Charge Pumps

Charge pumps are DC to DC converters that are often needed in designs requiring more than one dc supply voltage. Its 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. Theres 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. 858-0876
Mfr. Part No.LTC1983ES6-3#TRMPBF
HK$38.61
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. 851-6768
Mfr. Part No.LTC3260EMSE#PBF
HK$69.72
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. 822-9925
Mfr. Part No.LT1054IN8#PBF
HK$78.83
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. 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. 660-4447
Mfr. Part No.REG71055DDCT
HK$12.07
Each
units
Step Down/Step Up - - Surface Mount SOT-23 6 - 2.9 x 1.6 x 0.87mm 0.87mm 2.9mm 5.5 V +85 °C - 1.8 V
RS Stock No. 155-7582
Mfr. Part No.LT1054IN8#PBF
HK$52.362
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. 177-7264
Mfr. Part No.LTC1044ACS8#PBF
HK$56.571
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. 504-4976
Mfr. Part No.LM2665M6/NOPB
HK$6.421
Each (In a Pack of 10)
units
Step Up - - Surface Mount SOT-23 6 - 2.92 x 1.6 x 1.02mm 1.02mm 2.92mm 5.5 V +85 °C 11 V 2.5 V
RS Stock No. 121-6502
Mfr. Part No.MAX1720EUTG
HK$2.13
Each (On a Reel of 3000)
units
Charge Pump, Inverting 100mA 21 kHz Surface Mount TSOP 6 1.15 → 6 V 3.1 x 1.7 x 1mm 1mm 3.1mm 6 V +85 °C 0.3 V 1.5 V
RS Stock No. 144-5828
Mfr. Part No.TC7660EPA
BrandMicrochip
HK$5.537
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. 761-8945
Mfr. Part No.LTC1144IS8#PBF
HK$55.31
Each
units
Charge Pump, Regulated 4µA - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 18 V +85 °C -18 V 2 V
RS Stock No. 732-7646
Mfr. Part No.ICL7662EBA+
HK$40.13
Each
units
Inverting 20mA 10 kHz Surface Mount SOIC 8 4.5 to 20 V 8.737 x 4.013 x 1.55mm 1.55mm 8.74mm 20 V +85 °C -4.5 V 4.5 V
RS Stock No. 159-7436
Mfr. Part No.TC7660SEPA
BrandMicrochip
HK$6.292
Each (In a Tube of 60)
units
Inverting 20mA 45 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 12 V +85 °C -12 V 1.5 V
RS Stock No. 146-1138
Mfr. Part No.ICL7660CPA+
HK$16.356
Each (In a Tube of 50)
units
Inverting, Step Up 225µA 10 kHz Through Hole PDIP 8 - 9.91 x 7.87 x 4.45mm 4.45mm 9.91mm 10 V +70 °C -1.5 V, 20 V 1.5 V
RS Stock No. 772-8792
Mfr. Part No.MCP1259-E/MF
BrandMicrochip
HK$13.208
Each (In a Tube of 5)
units
Charge Pump 100mA 650 kHz Surface Mount DFN 10 - 3.15 x 3.15 x 0.95mm 0.95mm 3.15mm 3.6 V +125 °C 3.3 V 1.8 V
RS Stock No. 545-5988
Mfr. Part No.LTC1044CN8#PBF
HK$34.10
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. 177-7265
Mfr. Part No.LTC1144IS8#PBF
HK$49.767
Each (In a Tube of 100)
units
Charge Pump, Regulated 4µA - Surface Mount SOIC 8 - 5.004 x 3.988 x 1.752mm 1.752mm 5mm 18 V +85 °C -18 V 2 V
RS Stock No. 786-0925
Mfr. Part No.MAX1595EUA50+
HK$31.06
Each (In a Pack of 2)
units
Step Down, Step Up 125mA 1.15 MHz Surface Mount μMAX 8 - 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 5.5 V +85 °C 5.15 V 1.8 V
RS Stock No. 145-6566
Mfr. Part No.TPS60402DBVT
HK$6.409
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. 774-7882
Mfr. Part No.TC7660SEPA
BrandMicrochip
HK$7.592
Each (In a Bag of 5)
units
Inverting 20mA 45 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 12 V +85 °C -12 V 1.5 V
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