequencing of the outputs is shown in Figure 1. Note: time not to scale. ...
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... OPERATION 5.0 2.5 0 3.0 2.0 1.0 0 5.0 2.5 0 3.0 2.0 1.0 0 5.0 2 Figure 1. Output Voltage Sequencing with V VSTORE (V) PGD (V) V (V) OUT VLDO (V) VAUX ( TIME (ms) Programmed for 3V (Time Not to Scale) OUT LTC3108 31081 F01a 31081fa 11 ...
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... V OUT indicating that enough energy is available for a burst. Input Voltage Sources The LTC3108-1 can operate from a number of low input voltage sources, such as Peltier cells, photovoltaic cells or thermopile generators. The minimum input voltage required for a given application will depend on the transformer turns ratio, the load power required, and the internal DC resistance (ESR) of the voltage source ...
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... APPLICATIONS INFORMATION this manner, a Peltier cell is referred thermoelectric generator (TEG). The low voltage capability of the LTC3108-1 design allows it to operate from a TEG with temperature differentials as low as 1°C, making it ideal for harvesting energy in applications in which a temperature difference exists between two surfaces or between a surface and the am- bient temperature. The internal resistance (ESR) of most cells is in the range of 1Ω ...
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... For applications in which the temperature rise is too high for a solid-state thermoelectric device, a thermopile can be used as an energy source to power the LTC3108-1. Because of the higher output voltages possible with a thermopile generator, a lower transformer turns ratio can be used (typically 1:20, depending on the application) ...
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... Squegging is also encountered in RF oscillators and regenerative receivers. In the case of the LTC3108-1, squegging can occur when a charge builds up on the C2 gate coupling capacitor, such that the DC bias point shifts and oscillation is extinguished for a certain period of time, until the charge on the capacitor bleeds off, allowing oscillation to resume diffi ...
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... Due to the very low input voltage the circuit may operate ] • t • f) • TSTORE from, the connections to V and the SW and GND pins of the LTC3108-1 should be OUT designed to minimize voltage drop from stray resistance Q and able to carry currents as high as 500mA. Any small ...
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... Note that this must include any losses, such as storage capacitor leakage. Assume, for instance, that the charge current from the LTC3108-1 is 50μA and the total current drawn the sleep state is 17μA, including capacitor leakage. In addition, use the value of 150μF for the V ...
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... LTC3108-1 would be: ≥ 5μ CHG Therefore, if the LTC3108-1 has an input voltage that al- lows it to supply a charge current greater than 5.14μA, the application can support 100mA bursts lasting 5ms every hour. It can be determined that the sleep current of 5μA is the dominant factor because the transmit duty cycle is so small (0.00014%). Note that for a V power required by this application is only 15.4μ ...
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... PAS1020LA3R0405 4.7μF 31081 TA03 T1 4.7nF 1:50 C1 220μF 330pF LTC3108-1 C2 499k SW VS2 VS1 V VAUX GND 2.2μF 31081 TA04 LTC3108 Illuminance VOUT (2 " Diameter Monocrystalline Cell) 10,000 INCANDESCENT LIGHT 1000 OUTDOOR LIGHT (CLOUDY) 100 FLOURESCENT LIGHT 10 100 1000 10,000 ILLUMINANCE (LUX) VSTORE ...
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... V V OUT2_EN OUT2_ENABLE VAUX GND 31081 TA05 2.2μF AC Input Energy Harvester and Power Manager 5.25V C1 VSTORE OUT2 OUT2 > P-P PGD PGOOD LTC3108-1 C2 VLDO 4. OUT + VS2 V VS1 V OUT2_ENABLE OUT2_EN VAUX GND 31081 TA06 2.2μ STORE 2.2V VLDO 2.2μF V OUT ...
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... V ≤ 3V OUT TYPICAL 5 4 MINIMUM LIMIT 150 200 250 300 350 400 450 500 550 V (mV) IN LTC3108 20mA V OUT2 0.1μF 10ms PGOOD 2.2V VLDO 2.2μF 3V OUT + 330μF 3 AVX TPSX337M004R0100 2.2V ENABLE OFF ON 10ms 31081 TA07 600 31081 TA07b ...
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... LTC3108-1 PACKAGE DESCRIPTION Please refer to http://www.linear.com/designtools/packaging/ 0.70 ±0.05 3.30 ±0.05 3.60 ±0.05 2.20 ±0.05 1.70 ±0.05 PACKAGE OUTLINE 0.25 ±0.05 0.50 BSC 2.50 REF RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED .254 MIN .0165 ±.0015 RECOMMENDED SOLDER PAD LAYOUT .007 – .0098 (0.178 – ...
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... Added vendor information to Table 5 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC3108-1 PAGE NUMBER 14 31081fa ...
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... C2 LTC3108-1 499k SW VS2 LPR6235-752SML VS1 V OUT2_EN VAUX GND 1μF VAUX 1nF 1:100 C1 VSTORE 330pF LTC3108-1 C2 499k SW VS2 LPR6235-752SML V VS1 OUT2_EN VAUX GND COMMENTS : 0.02V to 1V 3mm × 4mm DFN-12 and SSOP-16 Packages V : 450nA to 50mA 2mm × 3mm DFN-8 and MSOP-8 Packages V : 2.8V to 16V ...