Regulated Inverting Charge Pumps

Analog Devices’ family of regulated inverting charge pumps are used to invert an input voltage to a regulated output voltage. These are useful for systems with split-rail positive and negative input supplies. By eliminating the inductor, these switched capacitor converters offer alternatives to switching regulator topologies, providing a small solution footprint and a simple design. Key features include low quiescent current, multimode operation with automatic mode switching to maintain regulation, Iout up to 500mA, low noise constant frequency operation, Burst Mode® operation, overtemperature, fault and short-circuit protection.
Product Selection Table

Regulated Inverting Charge Pumps

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SortOrderPart#Number of OutputsVin
(min)
(V)
Vin
(max)
(V)
Output Current
(typ)
(A)
Output VoltageIsupply
(typ)
(A)
Frequency
(typ)
(Hz)
Price (1000+)
($ US)
1LTC3265 2 4.5 32 50m Adj, -Adj 85µ 500k $3.80 (LTC3265EDHC#PBF)
2LTC3260 3 4.5 32 100m Adj, -Adj 100µ 500k $3.40 (LTC3260EDE#PBF)
3LTC1983 1 3 5.5 100m -3V, -5V 25µ 900k $1.81 (LTC1983ES6-3#TRPBF)
4LTC1261L 1 2.7 5.25 20m -4.5V, -4V, Adj 650µ 650k $1.70 (LTC1261LCS8#PBF)
5LTC1551L 1 2.7 5.25 20m -4.1V 3.5m 900k $1.70 (LTC1551LCS8#PBF)
6LTC1550L 1 2.7 5.25 20m -2.5V, -2V, -4.1V, -4V, Adj 4.2m 900k $1.70 (LTC1550LCS8#PBF)
7ADP3605 1 3 6 120m -3V 3m 250k $1.50 (ADP3605ARZ)
8LTC1551 1 2.7 5.25 20m -4.1V 4.2m 900k $2.25 (LTC1551CS8-4.1#PBF)
9LTC1550 1 2.7 5.25 20m -1.5V, -2.5V, -2V, -4.1V, -4.5V, Adj 4.2m 900k $2.25 (LTC1550CS8-4.1#PBF)
10LTC1261 1 3 8 12m -3V, -4.5V, -4V, -5V, Adj 600µ 550k $1.75 (LTC1261CS8#PBF)
11LT1054L 1 3.5 7 125m Adj 2.5m 25k $2.00 (LT1054LCS8#PBF)
12LT1054 1 3.5 15 100m Adj 2.5m 25k $2.65 (LT1054CN8#PBF)