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. 821-1227
Mfr. Part No.TC7662BEOA713
BrandMicrochip
TWD33.50
Each (On a Reel of 3300)
units
Charge Pump 20mA 35 kHz Surface Mount SOIC 8 - 5 x 3.99 x 1.5mm 1.5mm 5mm 15 V +85 °C -15 V 1.5 V
RS Stock No. 912-6990
Mfr. Part No.TC7662BEOA
BrandMicrochip
TWD37.20
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. 823-0852
Mfr. Part No.TCM828ECT713
BrandMicrochip
TWD11.90
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. 889-6045
Mfr. Part No.TC7662ACPA
BrandMicrochip
TWD48.00
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 +70 °C -3 V 3 V
RS Stock No. 681-1102
Mfr. Part No.TC7662ACPA
BrandMicrochip
TWD76.00
Each
units
Inverting 40mA 12 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. 912-6993
Mfr. Part No.TCM828ECT713
BrandMicrochip
TWD8.20
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. 738-6269
Mfr. Part No.TC7662BEOA
BrandMicrochip
TWD62.00
Each (In a Pack of 2)
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. 165-3331
Mfr. Part No.TC1240ECHTR
BrandMicrochip
TWD21.40
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 9 V 2.5 V
RS Stock No. 872-2461
Mfr. Part No.TC7660COA
BrandMicrochip
TWD20.30
Each (In a Tube of 100)
units
- - - Surface Mount SOIC 8 - 4.9 x 3.91 x 1.42mm 1.42mm 4.9mm - +70 °C 10 V -
RS Stock No. 889-5572
Mfr. Part No.MCP1253-33X50I/MS
BrandMicrochip
TWD33.10
Each (In a Tube of 100)
units
Step Down/Step Up 120mA 1 MHz Surface Mount MSOP 8 - 3 x 3 x 0.85mm 0.85mm 3mm 5.5 V +85 °C - 2.1 V
RS Stock No. 872-2464
Mfr. Part No.TC7660CPA
BrandMicrochip
TWD17.90
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. 774-7872
Mfr. Part No.TC7660EOA
BrandMicrochip
TWD27.20
Each (In a Bag of 5)
units
Inverting 20mA 10 kHz Surface Mount SOIC 8 - 4.9 x 3.9 x 1.5mm 1.5mm 4.9mm 10 V +85 °C -10 V 1.5 V
RS Stock No. 821-1236
Mfr. Part No.TC962CPA
BrandMicrochip
TWD78.40
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. 774-7419
Mfr. Part No.MCP1257-E/MF
BrandMicrochip
TWD49.40
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. 165-4688
Mfr. Part No.MCP1253-ADJI/MS
BrandMicrochip
TWD34.40
Each (In a Tube of 100)
units
Step Down, Step Up 120mA 1 MHz Surface Mount MSOP 8 - 3 x 3 x 0.85mm 0.85mm 3mm 5.5 V +85 °C 5.5 V 2 V
RS Stock No. 774-7636
Mfr. Part No.TC1044SEPA
BrandMicrochip
TWD31.60
Each (In a Bag of 5)
units
Inverting 20mA 45 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 12 V +85 °C -12 V 1.5 V
RS Stock No. 144-5828
Mfr. Part No.TC7660EPA
BrandMicrochip
TWD16.20
Each (In a Tube of 60)
units
Inverting 20mA 10 kHz Through Hole PDIP 8 - 10.16 x 7.62 x 4.45mm 4.45mm 10.16mm 10 V +85 °C -10 V 1.5 V
RS Stock No. 403-705
Mfr. Part No.MCP1253-ADJI/MS
BrandMicrochip
TWD45.60
Each (In a Pack of 5)
units
Step Down, Step Up 120mA 1 MHz Surface Mount MSOP 8 - 3 x 3 x 0.85mm 0.85mm 3mm 5.5 V +85 °C 5.5 V 2 V
RS Stock No. 165-3329
Mfr. Part No.TC1240AECHTR
BrandMicrochip
TWD21.40
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. 146-0202
Mfr. Part No.MCP1256-E/UN
BrandMicrochip
TWD38.40
Each (In a Tube of 100)
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