Charge Pumps

Charge pumps are DC to DC converters that are often needed in designs requiring more than one dc supply voltage. Its 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. Theres 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
TWD81.80
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
TWD89.40
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
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
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. 460-588
Mfr. Part No.MAX660M/NOPB
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. 121-8323
Mfr. Part No.MAX660M/NOPB
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
RS Stock No. 858-0677
Mfr. Part No.LTC3226EUD#PBF
TWD188.50
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
TWD23.20
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. 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. 517-1191
Mfr. Part No.TPS60401DBVT
TWD27.20
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. 121-6502
Mfr. Part No.MAX1720EUTG
TWD8.30
Each (On a Reel of 3000)
units
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 Stock No. 922-2748
Mfr. Part No.LT1054IP
TWD58.50
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. 146-1040
Mfr. Part No.ICL7662EPA+
TWD130.50
Each (In a Tube of 50)
units
Inverting 20mA 10 kHz Through Hole PDIP 8 4.5 → 20 V 10.033 x 6.35 x 3.302mm 3.302mm 10.03mm 20 V +85 °C -4.5 V 4.5 V
RS Stock No. 920-3624
Mfr. Part No.LM2662M/NOPB
TWD52.70
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. 732-6854
Mfr. Part No.MAX682ESA+
TWD196.00
Each
units
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
RS Stock No. 786-9755
Mfr. Part No.LTC1046CS8#PBF
TWD210.00
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. 912-6993
Mfr. Part No.TCM828ECT713
BrandMicrochip
TWD8.20
Each (On a Reel of 3000)
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. 179-1599
Mfr. Part No.TPS60130PWP
TWD108.30
Each (In a Tube of 70)
units
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
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. 622-8759
Mfr. Part No.MAX1044CSA+
TWD113.00
Each
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 10 V +70 °C -1.5 V, 20 V 1.5 V