LTC2903-1 - Precision Quad Supply Monitor in 6-Lead SOT-23
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
Typical Application
Description
The LTC2903-1 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.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
SOT-23
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
|---|---|---|---|---|---|---|
| LTC2903CS6-A1 | SOT | 6 | C | $2.48 | View | |
| LTC2903CS6-A1#PBF | SOT | 5 | C | $2.48 | View | |
| LTC2903CS6-A1#TR | SOT | 6 | C | $2.48 | $1.71 | View |
| LTC2903CS6-A1#TRM | SOT | 6 | C | $2.48 | $1.76 | View |
| LTC2903CS6-A1#TRMPBF | SOT | 6 | C | $2.48 | $1.76 | View |
| LTC2903CS6-A1#TRPBF | SOT | 6 | C | $2.48 | $1.71 | View |
| LTC2903CS6-B1 | SOT | 6 | C | $2.48 | View | |
| LTC2903CS6-B1#PBF | SOT | 6 | C | $2.48 | View | |
| LTC2903CS6-B1#TR | SOT | 6 | C | $2.48 | $1.71 | View |
| LTC2903CS6-B1#TRM | SOT | 6 | C | $2.48 | $1.76 | View |
| LTC2903CS6-B1#TRMPBF | SOT | 6 | C | $2.48 | $1.76 | View |
| LTC2903CS6-B1#TRPBF | SOT | 6 | C | $2.48 | $1.71 | View |
| LTC2903CS6-C1 | SOT | 6 | C | $2.66 | View | |
| LTC2903CS6-C1#PBF | SOT | 6 | C | $2.66 | View | |
| LTC2903CS6-C1#TR | SOT | 6 | C | $2.66 | $1.81 | View |
| LTC2903CS6-C1#TRM | SOT | 6 | C | $2.66 | $1.86 | View |
| LTC2903CS6-C1#TRMPBF | SOT | 6 | C | $2.66 | $1.86 | View |
| LTC2903CS6-C1#TRPBF | SOT | 6 | C | $2.66 | $1.81 | View |
| LTC2903CS6-D1 | SOT | 6 | C | $2.48 | View | |
| LTC2903CS6-D1#PBF | SOT | 6 | C | $2.48 | View | |
| LTC2903CS6-D1#TR | SO | 6 | C | $2.48 | $1.71 | View |
| LTC2903CS6-D1#TRM | SOT | 6 | C | $2.48 | $1.76 | View |
| LTC2903CS6-D1#TRMPBF | SOT | 6 | C | $2.48 | $1.76 | View |
| LTC2903CS6-D1#TRPBF | SO | 6 | C | $2.48 | $1.71 | View |
| LTC2903CS6-E1 | SOT | 6 | C | $2.48 | View | |
| LTC2903CS6-E1#PBF | SOT | 6 | C | $2.48 | View | |
| LTC2903CS6-E1#TR | SOT | 6 | C | $2.48 | $1.71 | View |
| LTC2903CS6-E1#TRM | SOT | 6 | C | $2.48 | $1.76 | View |
| LTC2903CS6-E1#TRMPBF | SOT | 6 | C | $2.48 | $1.76 | View |
| LTC2903CS6-E1#TRPBF | SOT | 6 | C | $2.48 | $1.71 | View |
| LTC2903IS6-A1 | SOT | 6 | I | $2.84 | View | |
| LTC2903IS6-A1#PBF | SOT | 6 | I | $2.84 | View | |
| LTC2903IS6-A1#TR | SOT | 6 | I | $2.84 | $1.96 | View |
| LTC2903IS6-A1#TRM | SOT | 6 | I | $2.84 | $2.01 | View |
| LTC2903IS6-A1#TRMPBF | SOT | 6 | I | $2.84 | $2.01 | View |
| LTC2903IS6-A1#TRPBF | SOT | 6 | I | $2.84 | $1.96 | View |
| LTC2903IS6-B1 | SOT | 6 | I | $2.84 | View | |
| LTC2903IS6-B1#PBF | SOT | 6 | I | $2.84 | View | |
| LTC2903IS6-B1#TR | SOT | 6 | I | $2.84 | $1.96 | View |
| LTC2903IS6-B1#TRM | SOT | 6 | I | $2.84 | $2.01 | View |
| LTC2903IS6-B1#TRMPBF | SOT | 6 | I | $2.84 | $2.01 | View |
| LTC2903IS6-B1#TRPBF | SOT | 6 | I | $2.84 | $1.96 | View |
| LTC2903IS6-C1 | SOT | 6 | I | $2.36 | View | |
| LTC2903IS6-C1#PBF | SOT | 6 | I | $2.36 | View | |
| LTC2903IS6-C1#TR | SOT | 6 | I | $2.36 | $2.06 | View |
| LTC2903IS6-C1#TRM | SOT | 6 | I | $2.36 | $2.11 | View |
| LTC2903IS6-C1#TRMPBF | SOT | 6 | I | $2.36 | $2.11 | View |
| LTC2903IS6-C1#TRPBF | SOT | 6 | I | $2.36 | $2.06 | View |
| LTC2903IS6-D1 | SOT | 6 | I | $2.84 | View | |
| LTC2903IS6-D1#PBF | SOT | 6 | I | $2.84 | View | |
| LTC2903IS6-D1#TR | SOT | 6 | I | $2.84 | $1.96 | View |
| LTC2903IS6-D1#TRMPBF | SOT | 6 | I | $2.84 | $2.01 | View |
| LTC2903IS6-D1#TRPBF | SOT | 6 | I | $2.84 | $1.96 | View |
| LTC2903IS6-E1 | SOT | 6 | I | $2.84 | View | |
| LTC2903IS6-E1#PBF | SOT | 6 | I | $2.84 | View | |
| LTC2903IS6-E1#TR | SOT | 6 | I | $2.84 | $1.96 | View |
| LTC2903IS6-E1#TRM | SOT | 6 | I | $2.84 | $2.01 | View |
| LTC2903IS6-E1#TRMPBF | SOT | 6 | I | $2.84 | $2.01 | View |
| LTC2903IS6-E1#TRPBF | SOT | 6 | I | $2.84 | $1.96 | View |
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Demo Boards
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Applications
- Multivoltage Systems
- Optical Networking Systems
- Cell Phone Base Stations
- Network Servers
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Related models available in LTspice IV
LTC2903-A1
LTC2903-B1
LTC2903-C1
LTC2903-D1
LTC2903-E1
Technical Support
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- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.