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
New
RS Stock No. 189-9991
Mfr. Part No.MAX1044EPA+
HK$31.188
Each (In a Pack of 5)
units
Inverting 200µA 5 kHz Through Hole PDIP 8 30 V 9.91 x 7.87 x 4.45mm 4.45mm 9.91mm 200 V +150 °C 10 V -
RS Stock No. 168-4993
Mfr. Part No.LM27761DSGT
HK$9.671
Each (On a Reel of 250)
units
Inverting 250mA 2.3 MHz Surface Mount WSON 8 - 2.1 x 2.1 x 0.75mm 0.75mm 2.1mm 5.5 V +85 °C -5.2 V 2.7 V
RS Stock No. 779-8987
Mfr. Part No.LT1054IS8#PBF
HK$68.05
Each
units
Inverting 100mA 25 kHz Surface Mount SOIC 8 - - 1.498mm 5mm 15 V +100 °C - 3.5 V
RS Stock No. 422-520
Mfr. Part No.TPS60130PWP
HK$19.818
Each (In a Pack of 5)
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. 825-6866
Mfr. Part No.TPS60151DRVT
HK$12.112
Each (In a Pack of 5)
units
Charge Pump 120mA 1.5 MHz Surface Mount SON 6 2.7 → 5.5 V 2.1 x 2.1 x 0.75mm 0.75mm 2.1mm 5.5 V +85 °C 5.2 V 2.7 V
RS Stock No. 412-585
Mfr. Part No.ADM660ARZ
HK$38.486
Each (In a Pack of 5)
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 7 V +85 °C 1.7 V, 14 V 1.5 V
RS Stock No. 155-9363
Mfr. Part No.LTC3226EUD#PBF
HK$37.908
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. 506-1779
Mfr. Part No.LTC3200EMS8#PBF
HK$33.08
Each
units
Step Up - - Surface Mount MSOP 8 - 3 x 3 x 0.86mm 0.86mm 3mm 4.5 V +85 °C 5.5 V 2.7 V
RS Stock No. 165-3331
Mfr. Part No.TC1240ECHTR
BrandMicrochip
HK$5.443
Each (On a Reel of 3000)
units
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
RS Stock No. 165-4689
Mfr. Part No.MCP1252-ADJI/MS
BrandMicrochip
HK$9.01
Each (In a Tube of 100)
units
Step Down, Step Up 120mA 650 kHz Surface Mount MSOP 8 - 3 x 3 x 0.85mm 0.85mm 3mm 5.5 V +85 °C 5.5 V 2 V
RS Stock No. 738-6266
Mfr. Part No.TC7662AEPA
BrandMicrochip
HK$31.37
Each
units
Inverting 40mA 12 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 18 V +85 °C - 3 V
RS Stock No. 165-9579
Mfr. Part No.MAX660EPA+
HK$44.58
Each (In a Tube of 50)
units
Charge Pump 100mA 80 kHz Through Hole PDIP 8 - 9.91 x 7.87 x 4.45mm 4.45mm 4.45mm 5.5 V +85 °C -1.5 V 3 V
RS Stock No. 165-2095
Mfr. Part No.TC7660EOA
BrandMicrochip
HK$4.443
Each (In a Tube of 100)
units
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
RS Stock No. 704-6707
Mfr. Part No.ICL7660SIPAZ
HK$13.91
Each
units
Inverting, Step Up - - Through Hole PDIP 8 - 10.16 x 7.11 x 4.95mm 4.95mm 10.16mm 12 V +85 °C -1.5 V, 22.8 V 1.5 V
RS Stock No. 144-5828
Mfr. Part No.TC7660EPA
BrandMicrochip
HK$4.812
Each (In a Tube of 60)
units
Inverting 20mA 10 kHz Through Hole PDIP 8 - 10.16 x 7.62 x 4.45mm 4.45mm 10.16mm 10 V +85 °C -10 V 1.5 V
RS Stock No. 704-4482
Mfr. Part No.ICL7660ACPAZ
HK$9.78
Each (In a Pack of 5)
units
Inverting, Step Up - - Through Hole PDIP 8 - 10.16 x 7.11 x 4.95mm 4.95mm 10.16mm 12 V +70 °C -1.5 V 1.5 V
RS Stock No. 177-7147
Mfr. Part No.LTC3200EMS8#PBF
HK$23.379
Each (In a Tube of 50)
units
Step Up - - Surface Mount MSOP 8 - 3 x 3 x 0.86mm 0.86mm 3mm 4.5 V +85 °C 5.5 V 2.7 V
RS Stock No. 163-2072
Mfr. Part No.CAT3200HU2-GT3
HK$6.904
Each (On a Reel of 3000)
units
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 Stock No. 769-5416
Mfr. Part No.SP6661EN-L
BrandEXAR
HK$13.19
Each (In a Pack of 2)
units
Inverting, Voltage Doubler 200mA 1250 kHz Surface Mount SOIC 8 5 V 4.9 x 3.9 x 1.65mm 1.65mm 4.9mm 5.3 V +85 °C -5 V, 10 V 1.5 V
RS Stock No. 921-5598
Mfr. Part No.ICL7660ACPAZ
HK$13.82
Each (In a Pack of 5)
units
Inverting, Step Up - - Through Hole PDIP 8 - 10.16 x 7.11 x 4.95mm 4.95mm 10.16mm 12 V +70 °C -1.5 V 1.5 V