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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Omschrijving Prijs 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
RS-stocknr. 122-0078
FabrikantnummerNCP1729SN35T1G
FabrikantON Semiconductor
€ 0,349
Each (On a Reel of 3000)
Aantal stuks
Inverting 100mA 35 kHz Surface Mount TSOP 6 - 3 x 1.5 x 0.94mm 0.94mm 3mm 5.5 V +150 °C -1.15 V 1.15 V
RS-stocknr. 806-2447
FabrikantnummerMAX1720EUTG
FabrikantON Semiconductor
€ 0,573
Each (In a Pack of 20)
Aantal stuks
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
RS-stocknr. 121-6502
FabrikantnummerMAX1720EUTG
FabrikantON Semiconductor
€ 0,221
Each (On a Reel of 3000)
Aantal stuks
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
RS-stocknr. 464-186
FabrikantnummerNCP1729SN35T1G
FabrikantON Semiconductor
€ 0,852
Each (In a Pack of 5)
Aantal stuks
Inverting 100mA 35 kHz Surface Mount TSOP 6 - 3 x 1.5 x 0.94mm 0.94mm 3mm 5.5 V +150 °C -1.15 V 1.15 V
RS-stocknr. 800-9866
FabrikantnummerCAT3200HU2-GT3
FabrikantON Semiconductor
€ 1,472
Each (In a Pack of 5)
Aantal stuks
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-stocknr. 163-2072
FabrikantnummerCAT3200HU2-GT3
FabrikantON Semiconductor
€ 0,694
Each (On a Reel of 3000)
Aantal stuks
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