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Solutions Search - Supercapacitor Charging

LTC4079 Supercap Charger with C/10 Termination

Oct 2nd 2014
The LTC®4079 is a low quiescent current, high voltage linear charger for most battery chemistry types including Li-Ion/Polymer, Lead-Acid or NiMH battery stacks up to 60V. The maximum charge current is adjustable from 10mA to 250mA with an external resistor. The battery charge voltage is set using an external resistor ...

Circuit 

 

LTM8052 36VIN, LTM8052 Charges Two 2.5V Series Supercapacitors at 5.6A

Sep 23rd 2014
The LTM®8052/LTM8052A is a 36VIN, 5A, 2-quadrant constant-voltage, constant-current (CVCC) step-down μModule® regulator. Included in the package are the switching controller, power switches, inductor and support components. Operating over an input voltage range of 6V to 36V, the LTM8052/LTM8052A supports an output ...

Circuit 

 

LTM8052 Stack Two LTM8052s to Charge and Actively Balance Supercapacitors (or Batteries)

Sep 23rd 2014
The LTM®8052/LTM8052A is a 36VIN, 5A, 2-quadrant constant-voltage, constant-current (CVCC) step-down μModule® regulator. Included in the package are the switching controller, power switches, inductor and support components. Operating over an input voltage range of 6V to 36V, the LTM8052/LTM8052A supports an output ...

Circuit 

 

LTC3350 25V to 35V, 6.4A Supercapacitor Charger with 2A Input Current Limit and 28V, 50W Backup Mode

Aug 8th 2014
The LTC®3350 is a backup power controller that can charge and monitor a series stack of one to four supercapacitors. The LTC3350’s synchronous step-down controller drives N‑channel MOSFETs for constant current/constant voltage charging with programmable input current limit. In addition, the step-down converter ...

Circuit 

 

LTC3350 11V to 20V, 5.3A LiFePO4 Battery Charger with 4.6A Input Current Limit and 12V, 48W Backup Mode

Aug 8th 2014
The LTC®3350 is a backup power controller that can charge and monitor a series stack of one to four supercapacitors. The LTC3350’s synchronous step-down controller drives N‑channel MOSFETs for constant current/constant voltage charging with programmable input current limit. In addition, the step-down converter ...

Circuit 

 

LTC3350 11V to 20V, 16A Supercapacitor Charger with 6.4A Input Current Limit and 10V, 60W Backup Mode

Aug 8th 2014
The LTC®3350 is a backup power controller that can charge and monitor a series stack of one to four supercapacitors. The LTC3350’s synchronous step-down controller drives N‑channel MOSFETs for constant current/constant voltage charging with programmable input current limit. In addition, the step-down converter ...

Circuit 

 

LTC3350 11V to 20V, 4A Supercapacitor Charger with 2A Input Current Limit and 5V, 2A Backup Mode

Aug 8th 2014
The LTC®3350 is a backup power controller that can charge and monitor a series stack of one to four supercapacitors. The LTC3350’s synchronous step-down controller drives N‑channel MOSFETs for constant current/constant voltage charging with programmable input current limit. In addition, the step-down converter ...

Circuit 

 

LTC3350 11V to 35V, 4A Supercapacitor Charger with 2A Input Current Limit and 10V, 1A Backup Mode

Aug 8th 2014
The LTC®3350 is a backup power controller that can charge and monitor a series stack of one to four supercapacitors. The LTC3350’s synchronous step-down controller drives N‑channel MOSFETs for constant current/constant voltage charging with programmable input current limit. In addition, the step-down converter ...

Circuit 

 

LTC3350 11V to 15V, 2.3A Zeta-SEPIC High Voltage Capacitor Charger with 2A Input Current Limit and 10V, 25W Backup Mode

Aug 8th 2014
The LTC®3350 is a backup power controller that can charge and monitor a series stack of one to four supercapacitors. The LTC3350’s synchronous step-down controller drives N‑channel MOSFETs for constant current/constant voltage charging with programmable input current limit. In addition, the step-down converter ...

Circuit 

 

LTC3350 4.8V to 12V, 10A Supercapacitor Charger with 6.4A Input Current Limit and 5V, 30W Backup Mode

Aug 8th 2014
The LTC®3350 is a backup power controller that can charge and monitor a series stack of one to four supercapacitors. The LTC3350’s synchronous step-down controller drives N‑channel MOSFETs for constant current/constant voltage charging with programmable input current limit. In addition, the step-down converter ...

Circuit 

 

LTC3350 12V PCle Backup Controller

Aug 8th 2014
The LTC®3350 is a backup power controller that can charge and monitor a series stack of one to four supercapacitors. The LTC3350’s synchronous step-down controller drives N‑channel MOSFETs for constant current/constant voltage charging with programmable input current limit. In addition, the step-down converter ...

Circuit 

 

LTC3225 5V Supercapacitor Back-Up Supply

Aug 7th 2014
The LTC3225/LTC3225-1 are programmable supercapacitor chargers designed to charge two supercapacitors in series to a selectable fixed output voltage (4.8V/5.3V for the LTC3225 and 4V/4.5V for the LTC3225-1) from input supplies as low as 2.8V to 5.5V. Automatic cell balancing prevents overvoltage damage to either supercapacitor. ...

Circuit 

 

LTC3124 Dual Supercapacitor Backup Power Supply, 0.5V to 5.4V

Jul 8th 2014
The LTC®3124 is a dual-phase, synchronous step-up DC/ DC converter with true output disconnect and inrush current limiting capable of providing output voltages up to 15V. Dual-phase operation significantly reduces peak inductor and capacitor ripple currents, minimizing inductor and capacitor size. The 2.5A per phase current ...

Circuit 

 

LTC3355 NiMH Trickle Charger and Ride-Through Backup Supply

Mar 7th 2014
The LTC®3355 is a complete input power interrupt ridethrough DC/DC system. The part charges a supercapacitor while delivering load current to VOUT, and uses energy from the supercapacitor to provide continuous VOUT backup power when VIN power is lost. The LTC3355 contains a nonsynchronous constant frequency current mode ...

Circuit 

 

LTC3355 Tantalum Capacitor Charger and Ride-Through Backup Supply

Mar 7th 2014
The LTC®3355 is a complete input power interrupt ridethrough DC/DC system. The part charges a supercapacitor while delivering load current to VOUT, and uses energy from the supercapacitor to provide continuous VOUT backup power when VIN power is lost. The LTC3355 contains a nonsynchronous constant frequency current mode ...

Circuit 

 

LTC3355 Supercapacitor Charger and Ride-Through Power Supply

Mar 7th 2014
The LTC®3355 is a complete input power interrupt ridethrough DC/DC system. The part charges a supercapacitor while delivering load current to VOUT, and uses energy from the supercapacitor to provide continuous VOUT backup power when VIN power is lost. The LTC3355 contains a nonsynchronous constant frequency current mode ...

Circuit 

 

LTC3128 Wide VIN (3A Programmed Input Current) to 4.2V

Feb 13th 2014
The LTC®3128 is a highly efficient, buck-boost DC/DC supercapacitor charger. It operates efficiently from input voltages above, below or equal to the output voltage. The LTC3128 incorporates accurate programmable average input current limit, active charge balancing and programmable maximum capacitor voltage. This combination ...

Circuit 

 

LTC3128 Single Output Capacitor Application (1.5A Programmed Input Current)

Feb 13th 2014
The LTC®3128 is a highly efficient, buck-boost DC/DC supercapacitor charger. It operates efficiently from input voltages above, below or equal to the output voltage. The LTC3128 incorporates accurate programmable average input current limit, active charge balancing and programmable maximum capacitor voltage. This combination ...

Circuit 

 

LTC3128 USB 3.0 (900mA Programmed Input Current) Powered, 4.8V Backup Supply

Feb 13th 2014
The LTC®3128 is a highly efficient, buck-boost DC/DC supercapacitor charger. It operates efficiently from input voltages above, below or equal to the output voltage. The LTC3128 incorporates accurate programmable average input current limit, active charge balancing and programmable maximum capacitor voltage. This combination ...

Circuit 

 

LTC3128 Supercapacitor Backup with Secondary Converters (3A Programmed Input Current)

Feb 13th 2014
The LTC®3128 is a highly efficient, buck-boost DC/DC supercapacitor charger. It operates efficiently from input voltages above, below or equal to the output voltage. The LTC3128 incorporates accurate programmable average input current limit, active charge balancing and programmable maximum capacitor voltage. This combination ...

Circuit 

 

LT8710 300kHz, SuperCap Backup Power

Jan 15th 2014
The LT8710 is a synchronous PWM DC/DC controller with a rail-to-rail output current monitor and control. The LT8710 is ideal for many types of power supply topologies and can be easily configured for boost, SEPIC, inverting, or flyback configurations. The LT8710’s rail-to-rail output current monitor and control allows ...

Circuit 

 

LTC3637 4V to 76V Input to 1.8V SuperCap Charger

Dec 20th 2013
The LTC®3637 is a high efficiency step-down DC/DC regulator with an internal high side power switch that draws only 12μA DC supply current while maintaining a regulated output voltage at no load. ...

Circuit 

 

LTC3111 3.3V Backup from a High Voltage Capacitor Bank Runs Down to VIN = 2V with 500mA Load

Dec 9th 2013
The LTC3111 is a fixed frequency, synchronous buckboost DC/DC converter with an extended input and output range. The unique 4-switch, single inductor architecture provides low noise and seamless operation from input voltages above, below or equal to the output voltage. With an input and output range of 2.5V to 15V, the LTC3111 ...

Circuit 

 

LT8705 Bi-Directional Buck-Boost Supercapacitor Backup Supply

Jan 7th 2013
The LT8705 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The part has integrated input current, input voltage, output current and output voltage feedback loops. With a wide 2.8V to 80V input and 1.3V to 80V output range, the LT8705 ...

Circuit 

 

Dual Supercapacitor Backup Power Supply, 0.5V to 5V

Jul 30th 2012
The LTC3122 is a synchronous step-up DC/DC converter with true output disconnect and inrush current limiting. The 2.5A current limit along with the ability to program output voltages up to 15V makes the LTC3122 well suited for a variety of demanding applications. Once started, operation will continue with inputs down to 500mV, ...

Circuit 

 

LT3796 28VIN to 28V SuperCap Charger with Input Current Limit and Charge Done Flag

Apr 3rd 2012
The LT®3796/LT3796-1 are DC/DC controllers designed to regulate a constant-current or constant-voltage and are ideal for driving LEDs. The fixed frequency and current mode architecture result in stable operation over a wide range of supply and output voltages. Two ground referred voltage FB pins serve as the input for ...

Circuit 

 

36VIN, 5.6A Two 2.5V Series Supercapacitor Charger

Jan 16th 2012
The LTM8026 is a 36VIN, 5A constant-voltage, constant current (CVCC) step-down μModule regulator. Included in the package are the switching controller, power switches, inductor and support components. Operating over an input voltage range of 6V to 36V, the LTM8026 supports an output voltage range of 1.2V to 24V. CVCC operation ...

Circuit 

 

SuperCap Backup Power

Jan 12th 2012
The LT8582 is a dual independent channel PWM DC/DC converter with a power good pin and built-in fault protection to help guard against input overvoltage and overtemperature conditions. Each channel consists of a 42V master switch and a 42V slave switch that can be tied together for a total current limit of 3A. ...

Circuit 

 

Supercapacitor Based Backup Power Supply

Jul 26th 2011
In this application, two series of supercapacitors are charged to 5V during normal operation to provide the needed backup energy in case the primary power fails. As long as the primary power is present, the LTC3536 remains in Burst Mode operation with very low quiescent current, minimizing drain on the backup storage capacitor. ...

Circuit 

 

28V Input to 0V to 28V Output SEPIC SuperCap Charger with Input Current Limit

May 18th 2010
In this circuit, a supercapacitor is charged from it's fully uncharged state up to a full charge voltage of 28V. This wide output voltage range is accomplished using a SEPIC topology. The built in input current limit of the LT3956 simplifies the design. The LT3956 is a DC/DC converter designed to operate as a constant-current ...

Circuit 

 

Power Backup Using Supercapacitors and Optional Keep-Alive Cell

Apr 1st 2010
The LTC4415 contains two monolithic PowerPath ideal diodes, each capable of supplying up to 4A with typical forward conduction resistance of 50mΩ. The diode voltage drops are regulated to 15mV during forward conduction at low currents, extending the power supply operating range and ensuring no oscillations during supply switchover. ...

Circuit 

 

LT3741 20A Super Capacitor Charger with 5V Regulated Output from 10V to 36V Input

Mar 9th 2010
The LT3741 is a fixed frequency synchronous step-down DC/DC controller designed to accurately regulate the output current at up to 20A. The average current-mode controller will maintain inductor current regulation over a wide output voltage range of 0V to (VIN – 2V). The regulated current is set by an analog voltage ...

Circuit 

 

Redundant USB & 3xAA High Peak Power Battery Supplies using Two Supercapacitors

Mar 3rd 2010
The LTC4425 is a constant-current/constant-voltage linear charger designed to charge a 2-cell supercap stack from either a Li-Ion/Polymer battery, a USB port, or a 2.7V to 5.5V current-limited supply. The part operates as an ideal diode with an extremely low 50mΩ on-resistance making it suitable for high peak-power/low average ...

Circuit 

 

3 x AA Alkaline to High Peak Power 3.3V at 2A Using Two Supercapacitors

Mar 3rd 2010
The LTC4425 is a constant-current/constant-voltage linear charger designed to charge a 2-cell supercap stack from either a Li-Ion/Polymer battery, a USB port, or a 2.7V to 5.5V current-limited supply. The part operates as an ideal diode with an extremely low 50mΩ on-resistance making it suitable for high peak-power/low average ...

Circuit 

 

USB to High Peak Power 3.3V Supply Using Two Supercapacitors

Mar 3rd 2010
The LTC4425 is a constant-current/constant-voltage linear charger designed to charge a 2-cell supercap stack from either a Li-Ion/Polymer battery, a USB port, or a 2.7V to 5.5V current-limited supply. The part operates as an ideal diode with an extremely low 50mΩ on-resistance making it suitable for high peak-power/low average ...

Circuit 

 

Li-Ion High Peak Power Battery Buffer Using Two Supercapacitors

Mar 3rd 2010
The LTC4425 is a constant-current/constant-voltage linear charger designed to charge a 2-cell supercap stack from either a Li-Ion/Polymer battery, a USB port, or a 2.7V to 5.5V current-limited supply. The part operates as an ideal diode with an extremely low 50mΩ on-resistance making it suitable for high peak-power/low average ...

Circuit 

 

Stacked Supercapacitor Charger from 1.8V to 5.5V Input to 5V Output (1000mA Max Input Current)

Feb 2nd 2010
The LTC3127 is a wide VIN range, highly efficient, 1.35MHz fixed frequency buck-boost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The LTC3127 features programmable average input current limit, making it ideal for power-limited input sources. The input current limit is programmed ...

Circuit 

 

Single Supercapacitor Charger from 1.8V to 5.5V Input to 5V Output (1000mA Max Input Current)

Feb 2nd 2010
The LTC3127 is a wide VIN range, highly efficient, 1.35MHz fixed frequency buck-boost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The LTC3127 features programmable average input current limit, making it ideal for power-limited input sources. The input current limit is programmed ...

Circuit 

 

USB-GSM application with 5V USB input (500mA max or disable) charging 4.4mF super cap without Burst Mode

Oct 13th 2009
The LTC3606B is a 800mA monolithic synchronous buck regulator with an input supply voltage range is 2.5V to 5.5V, making it ideal for Li-Ion and USB powered applications ...

Circuit 

 

USB-GSM application with 5V USB input (500mA max) charging a 4.4mF super cap (3.4V at 800mA) and providing 1.8V at 400mA

Sep 22nd 2009
The LTC3619 is a Dual 400mA/800mA monolithic synchronous buck regulator with an input supply voltage range is 2.5V to 5.5V, making it ideal for Li-Ion and USB powered applications ...

Circuit 

 

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