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. 921-5608
Mfr. Part No.ICL7660AIBAZA
$3.072
Each (In a Pack of 5)
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 12 V +85 °C -1.5 V 1.5 V
RS Stock No. 709-5232
Mfr. Part No.ADM8660ANZ
$4.13
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. 422-554
Mfr. Part No.TPS60110PWP
$4.61
Each (In a Pack of 5)
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. 165-9520
Mfr. Part No.ICL7660EPA+
$5.049
Each (In a Tube of 50)
units
Inverting, Step Up 20mA 10 kHz Through Hole PDIP 8 - 9.91 x 7.87 x 4.45mm 4.45mm 9.91mm 10 V +85 °C - 1.5 V
RS Stock No. 761-6087
Mfr. Part No.LM828M5/NOPB
$2.22
Each (In a Pack of 5)
units
Charge Pump, Inverting - 28 kHz Surface Mount SOT-23 5 - 2.92 x 1.6 x 1.02mm 1.02mm 2.92mm 5.5 V +85 °C -5.5 V 1.8 V
RS Stock No. 146-1028
Mfr. Part No.MAX865EUA+
$3.443
Each (In a Tube of 50)
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
RS Stock No. 422-211
Mfr. Part No.TPS60243DGKT
$1.744
Each (In a Pack of 5)
units
Step Up - - Surface Mount MSOP 8 - 3 x 3 x 0.97mm 0.97mm 3mm 5.5 V +85 °C - 1.8 V
RS Stock No. 761-9276
Mfr. Part No.LTC1983ES6-5#TRMPBF
$9.27
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. 912-2944
Mfr. Part No.MCP1252-33X50I/MS
BrandMicrochip
$2.027
Each (In a Tube of 100)
units
Step Down/Step Up 150mA 650 kHz Surface Mount MSOP 8 - 3 x 3 x 0.85mm 0.85mm 3mm 5.5 V +85 °C - 2.1 V
RS Stock No. 786-0874
Mfr. Part No.MAX1044EPA+
$5.48
Each (In a Pack of 2)
units
Inverting 200µA 5 kHz Through Hole PDIP 8 30 V 9.91 x 7.87 x 4.45mm 4.45mm 9.91mm 200 V +150 °C 10 V -
RS Stock No. 797-9798
Mfr. Part No.ICL7660EPA+
$7.27
Each (In a Pack of 2)
units
Inverting, Step Up 20mA 10 kHz Through Hole PDIP 8 - 9.91 x 7.87 x 4.45mm 4.45mm 9.91mm 10 V +85 °C - 1.5 V
RS Stock No. 145-7056
Mfr. Part No.TPS60210DGS
$2.893
Each (In a Tube of 80)
units
Step Up - - Surface Mount MSOP 10 - 3 x 3 x 1.02mm 1.02mm 3mm 3.6 V +85 °C - 1.8 V
RS Stock No. 923-1449
Mfr. Part No.ICL7660SIBAZ
$2.486
Each (In a Tube of 98)
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 12 V +85 °C -1.5 V, 22.8 V 1.5 V
RS Stock No. 545-5994
Mfr. Part No.LTC1144CN8#PBF
$11.02
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. 146-0990
Mfr. Part No.MAX881REUB+
$5.412
Each (In a Tube of 50)
units
Inverting - - Surface Mount μMAX 10 - 3.05 x 3.05 x 0.95mm 0.95mm 3.05mm 5.5 V +85 °C -0.5 V 2.5 V
RS Stock No. 662-4090
Mfr. Part No.TPS60402DBVT
$1.97
Each (In a Pack of 5)
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. 165-2095
Mfr. Part No.TC7660EOA
BrandMicrochip
$1.009
Each (In a Tube of 100)
units
Inverting 20mA 10 kHz Surface Mount SOIC 8 - 4.9 x 3.9 x 1.5mm 1.5mm 4.9mm 10 V +85 °C -10 V 1.5 V
RS Stock No. 796-8388
Mfr. Part No.TPS60150DRVT
$2.508
Each (In a Pack of 5)
units
Charge Pump 140mA 1.5 MHz Surface Mount SON 6 - 2.1 x 2.1 x 0.75mm 0.75mm 2.1mm 5.5 V +85 °C 5.2 V 2.7 V
RS Stock No. 917-5778
Mfr. Part No.MP9361DJ-LF-P
$2.618
Each (In a Pack of 5)
units
Charge Pump 110mA 1.6 MHz Surface Mount TSOT-23 6 3.7 V 3 x 1.7 x 0.9mm 0.9mm 3mm 5 V +85 °C 5.2 V 2.8 V
RS Stock No. 540-4687
Mfr. Part No.MAX860ISA+
$6.15
Each
units
Inverting, Step Up 60mA 6 kHz Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +85 °C -1.5 V, 11 V 1.5 V
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