LTC3109 Linear Technology, LTC3109 Datasheet
LTC3109
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LTC3109 Summary of contents
Page 1
... Extremely low quies- cent current and high efficiency maximizes the harvested energy available for the application. The LTC3109 is available in a small, thermally enhanced 20-lead (4mm × 4mm) QFN package and a 20-lead SSOP package. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation ...
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... LTC3109IUF#PBF LTC3109IUF#TRPBF LTC3109EGN#PBF LTC3109EGN#TRPBF LTC3109IGN#PBF LTC3109IGN#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: ...
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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 LTC3109 is tested under pulsed load conditions such that T ≈ The LTC3109E is guaranteed to meet specifications from ...
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... LTC3109 elecTrical characTerisTics board layout, the rated thermal package thermal resistance and other environmental factors. The junction temperature (T the ambient temperature (T ) and power dissipation (P A the formula • θ °C/W), where θ impedance. Note 3: Specification is guaranteed by design and not 100% tested in production ...
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... PGOOD Response OUT During a Step Load 50mA LOAD STEP C = 220µF OUT CH2 V OUT 1V/DIV OUT CH1 LDO PGD 1V/DIV 5ms/DIV www.DataSheet4U.com LTC3109 T = 25°C, unless otherwise noted and TEG Size, VOUT 1:100 Ratio OUT 3.0 2.5 FERROTEC 9500/127/100B 40mm 2.0 1.5 1.0 0.5 ...
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... LTC3109 Typical perForMance characTerisTics LDO Step Load Response V LDO 20mV/DIV I LDO 5mA/DIV 3109 G15 200µs/DIV 0mA TO 3mA LOAD STEP C = 2.2µF LDO pin FuncTions (QFN/SSOP) VSTORE (Pin 1/Pin 3): Output for the Storage Capacitor or Battery. A large storage capacitor may be connected from this pin to GND for powering the system in the event the input voltage is lost ...
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... Switch for Channel A. Connect this pin to one side of the input voltage source (see Typical Applications). V (Pin 13/Pin 15): Connection to the Internal N-Channel INB Switch for Channel B. Connect this pin to the other side of the input voltage source (see Typical Applications). www.DataSheet4U.com LTC3109 3109f ...
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... LTC3109 block DiagraM C1B SYNC RECTIFY C1A • • C2A V IN C2B SWA V INA POWER • • SWITCHES SWB V INB SYNC RECTIFY V REF REFERENCE 1.2V 5.25V + CHARGE – V CONTROL OUT V STORE V REF V OUT LDO V REF VAUX VLDO C 2.2V AUX 1µF C LDO 2.2µF www.DataSheet4U.com ...
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... The LTC3109 can also be used to trickle charge a standard capacitor, super capacitor or rechargeable battery, using energy harvested from a TEG or low level AC source. ...
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... LTC3109 operaTion (Refer to the Block Diagram) V storage capacitor is still charging. In the event of a OUT step load on the LDO output, current can come from the main V reservoir capacitor. The LDO requires a 2.2µF OUT ceramic capacitor for stability. Larger capacitor values can be used without limitation, but will increase the time it takes for all the outputs to charge up ...
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... Note that VSTORE is not intended to supply high pulse load currents to V has reached handled by the V OUT Short-Circuit Protection All outputs of the LTC3109 are current limited to protect against short circuits to ground. , OUT Output Voltage Sequencing A timing diagram showing the typical charging and voltage sequencing of the outputs is shown in Figure 1 ...
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... TEG plates. The magnitude of the output volt- age is proportional to the magnitude of the temperature differential between the plates. The low voltage capability of the LTC3109 design allows it to operate from a typical TEG with temperature differentials as low as 1°C of either polarity, making it ideal for harvest- ...
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... TEGs in different locations. In this configuration, energy can be harvested from either or both sources simultaneously. See the Typical Applications for an example. The LTC3109 can also be configured to operate from a single unipolar source, using a single step-up transformer, by ganging its V and SW pins together. In this manner, ...
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... C1 = 68nF 450 400 350 300 250 200 150 100 100 V (mV C1A V • OUT2 1nF LTC3109 C2A V OUT 330k SWA VLDO V INA C1B C2B PG00D SWB V V INB OUT2_EN VS1 V VSTORE OUT SET VS2 VAUX GND , T1, C1 AND C ...
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... LPR6235-123QML (1:50 ratio) 85mV LPR6235-253PML (1:20 ratio) USING EXTERNAL CHARGE PUMP RECTIFIERS The synchronous rectifiers in the LTC3109 have been optimized for low frequency, low current operation, typical of low input voltage applications. For applications where the resonant oscillator frequency exceeds 100kHz transformer turns ratio of less than 1:20 is used, or the ...
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... Any small voltage drop in the primary winding conduction path will lower efficiency and increase start-up voltage and capaci- tor charge time. Also, due to the low charge currents available at the out puts of the LTC3109, any sources of leakage current on • t • f • t ...
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... Note that this must include any losses, such as storage capacitor leakage. Let’s assume that the charge current available from the LTC3109 is 150µA and the total current draw on V VLDO in the sleep state is 17µA, including capacitor leakage. We’ll also use the value of 330µF for the V ...
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... Note that for 3.3V, the average power required by this application is only 17µW (not including converter losses). Keep in mind that the charge current available from the LTC3109 has no effect on the sizing of the V and the V OUT allowed pulse rate. ...
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... OUT2 470pF 3.3V C2A V OUT 2.2V SWA VLDO 2.2µF V INA T2 1nF LTC3109 1:100 C1B • • 470pF C2B PG00D SWB V OUT2_EN V INB 5.25V VS1 VSTORE VS2 VAUX 1µF GND www.DataSheet4U.com LTC3109 + 470µF LOW POWER RADIO SENSOR(S) µ STORE 3109 TA02 3109f ...
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... V INB VS1 VSTORE VS2 VAUX 1µF GND 3109 TA03 Unipolar Energy Harvester Charges Battery Backup T1 33nF 1:50 C1A V • OUT2 1nF C2A V OUT 330k LTC3109 2.2V SWA VLDO V 2.2µF INA C1B C2B PG00D SWB V OUT2_EN V INB VS1 VSTORE VAUX VS2 GND 9 10 www.DataSheet4U.com ...
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... COILCRAFT LPR6235-123QML 4.7nF VLDO 1:50 C1B + • • 470pF – C2B PG00D SWB V OUT2_EN V INB VS1 VSTORE VS2 VAUX GND *THE VALUE OF THE C DETEMINED BY THE LOAD CHARACTERISTICS www.DataSheet4U.com LTC3109 5V V OUT OUT + C * OUT 2.2V VLDO 2.2µF PG00D 1µF 3109 TA04 CAPACITOR IS OUT 3109f ...
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... LTC3109 package DescripTion 4.50 0.05 3.10 0.05 2.45 0.05 2.00 REF 2.45 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED 4.00 0.10 PIN 1 TOP MARK (NOTE 6) 4.00 0.10 NOTE: 1. DRAWING IS PROPOSED TO BE MADE A JEDEC PACKAGE OUTLINE MO-220 VARIATION (WGGD-1)—TO BE APPROVED 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4 ...
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... BSC .015 .004 45 .0532 – .0688 (0.38 0.10) (1.35 – 1.75) 0 – 8 TYP .008 – .012 (0.203 – 0.305) TYP www.DataSheet4U.com LTC3109 .337 – .344* (8.560 – 8.738) .058 (1.473 REF .150 – .157** (3.810 – 3.988 ...
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... Disconnect Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● VAUX BAS31 SWITCHED V GOES HIGH OUT WHEN PGOOD IS HIGH C1A V V OUT2 OUT2 0.1µF LTC3109 3.3V V C2A V OUT OUT + SWA C OUT V INA 2.2V C1B VLDO VLDO 2.2µF C2B ...