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. 177-7310
Mfr. Part No.LTC1046CS8#PBF
HK$51.992
Each (In a Tube of 100)
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. 761-9383
Mfr. Part No.LTC3200ES6-5#TRMPBF
HK$32.87
Each
units
Charge Pump, Regulated 150mA 2000 kHz Surface Mount SOT-23 6 - 3.1 x 1.75 x 1.3mm 1.3mm 3.1mm 4.5 V +85 °C 5.2 V 2.7 V
RS Stock No. 919-9483
Mfr. Part No.LTC3200ES6-5#TRMPBF
HK$22.228
Each (On a Reel of 500)
units
Charge Pump, Regulated 150mA 2000 kHz Surface Mount SOT-23 6 - 3.1 x 1.75 x 1.3mm 1.3mm 3.1mm 4.5 V +85 °C 5.2 V 2.7 V
RS Stock No. 786-9755
Mfr. Part No.LTC1046CS8#PBF
HK$56.34
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. 858-0876
Mfr. Part No.LTC1983ES6-3#TRMPBF
HK$32.065
Each (In a Pack of 2)
units
Charge Pump 100mA 900 kHz Surface Mount SOT-23 6 - 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 5.5 V +85 °C -3.12 V 2.3 V
RS Stock No. 156-5692
Mfr. Part No.LTC1983ES6-3#TRMPBF
HK$24.327
Each (On a Reel of 500)
units
Charge Pump 100mA 900 kHz Surface Mount SOT-23 6 - 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 5.5 V +85 °C -3.12 V 2.3 V
RS Stock No. 850-7931
Mfr. Part No.ADM8828ARTZ-REEL7
HK$11.264
Each (In a Pack of 5)
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. 919-9465
Mfr. Part No.LTC1983ES6-5#TRMPBF
HK$23.116
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. 145-1324
Mfr. Part No.LTC3260EMSE#PBF
HK$46.244
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. 851-6768
Mfr. Part No.LTC3260EMSE#PBF
HK$66.42
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. 155-7582
Mfr. Part No.LT1054IN8#PBF
HK$50.196
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
RS Stock No. 160-9936
Mfr. Part No.ADM8828ARTZ-REEL7
HK$11.877
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. 761-9276
Mfr. Part No.LTC1983ES6-5#TRMPBF
HK$38.24
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. 822-9925
Mfr. Part No.LT1054IN8#PBF
HK$71.55
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
RS Stock No. 177-7308
Mfr. Part No.LTC1044CS8#PBF
HK$36.914
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. 177-7309
Mfr. Part No.LTC1044AIS8#PBF
HK$37.422
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. 145-6799
Mfr. Part No.LT1054CS8#PBF
HK$38.425
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. 822-6792
Mfr. Part No.LTC3203EDD-1#PBF
HK$31.60
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. 177-7319
Mfr. Part No.LT1054LCS8#PBF
HK$31.045
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. 822-5888
Mfr. Part No.LT1054LCS8#PBF
HK$32.165
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