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. 622-8894
Mfr. Part No.MAX660CSA+
MYR26.79
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
RS Stock No. 761-9276
Mfr. Part No.LTC1983ES6-5#TRMPBF
MYR17.55
Each
units
Charge Pump, Regulated 125mA - Surface Mount SOT-23 6 - 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 5.5 V +85 °C -5.2 V 3 V
RS Stock No. 526-975
Mfr. Part No.TPS60400DBVT
MYR4.55
Each (In a Pack of 5)
units
Inverting, Step Down, Step Up - - Surface Mount SOT-23 5 - 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 5.25 V +125 °C -1.6 V 1.8 V
RS Stock No. 103-9930
Mfr. Part No.ICL7662CPA+
MYR13.82
Each (In a Tube of 50)
units
Inverting 20mA 10 kHz Through Hole PDIP 8 4.5 → 20 V 10.033 x 6.35 x 3.302mm 3.302mm 10.033mm 20 V +70 °C -4.5 V 4.5 V
RS Stock No. 177-7319
Mfr. Part No.LT1054LCS8#PBF
MYR28.05
Each (In a Tube of 100)
units
Inverting, Step Up 125mA 35 kHz Surface Mount SOIC 8 3.5 → 7 V 5.004 x 3.988 x 1.498mm 1.498mm 5mm 7 V +100 °C - 3.5 V
RS Stock No. 177-7264
Mfr. Part No.LTC1044ACS8#PBF
MYR31.021
Each (In a Tube of 100)
units
Inverting, Step Up 20µA - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 12 V +70 °C - 1.5 V
RS Stock No. 732-7642
Mfr. Part No.ICL7662CPA+
MYR16.32
Each
units
Inverting 20mA 10 kHz Through Hole PDIP 8 4.5 to 20 V 10.033 x 6.35 x 3.302mm 3.302mm 10.03mm 20 V +70 °C -4.5 V 4.5 V
RS Stock No. 822-5888
Mfr. Part No.LT1054LCS8#PBF
MYR19.98
Each (In a Pack of 2)
units
Inverting, Step Up 125mA 35 kHz Surface Mount SOIC 8 3.5 to 7 V 5.004 x 3.988 x 1.498mm 1.498mm 5mm 7 V +100 °C - 3.5 V
RS Stock No. 121-8416
Mfr. Part No.TPS60400DBVT
MYR2.964
Each (On a Reel of 250)
units
Inverting, Step Down/Step Up - - Surface Mount SOT-23 5 - 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 5.25 V +125 °C -1.6 V 1.8 V
RS Stock No. 165-9141
Mfr. Part No.MAX660CSA+
MYR18.57
Each (In a Tube of 100)
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
RS Stock No. 761-8917
Mfr. Part No.LTC1044ACS8#PBF
MYR20.19
Each
units
Inverting, Step Up 20µA - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 12 V +70 °C - 1.5 V
RS Stock No. 177-7308
Mfr. Part No.LTC1044CS8#PBF
MYR29.755
Each (In a Tube of 100)
units
Inverting, Step Down/Step Up 200µA 5 kHz Surface Mount SOIC 8 5 V 5.004 x 3.988 x 1.498mm 1.498mm 5mm 9 V +85 °C 3.5 V, 5 V 1.5 V
RS Stock No. 786-9724
Mfr. Part No.LTC1044CS8#PBF
MYR18.99
Each (In a Pack of 2)
units
Inverting, Step Down/Step Up 200µA 5 kHz Surface Mount SOIC 8 5 V 5.004 x 3.988 x 1.498mm 1.498mm 5mm 9 V +85 °C 3.5 V, 5 V 1.5 V
RS Stock No. 704-4436
Mfr. Part No.ICL7660CPAZ
MYR8.352
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 10 V +70 °C -1.5 V 1.5 V
RS Stock No. 145-6799
Mfr. Part No.LT1054CS8#PBF
MYR21.80
Each (In a Tube of 100)
units
Inverting 100mA 25 kHz Surface Mount SOIC 8 - - 1.498mm 5mm 15 V +100 °C - 3.5 V
RS Stock No. 923-1411
Mfr. Part No.ICL7660CPAZ
MYR5.671
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 10 V +70 °C -1.5 V 1.5 V
RS Stock No. 779-8984
Mfr. Part No.LT1054CS8#PBF
MYR26.29
Each (In a Pack of 2)
units
Inverting 100mA 25 kHz Surface Mount SOIC 8 - - 1.498mm 5mm 15 V +100 °C - 3.5 V
RS Stock No. 165-9257
Mfr. Part No.MAX682ESA+
MYR15.79
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. 912-7211
Mfr. Part No.ADM660ARZ
MYR15.79
Each (In a Tube of 98)
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. 403-705
Mfr. Part No.MCP1253-ADJI/MS
BrandMicrochip
MYR5.502
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
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