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. 145-6522
Mfr. Part No.TPS60401DBVT
$1.07
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. 169-8352
Mfr. Part No.ICL7660SIPAZ
BrandIntersil
$2.486
Each (In a Tube of 50)
units
Inverting, Step Up - - Through Hole PDIP 8 - 10.16 x 7.11 x 4.95mm 4.95mm 10.16mm 12 V +85 °C -1.5 V, 22.8 V 1.5 V
RS Stock No. 921-5731
Mfr. Part No.ICL7660SIPAZ
$2.926
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 +85 °C -1.5 V, 22.8 V 1.5 V
RS Stock No. 704-6707
Mfr. Part No.ICL7660SIPAZ
$3.03
Each
units
Inverting, Step Up - - Through Hole PDIP 8 - 10.16 x 7.11 x 4.95mm 4.95mm 10.16mm 12 V +85 °C -1.5 V, 22.8 V 1.5 V
RS Stock No. 517-1191
Mfr. Part No.TPS60401DBVT
$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. 133-0662
Mfr. Part No.LM27761DSGT
$3.168
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. 170-4505
Mfr. Part No.SP6661EN-L
BrandEXAR
$2.343
Each (In a Tube of 98)
units
Inverting, Voltage Doubler 200mA 1250 kHz Surface Mount SOIC 8 5 V 4.9 x 3.9 x 1.65mm 1.65mm 4.9mm 5.3 V +85 °C -5 V, 10 V 1.5 V
RS Stock No. 823-4006
Mfr. Part No.TC1044SCPA
BrandMicrochip
$1.617
Each (In a Pack of 10)
units
Charge Pump 20mA 45 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 12 V +70 °C -12 V 3 V
RS Stock No. 662-4093
Mfr. Part No.TPS60403DBVR
$1.596
Each (In a Pack of 5)
units
Inverting - - 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. 920-3615
Mfr. Part No.LM2623MM/NOPB
$1.307
Each (On a Reel of 1000)
units
- 2A - Surface Mount MSOP 8 - 3 x 3 x 0.86mm 0.86mm 3mm - +85 °C 14 V -
RS Stock No. 920-3624
Mfr. Part No.LM2662M/NOPB
$4.849
Each (In a Tube of 95)
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. 168-4993
Mfr. Part No.LM27761DSGT
$2.09
Each (On a Reel of 250)
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. 517-1208
Mfr. Part No.TPS60403DBVT
$2.216
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. 533-3951
Mfr. Part No.LM2662M/NOPB
$5.32
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. 178-4969
Mfr. Part No.TC1044SCPA
BrandMicrochip
$1.309
Each (In a Tube of 60)
units
Charge Pump 20mA 45 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 12 V +70 °C -12 V 3 V
RS Stock No. 165-2030
Mfr. Part No.TC962EPA
BrandMicrochip
$4.07
Each (In a Tube of 60)
units
Inverting 80mA 24 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 18 V +85 °C -18 V 3 V
RS Stock No. 920-3407
Mfr. Part No.TPS60403DBVT
$1.454
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. 774-7898
Mfr. Part No.TC962EPA
BrandMicrochip
$5.015
Each (In a Bag of 2)
units
Inverting 80mA 24 kHz Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm 18 V +85 °C -18 V 3 V
RS Stock No. 922-2707
Mfr. Part No.TPS60403DBVR
$0.874
Each (On a Reel of 3000)
units
Inverting - - 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. 769-5416
Mfr. Part No.SP6661EN-L
BrandEXAR
$2.905
Each (In a Pack of 2)
units
Inverting, Voltage Doubler 200mA 1250 kHz Surface Mount SOIC 8 5 V 4.9 x 3.9 x 1.65mm 1.65mm 4.9mm 5.3 V +85 °C -5 V, 10 V 1.5 V