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. 622-8939
Mfr. Part No.MAX662AESA+
TWD246.00
Each
units
Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +85 °C - 4.5 V
RS Stock No. 732-6854
Mfr. Part No.MAX682ESA+
TWD196.00
Each
units
Step Down 300mA 2000 kHz Surface Mount SOIC 8 2.7 → 5.5 V 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +85 °C 5.2 V 2.7 V
RS Stock No. 165-9144
Mfr. Part No.MAX662AESA+
TWD184.20
Each (In a Tube of 100)
units
Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +85 °C - 4.5 V
RS Stock No. 165-9257
Mfr. Part No.MAX682ESA+
TWD137.90
Each (In a Tube of 100)
units
Step Down 300mA 2000 kHz Surface Mount SOIC 8 2.7 → 5.5 V 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +85 °C 5.2 V 2.7 V
RS Stock No. 146-1215
Mfr. Part No.MAX1044CSA+
TWD61.80
Each (In a Tube of 100)
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 10 V +70 °C -1.5 V, 20 V 1.5 V
RS Stock No. 179-1599
Mfr. Part No.TPS60130PWP
TWD108.30
Each (In a Tube of 70)
units
Step Up - - Surface Mount HTSSOP 20 - 6.5 x 4.4 x 1.15mm 1.15mm 6.5mm 5.4 V +85 °C - 2.7 V
RS Stock No. 761-8910
Mfr. Part No.LTC1046IS8#PBF
TWD306.00
Each
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. 681-1102
Mfr. Part No.TC7662ACPA
BrandMicrochip
TWD88.00
Each
units
Inverting 40mA 12 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 18 V +70 °C -3 V 3 V
RS Stock No. 533-3951
Mfr. Part No.LM2662M/NOPB
TWD91.00
Each
units
Inverting, Step Down, Step Up 200mA - Surface Mount SOIC 8 - 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm 5.5 V +85 °C -1.5 V 1.5 V
RS Stock No. 912-6993
Mfr. Part No.TCM828ECT713
BrandMicrochip
TWD13.20
Each (On a Reel of 3000)
units
Voltage 25mA 12 kHz Surface Mount SOT-23 5 1.5 → 5.5 V 3.1 x 1.8 x 1.3mm 1.3mm 3.1mm 5.5 V +85 °C 6 V 1.5 V
RS Stock No. 912-6990
Mfr. Part No.TC7662BEOA
BrandMicrochip
TWD55.80
Each (In a Tube of 100)
units
Inverting 20mA 35 kHz Surface Mount SOIC 8 - 4.9 x 3.91 x 1.42mm 1.42mm 4.9mm 15 V +85 °C - 1.5 V
RS Stock No. 761-9276
Mfr. Part No.LTC1983ES6-5#TRMPBF
TWD145.00
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. 158-4511
Mfr. Part No.ADM8660ANZ
TWD133.80
Each (In a Tube of 50)
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. 704-4482
Mfr. Part No.ICL7660ACPAZ
TWD62.40
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 12 V +70 °C -1.5 V 1.5 V
RS Stock No. 179-1828
Mfr. Part No.TPS60501DGS
TWD53.10
Each (In a Tube of 80)
units
Step Down - - Surface Mount MSOP 10 - 3 x 3 x 1.02mm 1.02mm 3mm 6.5 V +85 °C - 1.8 V
RS Stock No. 622-8894
Mfr. Part No.MAX660CSA+
TWD222.00
Each
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +70 °C -1.5 V, 11 V 1.5 V
RS Stock No. 540-4148
Mfr. Part No.MAX619CSA+
TWD151.00
Each
units
Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 3.6 V +70 °C - 2 V
RS Stock No. 622-9049
Mfr. Part No.MAX865EUA+
TWD85.00
Each
units
Inverting, Step Up - - Surface Mount μMAX 8 - 3.05 x 3.05 x 0.95mm 0.95mm 3.05mm 6 V +85 °C ±12 V 1.5 V
New
RS Stock No. 190-0321
Mfr. Part No.MAX868EUB+
TWD143.20
Each (In a Pack of 5)
units
Inverting 35mA 450 kHz Surface Mount μMAX 10 1.8 → 5.5 V 3.15 x 3.15 x 0.94mm 0.94mm 3.15mm 5.5 V +85 °C -3.6 V 1.8 V
RS Stock No. 165-9399
Mfr. Part No.MAX1595EUA50+
TWD91.90
Each (In a Tube of 50)
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