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. 774-7419
Mfr. Part No.MCP1257-E/MF
BrandMicrochip
€1.31
Each (In a Bag of 5)
units
Regulated 100mA 650 kHz Surface Mount DFN 10 - 3.15 x 3.15 x 0.95mm 0.95mm 3.15mm 3.6 V +125 °C 3.3 V 1.8 V
RS Stock No. 889-5339
Mfr. Part No.MCP1257-E/MF
BrandMicrochip
€1.01
Each (In a Tube of 120)
units
Regulated 100mA 650 kHz Surface Mount DFN 10 - 3.15 x 3.15 x 0.95mm 0.95mm 3.15mm 3.6 V +125 °C 3.3 V 1.8 V
RS Stock No. 920-3615
Mfr. Part No.LM2623MM/NOPB
€0.947
Each (On a Reel of 1000)
units
- 2A - Surface Mount MSOP 8 - 3 x 3 x 0.86mm 0.86mm 3mm - +85 °C 14 V -
RS Stock No. 460-544
Mfr. Part No.LMC7660IN/NOPB
€0.964
Each (In a Pack of 10)
units
Inverting - - Through Hole MDIP 8 - 9.27 x 6.35 x 3.3mm 3.3mm 9.27mm 10 V +85 °C -1.5 V 1.5 V
RS Stock No. 822-9925
Mfr. Part No.LT1054IN8#PBF
€8.28
Each
units
Bi-Polar, Monolithic 100mA 40 kHz Through Hole PDIP 8 3.5 → 15 V 10.16 x 6.477 x 3.302mm 3.302mm 10.16mm 15 V +100 °C 15 V 3.5 V
RS Stock No. 923-1449
Mfr. Part No.ICL7660SIBAZ
€1.307
Each (In a Tube of 98)
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 12 V +85 °C -1.5 V, 22.8 V 1.5 V
RS Stock No. 850-7931
Mfr. Part No.ADM8828ARTZ-REEL7
€2.074
Each (In a Pack of 5)
units
Voltage 50mA 190 kHz Surface Mount SOT-23 6 - 3.1 x 1.8 x 1.3mm 1.3mm 3.1mm 5.5 V +85 °C -5.5 V 1.5 V
RS Stock No. 460-588
Mfr. Part No.MAX660M/NOPB
€1.67
Each (In a Pack of 5)
units
Inverting, Step Up - - 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. 921-5591
Mfr. Part No.ICL7660SIBAZ
€1.434
Each (In a Pack of 5)
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 12 V +85 °C -1.5 V, 22.8 V 1.5 V
RS Stock No. 160-9936
Mfr. Part No.ADM8828ARTZ-REEL7
€1.143
Each (On a Reel of 3000)
units
Voltage 50mA 190 kHz Surface Mount SOT-23 6 - 3.1 x 1.8 x 1.3mm 1.3mm 3.1mm 5.5 V +85 °C -5.5 V 1.5 V
RS Stock No. 155-7582
Mfr. Part No.LT1054IN8#PBF
€5.179
Each (In a Tube of 50)
units
Bi-Polar, Monolithic 100mA 40 kHz Through Hole PDIP 8 3.5 → 15 V 10.16 x 6.477 x 3.302mm 3.302mm 10.16mm 15 V +100 °C 15 V 3.5 V
RS Stock No. 121-8323
Mfr. Part No.MAX660M/NOPB
€1.473
Each (In a Tube of 95)
units
Inverting, Step Up - - 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. 533-3901
Mfr. Part No.LM2623MM/NOPB
€1.37
Each
units
- 2A - Surface Mount MSOP 8 - 3 x 3 x 0.86mm 0.86mm 3mm - +85 °C 14 V -
RS Stock No. 165-9256
Mfr. Part No.MAX680ESA+
€3.421
Each (In a Tube of 100)
units
Inverting, Step Up 10mA 8 kHz Surface Mount SOIC 8 1.5 → 1.6 V 5 x 4 x 1.5mm 1.5mm 5mm 6 V +85 °C - 2 V
RS Stock No. 917-5778
Mfr. Part No.MP9361DJ-LF-P
€1.19
Each (In a Pack of 5)
units
Charge Pump 110mA 1.6 MHz Surface Mount TSOT-23 6 3.7 V 3 x 1.7 x 0.9mm 0.9mm 3mm 5 V +85 °C 5.2 V 2.8 V
RS Stock No. 412-585
Mfr. Part No.ADM660ARZ
€4.462
Each (In a Pack of 5)
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 7 V +85 °C 1.7 V, 14 V 1.5 V
RS Stock No. 823-0852
Mfr. Part No.TCM828ECT713
BrandMicrochip
€0.39
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. 622-9033
Mfr. Part No.MAX864EEE+
€2.85
Each
units
Inverting, Step Up - - Surface Mount QSOP 16 - 4.98 x 3.99 x 1.55mm 1.55mm 4.98mm 6 V +85 °C ±12 V 1.75 V
RS Stock No. 159-7412
Mfr. Part No.TC7662AEPA
BrandMicrochip
€2.703
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. 540-2912
Mfr. Part No.ICL7660CPA+
€2.12
Each
units
Inverting, Step Up 225µA 10 kHz Through Hole PDIP 8 - 9.91 x 7.87 x 4.45mm 4.45mm 9.91mm 10 V +70 °C -1.5 V, 20 V 1.5 V
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