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LTC1726-5 Datasheet(PDF) 1 Page - Linear Technology |
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LTC1726-5 Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page 1 LTC2903-1 29031f a ■ Multivoltage Systems ■ Optical Networking Systems ■ Cell Phone Base Stations ■ Network Servers Precision Quad Supply Monitor in 6-Lead SOT-23 , LTC and LT are registered trademarks of Linear Technology Corporation. ■ 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 (ThinSOT TM) Package 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. ThinSOT is a trademark of Linear Technology Corporation. VIN, INPUT SUPPLY VOLTAGE (V) 0 0.06 0.08 0.10 0.8 2903 TA01b 0.04 0.02 0.05 0.07 0.09 0.03 0.01 0 0.2 0.1 1µA 0.4 0.3 0.6 0.7 0.9 0.5 1 2µA 5µA 20µA VIN = V1 = V2 = V3 LTC2903-B1 10µA Low Voltage Reset Pull-Down Performance vs External Pull-Up Current and Input Supply Voltage FEATURES DESCRIPTIO APPLICATIO S TYPICAL APPLICATIO V1 GND V2 RST V4 V3 LTC2903-B1 C1 0.1µF 1.8V C2 0.1µF 2903 TA01 2.5V 3.3V 5V DC/DC CONVERTER SYSTEM LOGIC |
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Similar Description - LTC1726-5 |
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