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. 668-9191
Mfr. Part No.ICL7660ACBAZA
MYR7.12
Each (In a Pack of 5)
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 12 V +70 °C -1.5 V 1.5 V
RS Stock No. 177-7116
Mfr. Part No.ICL7660ACBAZA
MYR6.05
Each (In a Tube of 98)
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 12 V +70 °C -1.5 V 1.5 V
RS Stock No. 851-6768
Mfr. Part No.LTC3260EMSE#PBF
MYR34.29
Each
units
Inverting 100mA 550 kHz Surface Mount MSOP 16 4.5 to 32 V 4.039 x 3 x 0.86mm 0.86mm 4.04mm 32 V +150 °C -32 V 4.5 V
RS Stock No. 145-1324
Mfr. Part No.LTC3260EMSE#PBF
MYR21.366
Each (In a Tube of 37)
units
Inverting 100mA 550 kHz Surface Mount MSOP 16 4.5 → 32 V 4.039 x 3 x 0.86mm 0.86mm 4.04mm 32 V +150 °C -32 V 4.5 V
RS Stock No. 517-1191
Mfr. Part No.TPS60401DBVT
MYR4.55
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. 145-6522
Mfr. Part No.TPS60401DBVT
MYR2.611
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. 102-5723
Mfr. Part No.LMC7660IM/NOPB
MYR4.716
Each (In a Tube of 95)
units
Inverting - - Surface Mount SOIC 8 - 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm 10 V +85 °C -1.5 V 1.5 V
RS Stock No. 536-0212
Mfr. Part No.LMC7660IM/NOPB
MYR5.544
Each (In a Pack of 5)
units
Inverting - - Surface Mount SOIC 8 - 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm 10 V +85 °C -1.5 V 1.5 V
RS Stock No. 822-5954
Mfr. Part No.LTC3240EDC-3.3#TRMPBF
MYR21.10
Each (In a Pack of 2)
units
Step Down 150mA 1.8 MHz Surface Mount DFN 6 1.8 → 5.5 V 2 x 2 x 0.7mm 0.7mm 2mm 5.5 V +85 °C 3.3 V 1.8 V
RS Stock No. 155-7516
Mfr. Part No.LTC3240EDC-3.3#TRMPBF
MYR12.015
Each (On a Reel of 500)
units
Step Down 150mA 1.8 MHz Surface Mount DFN 6 1.8 → 5.5 V 2 x 2 x 0.7mm 0.7mm 2mm 5.5 V +85 °C 3.3 V 1.8 V
RS Stock No. 761-8917
Mfr. Part No.LTC1044ACS8#PBF
MYR23.54
Each
units
Inverting, Step Up 20µA - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 12 V +70 °C - 1.5 V
RS Stock No. 177-7319
Mfr. Part No.LT1054LCS8#PBF
MYR28.05
Each (In a Tube of 100)
units
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
RS Stock No. 526-975
Mfr. Part No.TPS60400DBVT
MYR4.508
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. 822-5888
Mfr. Part No.LT1054LCS8#PBF
MYR20.185
Each (In a Pack of 2)
units
Inverting, Step Up 125mA 35 kHz Surface Mount SOIC 8 3.5 to 7 V 5.004 x 3.988 x 1.498mm 1.498mm 5mm 7 V +100 °C - 3.5 V
RS Stock No. 921-5551
Mfr. Part No.ICL7660CPAZ
MYR7.198
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 10 V +70 °C -1.5 V 1.5 V
RS Stock No. 761-9276
Mfr. Part No.LTC1983ES6-5#TRMPBF
MYR20.90
Each
units
Charge Pump, Regulated 125mA - Surface Mount SOT-23 6 - 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 5.5 V +85 °C -5.2 V 3 V
RS Stock No. 177-7308
Mfr. Part No.LTC1044CS8#PBF
MYR29.755
Each (In a Tube of 100)
units
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
RS Stock No. 919-9465
Mfr. Part No.LTC1983ES6-5#TRMPBF
MYR12.584
Each (On a Reel of 500)
units
Charge Pump, Regulated 125mA - Surface Mount SOT-23 6 - 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 5.5 V +85 °C -5.2 V 3 V
RS Stock No. 145-6799
Mfr. Part No.LT1054CS8#PBF
MYR21.80
Each (In a Tube of 100)
units
Inverting 100mA 25 kHz Surface Mount SOIC 8 - - 1.498mm 5mm 15 V +100 °C - 3.5 V
RS Stock No. 779-8984
Mfr. Part No.LT1054CS8#PBF
MYR28.215
Each (In a Pack of 2)
units
Inverting 100mA 25 kHz Surface Mount SOIC 8 - - 1.498mm 5mm 15 V +100 °C - 3.5 V