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Solutions Search - Regulated Step-Down Charge Pumps

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 

 

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 

 

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 

 

Spread Spectrum Frequency Modulation Reduces EMI

Kevin B. Scott - Senior Strategic Marketing Engineer
Greg Zimmer - Senior Product Marketing Engineer
Nov 4th 2015
Electromagnetic Radiation (EMR), Electromagnetic Interference (EMI) and Electromagnetic Compliance (EMC) are terms that pertain to energy from electrically charged particles and the associated magnetic fields that can potentially interfere with circuit performance and signal transmissions. With the proliferation of wireless ...

Blog Post 

 

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 

 

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 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 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 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 

 

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 

 

DC611A - LTC3252EDE Demo Board | Dual, Spread-Spectrum, Low Noise Inductorless, Step Down Charge Pump, 2.7V ≤ VIN ≤ 5.5V, Vout1 = 1.5V @ 250mA, Vout2 = 1.2V@250mA

Jun 5th 2003
Demonstration circuit 611 is a dual, spread-spectrum, step-down charge pump DC/DC converter featuring the LTC®3252EDE. It produces regulated 1.5V and 1.2V output voltages at up to 250mA of output current each, from a 2.7V to 5.5V input. The unique spread spectrum architecture of the LTC3252 provides highly efficient, low ...

Demo Board 

 

DC506A - LTC3251EMSE Demo Board | Spread-Spectrum, Low Noise, Inductorless Step-Down Charge Pump, 3.2V ≤ VIN ≤ 5.5V, Vout @ Up to 500mA

Aug 28th 2002
Demonstration circuit 506A is a two-phase, step down charge pump DC/DC converter featuring the LTC3251EMSE. It produces a regulated 1.5V output voltage at up to 500mA of output current from a 3.2V to 5.5V input. The LTC3251's unique two-phase, spread spectrum architecture provides high efficient and low noise operation. ...

Demo Board 

 

DC488A - LTC3250ES6-1.5 Demo Board | Low Noise Regulated Step-Down Charge Pump, 3.1V ≤ VIN ≤ 5.5V, Vout = 1.5V @ 250mA

Apr 26th 2002
Demonstration circuit 488 is a high efficiency, inductorless step-down converter featuring the LTC3250-1.5. The circuit produces a fixed 1.5V output from a 3.1V to 5.5V input. ...

Demo Board 

 

DC342A-A - LTC1911EMS8-1.8 | Low Noise, Constant Frequency Step-Down Charge Pump

Aug 5th 2001
DC342A-A - Demo Board for:LTC1911 - Low Noise, High Efficiency, Inductorless Step-Down DC/DC Converter ...

Demo Board 

 

DC342A-B - LTC1911EMS8-1.5 | Low Noise, Constant Frequency Step-Down Charge Pump

Aug 5th 2001
DC342A-B - Demo Board for:LTC1911 - Low Noise, High Efficiency, Inductorless Step-Down DC/DC Converter ...

Demo Board 

 

DC250A-B - LTC1503CMS8-1.8 | High Efficiency Inductorless Step-Down DC/DC Converter, 2.4 to 6Vin, 1.8Vout @ 100mA

May 28th 1999
DC250A-B - Demo Board for:LTC1503 - High Efficiency Inductorless Step-Down DC/DC Converter ...

Demo Board 

 

DC250A-A - LTC1503CMS8-2 | High Efficiency Inductorless Step-Down DC/DC Converter, 2.4 to 6Vin, 2Vout @ 100mA

May 28th 1999
DC250A-A - Demo Board for:LTC1503 - High Efficiency Inductorless Step-Down DC/DC Converter ...

Demo Board