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 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
RS Stock No. 121-8407
Mfr. Part No.LT1054CP
TWD92.90
Each (In a Tube of 50)
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. 526-763
Mfr. Part No.LT1054CP
TWD109.00
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. 162-8195
Mfr. Part No.LM2660MM/NOPB
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. 824-6778
Mfr. Part No.LM2660MM/NOPB
TWD55.40
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
RS Stock No. 460-588
Mfr. Part No.MAX660M/NOPB
TWD65.60
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. 121-8323
Mfr. Part No.MAX660M/NOPB
TWD55.90
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. 155-9363
Mfr. Part No.LTC3226EUD#PBF
TWD146.70
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
RS Stock No. 858-0677
Mfr. Part No.LTC3226EUD#PBF
TWD237.00
Each (In a Pack of 2)
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
RS Stock No. 145-6522
Mfr. Part No.TPS60401DBVT
TWD21.50
Each (On a Reel of 250)
units
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
RS Stock No. 517-1191
Mfr. Part No.TPS60401DBVT
TWD37.00
Each (In a Pack of 5)
units
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
RS Stock No. 922-2748
Mfr. Part No.LT1054IP
TWD98.10
Each (In a Tube of 50)
units
Inverting, Step Up - - Through Hole PDIP 8 - 9.81 x 6.35 x 4.57mm 4.57mm 9.81mm 15 V +85 °C - 3.5 V
RS Stock No. 823-0852
Mfr. Part No.TCM828ECT713
BrandMicrochip
TWD10.60
Each (In a Pack of 20)
units
Voltage 25mA 12 kHz Surface Mount SOT-23 5 1.5 → 5.5 V 3.1 x 1.8 x 1.3mm 1.3mm 3.1mm 5.5 V +85 °C 6 V 1.5 V
RS Stock No. 825-6860
Mfr. Part No.TPS60313DGS
TWD76.20
Each (In a Pack of 5)
units
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
RS Stock No. 145-6645
Mfr. Part No.TPS60313DGS
TWD64.90
Each (In a Tube of 80)
units
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
RS Stock No. 786-9755
Mfr. Part No.LTC1046CS8#PBF
TWD258.00
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. 920-3624
Mfr. Part No.LM2662M/NOPB
TWD77.50
Each (In a Tube of 95)
units
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. 704-7019
Mfr. Part No.ICL7660CBAZA
TWD65.20
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
RS Stock No. 919-9373
Mfr. Part No.LTC1046IS8#PBF
TWD181.50
Each (In a Tube of 100)
units
Inverting 50µA - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 6 V +85 °C - 1.5 V
RS Stock No. 912-6990
Mfr. Part No.TC7662BEOA
BrandMicrochip
TWD58.70
Each (In a Tube of 100)
units
Inverting 20mA 35 kHz Surface Mount SOIC 8 - 4.9 x 3.91 x 1.42mm 1.42mm 4.9mm 15 V +85 °C - 1.5 V
RS Stock No. 170-8224
Mfr. Part No.ICL7660CBAZA
BrandIntersil
TWD51.70
Each (In a Tube of 98)
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