LTC2902 - Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance

LTC2902 - Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance - Linear Technology（凌力尔特）

The LTC2902 is a programmable supply monitor for systems with up to four supply voltages. One of 16 preset or adjustable voltage monitor combinations can be selected using an external resistor divider connected to the program pin. The preset voltage thresholds are digitally programmable to 5%, 7.5%, 10% or 12.5% below the nominal operating voltage, and are accurate to 1.5% over temperature. All four voltage comparator outputs are connected to separate pins for individual supply monitoring.

The reset delay time is adjustable using an external capacitor. Tight voltage threshold accuracy and glitch immunity ensure reliable reset operation without false triggering. The RST output is guaranteed to be in the correct state for VCC down to 1V and may be disabled during supply margin testing. The LTC2902-1 features an open-drain RST output, while the LTC2902-2 has a push-pull RST output.

The 43µA supply current makes the LTC2902 ideal for power conscious systems and the part may be configured to monitor less than four inputs. The LTC2902-1/LTC2902-2 are available in the 16-lead narrow SSOP package.

• LTC4361-1 - LTC4361-1是过压 / 过流保护控制器
• LTC2265-12 - LTC2265-12是12 位、65Msps 低功率双通道 ADC
• LT1034IZ-1.2 - LT1034IZ-1.2是Micropower Dual Reference
• LTC3405A-1.5 - LTC3405A-1.5是1.5V, 1.8V, 1.5MHz, 300mA Synchronous Step-Down Regulators in ThinSOT
• LTC4240 - LTC4240是具 I2C 兼容接口的 CompactPCI 热插拔控制器
• LTC4089-3 - LTC4089-3是具有高电压开关充电器的 USB 电源管理器
• LT3909 - LT3909是具 ±1.8% 电流匹配准确度的两串 x 50mA、2MHz 升压型 LED 驱动器
• LTC1290CMJ - LTC1290CMJ是Single Chip 12-Bit Data Acquisition System
• LT1585A - LT1585A是5A Low Dropout Fast Response Positive Regulators Adjustable and Fixed
• LTC3121 - LTC3121是具输出断接功能的 15V、1.5A 同步升压型 DC/DC 转换器