LTC3108-1

LTC3588-2_10 LINER

Document overview

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Technical content

DescripTion

The L TC®3588-2 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric transducers. An ultralow quiescent current undervoltage lockout (UVLO) mode with a 16V rising threshold enables efficient energy extraction from piezoelectric transducers with high open circuit voltages. This energy is transferred from the input capacitor to the output via a high efficiency synchronous buck regulator . The 16V UVLO threshold also allows for input to output current multiplication through the buck regulator . The buck features a sleep state that minimizes both input and output quiescent currents while in regulation. Four output voltages of 3.45V , 4.1V , 4.5V and 5.0V are pin selectable with up to 100mA of continuous output current, and suit Li-Ion and LiFePO 4 batteries as well as supercapacitors. An input protective shunt set at 20V provides overvoltage protection. L, L T , L TC, L TM, Linear Technology, the Linear logo and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. High Voltage Piezoelectric Energy Harvesting Power Supply

FeaTures

applicaTions

n 1500nA Input Quiescent Current (Output in Regulation – No Load, VIN = 18V) n 830nA Input Quiescent Current in UVLO, VIN = 12V n 14V to 20V Input Operating Range n Integrated Low-Loss Full-Wave Bridge Rectifier n 16V UVLO Improves Power Utilization from High Voltage Current Limited Inputs n Up to 100mA of Output Current n High Efficiency Integrated Hysteretic Buck DC/DC n Selectable Output Voltages: 3.45V , 4.1V , 4.5V , 5.0V n Input Protective Shunt – Up to 25mA Pull-Down at V IN ≥ 20V n Available in 10-Lead MSE and 3mm × 3mm DFN Packages n Piezoelectric Energy Harvesting n Electro-Mechanical Energy Harvesting n Low Power Battery Charging n Wireless HVAC Sensors n Mobile Asset T racking n Tire Pressure Sensors n Battery Replacement for Industrial Sensors

35882 TA01

V IN2 PZ2 SW VOUT PGOOD D0, D1 L TC3588-2 MIDE V25W GND 1µF 4.7µF 10µF 25V C STORAGE OUTPUT VOL TAGE SELECT V OUT 22µH L TC3588-2 5.0V Regulator Start-Up Profile TIME (sec) VOL TAGE (V) 200

35882 TA01b

PGOOD = LOGIC 1 CIN = 10µF , CSTORAGE = 47µF NO LOAD, IVIN = 2µA

igher of –0.3V or (VIN – 6V)] to VIN (Note 1) TOP VIEW GND DD PACKAGE 10-LEAD (3mm × 3mm) PLASTIC DFN

1 PGOOD

V IN2 VOUT PZ1 PZ2 CAP V IN SW TJMAX = 125°C, θJA = 43°C/W , θJC = 7.5°C/W EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB PZ1 PZ2 CAP V IN SW PGOOD V IN2 VOUT TOP VIEW MSE PACKAGE 10-LEAD PLASTIC MSOP GND TJMAX = 125°C, θJA = 45°C/W , θJC = 10°C/W EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB pin conFiguraTion orDer inForMaTion LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE L TC3588EDD-2#PBF L TC3588EDD-2#TRPBF LFYK 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C L TC3588IDD-2#PBF L TC3588IDD-2#TRPBF LFYK 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C L TC3588EMSE-2#PBF L TC3588EMSE-2#TRPBF L TFYM 10-Lead Plastic MSOP –40°C to 125°C L TC3588IMSE-2#PBF L TC3588IMSE-2#TRPBF L TFYM 10-Lead Plastic MSOP –40°C to 125°C Consult L TC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container . For more information on lead free part marking, go to: http://www.linear .com/leadfree/ This product is only offered in trays. For more information go to: http://www.linear .com/packaging/ 0.3V to [Lesser of (VOUT + 0.3V) or 6V] Operating Junction Temperature Range 40 to 125°C 65 to 125°C Lead Temperature (Soldering, 10 sec) MS 00°C * VIN has an internal 20V clamp † For t < 1ms and Duty Cycle < 1%, Absolute Maximum Continuous Current = 5mA

elecTrical characTerisTics The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are for TA = 25°C (Note 2). VIN = 18V unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Input Voltage Range Low Impedance Source on VIN l 18.0 V IQ VIN Quiescent Current UVLO Buck Enabled, Sleeping Buck Enabled, Not Sleeping VIN = 12V , Not PGOOD VIN = 18V ISW = 0A (Note 4) 830 1500 150 1400 2500 250 nA nA µA V UVLO VIN Undervoltage Lockout Threshold V IN Rising l 16.0 17.0 V VIN Falling l 13.0 14.0 V VSHUNT VIN Shunt Regulator Voltage IVIN = 1mA 18.8 20.0 21.2 V ISHUNT Maximum Protective Shunt Current 1ms Duration 25 mA Internal Bridge Rectifier Loss (|V PZ1 – VPZ2| – VIN) IBRIDGE = 10µA 350 400 450 mV Internal Bridge Rectifier Reverse Leakage Current V REVERSE = 18V 20 nA Internal Bridge Rectifier Reverse Breakdown Voltage I REVERSE = 1µA VSHUNT 30 V VOUT Regulated Output Voltage 3.45V Output Selected Sleep Threshold Wake-Up Threshold 4.1V Output Selected Sleep Threshold Wake-Up Threshold 4.5V Output Selected Sleep Threshold Wake-Up Threshold 5.0V Output Selected Sleep Threshold Wake-Up Threshold l l l l l l l l 3.346 3.979 4.354 4.825 3.466 3.434 4.116 4.084 4.516 4.484 5.016 4.984 3.554 4.221 4.646 5.175 V V V V V V V V PGOOD Falling Threshold As a Percentage of the Selected V OUT 83 92 % IVOUT Output Quiescent Current VOUT = 5.0V 125 250 nA IPEAK Buck Peak Switch Current 200 260 350 mA IBUCK Available Buck Output Current 100 mA RP Buck PMOS Switch On-Resistance 1.1 Ω RN Buck NMOS Switch On-Resistance 1.3 Ω Max Buck Duty Cycle l 100 % VIH(D0, D1) D0/D1 Input High Voltage l 1.2 V VIL(D0, D1) D0/D1 Input Low Voltage l 0.4 V IIH(D0, D1) D0/D1 Input High Current 10 nA IIL(D0, D1) D0/D1 Input Low Current 10 nA 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 L TC3588E-2 is tested under pulsed load conditions such that T J ≈ TA. The L TC3588E-2 is guaranteed to meet specifications from 0°C to 85°C junction temperature. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The L TC3588I-2 is guaranteed over the –40°C to 125°C operating junction temperature range. Note that the maximum ambient temperature consistent with these specifications is determined by specific operating conditions in conjunction with board layout, the rated package thermal impedance and other environmental factors. Note 3: The junction temperature (T J, in °C) is calculated from the ambient temperature (TA, in °C) and power dissipation (PD, in Watts) according to the formula: TJ = TA + (PD • θJA), where θJA (in °C/W) is the package thermal impedance. Note 4: Dynamic supply current is higher due to gate charge being delivered at the switching frequency.

3.45V Output vs Temperature Input IQ in UVLO vs VIN Input IQ in Sleep vs VIN UVLO Rising vs Temperature UVLO Falling vs Temperature VSHUNT vs Temperature Total Bridge Rectifier Drop vs Bridge Current BRIDGE CURRENT (A) VBRIDGE (mV)

35882 G06

1µ 10µ 10m1m100µ 85°C 25°C –40°C |VPZ1 – VPZ2| – VIN TEMPERATURE (°C) –55 BRIDGE LEAKAGE (nA) 80 35 125

35882 G07

170–10 VIN = 18V , LEAKAGE AT PZ1 OR PZ2 Bridge Leakage vs Temperature Bridge Frequency Response FREQUENCY (Hz) VIN (V)

35882 G08

2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 10 100 100M 10M 1M10k 1k 100k 4VP-P APPLIED TO PZ1/PZ2 INPUT MEASURED IN UVLO Typical perForMance characTerisTics VIN (V) INPUT IQ (nA) 1800 1600 1400 1000 600 1200 800 400 200 12 10 144

35882 G01

–40°C 85°C 25°C 125°C VIN (V) INPUT IQ (nA) 3600 3200 2400 2800 2000 1600 1200 800 1615 17

35882 G02

85°C 25°C 125°C –40°C TEMPERATURE (°C) –50 UVLO RISING (V) 16.4 16.0 16.2 15.8 15.6 25 1000 75

35882 G03

125–25 50 TEMPERATURE (°C) –50 UVLO FALLING (V) 14.4 14.0 14.2 13.8 13.6 25 1000 75

35882 G04

125–25 50 TEMPERATURE (°C) –50 VSHUNT (V) 21.2 20.4 20.6 20.8 21.0 20.0 20.2 19.2 19.0 19.4 19.8 19.6 18.8 25 1000 75

35882 G05

125–25 50 ISHUNT = 25mA ISHUNT = 1mA TEMPERATURE (°C) –50 VOUT (V) 3.55 3.35 3.40 3.45 3.50 3.25 3.30 3.15 3.20 3.10 25 1000 75

35882 G09

125–25 50 PGOOD FALLING WAKE-UP THRESHOLD SLEEP THRESHOLD

Typical perForMance characTerisTics 5.0V Output vs Temperature VOUT Load Regulation VOUT Line Regulation 4.1V Output vs Temperature 4.5V Output vs Temperature IVOUT vs Temperature IPEAK vs Temperature RDS(ON) of PMOS/NMOS vs Temperature TEMPERATURE (°C) –55 RDS(ON) (Ω) 2.0 1.6 1.0 1.4 1.8 1.2 0.8 25 105–15 65

35882 G17

1255 85–35 45 PMOS NMOS Operating Waveforms TEMPERATURE (°C) –50 VOUT (V) 4.20 3.80 3.90 4.00 4.10 3.70 25 1000 75

35882 G10

125–25 50 PGOOD FALLING WAKE-UP THRESHOLD SLEEP THRESHOLD TEMPERATURE (°C) –50 VOUT (V) 4.60 4.20 4.30 4.40 4.50 4.10 25 1000 75

35882 G11

125–25 50 PGOOD FALLING WAKE-UP THRESHOLD SLEEP THRESHOLD TEMPERATURE (°C) –50 VOUT (V) 5.10 5.00 4.60 4.70 4.80 4.90 4.50 25 1000 75

35882 G12

125–25 50 PGOOD FALLING WAKE-UP THRESHOLD SLEEP THRESHOLD LOAD CURRENT (A) VOUT (V)

35882 G13

4.20 4.05 4.10 4.15 4.00 1µ 10µ 10m 100m1m100µ VIN = 18V , COUT = 100µF , D1 = 0, D0 = 1 VIN (V) VOUT (V)

35882 G14

4.15 4.14 4.06 4.07 4.08 4.09 4.13 4.12 4.11 4.10 4.05 14 17 181615 COUT = 100µF , ILOAD = 60mA, D1 = 0, D0 = 1 TEMPERATURE (°C) –50 IVOUT (nA) 160 120 100 140 25 100–25 50

35882 G15

VOUT = 5.0V VOUT = 4.1V VOUT = 4.5V VOUT = 3.45V TEMPERATURE (°C) –50 IPEAK (mA) 300 280 250 240 230 210 270 290 220 260 200 25 100–25 50

35882 G16

2.5µs/DIV OUTPUT VOL TAGE 50mV/DIV AC-COUPLED INDUCTOR CURRENT 200mA/DIV VIN = 18V , VOUT = 5.0V ILOAD = 1mA L = 22µH, COUT = 47µF SWITCH VOL TAGE 10V/DIV 0mA

35882 G18

Typical perForMance characTerisTics Efficiency vs VIN for ILOAD = 100mA, L = 100µH Efficiency vs VIN for VOUT = 4.1V , L = 100µH Efficiency vs VIN for ILOAD = 100mA, L = 22µH Efficiency vs VIN for VOUT = 4.1V , L = 22µH Efficiency vs ILOAD, L = 100µH Efficiency vs ILOAD, L = 22µH LOAD CURRENT (A) EFFICIENCY (%)

35881 G19

1µ 10µ 10m 100m1m100µ VIN = 15V VOUT = 3.45V VOUT = 4.1V VOUT = 4.5V VOUT = 5.0V VIN (V) EFFICIENCY (%)

35882 G20

VOUT = 3.45V VOUT = 4.1V VOUT = 4.5V VOUT = 5.0V VIN (V) EFFICIENCY (%)

35882 G21

ILOAD = 30µA ILOAD = 10µA ILOAD = 50µA ILOAD = 100µA ILOAD = 100mA LOAD CURRENT (A) EFFICIENCY (%)

35882 G22

1µ 10µ 10m 100m1m100µ VIN = 15V VOUT = 3.45V VOUT = 4.1V VOUT = 4.5V VOUT = 5.0V VIN (V) EFFICIENCY (%)

35882 G23

VOUT = 3.45V VOUT = 4.1V VOUT = 4.5V VOUT = 5.0V VIN (V) EFFICIENCY (%)

35882 G24

ILOAD = 30µA ILOAD = 10µA ILOAD = 50µA ILOAD = 100µA ILOAD = 100mA

PZ1 (Pin 1): Input connection for piezoelectric element or other AC source (used in conjunction with PZ2). PZ2 (Pin 2): Input connection for piezoelectric element or other AC source (used in conjunction with PZ1). CAP (Pin 3): Internal rail referenced to VIN to serve as gate drive for buck PMOS switch. A 1µF capacitor should be connected between CAP and VIN. This pin is not intended for use as an external system rail. VIN (Pin 4): Rectified Input Voltage. A capacitor on this pin serves as an energy reservoir and input supply for the buck regulator . The VIN voltage is internally clamped to a maximum of 20V (typical). SW (Pin 5): Switch Pin for the Buck Switching Regulator . A 22µH or larger inductor should be connected from SW to V OUT. VOUT (Pin 6): Sense pin used to monitor the output volt- age and adjust it through internal feedback. VIN2 (Pin 7): Internal low voltage rail to serve as gate drive for buck NMOS switch. Also serves as a logic high rail for output voltage select bits D0 and D1. A 4.7µF capacitor should be connected from V IN2 to GND. This pin is not intended for use as an external system rail. D1 (Pin 8): Output Voltage Select Bit. D1 should be tied high to V IN2 or low to GND to select desired V OUT (see Table 1). D0 (Pin 9): Output Voltage Select Bit. D0 should be tied high to V IN2 or low to GND to select desired V OUT (see Table 1). PGOOD (Pin 10): Power good output is logic high when VOUT is above 92% of the target value. The logic high is referenced to the VOUT rail. GND (Exposed Pad Pin 11): Ground. The Exposed Pad should be connected to a continuous ground plane on the second layer of the printed circuit board by several vias directly under the L TC3588-2. block DiagraM 35882 BD D1, D0 PZ2 PZ1 VIN UVLO BUCK CONTROL INTERNAL RAIL GENERATION BANDGAP REFERENCE SLEEP PGOOD COMPARATOR CAP SW GND PGOOD VIN2 VOUT 20V 8, 9

synchronous buck regulator . (~10µA). The bridge is capable of carrying up to 50mA. transferred from the input capacitor to the output capacitor . energy must be harvested from low power sources. shows the ideal VIN, VIN2 and CAP relationship. Figure 1. Ideal VIN, VIN2 and CAP Relationship

35882 F01

the output voltage will be loaded by approximately 100nA. that monitors the output voltage with a sleep comparator . output when it is switching.

small amounts of ambient energy. four D0/D1 codes and their corresponding output voltages. Table 1. Output Voltage Selection allows output energy to be used even if the input is lost. drive higher current loads such as an LED.

35882 F02

Figure 2. PGOOD Operation During T ransition to UVLO Figure 3. PGOOD Operation During D0/D1 T ransition

35882 F03

transition low until the new regulation point is reached. will remain high through the transition. through a piezoelectric element in its primary application. manufacturers listed in Table 2. Table 2. Piezoelectric Element Manufacturers Figure 4. Typical Piezoelectric Load Lines

35882 F04

the buck efficiently transfers that energy to the output. smoothly to such a load step. to withstand the highest voltage ever present at V IN.

35882 F05a 35882 F05b

Figure 5. 5V Piezoelectric Energy Harvester Powering a Microprocessor

lists several inductors that work well with the L TC3588-2. Table 3. Recommended Inductors for L TC3588-2

Figure 7. AC Line Powered 4.1V Li-Ion Battery Charger

35882 F07

Figure 8. Electric Field Energy Harvester

35882 F08

Figure 6. Dual Rail Power Supply with Single Piezo

35882 F06

harvest energy from the electric field around the light.

Figure 9. Current Fed 3.45V LiFePO4 Battery Charger

35882 F09

source that also have limited current available at the input.

10-Lead Plastic DFN (3mm × 3mm) (Reference L TC DWG # 05-08-1699 Rev C) package DescripTion 3.00 ±0.10 (4 SIDES) NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-2). CHECK THE LTC WEBSITE DATA SHEET FOR CURRENT STATUS OF VARIATION ASSIGNMENT 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 0.40 ± 0.10 BOTTOM VIEW—EXPOSED PAD 1.65 ± 0.10 (2 SIDES) 0.75 ±0.05 R = 0.125 TYP 2.38 ±0.10 (2 SIDES) 106 PIN 1 TOP MARK (SEE NOTE 6)

0.200 REF

0.00 – 0.05 (DD) DFN REV C 0310 0.25 ± 0.05 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 1.65 ±0.05 (2 SIDES)2.15 ±0.05 0.50 BSC 0.70 ±0.05 3.55 ±0.05 PACKAGE OUTLINE 0.25 ± 0.05

0.50 BSC

R = 0.20 OR 0.35 × 45° CHAMFER

MSOP (MSE) 0910 REV G 0.53 ± 0.152 (.021 ± .006) SEATING PLANE 0.18 (.007) 1.10 (.043) MAX 0.17 – 0.27 (.007 – .011) TYP 0.86 (.034) REF 0.50 (.0197) BSC 1 2 3 4 5 4.90 ± 0.152 (.193 ± .006) 0.497 ± 0.076 (.0196 ± .003) REF8 9 10 7 6 3.00 ± 0.102 (.118 ± .004) (NOTE 3) 3.00 ± 0.102 (.118 ± .004) (NOTE 4) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 6. EXPOSED PAD DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH ON E-PAD SHALL NOT EXCEED 0.254mm (.010") PER SIDE. 0.254 (.010) 0° – 6° TYP DETAIL “A” DETAIL “A” GAUGE PLANE 5.23 (.206) MIN 3.20 – 3.45 (.126 – .136) 0.889 ± 0.127 (.035 ± .005) RECOMMENDED SOLDER PAD LAYOUT 1.68 ± 0.102 (.066 ± .004) 1.88 ± 0.102 (.074 ± .004) 0.50 (.0197) BSC 0.305 ± 0.038 (.0120 ± .0015) TYP BOTTOM VIEW OF EXPOSED PAD OPTION 1.68 (.066) 1.88 (.074) 0.1016 ± 0.0508 (.004 ± .002) DETAIL “B” DETAIL “B” CORNER TAIL IS PART OF THE LEADFRAME FEATURE. FOR REFERENCE ONL Y NO MEASUREMENT PURPOSE

0.05 REF

0.29 REF 10-Lead Plastic MSOP , Exposed Die Pad (Reference L TC DWG # 05-08-1664 Rev G)

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.

revision hisTory

REV DATE DESCRIPTION PAGE NUMBER A 5/11 Add brackets to Absolute Maximum Ratings for V OUT and PGOOD. Replace MS package description to the correct MSE package description. Add to Related Parts section and order parts by part number .

Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear .com  LINEAR TECHNOLOGY CORPORATION 2010 LT 0511 REV A • PRINTED IN USA relaTeD parTs Typical applicaTion PART NUMBER DESCRIPTION COMMENTS L T1389 Nanopower Precision Shunt Voltage Reference 800nA Operating Current, 1.25V/2.5V/4.096V L TC1540 Nanopower Comparator with Reference 0.3µA IQ, Drives 0.01µF , Adjustable Hysteresis, 2V to 11V Input Range L T3009 3µA I Q, 20mA Low Dropout Linear Regulator Low 3µA IQ, 1.6V to 20V Range, 20mA Output Current L TC3105 400mA Step-Up Converter with 250mV Start-Up and Maximum Power Point Control High Efficiency Step-Up DC/DC Converter , VIN: 0.225V to 5V , Integrated Maximum Power Point Controller (MPPT), Photovoltaic Cells, Thermoelectric Generators (TEGs), and Fuel Cells, Burst Mode Operation L TC3108/ L TC3108-1 Ultralow Voltage Step-Up Converter and Power Manager V DFN-12, SSOP-16 Packages, L TC3108-1 VOUT = 2.2V , 2.5V , 3V , 3.7V , 4.5V L TC3109 Auto-Polarity, Ultralow Voltage Step-Up Converter and Power Manager 4mm × 4mm QFN-20, SSOP-20 Packages L TC3388-1/ L TC3388-3 20V High Efficiency Nanopower Step-Down Regulator 860nA I Q in Sleep, 2.7V to 20V Input, VOUT: 1.2V to 5V , Enable and Standby Pins L TC3588-1 Piezoelectric Energy Harvesting Power Supply 950nA IQ in Sleep, VOUT: 1.8V , 2.5V , 3.3V , 3.6V , Integrated Bridge Rectifier L TC3631 45V , 100mA, Synchronous Step-Down Regulator with 12µA I Q 4.5V to 45V Operating Range, Overvoltage Lockout Up to 60V L TC3642 45V , 50mA, Synchronous Step-Down Regulator with 12µA I Q 4.5V to 45V Operating Range, Overvoltage Lockout Up to 60V L TC3652 Power T racking 2A Battery Charger for Solar Power MPPT for Solar Applications, VIN: 4.95V to 32V , Charge Rate Up to 2A, User Selectable Termination: C/10 or On-Board Timer , Resister Programmable Float Voltage up to 14.4V , 3mm × 3mm DFN12 or MSOP-12 L T3970 40V , 350mA Step-Down Regulator with 2.5µA I Q Integrated Boost and Catch Diodes, 4.2V to 40V Operating Range L T3971 38V , 1.2A, 2MHz Step-Down Regulator with 2.8µA I Q 4.3V to 38V Operating Range, Low Ripple Burst Mode Operation L T3991 55V , 1.2A 2MHz Step-Down Regulator with 2.8µA I Q 4.3V to 55V Operating Range, Low Ripple Burst Mode Operation L TC4070 Li-Ion/Polymer Shunt Battery Charger System 450nA IQ, 1% Float Voltage Accuracy, 50mA Shunt Current 4V/4.1V/4.2V L TC4071 Li-Ion/Polymer Shunt Battery Charger System with Low Battery Disconnect 550nA IQ, 1% Float Voltage Accuracy, <10nA Low Battery Disconnect, 4V/4.1V/4.2V , 8-Lead 2mm × 3mm DFN and MSOP Packages Piezoelectric Shunt Charger for Small Li-Ion Cells or Thin Film Batteries

35882 TA02

V IN2 PZ2 SW V OUT PGOOD L TC3588-2 L TC4070 GND ADVANCED CERAMETRICS PFCB-W14 1µF 6.3V 4.7µF 6.3V 22µF 25V C OUT 47µF 6.3V 22µH 8.87k 10k VOUT 5.0V NTCBIAS NTC ADJ LBO GND VCC DMP2104LP 4.7M NC7SVL04 * NTHS0805E3103L T LOCATE NEAR BATTERY 100µA CONTINUOUS 20mA PULSED INFINITE POWER SOLUTIONS MEC101-10SES 4.1V 1mAh Li-ION