LTC2903-1 Precision Quad Supply Monitor in 6-Lead SOT-23

The LTC®2903-1 monitors up to four supply voltages. The common reset output remains low until all four inputs have been in compliance for 200ms. Voltage thresholds maintain ±1.5% accuracy over temperature (with respect to the monitored voltage). The LTC2903-1 features an open-drain RST output with a weak internal pullup.

Internal supply voltage (VCC) is generated from the greater voltage on the V1, V2 inputs. VCC = V1 for LTC2903-D1 and LTC2903-E1. The RST output is guaranteed to sink at least 5µA (VOL = 0.15V) for VCC down to 0.5V and will typically conduct current down to 0V. Quiescent current is 20µA typical, making the LTC2903-1 ideal for power conscious systems. The LTC2903-1 is available in a 6-lead low profile (1mm) SOT-23 package

产品特点 Features
  • Ultralow Voltage Reset: VCC = 0.5V Guaranteed
  • Monitor Four Inputs Simultaneously
    3.3V, 2.5V, 1.8V, ADJ (LTC2903-A1)
    5V, 3.3V, 2.5V, 1.8V (LTC2903-B1)
    5V, 3.3V, 1.8V, –5.2V (LTC2903-C1)
    3.3V, ADJ, ADJ, ADJ (LTC2903-D1)
    5V, ADJ, ADJ, ADJ (LTC2903-E1)
  • Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage over Temperature
  • 10% (A1, B1, C1) and 5% (D1, E1) Undervoltage Monitoring
  • Low Supply Current: 20µA Typical
  • 200ms Reset Time Delay
  • Active Low Open-Drain RST Output
  • Power Supply Glitch Immunity
  • Low Profile (1mm) SOT-23 (ThinSOTTM) Package
应用
  • Multivoltage Systems
  • Optical Networking Systems
  • Cell Phone Base Stations
  • Network Servers
典型应用图
LTC2903-1 典型应用
参数
LTC2903-1 参数
LTC2903-1 订购信息和价格参考Package Variations and Pricing
器件型号 封装 引脚 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量) *
LTC2903CS6-A1 SOT 6 C $2.48
LTC2903CS6-A1#PBF SOT 5 C $2.48
LTC2903CS6-A1#TR SOT 6 C $2.48 $1.71
LTC2903CS6-A1#TRM SOT 6 C $2.48 $1.76
LTC2903CS6-A1#TRMPBF SOT 6 C $2.48 $1.76
LTC2903CS6-A1#TRPBF SOT 6 C $2.48 $1.71
LTC2903CS6-B1 SOT 6 C $2.48
LTC2903CS6-B1#PBF SOT 6 C $2.48
LTC2903CS6-B1#TR SOT 6 C $2.48 $1.71
LTC2903CS6-B1#TRM SOT 6 C $2.48 $1.76
LTC2903CS6-B1#TRMPBF SOT 6 C $2.48 $1.76
LTC2903CS6-B1#TRPBF SOT 6 C $2.48 $1.71
LTC2903CS6-C1 SOT 6 C $2.66
LTC2903CS6-C1#PBF SOT 6 C $2.66
LTC2903CS6-C1#TR SOT 6 C $2.66 $1.81
LTC2903CS6-C1#TRM SOT 6 C $2.66 $1.86
LTC2903CS6-C1#TRMPBF SOT 6 C $2.66 $1.86
LTC2903CS6-C1#TRPBF SOT 6 C $2.66 $1.81
LTC2903CS6-D1 SOT 6 C $2.48
LTC2903CS6-D1#PBF SOT 6 C $2.48
LTC2903CS6-D1#TR SO 6 C $2.48 $1.71
LTC2903CS6-D1#TRM SOT 6 C $2.48 $1.76
LTC2903CS6-D1#TRMPBF SOT 6 C $2.48 $1.76
LTC2903CS6-D1#TRPBF SO 6 C $2.48 $1.71
LTC2903CS6-E1 SOT 6 C $2.48
LTC2903CS6-E1#PBF SOT 6 C $2.48
LTC2903CS6-E1#TR SOT 6 C $2.48 $1.71
LTC2903CS6-E1#TRM SOT 6 C $2.48 $1.76
LTC2903CS6-E1#TRMPBF SOT 6 C $2.48 $1.76
LTC2903CS6-E1#TRPBF SOT 6 C $2.48 $1.71
LTC2903IS6-A1 SOT 6 I $2.84
LTC2903IS6-A1#PBF SOT 6 I $2.84
LTC2903IS6-A1#TR SOT 6 I $2.84 $1.96
LTC2903IS6-A1#TRM SOT 6 I $2.84 $2.01
LTC2903IS6-A1#TRMPBF SOT 6 I $2.84 $2.01
LTC2903IS6-A1#TRPBF SOT 6 I $2.84 $1.96
LTC2903IS6-B1 SOT 6 I $2.84
LTC2903IS6-B1#PBF SOT 6 I $2.84
LTC2903IS6-B1#TR SOT 6 I $2.84 $1.96
LTC2903IS6-B1#TRM SOT 6 I $2.84 $2.01
LTC2903IS6-B1#TRMPBF SOT 6 I $2.84 $2.01
LTC2903IS6-B1#TRPBF SOT 6 I $2.84 $1.96
LTC2903IS6-C1 SOT 6 I $2.36
LTC2903IS6-C1#PBF SOT 6 I $2.36
LTC2903IS6-C1#TR SOT 6 I $2.36 $2.06
LTC2903IS6-C1#TRM SOT 6 I $2.36 $2.11
LTC2903IS6-C1#TRMPBF SOT 6 I $2.36 $2.11
LTC2903IS6-C1#TRPBF SOT 6 I $2.36 $2.06
LTC2903IS6-D1 SOT 6 I $2.84
LTC2903IS6-D1#PBF SOT 6 I $2.84
LTC2903IS6-D1#TR SOT 6 I $2.84 $1.96
LTC2903IS6-D1#TRMPBF SOT 6 I $2.84 $2.01
LTC2903IS6-D1#TRPBF SOT 6 I $2.84 $1.96
LTC2903IS6-E1 SOT 6 I $2.84
LTC2903IS6-E1#PBF SOT 6 I $2.84
LTC2903IS6-E1#TR SOT 6 I $2.84 $1.96
LTC2903IS6-E1#TRM SOT 6 I $2.84 $2.01
LTC2903IS6-E1#TRMPBF SOT 6 I $2.84 $2.01
LTC2903IS6-E1#TRPBF SOT 6 I $2.84 $1.96
LTC2903-1 数据手册及相关资料下载
  1. 数据手册(英文) : LTC2903-1 - Precision Quad Supply Monitor in 6-Lead SOT-23.PDF
  2. 可靠性数据 : R413 Reliability Data .PDF
  3. 产品选型卡 : High Voltage Surge Stoppers.PDF
  4. 产品选型卡 : Voltage Monitors & Supervisors Quick Guide.PDF