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. 761-9276
Mfr. Part No.LTC1983ES6-5#TRMPBF
R 68.57
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. 919-9465
Mfr. Part No.LTC1983ES6-5#TRMPBF
R 40.945
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. 177-7251
Mfr. Part No.LT1026CS8#PBF
R 50.321
Each (In a Tube of 100)
units
Inverting - - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 10 V +70 °C 18 V 4 V
RS stock no. 761-7970
Mfr. Part No.LT1026CS8#PBF
R 80.09
Each
units
Inverting - - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 10 V +70 °C 18 V 4 V
RS stock no. 761-9645
Mfr. Part No.LTC660CS8#PBF
R 118.94
Each
units
Inverting 5µA - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 5.5 V +70 °C -5.5 V 1.5 V
RS stock no. 177-7266
Mfr. Part No.LTC660CS8#PBF
R 66.957
Each (In a Tube of 100)
units
Inverting 5µA - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 5.5 V +70 °C -5.5 V 1.5 V
RS stock no. 155-7564
Mfr. Part No.LTC3203EDD-1#PBF
R 41.039
Each (In a Tube of 121)
units
Step Up 500mA 1 MHz Surface Mount DFN 10 2.7 → 5.5 V 3 x 3 x 0.7mm 0.7mm 3mm 5.5 V +85 °C 4.5 V 2.7 V
RS stock no. 884-7002
Mfr. Part No.LTC3245IDE#PBF
R 109.435
Each (In a Pack of 2)
units
Buck Boost 250mA 500 kHz Surface Mount DFN 12 12 V 4 x 3 x 0.7mm 0.7mm 4mm 38 V +125 °C 5 V 2.7 V
RS stock no. 158-0362
Mfr. Part No.LTC3245IDE#PBF
R 74.194
Each (In a Tube of 91)
units
Buck Boost 250mA 500 kHz Surface Mount DFN 12 12 V 4 x 3 x 0.7mm 0.7mm 4mm 38 V +125 °C 5 V 2.7 V
RS stock no. 822-6792
Mfr. Part No.LTC3203EDD-1#PBF
R 43.32
Each (In a Pack of 2)
units
Step Up 500mA 1 MHz Surface Mount DFN 10 2.7 → 5.5 V 3 x 3 x 0.7mm 0.7mm 3mm 5.5 V +85 °C 4.5 V 2.7 V
RS stock no. 709-5232
Mfr. Part No.ADM8660ANZ
R 60.39
Each
units
Inverting - - Through Hole PDIP 8 - 9.27 x 7.24 x 3.43mm 3.43mm 9.27mm 7 V +85 °C -1.5 V 1.5 V
RS stock no. 919-9373
Mfr. Part No.LTC1046IS8#PBF
R 79.279
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. 858-0677
Mfr. Part No.LTC3226EUD#PBF
R 93.11
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. 822-5888
Mfr. Part No.LT1054LCS8#PBF
R 66.28
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. 177-7147
Mfr. Part No.LTC3200EMS8#PBF
R 55.321
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. 545-5988
Mfr. Part No.LTC1044CN8#PBF
R 71.25
Each
units
Inverting, Step Down, Step Up - - Through Hole PDIP 8 - 10.16 x 6.48 x 3.3mm 3.3mm 10.16mm 9 V +85 °C -1.5 V, 4.5 V 1.5 V
RS stock no. 177-7309
Mfr. Part No.LTC1044AIS8#PBF
R 56.864
Each (In a Tube of 100)
units
Step Up 200µA 5 kHz Surface Mount SOIC 8 5 V 5.004 x 3.988 x 1.498mm 1.498mm 5mm 12 V +85 °C 3.5 V, 5 V 1.5 V
RS stock no. 145-1324
Mfr. Part No.LTC3260EMSE#PBF
R 78.434
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. 145-5866
Mfr. Part No.LTC3261EMSE#PBF
R 67.663
Each (In a Tube of 37)
units
Inverting 100mA 550 kHz Surface Mount MSOP 12 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. 155-7582
Mfr. Part No.LT1054IN8#PBF
R 79.055
Each (In a Tube of 50)
units
Bi-Polar, Monolithic 100mA 40 kHz Through Hole PDIP 8 3.5 → 15 V 10.16 x 6.477 x 3.302mm 3.302mm 10.16mm 15 V +100 °C 15 V 3.5 V