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
|
SGD10.53
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
BrandAnalog Devices
|
SGD13.557
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
|
SGD1.21
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.
774-7898
Mfr. Part No.TC962EPA
BrandMicrochip
|
SGD4.455
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 |
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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 | - |
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RS Stock No.
165-2030
Mfr. Part No.TC962EPA
BrandMicrochip
|
SGD3.723
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.
121-8323
Mfr. Part No.MAX660M/NOPB
BrandTexas Instruments
|
SGD2.55
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 |
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RS Stock No.
460-588
Mfr. Part No.MAX660M/NOPB
BrandTexas Instruments
|
SGD2.83
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 |
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RS Stock No.
821-1236
Mfr. Part No.TC962CPA
BrandMicrochip
|
SGD3.65
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 |
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RS Stock No.
920-3615
Mfr. Part No.LM2623MM/NOPB
BrandTexas Instruments
|
SGD1.086
Each (On a Reel of 1000)
units
|
- | 2A | - | Surface Mount | MSOP | 8 | - | 3 x 3 x 0.86mm | 0.86mm | 3mm | - | +85 °C | 14 V | - |
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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 |
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RS Stock No.
162-4400
Mfr. Part No.TPS60243DGKT
BrandTexas Instruments
|
SGD1.69
Each (On a Reel of 250)
units
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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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RS Stock No.
403-604
Mfr. Part No.MCP1253-33X50I/MS
BrandMicrochip
|
SGD2.14
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 | - | 2.1 V |
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RS Stock No.
691-0578
Mfr. Part No.SC630ULTRT
BrandSemtech
|
SGD2.37
Each (In a Pack of 5)
units
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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 |
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RS Stock No.
145-6317
Mfr. Part No.LTC3261IMSE#PBF
BrandAnalog Devices
|
SGD7.954
Each (In a Tube of 37)
units
|
Inverting | 100mA | 550 kHz | Surface Mount | MSOP | 12 | 4.5 → 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.
921-5585
Mfr. Part No.ICL7660SCBAZ
BrandRenesas Electronics
|
SGD2.62
Each (In a Pack of 5)
units
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Inverting, Step Up | - | - | Surface Mount | SOIC | 8 | - | 5 x 4 x 1.5mm | 1.5mm | 5mm | 12 V | +70 °C | -1.5 V, 22.8 V | 1.5 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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RS Stock No.
704-6707
Mfr. Part No.ICL7660SIPAZ
BrandRenesas Electronics
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SGD2.79
Each
units
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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 |
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RS Stock No.
155-9363
Mfr. Part No.LTC3226EUD#PBF
BrandAnalog Devices
|
SGD5.502
Each (In a Tube of 121)
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 |
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RS Stock No.
517-1208
Mfr. Part No.TPS60403DBVT
BrandTexas Instruments
|
SGD1.884
Each (In a Pack of 5)
units
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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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