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. 162-6768
Mfr. Part No.TPS60150DRVT
$1.732
Each (On a Reel of 250)
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. 540-4687
Mfr. Part No.MAX860ISA+
$6.20
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
RS Stock No. 545-5988
Mfr. Part No.LTC1044CN8#PBF
$6.59
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. 709-5241
Mfr. Part No.ADM8660ARZ
$7.15
Each
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. 761-9383
Mfr. Part No.LTC3200ES6-5#TRMPBF
$6.91
Each
units
Charge Pump, Regulated 150mA 2000 kHz Surface Mount SOT-23 6 - 3.1 x 1.75 x 1.3mm 1.3mm 3.1mm 4.5 V +85 °C 5.2 V 2.7 V
RS Stock No. 155-7516
Mfr. Part No.LTC3240EDC-3.3#TRMPBF
$4.317
Each (On a Reel of 500)
units
Step Down 150mA 1.8 MHz Surface Mount DFN 6 1.8 5.5 V 2 x 2 x 0.7mm 0.7mm 2mm 5.5 V +85 °C 3.3 V 1.8 V
RS Stock No. 146-1010
Mfr. Part No.MAX860ISA+
$3.641
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. 872-2464
Mfr. Part No.TC7660CPA
BrandMicrochip
$1.121
Each (In a Tube of 60)
units
- - - Through Hole PDIP 8 - 10.16 x 6.6 x 4.06mm 4.06mm 10.16mm - +70 °C 10 V -
RS Stock No. 177-7270
Mfr. Part No.LT1054IS8#PBF
$12.92
Each (In a Tube of 100)
units
Inverting 100mA 25 kHz Surface Mount SOIC 8 - - 1.498mm 5mm 15 V +100 °C - 3.5 V
RS Stock No. 145-5866
Mfr. Part No.LTC3261EMSE#PBF
$7.844
Each (In a Tube of 37)
units
Inverting 100mA 550 kHz Surface Mount MSOP 12 4.5 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. 732-7703
Mfr. Part No.MAX1759EUB+
$10.40
Each
units
Step Down, Step Up 100mA 1800 kHz Surface Mount μMAX 10 1.6 → 5.5 V 3.05 x 3.05 x 0.95mm 0.95mm 3.05mm 5.5 V +85 °C 3.3 V, 5.5 V 1.6 V
RS Stock No. 851-6768
Mfr. Part No.LTC3260EMSE#PBF
$13.80
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. 145-7645
Mfr. Part No.LTC1261CS8#PBF
$4.325
Each (In a Tube of 100)
units
Inverting, Step Up 15mA 550 kHz Surface Mount SOIC 8 3 8 V 5.004 x 3.988 x 1.498mm 1.498mm 5mm 8 V +70 °C -8 V 3 V
RS Stock No. 144-5828
Mfr. Part No.TC7660EPA
BrandMicrochip
$1.121
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. 779-8987
Mfr. Part No.LT1054IS8#PBF
$18.51
Each
units
Inverting 100mA 25 kHz Surface Mount SOIC 8 - - 1.498mm 5mm 15 V +100 °C - 3.5 V
RS Stock No. 165-2095
Mfr. Part No.TC7660EOA
BrandMicrochip
$1.018
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. 146-1028
Mfr. Part No.MAX865EUA+
$3.474
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. 177-7310
Mfr. Part No.LTC1046CS8#PBF
$10.178
Each (In a Tube of 100)
units
Inverting, Step Down/Step Up 50mA 30 kHz Surface Mount SOIC 8 - 5.004 x 3.988 x 1.498mm 1.498mm 5mm 6 V +70 °C - 1.5 V
RS Stock No. 121-8301
Mfr. Part No.TPS60500DGS
$2.109
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 3.3 V 1.8 V
RS Stock No. 732-6839
Mfr. Part No.MAX680ESA+
$10.60
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
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