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
AEC-Q100 data available for specific packages
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
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTC2903CS6-A1#PBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-A1#TRMPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-A1#TRPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-B1#PBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-B1#TRMPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-B1#TRPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-C1#PBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-C1#TRMPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-C1#TRPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-D1#PBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-D1#TRMPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-D1#TRPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-E1#PBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-E1#TRMPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903CS6-E1#TRPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC2903IS6-A1#PBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-A1#TRMPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-A1#TRPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-B1#PBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-B1#TRMPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-B1#TRPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-C1#PBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-C1#TRMPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-C1#TRPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-D1#PBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-D1#TRMPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-D1#TRPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-E1#PBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-E1#TRMPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC2903IS6-E1#TRPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- 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
sales office or authorized distributor.Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.Click here to view our complete list of demo boards
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC2903IS6-A1#PBF | SOT-23 | I | $2.84 | Yes | ||
| LTC2903IS6-A1#TRMPBF | SOT-23 | I | $2.84 | $2.01 | Yes | |
| LTC2903IS6-A1#TRPBF | SOT-23 | I | $2.84 | $1.96 | Yes | |
| LTC2903IS6-B1#PBF | SOT-23 | I | $2.84 | Yes | ||
| LTC2903IS6-B1#TRMPBF | SOT-23 | I | $2.84 | $2.01 | Yes | |
| LTC2903IS6-B1#TRPBF | SOT-23 | I | $2.84 | $1.96 | Yes | |
| LTC2903IS6-C1#PBF | SOT-23 | I | $2.36 | Yes | ||
| LTC2903IS6-C1#TRMPBF | SOT-23 | I | $2.36 | $2.11 | Yes | |
| LTC2903IS6-C1#TRPBF | SOT-23 | I | $2.36 | $2.06 | Yes | |
| LTC2903IS6-D1#PBF | SOT-23 | I | $2.84 | Yes | ||
| LTC2903IS6-D1#TRMPBF | SOT-23 | I | $2.84 | $2.01 | Yes | |
| LTC2903IS6-D1#TRPBF | SOT-23 | I | $2.84 | $1.96 | Yes | |
| LTC2903IS6-E1#PBF | SOT-23 | I | $2.84 | Yes | ||
| LTC2903IS6-E1#TRMPBF | SOT-23 | I | $2.84 | $2.01 | Yes | |
| LTC2903IS6-E1#TRPBF | SOT-23 | I | $2.84 | $1.96 | Yes | |
| Buy Now • Request Samples | ||||||
Applications
- Multivoltage Systems
- Optical Networking Systems
- Cell Phone Base Stations
- Network Servers
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LTC2903-A1
LTC2903-B1
LTC2903-C1
LTC2903-D1
LTC2903-E1
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
