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. 545-5994
Mfr. Part No.LTC1144CN8#PBF
PHP230.94
Each
units
Step Down - - Through Hole PDIP 8 - 10.16 x 6.48 x 3.3mm 3.3mm 10.16mm 18 V +70 °C -2 V 2 V
RS Stock No. 153-3477
Mfr. Part No.LTC1144CN8#PBF
PHP193.705
Each (In a Tube of 50)
units
Step Down - - Through Hole PDIP 8 - 10.16 x 6.48 x 3.3mm 3.3mm 10.16mm - +70 °C -2 V -
RS Stock No. 412-585
Mfr. Part No.ADM660ARZ
PHP199.474
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. 177-7233
Mfr. Part No.LTC1144CS8#PBF
PHP371.142
Each (In a Tube of 100)
units
Step Down - - Surface Mount SOIC 8 - 5 x 3.99 x 1.48mm 1.48mm 5mm 18 V +70 °C -2 V 2 V
RS Stock No. 538-4072
Mfr. Part No.ADM660ANZ
PHP241.38
Each
units
Inverting, Step Up - - Through Hole PDIP 8 - 9.27 x 7.24 x 3.43mm 3.43mm 9.27mm 7 V +85 °C 1.7 V, 14 V 1.5 V
RS Stock No. 145-5703
Mfr. Part No.ADM660ANZ
PHP170.332
Each (In a Tube of 50)
units
Inverting, Step Up - - Through Hole PDIP 8 - 9.27 x 7.24 x 3.43mm 3.43mm 9.27mm 7 V +85 °C 1.7 V, 14 V 1.5 V
RS Stock No. 545-6161
Mfr. Part No.LTC1144CS8#PBF
PHP230.63
Each
units
Step Down - - Surface Mount SOIC 8 - 5 x 3.99 x 1.48mm 1.48mm 5mm 18 V +70 °C -2 V 2 V
RS Stock No. 912-7211
Mfr. Part No.ADM660ARZ
PHP175.647
Each (In a Tube of 98)
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. 160-9936
Mfr. Part No.ADM8828ARTZ-REEL7
PHP73.723
Each (On a Reel of 3000)
units
Voltage 50mA 190 kHz Surface Mount SOT-23 6 - 3.1 x 1.8 x 1.3mm 1.3mm 3.1mm 5.5 V +85 °C -5.5 V 1.5 V
RS Stock No. 177-7251
Mfr. Part No.LT1026CS8#PBF
PHP344.331
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. 851-6752
Mfr. Part No.LTC3261EMSE#PBF
PHP355.86
Each
units
Inverting 100mA 550 kHz Surface Mount MSOP 12 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. 145-6358
Mfr. Part No.LTC1044CN8#PBF
PHP130.043
Each (In a Tube of 50)
units
Inverting, Step Down, Step Up - - Through Hole PDIP 8 - 10.16 x 6.48 x 3.3mm 3.3mm 10.16mm - +85 °C -1.5 V, 4.5 V -
RS Stock No. 155-7564
Mfr. Part No.LTC3203EDD-1#PBF
PHP159.637
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. 177-7270
Mfr. Part No.LT1054IS8#PBF
PHP688.374
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. 145-1324
Mfr. Part No.LTC3260EMSE#PBF
PHP287.042
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. 709-5241
Mfr. Part No.ADM8660ARZ
PHP211.68
Each
units
Inverting - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 7 V +85 °C -1.5 V 1.5 V
RS Stock No. 145-6799
Mfr. Part No.LT1054CS8#PBF
PHP238.322
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. 177-7266
Mfr. Part No.LTC660CS8#PBF
PHP419.976
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. 177-7264
Mfr. Part No.LTC1044ACS8#PBF
PHP358.677
Each (In a Tube of 100)
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. 822-9925
Mfr. Part No.LT1054IN8#PBF
PHP401.02
Each
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