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. 923-1402
Mfr. Part No.ICL7660CBAZ
MYR5.685
Each (In a Tube of 98)
units
Inverting, Step Up - - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 10 V +70 °C -1.5 V 1.5 V
RS Stock No. 850-7931
Mfr. Part No.ADM8828ARTZ-REEL7
MYR8.062
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. 158-4513
Mfr. Part No.ADM8660ARZ
MYR13.21
Each (In a Tube of 98)
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. 403-604
Mfr. Part No.MCP1253-33X50I/MS
BrandMicrochip
MYR5.77
Each (In a Pack of 5)
units
Step Down/Step Up 120mA 1 MHz Surface Mount MSOP 8 - 3 x 3 x 0.85mm 0.85mm 3mm 5.5 V +85 °C - 2.1 V
RS Stock No. 662-4753
Mfr. Part No.LT1054CDW
MYR12.664
Each (In a Pack of 5)
units
Inverting, Step Up - - Surface Mount SOIC 16 - 10.28 x 7.52 x 2.35mm 2.35mm 10.28mm 15 V +70 °C - 3.5 V
RS Stock No. 732-7699
Mfr. Part No.MAX1681ESA+
MYR22.00
Each
units
Inverting, Step Up 125mA 1490 kHz Surface Mount SOIC 8 2 → 5.5 V 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V +85 °C -3.75 V 2 V
RS Stock No. 165-9399
Mfr. Part No.MAX1595EUA50+
MYR10.10
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
RS Stock No. 146-1010
Mfr. Part No.MAX860ISA+
MYR9.17
Each (In a Tube of 100)
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
RS Stock No. 121-8323
Mfr. Part No.MAX660M/NOPB
MYR4.012
Each (In a Tube of 95)
units
Inverting, Step Up - - 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. 732-6839
Mfr. Part No.MAX680ESA+
MYR26.07
Each
units
Inverting, Step Up 10mA 8 kHz Surface Mount SOIC 8 1.5 → 1.6 V 5 x 4 x 1.5mm 1.5mm 5mm 6 V +85 °C - 2 V
RS Stock No. 177-7251
Mfr. Part No.LT1026CS8#PBF
MYR29.78
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
New
RS Stock No. 190-0321
Mfr. Part No.MAX868EUB+
MYR17.30
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. 133-0662
Mfr. Part No.LM27761DSGT
MYR7.068
Each (In a Pack of 5)
units
Inverting 250mA 2.3 MHz Surface Mount WSON 8 - 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. 691-0578
Mfr. Part No.SC630ULTRT
BrandSemtech
MYR3.968
Each (In a Pack of 5)
units
Step Down, Step Up - - Surface Mount MLPD UT EP 8 - 2 x 2 x 0.55mm 0.55mm 2mm 5.5 V +85 °C - 2.9 V
RS Stock No. 923-1449
Mfr. Part No.ICL7660SIBAZ
MYR5.685
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. 872-2461
Mfr. Part No.TC7660COA
BrandMicrochip
MYR2.49
Each (In a Tube of 100)
units
- - - Surface Mount SOIC 8 - 4.9 x 3.91 x 1.42mm 1.42mm 4.9mm - +70 °C 10 V -
RS Stock No. 732-7630
Mfr. Part No.ICL7660ESA+
MYR16.48
Each
units
Inverting, Step Up 20mA - Surface Mount SOIC 8 - 5 x 4 x 1.5mm 1.5mm 5mm 10 V +85 °C - 1.5 V
RS Stock No. 412-585
Mfr. Part No.ADM660ARZ
MYR19.282
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. 774-7636
Mfr. Part No.TC1044SEPA
BrandMicrochip
MYR3.89
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
RS Stock No. 165-2095
Mfr. Part No.TC7660EOA
BrandMicrochip
MYR2.341
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
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