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 Prix 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
N° de stock RS 189-6909
Référence fabricantICL7662CBA+
3,417 €
Each (In a Tube of 100)
Unité
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
N° de stock RS 921-5585
Référence fabricantICL7660SCBAZ
1,542 €
Each (In a Pack of 5)
Unité
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
N° de stock RS 786-9724
Référence fabricantLTC1044CS8#PBF
4,795 €
Each (In a Pack of 2)
Unité
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
N° de stock RS 190-0108
Référence fabricantICL7662CBD+
3,49 €
Each (In a Pack of 5)
Unité
Inverting 20mA 10 kHz Surface Mount SOIC 14 4.5 → 20 V 8.737 x 4.013 x 1.55mm 1.55mm 8.74mm 20 V +70 °C -4.5 V 4.5 V
N° de stock RS 177-7319
Référence fabricantLT1054LCS8#PBF
2,761 €
Each (In a Tube of 100)
Unité
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
N° de stock RS 920-3407
Référence fabricantTPS60403DBVT
0,679 €
Each (On a Reel of 250)
Unité
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
N° de stock RS 774-7872
Référence fabricantTC7660EOA
MarqueMicrochip
0,71 €
Each (In a Bag of 5)
Unité
Inverting 20mA 10 kHz Surface Mount SOIC 8 - 4.9 x 3.9 x 1.5mm 1.5mm 4.9mm 10 V +85 °C -10 V 1.5 V
N° de stock RS 768-1482
Référence fabricantTC1240ECHTR
MarqueMicrochip
0,737 €
Each (In a Pack of 10)
Unité
Voltage Doubler 50mA 125 kHz Surface Mount SOT-23 6 3.25 V 3.1 x 1.75 x 1.3mm 1.3mm 3.1mm 4 V +85 °C 9 V 2.5 V
N° de stock RS 177-7266
Référence fabricantLTC660CS8#PBF
4,135 €
Each (In a Tube of 100)
Unité
Inverting 5µA - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 5.5 V +70 °C -5.5 V 1.5 V
N° de stock RS 923-1449
Référence fabricantICL7660SIBAZ
1,307 €
Each (In a Tube of 98)
Unité
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 12 V +85 °C -1.5 V, 22.8 V 1.5 V
N° de stock RS 921-5591
Référence fabricantICL7660SIBAZ
1,434 €
Each (In a Pack of 5)
Unité
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 12 V +85 °C -1.5 V, 22.8 V 1.5 V