大型系统 (比如那些采用 ASIC 或 FPGA 的系统) 需要多个电源，而这些电源的管理必需简单易行。用户必需能够容易地调节电源电压，同时通过一个可存取接口来读取诸如电压、电流或温度等参数。以数字方式控制系统电源为内置更多的精准保护、诊断和监视功能电路提供了更多的便利条件，否则，要想在一个纯模拟型电源系统中实现上述功能其难度和成本都将更高。
凌力尔特的数字电源管理器系列是高集成度解决方案，可提供包括电源监视、监控、裕度调节和排序在内的基本功能。某些型号的器件还具有 EEPROM，用于提供用户配置及故障记录功能，而其他器件则可能具备一个可编程基准以实现最大的灵活性及准确度。
数字电源管理器| Product | Function | Number of Outputs | Supply Voltage Range | I/O | ADC | DAC | Monitors | Packages |
| LTC2970 | Dual Power Supply Monitor and Margining Controller with SMBus Compatible I2C Interface | 2 | 5V to 15V | SMBus/I2C | 14-bit | 8-bit | Internal Temp, Voltage (2 Vout, 1 Vin), Current (2) | QFN-24 |
| LTC2974 | Quad, Digital Power-Supply Monitor, Supervisor, Sequencer, and Margin Controller | 4 | 3.3V to 15V | PMBus/SMBus/I2C | 16-bit | 10-bit | Internal Temp, External Temp (4), Voltage (4 Vout, 1 Vin), Current (4) | QFN-64 |
| LTC2978 | Octal, Digital Power-Supply Monitor, Supervisor, Sequencer, and Margin controller | 8 | 3.3V to 15V | PMBus/SMBus/I2C | 16-bit | 10-bit | Internal Temp, Voltage (8 Vout, 1 Vin), Current (4) | QFN-64 |
| LTC3880 | Step-Down Regulator with I2C-based PMBus Compliant Serial Interface | 2 | 4.5V to 24V | PMBus/SMBus/I2C | 16-bit | 12-bit | Vin, Iin, Vout, Iout, Temperature and Faults | QFN-40 |
| LTC3883 | Step-Down Regulator with I2C-based PMBus Compliant Serial Interface | 1 | 4.5V to 24V | PMBus/SMBus/I2C | 16-bit | 12-bit | Vin, Iin, Vout, Iout, Temperature and Faults | QFN-32 |
