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Solutions Search - Bipolar DC-DC Split Supplies

DC765B - LT3479EDE Demo Board | Positive/ Negative Converter (LT3479 x2), Boost: 2.5V ≤ VIN ≤ 4.2V, Vout=7V@600mA, Inverter: 2.5V ≤ VIN ≤ 12V, Vout=-5V@600mA

Feb 9th 2017
Demonstration circuit 765B is a general purpose 1MHz, positive and negative converters featuring the LT3479EDE. The demo circuit demonstrates small size and low component count in a boost circuit and an inverting circuit. The boost converter is set up to convert a 2.5V to 4.2V input to 7V output at 600mA. The inverting circuit ...

Demo Board 

 

DC2244A - LTM8049 Demo Board | Dual SEPIC/Inverting μModule, 2.8V ≤ VIN ≤ 18V, Vout1/2 = ±12V@1A

Sep 27th 2016
Demonstration circuit 2244A features the LTM®8049, a dual SEPIC or inverting μModule® regulator. The demo circuit is configured as two stand-alone SEPIC and Inverting DC/DC converters with +12V and –12V output voltages from an input voltage up to 20V. The switching frequencies of both channels are set at 1MHz ...

Demo Board LTspice 

 

LT3090 5V to +/-2.5V Low Noise Power Supply

Sep 15th 2016
The LT®3090 is a 600mA, low dropout negative linear regulator that is easily parallelable to increase output current or spread heat on surface mounted boards. Designed with a precision current reference followed by a high performance rail-to-rail voltage buffer, this regulator finds use in applications requiring precision ...

Circuit 

 

LT8335 4V to 16V Input, ±5V Converter

Jun 27th 2016
The LT®8335 is a current mode DC/DC converter capable of generating either positive or negative output voltages using a single feedback pin. It can be configured as a boost, SEPIC or inverting converter consuming as low as 6μA of quiescent current. Low ripple Burst Mode operation maintains high efficiency down to very ...

Circuit 

 

LTC7149 24V Input Concurrent ±12V Supply

Feb 16th 2016
The LTC®7149 is a high efficiency 60V, 4A synchronous monolithic step-down regulator for inverting output applications. The regulator features a single resistorprogrammable output voltage and high efficiency over a wide VOUT range. ...

Circuit 

 

LTC3863 4.5V to 55V Input, ±5V, 1.8A at 320kHz

Feb 2nd 2016
The LTC®3863 is a robust, inverting DC/DC PMOS controller optimized for automotive and industrial applications. It drives a P-channel power MOSFET to generate a negative output and requires just a single inductor to complete the circuit. Output voltages from –0.4V to –150V are typically achievable with higher ...

Circuit 

 

LT3463 Dual Output ±20V Converter

Feb 1st 2016
The LT3463/LT3463A are dual micropower DC/DC converters with internal Schottky diodes in a 10-lead 3mm x 3mm DFN package. Negative and positive LT3463 converters have a 250mA current limit. The LT3463A positive converter also has a 250mA limit, while the negative converter has a 400mA limit. Both devices have an input voltage ...

Circuit 

 

LT1617 ±20V Dual Output Converter with Load Disconnect

Feb 1st 2016
The LT®1617/LT1617-1 are micropower inverting DC/DC converters in a 5-lead SOT-23 package. The LT1617 is designed for higher power systems with a 350mA current limit and an input voltage range of 1.2V to 15V, whereas the LT1617-1 is intended for lower power and single-cell applications with a 100mA ...

Circuit 

 

DC2235A - LTC3265 Demo Board | Dual Supply Boost/Inverting Charge Pumps with Post-Regulator LDOs, 4.5V ≤ VIN ≤ 16V, Vout = ±5V/±15V/±24V @ 50mA

Oct 5th 2015
Demonstration Circuit 2235A has boost and inverting charge pumps each with a low noise LDO post regulator featuring the LTC®3265EDHC. The LTC3265 operates with an input voltage from 4.5V to 16V for the boost charge pump and from 4.5V to 32V for the inverting charge pump. The demo board provides selectable LDO± output ...

Demo Board 

 

LTC3265 Low Noise ±15V Outputs from a Single 12V Input

Aug 27th 2015
The LTC®3265 is a low noise dual polarity output power supply including a boost charge pump, an inverting charge pump and two low noise positive and negative LDO post regulators. The boost charge pump powers the positive LDO post regulator while the inverting charge pump powers the negative LDO regulator. Each LDO can provide ...

Circuit 

 

LTC3265 Low Power ±20V Power Supply from a Single-Ended 15V Input Supply

Aug 27th 2015
The LTC®3265 is a low noise dual polarity output power supply including a boost charge pump, an inverting charge pump and two low noise positive and negative LDO post regulators. The boost charge pump powers the positive LDO post regulator while the inverting charge pump powers the negative LDO regulator. Each LDO can provide ...

Circuit 

 

LTC3265 Low Noise +7V/–2V Power Supply from a Single-Ended 5V Input Supply (Frequency = 200kHz)

Aug 27th 2015
The LTC®3265 is a low noise dual polarity output power supply including a boost charge pump, an inverting charge pump and two low noise positive and negative LDO post regulators. The boost charge pump powers the positive LDO post regulator while the inverting charge pump powers the negative LDO regulator. Each LDO can provide ...

Circuit 

 

LTC3121 5V to Dual Output Synchronous Boost Converter, ±15V @ 140mA

Aug 27th 2015
The LTC®3121 is a synchronous step-up DC/DC converter with true output disconnect and inrush current limiting. The 1.5A current limit along with the ability to program output voltages up to 15V makes the LTC3121 well suited for a variety of demanding applications. Once started, operation will continue with inputs down to ...

Circuit 

 

LT8330 8V to 40V Input, ±15V Converter

Jul 8th 2015
The LT®8330 is a current mode DC/DC converter capable of generating either positive or negative output voltages using a single feedback pin. It can be configured as a boost, SEPIC or inverting converter consuming as low as 6μA of quiescent current. Low ripple Burst Mode operation maintains high efficiency down to very ...

Circuit 

 

LT8570 1.2MHz Charge Pump Creates ±12V From a Single Lithium Ion Battery

Feb 2nd 2015
The LT®8570 and LT8570-1 are PWM DC/DC converters. The LT8570 contains a 0.5A, 65V power switch, while the LT8570-1 contains a 0.25A, 65V power switch. The LT8570 and LT8570-1 can be configured as either a boost, SEPIC or inverting converter. ...

Circuit 

 

LT3471 OLED Driver

Sep 11th 2014
The LT3471 dual switching regulator combines two 42V, 1.3A switches with error amplifiers that can sense to ground providing boost and inverting capability. The low VCESAT bipolar switches enable the device to deliver high current outputs in a small footprint. The LT3471 switches at 1.2MHz, allowing the use of tiny, low cost ...

Circuit LTspice 

 

LT8471 Tracking ±12V Supplies from 6V to 36V Input at 800kHz

Feb 3rd 2014
The LT8471 is a dual PWM DC/DC converter containing two internal 2A, 50V switches and an additional 500mA switch to facilitate step-down and inverting conversion. Each 2A channel can be independently configured as a buck, boost, SEPIC, flyback or inverting converter. Capable of generating positive and negative outputs from a ...

Circuit 

 

LT8471 500kHz ZETA and 2L Inverting Converters Generates ±5V Outputs with Low Output Ripple

Feb 3rd 2014
The LT®8471 is a dual PWM DC/DC converter containing two internal 2A, 50V switches and an additional 500mA switch to facilitate step-down and inverting conversion. Each 2A channel can be independently configured as a buck, boost, SEPIC, flyback or inverting converter. Capable of generating positive and negative outputs from ...

Circuit 

 

LT8471 6V to 32V to ±5V, Dual DC/DC Converter

Feb 3rd 2014
The LT8471 is a dual PWM DC/DC converter containing two internal 2A, 50V switches and an additional 500mA switch to facilitate step-down and inverting conversion. Each 2A channel can be independently configured as a buck, boost, SEPIC, flyback or inverting converter. Capable of generating positive and negative outputs from a ...

Circuit 

 

LT8302 8V to 36VIN/±12VOUT Isolated Flyback Converter

Nov 1st 2013
The LT®8302 is a monolithic micropower isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with two external resistors and a third optional temperature compensation ...

Circuit 

 

Dual LTM8045 to Generate ±5Vout From 2.8V to 18Vin

Jan 23rd 2013
The LTM®8045 is a μModule® (micromodule) DC/DC converter that can be configured as a SEPIC or inverting converter by simply grounding the appropriate output rail. In a SEPIC configuration the regulated output voltage can be above, below or equal to the input voltage. The LTM8045 includes power devices, inductors, ...

Circuit 

 

LTC3260: Low Noise ±5V Power Supply from a Single 12V Input

Apr 16th 2012
Dual-polarity supplies are commonly needed to operate electronics such as op amps, drivers, or sensors, but there is rarely a dual-polarity supply available at the point of load. The LTC®3260 is an inverting charge pump (inductorless) DC/DC converter with dual low noise LDO regulators that can produce positive and negative ...

Circuit LTspice 

 

LTC3260 28V Dual Tracking Bipolar Supply with Outputs from ±5V to ±25V

Apr 16th 2012
The LTC3260 is a low noise dual polarity output power supply that includes an inverting charge pump with both positive and negative LDO regulators. The charge pump operates over a wide 4.5V to 32V input range and can deliver up to 100mA of output current. Each LDO regulator can provide up to 50mA of output current. The negative ...

Circuit 

 

LTC3260 Low Noise ±12V Power Supply from a Single-Ended 15V Input Supply

Apr 16th 2012
The LTC3260 is a low noise dual polarity output power supply that includes an inverting charge pump with both positive and negative LDO regulators. The charge pump operates over a wide 4.5V to 32V input range and can deliver up to 100mA of output current. Each LDO regulator can provide up to 50mA of output current. The negative ...

Circuit LTspice 

 

LT8582 5V to ±12V@550mA Split Supply at 1.5MHz

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 LTspice 

 

Two LTM8047 Flyback Converters to Generate ±5Vout From 3.5V to 31Vin

Nov 4th 2011
The LTM8047 is an isolated flyback μModule DC/DC converter. The LTM8047 has an isolation rating of 725VDC. Included in the package are the switching controller, power switches, transformer, and all support components. Operating over an input voltage range of 3.1V to 32V, the LTM8047 supports an output voltage range of 2.5V ...

Circuit 

 

LT3512 48Vin to ±15Vout @ 100mA Monolithic Isolated Flyback Converter (No Opto or Third Winding)

Feb 14th 2011
The LT3512 is a high voltage monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation as the part senses output voltage directly from the primary-side flyback waveform. The device integrates a 420mA, 150V power switch, high voltage circuitry, ...

Circuit 

 

LT3511 48Vin to ±15Vout @ 50mA Monolithic Isolated Flyback Converter (No Opto or Third Winding)

Nov 9th 2010
The LT3511 is a high voltage monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation as the part senses output voltage directly from the primary-side flyback waveform. The device integrates a 240mA, 150V power switch, high voltage circuitry, ...

Circuit 

 

LTC3388 6-12Vin to ±5V@50mA Split Supply

Jul 20th 2010
An easy-to-implement split-voltage power supply using the LTC3388 yields a low quiescent current, high efficiency solution for powering low current analog circuits that need a virtual ground output. The output voltage of each device is digitally programmable to four output voltages from 1.2V to 5.0V and will support a load current ...

Circuit 

 

LT3575 13V-30Vin to ±5V@500mA Monolithic Isolated Flyback Converter (No Opto or Third Winding)

Jul 15th 2010
The LT3575 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary side flyback waveform. A 2.5A, 60V NPN power switch is integrated along with all control logic ...

Circuit 

 

LT3579 1MHz, 5V to ±12V Converter

Apr 28th 2010
The LT®3579 is a PWM DC/DC converter with built-in fault protection features to aid in protecting against output shorts, input/output overvoltage, and overtemperature conditions. The part consists of a 42V master switch, and a 42V slave switch that can be tied together for a total current limit of 6A. ...

Circuit 

 

DC1622A - LT3032IDE Demo Board | Dual Positive/Negative, Low Noise, Low Dropout Linear Regulator, ±2.3V ≤ VIN ≤ ±20V, Vout = ±1.2/±3.3/±5/±12/±15V @ ±150mA

Mar 1st 2010
Demonstration circuit 1622A is a dual 150mA linear regulator featuring the LT®3032. The LT3032 is a dual, positive and negative low dropout linear regulator. Each regulator supplies up to 150mA of output current with a typical 300mV dropout voltage. Each regulator’s quiescent current is low (<3μA total in shutdown) ...

Demo Board LTspice 

 

LT3032 ±5V to ±15V Tracking Supply

Feb 12th 2010
The LT3032 is a dual, low noise, positive and negative low dropout voltage linear regulator. Each regulator delivers up to 150mA with a typical 300mV dropout voltage. Each regulator’s quiescent current is low (30μA operating and <3μA in shutdown) and well-controlled in dropout, making it an excellent choice for ...

Circuit 

 

LT3574 5Vin to±12Vout @ 40mA Monolithic Isolated Flyback Converter (No Opto or Third Winding)

Jan 26th 2010
The LT3574 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary side flyback waveform. A 0.65A, 60V NPN power switch is integrated along with all control ...

Circuit 

 

LT3757 5V to 12V Input, ±12V/0.4A Output SEPIC Converter

May 6th 2009
The LT®3757/LT3757A are wide input range, current mode, DC/DC controllers which are capable of generating either positive or negative output voltages. They can be configured as either a boost, flyback, SEPIC or inverting converter. The LT3757/LT3757A drive a low side external N-channel power MOSFET from an internal regulated ...

Circuit LTspice 

 

LT3582 5V to ±12V@80mA Split Supply

May 4th 2009
The LT3582 series includes two monolithic converters, one Boost and one Inverting. The Boost converter has an integrated power switch and output disconnect switch. The Inverting converter uses a single inductor topology and includes an integrated power switch. Both Boost and Inverting converters use a novel control scheme resulting ...

Circuit 

 

LT3573 9V-30Vin to ±5Vout @ 350mA Monolithic Isolated Flyback Converter (No Opto or Third Winding)

Oct 29th 2008
The LT3573 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or opto-isolator is required for regulation. The part senses the isolated output voltage directly from the primary-side flyback waveform. A 1.25A, 60V NPN power switch is integrated along with all control ...

Circuit 

 

LT6105 Current Sense Amplifier Monitors Both +15V and -15V Supplies

Greg Zimmer - Senior Product Marketing Engineer Sep 7th 2007
The input common mode range of the LT6105 also makes it suitable for monitoring either positive or negative supplies. The circuit below shows one LT6105 applied as a simple positive supply monitor, and another LT6105 as a simple negative supply monitor. Note that the schematics are practically identical and both have outputs ...

Circuit LTspice 

 

LT3471 5V to ±12V@320mA Dual Supply Boost/Inverting Converter

Sep 23rd 2004
The LT3471 dual switching regulator combines two 42V, 1.3A switches with error amplifi ers that can sense to ground providing boost and inverting capability. The low VCESAT bipolar switches enable the device to deliver high current outputs in a small footprint. The LT3471 switches at 1.2MHz, allowing the use of tiny, low cost ...

Circuit 

 

DC1280A - LT3471EDD Demo Board | Dual 12Vout @ 300mA & -12Vout @ 200mA Boost/Inverter in 3x3 DFN

Sep 23rd 2004
Demonstration circuit 1280A is a dual output converter featuring the LT3471EDD in Boost and Inverter configurations. Both converters are powered from the same 4.5V to 10V input source. The Boost converter puts out 12V at 300mA and the Inverter -12V at 200mA. The demo circuit demonstrates small size and low component count. The ...

Demo Board 

 

LT3472 Li-Ion CCD Bias Supply (15V, -8V)

Sep 8th 2004
The LT3472 delivers up to –8V at 50mA and 15V at 20mA from a lithium-ion cell, providing bias for many popular CCD imagers ...

Circuit 

 

LT1945 Dual Output (+12V@20mA, -20V@10mA) Converter

Sep 20th 2001
From a 2.7V to 5V input, the LT1945 dual boost/inverting regulator generates both positive (12V@20mA) and negative (-20V@10mA) bias voltages for TFT LCD displays ...

Circuit LTspice 

 

LT1945 Dual Output ±32V@5mA Converter

Sep 20th 2001
The LT1945 is a dual micropower DC/DC converter in a 10-pin MSOP package. Each converter is designed with a 350mA current limit and an input voltage range of 1.2V to 15V, making the LT1945 ideal for a wide variety of applications. Both converters feature a quiescent current of only 20μA at no load, which further reduces to ...

Circuit