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. 921-5608
Mfr. Part No.ICL7660AIBAZA
TWD52.60
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 1.5 V
RS Stock No. 662-4750
Mfr. Part No.LT1054IP
TWD72.20
Each (In a Pack of 5)
units
Inverting, Step Up - - Through Hole PDIP 8 - 9.81 x 6.35 x 4.57mm 4.57mm 9.81mm 15 V +85 °C - 3.5 V
RS Stock No. 165-9257
Mfr. Part No.MAX682ESA+
TWD123.50
Each (In a Tube of 100)
units
Step Down 300mA 2000 kHz Surface Mount SOIC 8 2.7 → 5.5 V 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +85 °C 5.2 V 2.7 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. 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. 146-1288
Mfr. Part No.MAX1044CPA+
TWD56.90
Each (In a Tube of 50)
units
Inverting 200µA 5 kHz Through Hole PDIP 8 30 V 9.91 x 7.87 x 4.45mm 4.45mm 9.91mm 200 V +70 °C 10 V -
RS Stock No. 806-2447
Mfr. Part No.MAX1720EUTG
TWD19.40
Each (In a Pack of 20)
units
Charge Pump, Inverting 100mA 21 kHz Surface Mount TSOP 6 1.15 → 6 V 3.1 x 1.7 x 1mm 1mm 3.1mm 6 V +85 °C 0.3 V 1.5 V
RS Stock No. 146-1215
Mfr. Part No.MAX1044CSA+
TWD60.70
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. 923-1402
Mfr. Part No.ICL7660CBAZ
TWD36.50
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. 704-7019
Mfr. Part No.ICL7660CBAZA
TWD65.20
Each (In a Pack of 5)
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. 533-3951
Mfr. Part No.LM2662M/NOPB
TWD67.00
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. 163-2072
Mfr. Part No.CAT3200HU2-GT3
TWD27.50
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
New
RS Stock No. 190-0565
Mfr. Part No.MAX829EUK+T
TWD208.00
Each (In a Pack of 2)
units
Inverting 50mA 35 kHz Surface Mount SOT-23 5 1 V 3 x 1.75 x 1.3mm 1.3mm 3mm 5.5 V +85 °C -1.5 V 1.25 V
RS Stock No. 122-0078
Mfr. Part No.NCP1729SN35T1G
TWD13.50
Each (On a Reel of 3000)
units
Inverting 100mA 35 kHz Surface Mount TSOP 6 - 3 x 1.5 x 0.94mm 0.94mm 3mm 5.5 V +150 °C -1.15 V 1.15 V
RS Stock No. 786-0925
Mfr. Part No.MAX1595EUA50+
TWD128.50
Each (In a Pack of 2)
units
Step Down, Step Up 125mA 1.15 MHz Surface Mount μMAX 8 - 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 5.5 V +85 °C 5.15 V 1.8 V
RS Stock No. 761-7970
Mfr. Part No.LT1026CS8#PBF
TWD147.00
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. 622-8923
Mfr. Part No.MAX662ACPA+
TWD146.00
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. 133-0662
Mfr. Part No.LM27761DSGT
TWD58.60
Each (In a Pack of 5)
units
Inverting 250mA 2.3 MHz Surface Mount WSON 8 - 2.1 x 2.1 x 0.75mm 0.75mm 2.1mm 5.5 V +85 °C -5.2 V 2.7 V
New
RS Stock No. 190-0321
Mfr. Part No.MAX868EUB+
TWD143.20
Each (In a Pack of 5)
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. 772-8792
Mfr. Part No.MCP1259-E/MF
BrandMicrochip
TWD54.00
Each (In a Tube of 5)
units
Charge Pump 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