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
|
SGD9.79
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.
774-7898
Mfr. Part No.TC962EPA
BrandMicrochip
|
SGD3.74
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.
165-2030
Mfr. Part No.TC962EPA
BrandMicrochip
|
SGD2.48
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.
207-0297
Mfr. Part No.TC7660CPA
BrandMicrochip
|
SGD1.02
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.
872-2464
Mfr. Part No.TC7660CPA
BrandMicrochip
|
SGD0.755
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.
622-8917
Mfr. Part No.MAX662ACSA+
BrandMaxim Integrated
|
HK$1,052.35
Each
units
|
Step Up | - | - | Surface Mount | SOIC | 8 | - | 5 x 4 x 1.5mm | 1.5mm | 5mm | 5.5 V | +70 °C | - | 4.5 V |
|
RS Stock No.
121-8323
Mfr. Part No.MAX660M/NOPB
BrandTexas Instruments
|
SGD1,422.78
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.
732-7135
Mfr. Part No.MAX868EUB+
BrandMaxim Integrated
|
SGD6.81
Each
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.
146-1214
Mfr. Part No.ICL7662CBA+
BrandMaxim Integrated
|
SGD5.034
Each (In a Tube of 100)
units
|
Inverting, Step Up | - | - | Surface Mount | SOIC | 8 | - | 5 x 4 x 1.5mm | 1.5mm | 5mm | 20 V | +70 °C | -4.5 V | 4.5 V |
|
|
RS Stock No.
460-588
Mfr. Part No.MAX660M/NOPB
BrandTexas Instruments
|
SGD2.508
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.
165-9143
Mfr. Part No.MAX662ACSA+
BrandMaxim Integrated
|
SGD4.36
Each (In a Tube of 100)
units
|
Step Up | - | - | Surface Mount | SOIC | 8 | - | 5 x 4 x 1.5mm | 1.5mm | 5mm | 5.5 V | +70 °C | - | 4.5 V |
|
|
RS Stock No.
165-9179
Mfr. Part No.MAX868EUB+
BrandMaxim Integrated
|
SGD3.18
Each (In a Tube of 50)
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.
622-8743
Mfr. Part No.ICL7662CBA+
BrandMaxim Integrated
|
SGD5.49
Each
units
|
Inverting, Step Up | - | - | Surface Mount | SOIC | 8 | - | 5 x 4 x 1.5mm | 1.5mm | 5mm | 20 V | +70 °C | -4.5 V | 4.5 V |
|
RS Stock No.
821-1236
Mfr. Part No.TC962CPA
BrandMicrochip
|
SGD3.151
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.
165-9076
Mfr. Part No.MAX662ACPA+
BrandMaxim Integrated
|
SGD4.34
Each (In a Tube of 50)
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.
800-9866
Mfr. Part No.CAT3200HU2-GT3
BrandON Semiconductor
|
SGD2.358
Each (In a Pack of 5)
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 |
|
RS Stock No.
165-9505
Mfr. Part No.MAX889RESA+
BrandMaxim Integrated
|
SGD4.51
Each (In a Tube of 100)
units
|
Inverting | 200mA | 0.62 MHz | Surface Mount | SOIC | 8 | - | 5 x 4 x 1.5mm | 1.5mm | 5mm | 5.5 V | +85 °C | -5.5 V | 2.7 V |
|
RS Stock No.
662-4093
Mfr. Part No.TPS60403DBVR
BrandTexas Instruments
|
SGD1.928
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.
921-5866
Mfr. Part No.ICL7660CBAZA
BrandRenesas Electronics
|
SGD2.42
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 |
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