Regulated Step-Down Charge Pumps

Analog Devices’ family of charge pumps offers the widest selection of simple and compact inductorless dc-to-dc converter designs. These converters can be used to step-up, step-down, or invert an input voltage. By eliminating the inductor, these switched capacitor converters provide a small solution footprint and a simpler design. Furthermore, by incorporating spread spectrum technology on-chip, both input and output noise are significantly reduced.
Product Selection Table

Regulated Step-Down Charge Pumps

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SortOrderPart#Number of OutputsVin
(min)
(V)
Vin
(max)
(V)
Output Current
(typ)
(A)
Output VoltageIsupply
(typ)
(A)
CommentsUS Price 1000 to 4999
($ US)
1LTC7821 1 10 72 25- 500µ Hybrid Step-Down Synchronous Controller $5.20 (LTC7821EUH#PBF)
2LTC3256 2 5.5 38 350m 3.3V, 5V 20µ Wide VIN Range Dual Output 350mA Step-Down Charge Pump with Watchdog Timer $2.95 (LTC3256EMSE#PBF)
3LTC3255 1 4 48 50m Adj (2.4V to 12.5V) 30µ Wide VIN Range Fault Protected 50mA Step-Down Charge Pump $2.30 (LTC3255EMSE#PBF)
4LTC3252 2 2.7 5.5 250m Adjustable (0.9 to 1.6) 60µ Dual Output Spread Spectrum, Ultralow Noise $2.60 (LTC3252EDE#PBF)
5LTC3251 1 2.7 5.5 500m 1.2V, 1.5V, Adj Spread spectrum, ultralow noise, 2-phase operation $1.95 (LTC3251EMSE-1.2#PBF)
6LTC3250 1 3.1 5.5 250m 1.2V, 1.5V 35µ Low Noise, 85% Efficiency $1.41 (LTC3250ES6-1.2#TRPBF)
7LTC1911 1 2.7 5.5 250m 1.5V, 1.8V 180µ Low Noise, 70% Efficiency $2.34 (LTC1911EMS8-1.5#PBF)
8LTC1503-2 1 2.4 6 100m 2V 25µ SD Disconnect $1.70 (LTC1503CS8-2#PBF)
9LTC1503-1.8 1 2.4 6 100m 1.8V 25µ SD Disconnect $1.70 (LTC1503CS8-1.8#PBF)