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Analog Devices Inc. LTC2915CTS8-1#TRMPBF
- Part No.:
- LTC2915CTS8-1#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2915CTS8-1#TRMPBF.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TSOT23-8
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC2915CTS8-1#TRMPBF from Analog Devices (formerly Linear Technology) is a precision voltage supervisor IC with 27 selectable reset thresholds, designed for reliable power-on reset and supply monitoring in embedded systems. It operates from 1.5V to 5.5V, consumes only 30μA quiescent current, features ±1.5% threshold accuracy over –40°C to 125°C, and delivers glitch-immune open-drain RST output - used in automotive control units requiring stable 1.8V/–5% supply supervision.
For engineers reviewing the LTC2915CTS8-1#TRMPBF datasheet, LTC2915CTS8-1#TRMPBF pinout, LTC2915CTS8-1#TRMPBF application, or LTC2915CTS8-1#TRMPBF equivalent, key selection criteria include its 9 nominal voltage selections (12V to ADJ), 3 tolerance options (–5%/–10%/–15%), internal 200ms reset timeout, TSOT-23-8 package, and guaranteed RST assertion down to VCC = 0.8V.
Technical Context
The LTC2915CTS8-1#TRMPBF implements a precision comparator-based supervision architecture with three-state SEL1/SEL2/TOL inputs decoding 9 nominal thresholds and 3 tolerance bands into 27 discrete trip points. Its internal 6.2V shunt regulator enables high-voltage operation (up to 15V on VM) when paired with an external series resistor on VCC.
Glitch immunity is achieved via dual-stage filtering: a dedicated anti-glitch circuit enforces minimum input transient duration (tUV = 10–150μs), while the adjustable reset timeout (200ms internal or capacitor-programmable) prevents spurious RST toggling during supply recovery - critical for microprocessor reset integrity in noisy automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 1.5V to 5.5V - supports direct connection to logic rails without external regulation |
| Threshold Accuracy | ±1.5% over –40°C to 125°C - ensures reliable reset across full automotive temperature range |
| Quiescent Current | 30μA typical - enables always-on supervision in battery-backed or low-power systems |
| Reset Timeout | 200ms internal (RT tied to VCC) - meets JEDEC JESD78 reliability requirements for microcontroller initialization |
| VCC Undervoltage Lockout | 1.5V max - guarantees valid operation before RST release, preventing premature processor wake-up |
| RST Output Type | Open-drain - allows wired-OR of multiple supervisors and flexible pull-up to any logic rail (≤6V) |
| VM Input Impedance | 0.5–8MΩ - minimizes loading on monitored supply, especially critical for high-impedance ADJ-mode dividers |
Pinout & Package
Package: 8-Lead TSOT-23 (ThinSOT™), 3.0mm × 1.75mm × 1.0mm profile, exposed pad optional, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM (Pin 1) | Monitor Input | High-impedance comparator input; connects to supply under supervision or external resistive divider for ADJ mode |
| SEL1 (Pin 2) | Threshold Select | Three-state input (VCC/GND/Open) selecting nominal voltage among 9 options including 12V, 5V, 1.8V, and ADJ |
| TOL (Pin 3) | Tolerance Select | Three-state input (VCC/GND/Open) setting –5%, –10%, or –15% hysteresis band - LTC2915-specific feature |
| GND (Pin 4) | Ground Reference | Primary return path for internal circuits and RST pull-down; must be low-impedance connection |
| RST (Pin 5) | Reset Output | Open-drain output asserting low when VM falls below programmed threshold; requires external pull-up |
| RT (Pin 6) | Timeout Control | Capacitor connection point for adjustable reset delay; tied to VCC for fixed 200ms timeout |
| SEL2 (Pin 7) | Threshold Select | Second three-state input completing 9-threshold decode matrix with SEL1 and TOL |
| VCC (Pin 8) | Power Supply | Input powering internal circuitry; includes 6.2V shunt regulator for operation from >5.7V supplies |
Key Features
| Feature | Design Value |
|---|---|
| 27 Selectable Thresholds | Combines 9 nominal voltages (12V–ADJ) with 3 tolerances (–5%/–10%/–15%) - eliminates external resistor networks and reduces BOM count |
| Guaranteed RST at VCC ≥ 0.8V | Ensures valid reset assertion during brown-out conditions where VCC drops below 1.5V but remains above 0.8V |
| Glitch Immunity (tUV = 10–150μs) | Rejects short-duration transients on VM without requiring external RC filtering - simplifies PCB layout |
| Adjustable Reset Timeout | Supports both fixed 200ms (RT = VCC) and capacitor-programmable timing (9ms/nF) - accommodates diverse system boot requirements |
| Operation to 125°C | Qualified for automotive under-hood applications per AEC-Q100 Grade H (–40°C to 125°C) |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitoring 5V microcontroller supply in engine bay environment subject to load dump and cold-crank transients. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brown-out detection with 5V/–10% threshold and 200ms timeout. Use Value: Prevents ECU lockup during 12V battery sag by asserting RST until VCC and VM stabilize, leveraging ±1.5% accuracy to avoid nuisance resets. |
Use Scenario: Supervising isolated 3.3V logic rail in modular PLC backplane with variable load profiles. IC Role / Device Role / Timing Role: Single-supply monitor with 3.3V/–5% threshold and adjustable RT capacitor for 50ms timeout to match FPGA configuration time. Use Value: Enables deterministic startup sequencing without external timing components - reducing component count and board area. |
| Medical Infusion Pump Controller | Telecom Base Station Power Management |
Use Scenario: Ensuring safe power-up of ARM Cortex-M4 MCU in battery-operated infusion pump with tight safety margins. IC Role / Device Role / Timing Role: Low-quiescent-current (30μA) supervisor monitoring 1.8V core supply with –5% tolerance and internal 200ms reset. Use Value: Extends battery life while guaranteeing reset validity across temperature extremes (–40°C to 85°C), meeting IEC 60601-1 reliability requirements. |
Use Scenario: Dual-rail supervision (12V analog and 3.3V digital) in remote radio head with thermal cycling and EMI exposure. IC Role / Device Role / Timing Role: One LTC2915CTS8-1#TRMPBF monitors 12V via VM with ADJ mode and external divider; second supervises 3.3V directly. Use Value: Eliminates need for precision external resistors while maintaining ±1.5% trip accuracy - improving long-term calibration stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2916CTS8-1#TRMPBF | Fixed –5% tolerance only; includes manual reset (MR) pin; identical pinout and thresholds | Preferred where push-button reset is required; not suitable when –10% or –15% tolerance needed | Select LTC2916CTS8-1#TRMPBF if MR functionality is essential and tolerance flexibility is unnecessary |
| LTC2903CS6#TRMPBF | Fixed 1.6V threshold; 6-lead SOT-23; no threshold select pins; 1.2μA quiescent current | Targeted at ultra-low-power single-threshold applications; lacks programmability and high-temp rating | Choose LTC2903CS6#TRMPBF only for cost-sensitive, single-voltage designs where 125°C operation and multi-threshold capability are not required |
Compared with LTC2916CTS8-1#TRMPBF, the LTC2915CTS8-1#TRMPBF provides critical tolerance selection for margin testing but omits manual reset; versus LTC2903CS6#TRMPBF, it trades ultra-low IQ for full programmability and automotive-grade temperature support - making it optimal for complex, multi-rail industrial and automotive systems.
Availability
LTC2915CTS8-1#TRMPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, medical infusion pump controllers, and telecom base station power management requiring stable component supply with guaranteed long-term availability.
Supply support for LTC2915CTS8-1#TRMPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices acquired Linear Technology in 2017 and maintains its legacy precision analog portfolio, focusing on high-reliability signal conditioning, power management, and interface ICs for industrial, automotive, and aerospace markets.
The LTC2915 belongs to Linear's voltage supervisor product line, engineered specifically for robust power sequencing and reset generation in harsh environments - emphasizing threshold accuracy, glitch immunity, and extended temperature operation.
FAQ
What is the maximum supply voltage that can be applied to the VCC pin of the LTC2915CTS8-1#TRMPBF?
The absolute maximum VCC voltage is 5.7V. Exceeding this requires an external series current-limiting resistor because the part integrates a 6.2V shunt regulator. For example, when operating from a 12V automotive supply, a ~11kΩ resistor limits VCC current to ≤5mA. The LTC2915CTS8-1#TRMPBF datasheet specifies VCC must remain ≤5.7V unless properly derated with external resistance.
How does the LTC2915CTS8-1#TRMPBF achieve ±1.5% threshold accuracy across temperature?
The LTC2915CTS8-1#TRMPBF uses laser-trimmed internal resistor dividers and a curvature-corrected bandgap reference to maintain ±1.5% accuracy from –40°C to 125°C. This is verified across production lots and guaranteed in the Electrical Characteristics table - enabling reliable reset behavior without external calibration. Each LTC2915CTS8-1#TRMPBF unit meets this spec under full temperature stress testing.
Can the LTC2915CTS8-1#TRMPBF monitor a 1V supply, and what configuration is required?
Yes - configure SEL1 = GND and SEL2 = Open to select the 1V nominal threshold, then set TOL = VCC for –5% tolerance (0.95V trip point). The LTC2915CTS8-1#TRMPBF supports this directly from its internal matrix; no external components are needed. Accuracy remains ±1.5% of 1V (±15mV), validated over the full operating temperature range.
What is the purpose of the RT pin on the LTC2915CTS8-1#TRMPBF, and how is it configured for 200ms timeout?
The RT pin controls reset timeout duration. To achieve the standard 200ms internal timeout, tie RT directly to VCC. This disables external capacitor dependency and activates the internal timer. The LTC2915CTS8-1#TRMPBF datasheet confirms tRST(INT) = 150–260ms at TA = 25°C, with full-range guarantee of 150–260ms across –40°C to 125°C.
Does the LTC2915CTS8-1#TRMPBF support adjustable threshold monitoring, and how is it implemented?
Yes - set SEL1 = GND and SEL2 = GND to enable ADJ mode, where VM becomes a high-impedance input referenced to 0.5V. An external resistive divider scales the monitored supply so VM = 0.5V at nominal voltage; tolerance is applied relative to that point. The LTC2915CTS8-1#TRMPBF achieves ±1.5% accuracy on the resulting trip point, supporting custom thresholds like 2.7V or 4.1V with appropriate divider design.
LTC2915CTS8-1#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 27 Selectable Threshold Combinations
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
LTC2915CTS8-1#TRMPBF FAQ
1.How can I place an order for LTC2915CTS8-1#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2915CTS8-1#TRMPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC2915CTS8-1#TRMPBF reliable?
The price and inventory of LTC2915CTS8-1#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2915CTS8-1#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC2915CTS8-1#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2915CTS8-1#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2915CTS8-1#TRMPBF?
LTC2915CTS8-1#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2915CTS8-1#TRMPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC2915CTS8-1#TRMPBF?
For technical support, including LTC2915CTS8-1#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2915CTS8-1#TRMPBF requirements.
6.How does Aetrix verify that LTC2915CTS8-1#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC2915CTS8-1#TRMPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC2915CTS8-1#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC2915CTS8-1#TRMPBF?
All LTC2915CTS8-1#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2915CTS8-1#TRMPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC2915CTS8-1#TRMPBF part is unused and in its original packaging.
Return procedure for LTC2915CTS8-1#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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