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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Filters
| 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.
121-8407
Mfr. Part No.LT1054CP
BrandTexas Instruments
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TWD27.72
Each (In a Tube of 50)
units
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Inverting, Step Up | - | - | Through Hole | PDIP | 8 | - | 9.81 x 6.35 x 4.57mm | 4.57mm | 9.81mm | 15 V | +70 °C | - | 3.5 V |
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RS Stock No.
526-763
Mfr. Part No.LT1054CP
BrandTexas Instruments
|
TWD14.35
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 | +70 °C | - | 3.5 V |
|
RS Stock No.
824-6778
Mfr. Part No.LM2660MM/NOPB
BrandTexas Instruments
|
TWD26.60
Each (In a Pack of 5)
units
|
Inverting | 100mA | 80 kHz | Surface Mount | VSSOP | 8 | 1.5 → 5.5 V | 3.1 x 3.1 x 0.95mm | 0.95mm | 3.1mm | 5.5 V | +85 °C | 5 V | 1.5 V |
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RS Stock No.
162-8195
Mfr. Part No.LM2660MM/NOPB
BrandTexas Instruments
|
TWD25.30
Each (On a Reel of 1000)
units
|
Inverting | 100mA | 80 kHz | Surface Mount | VSSOP | 8 | 1.5 → 5.5 V | 3.1 x 3.1 x 0.95mm | 0.95mm | 3.1mm | 5.5 V | +85 °C | 5 V | 1.5 V |
|
RS Stock No.
121-8323
Mfr. Part No.MAX660M/NOPB
BrandTexas Instruments
|
TWD44.20
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
|
TWD64.40
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.
145-6522
Mfr. Part No.TPS60401DBVT
BrandTexas Instruments
|
TWD23.20
Each (On a Reel of 250)
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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RS Stock No.
155-9363
Mfr. Part No.LTC3226EUD#PBF
BrandAnalog Devices
|
TWD146.70
Each (In a Tube of 121)
units
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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.
517-1191
Mfr. Part No.TPS60401DBVT
BrandTexas Instruments
|
TWD27.20
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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RS Stock No.
858-0677
Mfr. Part No.LTC3226EUD#PBF
BrandAnalog Devices
|
TWD188.50
Each (In a Pack of 2)
units
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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.
825-6860
Mfr. Part No.TPS60313DGS
BrandTexas Instruments
|
TWD67.40
Each (In a Pack of 5)
units
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Step Up | 40mA | 900 kHz | Surface Mount | MSOP | 10 | 0.9 → 18 V | 3.1 x 3.1 x 0.95mm | 0.95mm | 3.1mm | 18 V | +125 °C | 3.27 V | 0.9 V |
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RS Stock No.
170-8224
Mfr. Part No.ICL7660CBAZA
BrandIntersil
|
TWD48.50
Each (In a Tube of 98)
units
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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.
102-5723
Mfr. Part No.LMC7660IM/NOPB
BrandTexas Instruments
|
TWD20.10
Each (In a Tube of 95)
units
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Inverting | - | - | Surface Mount | SOIC | 8 | - | 4.9 x 3.9 x 1.45mm | 1.45mm | 4.9mm | 10 V | +85 °C | -1.5 V | 1.5 V |
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RS Stock No.
920-3624
Mfr. Part No.LM2662M/NOPB
BrandTexas Instruments
|
TWD52.70
Each (In a Tube of 95)
units
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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.
681-1102
Mfr. Part No.TC7662ACPA
BrandMicrochip
|
TWD76.00
Each
units
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Inverting | 40mA | 12 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.
121-6502
Mfr. Part No.MAX1720EUTG
BrandON Semiconductor
|
TWD8.30
Each (On a Reel of 3000)
units
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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 |
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RS Stock No.
919-9373
Mfr. Part No.LTC1046IS8#PBF
BrandAnalog Devices
|
TWD181.50
Each (In a Tube of 100)
units
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Inverting | 50µA | - | Surface Mount | SOIC | 8 | - | 5.004 x 3.988 x 1.752mm | 1.752mm | 5mm | 6 V | +85 °C | - | 1.5 V |
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RS Stock No.
177-7310
Mfr. Part No.LTC1046CS8#PBF
BrandAnalog Devices
|
TWD201.20
Each (In a Tube of 100)
units
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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 |
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RS Stock No.
179-1599
Mfr. Part No.TPS60130PWP
BrandTexas Instruments
|
TWD108.30
Each (In a Tube of 70)
units
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Step Up | - | - | Surface Mount | HTSSOP | 20 | - | 6.5 x 4.4 x 1.15mm | 1.15mm | 6.5mm | 5.4 V | +85 °C | - | 2.7 V |
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RS Stock No.
732-6854
Mfr. Part No.MAX682ESA+
BrandMaxim Integrated
|
TWD196.00
Each
units
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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 |
