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. 170-4505
Mfr. Part No.SP6661EN-L
BrandEXAR
kr 11,866
Each (In a Tube of 98)
Units
Inverting, Voltage Doubler 200mA 1250 kHz Surface Mount SOIC 8 5 V 4.9 x 3.9 x 1.65mm 1.65mm 4.9mm 5.3 V +85 °C -5 V, 10 V 1.5 V
RS Stock No. 769-5416
Mfr. Part No.SP6661EN-L
BrandEXAR
kr 15,055
Each (In a Pack of 2)
Units
Inverting, Voltage Doubler 200mA 1250 kHz Surface Mount SOIC 8 5 V 4.9 x 3.9 x 1.65mm 1.65mm 4.9mm 5.3 V +85 °C -5 V, 10 V 1.5 V
RS Stock No. 545-5988
Mfr. Part No.LTC1044CN8#PBF
kr 34,99
Each
Units
Inverting, Step Down, Step Up - - Through Hole PDIP 8 - 10.16 x 6.48 x 3.3mm 3.3mm 10.16mm 9 V +85 °C -1.5 V, 4.5 V 1.5 V
RS Stock No. 145-6358
Mfr. Part No.LTC1044CN8#PBF
kr 23,276
Each (In a Tube of 50)
Units
Inverting, Step Down, Step Up - - Through Hole PDIP 8 - 10.16 x 6.48 x 3.3mm 3.3mm 10.16mm - +85 °C -1.5 V, 4.5 V -
RS Stock No. 921-5598
Mfr. Part No.ICL7660ACPAZ
kr 16,73
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 12 V +70 °C -1.5 V 1.5 V
RS Stock No. 177-7265
Mfr. Part No.LTC1144IS8#PBF
kr 39,267
Each (In a Tube of 100)
Units
Charge Pump, Regulated 4µA - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 18 V +85 °C -18 V 2 V
RS Stock No. 704-4482
Mfr. Part No.ICL7660ACPAZ
kr 15,374
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 12 V +70 °C -1.5 V 1.5 V
RS Stock No. 923-1430
Mfr. Part No.ICL7660ACPAZ
kr 13,938
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 12 V +70 °C -1.5 V 1.5 V
RS Stock No. 761-8945
Mfr. Part No.LTC1144IS8#PBF
kr 61,61
Each
Units
Charge Pump, Regulated 4µA - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 18 V +85 °C -18 V 2 V
RS Stock No. 460-544
Mfr. Part No.LMC7660IN/NOPB
kr 9,701
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. 732-7646
Mfr. Part No.ICL7662EBA+
kr 48,25
Each
Units
Inverting 20mA 10 kHz Surface Mount SOIC 8 4.5 to 20 V 8.737 x 4.013 x 1.55mm 1.55mm 8.74mm 20 V +85 °C -4.5 V 4.5 V
RS Stock No. 732-7699
Mfr. Part No.MAX1681ESA+
kr 20,24
Each
Units
Inverting, Step Up 125mA 1490 kHz Surface Mount SOIC 8 2 → 5.5 V 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +85 °C -3.75 V 2 V
RS Stock No. 190-0278
Mfr. Part No.MAX660ESA+
kr 63,11
Each
Units
Inverting, Step Up 100mA - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +85 °C - 1.5 V
RS Stock No. 146-1215
Mfr. Part No.MAX1044CSA+
kr 16,321
Each (In a Tube of 100)
Units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 10 V +70 °C -1.5 V, 20 V 1.5 V
RS Stock No. 145-6317
Mfr. Part No.LTC3261IMSE#PBF
kr 45,355
Each (In a Tube of 37)
Units
Inverting 100mA 550 kHz Surface Mount MSOP 12 4.5 → 32 V 4.039 x 3 x 0.86mm 0.86mm 4.04mm 32 V +150 °C -32 V 4.5 V
RS Stock No. 774-7888
Mfr. Part No.TC7660SEOA
BrandMicrochip
kr 8,076
Each (In a Bag of 5)
Units
Inverting 20mA 45 kHz Surface Mount SOIC 8 - 5 x 3.99 x 1.5mm 1.5mm 5mm 12 V +85 °C -12 V 1.5 V
RS Stock No. 774-7400
Mfr. Part No.MCP1256-E/UN
BrandMicrochip
kr 7,866
Each (In a Bag of 5)
Units
Regulated 100mA 650 kHz Surface Mount MSOP 10 - 3 x 3 x 0.95mm 0.95mm 3mm 3.6 V +125 °C 3.3 V 1.8 V
RS Stock No. 732-7703
Mfr. Part No.MAX1759EUB+
kr 43,97
Each
Units
Step Down, Step Up 100mA 1800 kHz Surface Mount μMAX 10 1.6 → 5.5 V 3.05 x 3.05 x 0.95mm 0.95mm 3.05mm 5.5 V +85 °C 3.3 V, 5.5 V 1.6 V
RS Stock No. 189-6910
Mfr. Part No.ICL7662CBD+
kr 30,879
Each (In a Tube of 50)
Units
Inverting 20mA 10 kHz Surface Mount SOIC 14 4.5 → 20 V 8.737 x 4.013 x 1.55mm 1.55mm 8.737mm 20 V +70 °C -4.5 V 4.5 V
RS Stock No. 207-0297
Mfr. Part No.TC7660CPA
BrandMicrochip
kr 7,08
Each
Units
- - - Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm - +70 °C 10 V -
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