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. 786-9755
Mfr. Part No.LTC1046CS8#PBF
SGD9.79
Each
units
Inverting, Step Down/Step Up 50mA 30 kHz Surface Mount SOIC 8 - 5.004 x 3.988 x 1.498mm 1.498mm 5mm 6 V +70 °C - 1.5 V
RS Stock No. 177-7310
Mfr. Part No.LTC1046CS8#PBF
SGD15.063
Each (In a Tube of 100)
units
Inverting, Step Down/Step Up 50mA 30 kHz Surface Mount SOIC 8 - 5.004 x 3.988 x 1.498mm 1.498mm 5mm 6 V +70 °C - 1.5 V
RS Stock No. 207-0297
Mfr. Part No.TC7660CPA
BrandMicrochip
SGD1.02
Each
units
- - - Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm - +70 °C 10 V -
RS Stock No. 872-2464
Mfr. Part No.TC7660CPA
BrandMicrochip
SGD0.755
Each (In a Tube of 60)
units
- - - Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm - +70 °C 10 V -
RS Stock No. 165-2030
Mfr. Part No.TC962EPA
BrandMicrochip
SGD2.48
Each (In a Tube of 60)
units
Inverting 80mA 24 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 18 V +85 °C -18 V 3 V
RS Stock No. 774-7898
Mfr. Part No.TC962EPA
BrandMicrochip
SGD3.74
Each (In a Bag of 2)
units
Inverting 80mA 24 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 18 V +85 °C -18 V 3 V
RS Stock No. 622-8917
Mfr. Part No.MAX662ACSA+
BrandMaxim
SGD6.46
Each
units
Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +70 °C - 4.5 V
RS Stock No. 146-1214
Mfr. Part No.ICL7662CBA+
BrandMaxim
SGD5.413
Each (In a Tube of 100)
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 20 V +70 °C -4.5 V 4.5 V
RS Stock No. 165-9143
Mfr. Part No.MAX662ACSA+
BrandMaxim
SGD6.735
Each (In a Tube of 100)
units
Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +70 °C - 4.5 V
RS Stock No. 165-9179
Mfr. Part No.MAX868EUB+
BrandMaxim
SGD4.664
Each (In a Tube of 50)
units
Inverting 35mA 450 kHz Surface Mount μMAX 10 1.8 → 5.5 V 3.15 x 3.15 x 0.94mm 0.94mm 3.15mm 5.5 V +85 °C -3.6 V 1.8 V
RS Stock No. 121-8323
Mfr. Part No.MAX660M/NOPB
SGD1.669
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. 821-1236
Mfr. Part No.TC962CPA
BrandMicrochip
SGD3.151
Each (In a Tube of 60)
units
Charge Pump 80mA 24 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 18 V +70 °C -3 V 3 V
RS Stock No. 460-588
Mfr. Part No.MAX660M/NOPB
SGD2.508
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. 732-7135
Mfr. Part No.MAX868EUB+
BrandMaxim
SGD6.81
Each
units
Inverting 35mA 450 kHz Surface Mount μMAX 10 1.8 → 5.5 V 3.15 x 3.15 x 0.94mm 0.94mm 3.15mm 5.5 V +85 °C -3.6 V 1.8 V
RS Stock No. 622-8743
Mfr. Part No.ICL7662CBA+
BrandMaxim
SGD5.49
Each
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 20 V +70 °C -4.5 V 4.5 V
RS Stock No. 170-8224
Mfr. Part No.ICL7660CBAZA
BrandIntersil
SGD2.067
Each (In a Tube of 98)
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 10 V +70 °C -1.5 V 1.5 V
RS Stock No. 540-2912
Mfr. Part No.ICL7660CPA+
BrandMaxim
SGD3.49
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
RS Stock No. 622-8923
Mfr. Part No.MAX662ACPA+
BrandMaxim
SGD7.97
Each
units
Step Up - - Through Hole PDIP 8 - 9.91 x 7.87 x 4.45mm 4.45mm 9.91mm 5.5 V +70 °C - 4.5 V
RS Stock No. 169-8352
Mfr. Part No.ICL7660SIPAZ
BrandIntersil
SGD2.663
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 +85 °C -1.5 V, 22.8 V 1.5 V
RS Stock No. 622-8894
Mfr. Part No.MAX660CSA+
BrandMaxim
SGD12.09
Each
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +70 °C -1.5 V, 11 V 1.5 V
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