稳压降压型电荷泵

ADI公司的稳压降压型电荷泵系列用于将输入电压递降/降压至较低的调节输出电压。开关电容转换器能够比传统电感切换器提供更小的解决方案尺寸和更简化的设计,同时比线性稳压器提供更高的效率和更低的运行温度。主要特点包括低静态电流、具有自动模式切换以维持稳压的多模式操作、高达500mA 的 Iout、低噪声恒频操作、Burst Mode® 操作、过温、故障和短路保护。
产品选型表

稳压降压型电荷泵

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SortOrderPart#Number of OutputsVin
(min)
(V)
Vin
(max)
(V)
Output Current
(typ)
(A)
Output VoltageIsupply
(typ)
(A)
CommentsPrice (1000+)
($ US)
1LTC7821 1 10 72 25 Adj 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 (LTC3255EDD#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#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)