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
Charge Pumps
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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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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RS Stock No.
786-9755
Mfr. Part No.LTC1046CS8#PBF
BrandAnalog Devices
|
SGD9.68
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.
774-7898
Mfr. Part No.TC962EPA
BrandMicrochip
|
SGD4.245
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.
872-2464
Mfr. Part No.TC7660CPA
BrandMicrochip
|
SGD0.995
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.
207-0297
Mfr. Part No.TC7660CPA
BrandMicrochip
|
SGD1.17
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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|
RS Stock No.
165-2030
Mfr. Part No.TC962EPA
BrandMicrochip
|
SGD3.12
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.
821-1236
Mfr. Part No.TC962CPA
BrandMicrochip
|
SGD3.12
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
BrandTexas Instruments
|
SGD2.382
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.
121-8323
Mfr. Part No.MAX660M/NOPB
BrandTexas Instruments
|
SGD2.36
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.
851-6761
Mfr. Part No.LTC3261IMSE#PBF
BrandAnalog Devices
|
SGD11.98
Each
units
|
Inverting | 100mA | 550 kHz | Surface Mount | MSOP | 12 | 4.5 to 32 V | 4.039 x 3 x 0.86mm | 0.86mm | 4.04mm | 32 V | +150 °C | -32 V | 4.5 V |
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RS Stock No.
858-0677
Mfr. Part No.LTC3226EUD#PBF
BrandAnalog Devices
|
SGD9.69
Each (In a Pack of 2)
units
|
Charge Pump | 2A | 1.05 MHz | Surface Mount | QFN | 16 | - | 3 x 3 x 0.7mm | 0.7mm | 3mm | 5.5 V | +125 °C | - | 2.5 V |
|
RS Stock No.
920-3407
Mfr. Part No.TPS60403DBVT
BrandTexas Instruments
|
SGD0.912
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 |
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RS Stock No.
704-6707
Mfr. Part No.ICL7660SIPAZ
BrandRenesas Electronics
|
SGD2.79
Each
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.
691-0578
Mfr. Part No.SC630ULTRT
BrandSemtech
|
SGD1.792
Each (In a Pack of 5)
units
|
Step Down, Step Up | - | - | Surface Mount | MLPD UT EP | 8 | - | 2 x 2 x 0.55mm | 0.55mm | 2mm | 5.5 V | +85 °C | - | 2.9 V |
|
RS Stock No.
662-4093
Mfr. Part No.TPS60403DBVR
BrandTexas Instruments
|
SGD1.418
Each (In a Pack of 5)
units
|
Inverting | - | - | 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.
169-8352
Mfr. Part No.ICL7660SIPAZ
BrandIntersil
|
SGD2.377
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.
533-3901
Mfr. Part No.LM2623MM/NOPB
BrandTexas Instruments
|
SGD2.12
Each
units
|
- | 2A | - | Surface Mount | MSOP | 8 | - | 3 x 3 x 0.86mm | 0.86mm | 3mm | - | +85 °C | 14 V | - |
|
RS Stock No.
170-8224
Mfr. Part No.ICL7660CBAZA
BrandIntersil
|
SGD2.352
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 |
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RS Stock No.
517-1208
Mfr. Part No.TPS60403DBVT
BrandTexas Instruments
|
SGD1.35
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.
889-5572
Mfr. Part No.MCP1253-33X50I/MS
BrandMicrochip
|
SGD1.729
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 |
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RS Stock No.
422-211
Mfr. Part No.TPS60243DGKT
BrandTexas Instruments
|
SGD1.734
Each (In a Pack of 5)
units
|
Step Up | - | - | Surface Mount | MSOP | 8 | - | 3 x 3 x 0.97mm | 0.97mm | 3mm | 5.5 V | +85 °C | - | 1.8 V |
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