Charge Pumps

Charge pumps are DC to DC converters that are often needed in designs requiring more than one dc supply voltage. It’s made up of switches and capacitors. The switches are usually diodes in discrete designs but are also MOSFETs in IC versions. The capacitors are electrolytic or ceramics depending on the switching speed. There’s no need for an inductor. Charge pumps can double, triple, halve voltages but they can also invert or scale voltages. They are commonly used in low-power electronic devices to suit a voltage for different parts of the circuit.
Charge Pumps have a few advantages over the majority of other types of DC-DC converters and they are:
• Simplicity in build
• Lower cost of production
• Fewer components
• No inductor
• Higher efficiency than linear

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Description Price Converter Type Maximum Output Current Maximum Switching Frequency Mounting Type Package Type Pin Count Typical Operating Supply Voltage Dimensions Height Length Maximum Operating Supply Voltage Maximum Operating Temperature Maximum Output Voltage Minimum Operating Supply Voltage
RS stock no. 912-6993
Mfr. Part No.TCM828ECT713
BrandMicrochip
R 5.279
Each (On a Reel of 3000)
units
Voltage 25mA 12 kHz Surface Mount SOT-23 5 1.5 → 5.5 V 3.1 x 1.8 x 1.3mm 1.3mm 3.1mm 5.5 V +85 °C 6 V 1.5 V
RS stock no. 823-0852
Mfr. Part No.TCM828ECT713
BrandMicrochip
R 6.848
Each (In a Pack of 20)
units
Voltage 25mA 12 kHz Surface Mount SOT-23 5 1.5 → 5.5 V 3.1 x 1.8 x 1.3mm 1.3mm 3.1mm 5.5 V +85 °C 6 V 1.5 V
RS stock no. 100-3887
Mfr. Part No.LM2665M6/NOPB
R 7.995
Each (On a Reel of 1000)
units
Step Up - - Surface Mount SOT-23 6 - 2.92 x 1.6 x 1.02mm 1.02mm 2.92mm 5.5 V +85 °C 11 V 2.5 V
RS stock no. 504-4976
Mfr. Part No.LM2665M6/NOPB
R 15.978
Each (In a Pack of 10)
units
Step Up - - Surface Mount SOT-23 6 - 2.92 x 1.6 x 1.02mm 1.02mm 2.92mm 5.5 V +85 °C 11 V 2.5 V
RS stock no. 163-2072
Mfr. Part No.CAT3200HU2-GT3
R 13.541
Each (On a Reel of 3000)
units
Charge Pump 100mA 2.6 MHz Surface Mount UDFN 8 - 2 x 2 x 0.5mm 0.5mm 2mm 4.5 V +85 °C 5.2 V 2.7 V
RS stock no. 800-9866
Mfr. Part No.CAT3200HU2-GT3
R 28.342
Each (In a Pack of 5)
units
Charge Pump 100mA 2.6 MHz Surface Mount UDFN 8 - 2 x 2 x 0.5mm 0.5mm 2mm 4.5 V +85 °C 5.2 V 2.7 V
RS stock no. 165-3329
Mfr. Part No.TC1240AECHTR
BrandMicrochip
R 11.71
Each (On a Reel of 3000)
units
Voltage Doubler 50mA 125 kHz Surface Mount SOT-23 6 3.25 V 3.1 x 1.75 x 1.3mm 1.3mm 3.1mm 4 V +85 °C 11.6 V 2.5 V
RS stock no. 768-1473
Mfr. Part No.TC1240AECHTR
BrandMicrochip
R 13.846
Each (In a Pack of 10)
units
Voltage Doubler 50mA 125 kHz Surface Mount SOT-23 6 3.25 V 3.1 x 1.75 x 1.3mm 1.3mm 3.1mm 4 V +85 °C 11.6 V 2.5 V
RS stock no. 923-1411
Mfr. Part No.ICL7660CPAZ
R 23.976
Each (In a Tube of 50)
units
Inverting, Step Up - - Through Hole PDIP 8 - 10.16 x 7.11 x 4.95mm 4.95mm 10.16mm 10 V +70 °C -1.5 V 1.5 V
RS stock no. 919-9465
Mfr. Part No.LTC1983ES6-5#TRMPBF
R 48.172
Each (On a Reel of 500)
units
Charge Pump, Regulated 125mA - Surface Mount SOT-23 6 - 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 5.5 V +85 °C -5.2 V 3 V
RS stock no. 102-5723
Mfr. Part No.LMC7660IM/NOPB
R 18.53
Each (In a Tube of 95)
units
Inverting - - Surface Mount SOIC 8 - 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm 10 V +85 °C -1.5 V 1.5 V
RS stock no. 159-7412
Mfr. Part No.TC7662AEPA
BrandMicrochip
R 51.43
Each (In a Tube of 60)
units
Inverting 40mA 12 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 18 V +85 °C - 3 V
RS stock no. 921-5551
Mfr. Part No.ICL7660CPAZ
R 28.932
Each (In a Pack of 5)
units
Inverting, Step Up - - Through Hole PDIP 8 - 10.16 x 7.11 x 4.95mm 4.95mm 10.16mm 10 V +70 °C -1.5 V 1.5 V
RS stock no. 738-6266
Mfr. Part No.TC7662AEPA
BrandMicrochip
R 61.62
Each
units
Inverting 40mA 12 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 18 V +85 °C - 3 V
RS stock no. 536-0212
Mfr. Part No.LMC7660IM/NOPB
R 20.87
Each (In a Pack of 5)
units
Inverting - - Surface Mount SOIC 8 - 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm 10 V +85 °C -1.5 V 1.5 V
RS stock no. 761-9276
Mfr. Part No.LTC1983ES6-5#TRMPBF
R 69.35
Each
units
Charge Pump, Regulated 125mA - Surface Mount SOT-23 6 - 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 5.5 V +85 °C -5.2 V 3 V
RS stock no. 912-6990
Mfr. Part No.TC7662BEOA
BrandMicrochip
R 28.211
Each (In a Tube of 100)
units
Inverting 20mA 35 kHz Surface Mount SOIC 8 - 4.9 x 3.91 x 1.42mm 1.42mm 4.9mm 15 V +85 °C - 1.5 V
RS stock no. 533-3951
Mfr. Part No.LM2662M/NOPB
R 49.60
Each
units
Inverting, Step Down, Step Up 200mA - Surface Mount SOIC 8 - 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm 5.5 V +85 °C -1.5 V 1.5 V
RS stock no. 761-7970
Mfr. Part No.LT1026CS8#PBF
R 92.31
Each
units
Inverting - - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 10 V +70 °C 18 V 4 V
RS stock no. 920-3624
Mfr. Part No.LM2662M/NOPB
R 41.201
Each (In a Tube of 95)
units
Inverting, Step Down, Step Up 200mA - Surface Mount SOIC 8 - 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm 5.5 V +85 °C -1.5 V 1.5 V