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Solutions Search - High Voltage Charge Pumps

LTC7820 High Efficiency 24V to –24V, 10A Voltage Inverter with Hot Swap at Input

Jul 24th 2017
The LTC®7820 is a fixed ratio high voltage high power switched capacitor/charge pump controller. The device includes four N-channel MOSFET gate drivers to drive external power MOSFETs in voltage divider, doubler or inverter configurations. The device achieves a 2:1 stepdown ratio from an input voltage as high as 72V, a 1:2 ...

Circuit 

 

LTC7820 High Efficiency 48V to 12V, 20A Voltage Divider

Jul 24th 2017
The LTC®7820 is a fixed ratio high voltage high power switched capacitor/charge pump controller. The device includes four N-channel MOSFET gate drivers to drive external power MOSFETs in voltage divider, doubler or inverter configurations. The device achieves a 2:1 stepdown ratio from an input voltage as high as 72V, a 1:2 ...

Circuit 

 

LTC7820 High Efficiency 24V to 12V, 15A Voltage Divider with Disconnect FET at Output

Jul 24th 2017
The LTC®7820 is a fixed ratio high voltage high power switched capacitor/charge pump controller. The device includes four N-channel MOSFET gate drivers to drive external power MOSFETs in voltage divider, doubler or inverter configurations. The device achieves a 2:1 stepdown ratio from an input voltage as high as 72V, a 1:2 ...

Circuit 

 

72V Fixed-Ratio DC/DC Controller Eliminates Power Inductor & Delivers 500W in Non-Isolated Intermediate Bus Converter Applications

Jun 20th 2017
MILPITAS, CA and NORWOOD, MA – June 20, 2017 – Analog Devices, Inc., which recently acquired Linear Technology Corporation, announces the LTC7820, a high power fixed ratio charge pump DC/DC controller that eliminates the power inductor in a non-isolated intermediate bus converter, allowing up to a ...

Press Release 

 

DC2543A - LTC7820EUFD Demo Board | 2:1 Step-Down Charge Pump, 36V ≤ VIN ≤ 60V, VOUT = 0.5VIN @ Up to 20A

May 18th 2017
Demonstration circuit 2543A is a high efficiency, high density, open loop charge pump (inductorless) DC/DC converter. This demo board is a voltage divider which achieves a 2:1 step-down ratio from an input voltage from 36V to 60V. The output voltage is a fixed ratio of half of the input voltage (VIN/2) and can supply a 10A load ...

Demo Board 

 

Low Noise Power Supplies Come in Many Flavors: Part 2 - Charge Pump Solutions

Kevin B. Scott - Senior Strategic Marketing Engineer
Amit Lele - Senior Design Engineer
Mar 23rd 2017
Charge pump solutions are often thought to be too noisy for low noise applications. Engineers associate charge pump power supplies with peak-to-peak noise levels in the 20mV to 200mV range. Linear Technology's latest family of regulated charge pump plus linear regulator power supply solutions are inductorless, small size, low ...

Blog Post 

 

Clever Circuit Improves Efficiency of Charge Pump Plus Linear Regulator Solution

Martin Merchant - Sr. Applications Engineer
Kevin B. Scott - Senior Strategic Marketing Engineer
Oct 4th 2016
In some systems, a charge pump plus linear regulator combination is preferred over an inductor-based switching power supply (with or without a post-regulating linear regulator) for several reasons: design simplicity, less radiated EMI, inductor-phobia, etc. For these applications, Linear Technology has a growing number ...

Blog Post 

 

DC2375A - LTC3256 Demo Board | Dual Output Step-Down Charge Pump Plus LDO, 5.5V ≤ VIN ≤ 38V, Vout1 = 5V @ 100mA, Vout2 = 3.3V @ 250mA

Sep 20th 2016
Demonstration Circuit 2375A is a dual output 350mA step down charge pump with a post-regulator LDO and watchdog timer featuring the LTC®3256EMSE. The LTC3256 operates with a wide input voltage range from 5.5V to 38V and is engineered for diagnostic coverage in ISO262262 systems. The LTC3256 can provide up to 350mA of output ...

Demo Board 

 

LTC3245 High Efficiency 3.3V Microcontroller Supply from 9V Alkaline (with Power-On Reset Delay)

Sep 2nd 2016
The LTC3245 is a switched capacitor buck-boost DC/DC converter that produces a regulated output (3.3V, 5V or adjustable) from a 2.7V to 38V input. The device uses switched capacitor fractional conversion to maintain regulation over a wide range of input voltage. Internal circuitry automatically selects the conversion ratio to ...

Circuit 

 

LTC3245 Wide Input Range Low Noise 3.6V Supply

Sep 2nd 2016
The LTC3245 is a switched capacitor buck-boost DC/DC converter that produces a regulated output (3.3V, 5V or adjustable) from a 2.7V to 38V input. The device uses switched capacitor fractional conversion to maintain regulation over a wide range of input voltage. Internal circuitry automatically selects the conversion ratio to ...

Circuit 

 

LTC3245 Wide VIN 5V Supply with Battery Backup

Sep 2nd 2016
The LTC3245 is a switched capacitor buck-boost DC/DC converter that produces a regulated output (3.3V, 5V or adjustable) from a 2.7V to 38V input. The device uses switched capacitor fractional conversion to maintain regulation over a wide range of input voltage. Internal circuitry automatically selects the conversion ratio to ...

Circuit 

 

LTC3261 15V to –15V Inverter

Sep 2nd 2016
The LTC®3261 is a high voltage inverting charge pump that operates over a wide 4.5V to 32V input range and is capable of delivering up to 100mA of output current. ...

Circuit 

 

LTC3261 24V to –24V 100mA Inverter

Sep 2nd 2016
The LTC®3261 is a high voltage inverting charge pump that operates over a wide 4.5V to 32V input range and is capable of delivering up to 100mA of output current. ...

Circuit 

 

High Voltage Dual Output Step-Down Charge Pump Offers Lower Power Dissipation with No Inductors

Aug 11th 2016
MILPITAS, CA – August 11, 2016 – Linear Technology Corporation announces the LTC3256, a highly integrated, high voltage low noise dual output power supply, which takes a single positive input and generates 5V and 3.3V step-down supplies with high efficiency and no inductors. The device features a wide 5.5V to 38V ...

Press Release 

 

LTC3256 High Efficiency Dual 5V/3.3V Output Power Supply

Jul 29th 2016
The LTC3256 is a wide input range switched capacitor step-down DC/DC converter that produces two regulated outputs: a 5V output via direct connection to the charge pump output, and a 3.3V output via a low dropout (LDO) linear post-regulator. The device provides up to 350mA of total output current. At 12V VIN and maximum load ...

Circuit 

 

LTC3255 48VIN Fault-Protected 50mA Regulated Output Step-Down Charge Pump - Video Product Brief

Steve Knoth - Senior Product Marketing Engineer Nov 18th 2014
The LTC®3255 is a switched-capacitor step-down DC/DC converter that produces a regulated output (2.4V to 12.5V adjustable) from a 4V to 48V input. In applications where the input voltage exceeds twice the output voltage, 2:1 capacitive charge pumping extends output current capability beyond input supply current limits. ...

Video 

 

LTC3245 2.7V to 38VIN, 250mA Buck-Boost Charge Pump - Video Product Brief

Steve Knoth - Senior Product Marketing Engineer Oct 15th 2014
The LTC3245 is a switched capacitor buck-boost DC/DC converter that produces a regulated output (3.3V, 5V or adjustable) from a 2.7V to 38V input. The device uses switched capacitor fractional conversion to maintain regulation over a wide range of input voltage. Internal circuitry automatically selects the conversion ratio ...

Video 

 

DC2041A - LTC3255EMSE Demo Board | -52V/60V Fault-Protected Step-Down Charge Pump, 4V ≤ VIN ≤ 48V, Vout = 2.5V/3.3V/5V/12V/Adj @ 50mA

Oct 3rd 2013
Demonstration circuit 2041A is a regulated output voltage switched-capacitor step-down power supply featuring the 50mA output LTC®3255. When VIN exceeds VOUT by more the 2:1, a 2:1 step-down architecture is used to efficiently regulate the output voltage, reducing the input current needed. As VIN reduces below twice VOUT, ...

Demo Board 

 

60V Fault-Protected, 50mA Step-Down Charge Pump Provides Regulated Output with Input Current Doubling

Sep 25th 2013
MILPITAS, CA – September 25, 2013 – Linear Technology Corporation announces the LTC3255, a versatile high voltage step-down switched capacitor converter that delivers up to 50mA of output current. In applications where the input voltage exceeds twice the output voltage, a charge pump offers nearly twice the efficiency of ...

Press Release 

 

LTC3255 3.3V@7.4mA DC Supply from 4mA to 20mA Current Loop

Sep 16th 2013
The LTC3255 is a switched-capacitor step-down DC/DC converter that produces a regulated output (2.4V to 12.5V adjustable) from a 4V to 48V input. In applications where the input voltage exceeds twice the output voltage, 2:1 capacitive charge pumping extends output current capability beyond input supply current limits. At no ...

Circuit 

 

LTC3255 5V@7mA Supply from 4mA to 20mA Current Loop

Sep 16th 2013
The LTC3255 is a switched-capacitor step-down DC/DC converter that produces a regulated output (2.4V to 12.5V adjustable) from a 4V to 48V input. In applications where the input voltage exceeds twice the output voltage, 2:1 capacitive charge pumping extends output current capability beyond input supply current limits. At no ...

Circuit 

 

LTC3255 Wide Input Range 5V Microcontroller Supply (with Power-On Reset Delay)

Sep 16th 2013
The LTC®3255 is a switched-capacitor step-down DC/DC converter that produces a regulated output (2.4V to 12.5V adjustable) from a 4V to 48V input. In applications where the input voltage exceeds twice the output voltage, 2:1 capacitive charge pumping extends output current capability beyond input supply current limits. At ...

Circuit 

 

LTC3255 Wide Input Range 12V Charge Pump Supply

Sep 16th 2013
The LTC®3255 is a switched-capacitor step-down DC/DC converter that produces a regulated output (2.4V to 12.5V adjustable) from a 4V to 48V input. In applications where the input voltage exceeds twice the output voltage, 2:1 capacitive charge pumping extends output current capability beyond input supply current limits. At ...

Circuit 

 

250mA Wide VIN Range Buck-Boost Charge Pump with Low Noise Now Offered in High Reliability, MP-Grade Temperature Range

Aug 20th 2013
MILPITAS, CA – August 20, 2013 – Linear Technology Corporation announces a new high reliability MP-grade, wider temperature range version of the LTC3245, a versatile 250mA high voltage buck-boost charge pump. The MP grade has an operating junction temperature range of -55°C to +150°C. The LTC3245 uses switched capacitor fractional ...

Press Release 

 

DC1802A - LTC3245EMSE Demo Board | Buck-Boost Charge Pump, 2.7V ≤ VIN ≤ 38V, Vout = 1.2V/3.3V/5V @ 250mA

Mar 21st 2013
Demonstration circuit DC1802A is a wide VIN range, low noise, 250mA buck-boost charge pump featuring the LTC®3245EMSE. It has an input supply range of 2.7V to 38V and provides a jumper-selectable 5V, 3.3V, or adjustable output (set to 1.2V) at 250mA. ...

Demo Board 

 

250mA Wide VIN Range Buck-Boost Charge Pump Offers Low Conducted and Radiated Noise

Mar 19th 2013
MILPITAS, CA – March 19, 2013 – Linear Technology Corporation announces the LTC3245, a versatile 250mA high voltage buck-boost charge pump. The LTC3245 uses switched capacitor fractional conversion to maintain regulation over a wide range of input voltage from 2.7V to 38V and produces a regulated output of 3.3V, 5V or adjustable ...

Press Release 

 

High Voltage Inverting Charge Pump Produces Low Noise Positive and Negative Supplies

Martin Merchant - Sr. Applications Engineer Oct 1st 2012
Introduction 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 ...

Blog Post 

 

DC1882A - LTC3261EMSE Demo Board | High Voltage, Low Iq Inverting Charge Pump, 4.5V ≤ VIN ≤ 32V, Vout = -VIN @ 100mA

May 30th 2012
Demonstration circuit 1882 is a high voltage inverting charge pump featuring the LTC®3261EMSE. The LTC3261 operates with an input voltage from 4.5V to 32V and provides up to 100mA of output current. The output voltage is unregulated and is the negative of the input voltage (-VIN). The demo board provides selectable Burst ...

Demo Board 

 

DC1793A - LTC3260EMSE Demo Board | Low Noise Dual Supply Inverting Charge Pump Plus ±LDO, 4.5V ≤ VIN ≤ 32V, Vout = ±3.3V/±5V/±12V/±24V/±Adj @ ±50mA

May 30th 2012
Demonstration circuit 1793A is a high voltage inverting charge pump with low noise dual-polarity LDO regulators featuring the LTC®3260EMSE. The LTC3260 operates with an input voltage from 4.5V to 32V. The demo board provides selectable LDO± output set magnitudes of 3.3V, 5V, 12V and 24V for each polarity. Additional ...

Demo Board LTspice 

 

High Voltage Inverting Charge Pumps Offer Low Input & Output Ripple

May 9th 2012
MILPITAS, CA – May 9, 2012 – Linear Technology Corporation announces the LTC3260 and LTC3261 versatile high voltage charge pumps. The LTC3261 is a high voltage inverting charge pump that can deliver up to 100mA of output current. The LTC3260 has the same charge pump as the LTC3261, but also includes both positive and negative ...

Press Release 

 

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