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Analog Devices Inc. LTC2912HTS8-1#TRPBF
- Part No.:
- LTC2912HTS8-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2912HTS8-1#TRPBF.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,739
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Product details
Overview
LTC2912HTS8-1#TRPBF from Analog Devices is a high-temperature single UV/OV voltage monitor IC designed for reliable power supply supervision in harsh environments. It features ±1.5% threshold accuracy, 29µA quiescent current, adjustable reset timeout via external capacitor (e.g., 8.5ms with 1nF), and operates from 2.3V to 6V supply or up to 48V via internal 6.2V shunt regulator. It is used in industrial servers and automotive control modules requiring stable reset signaling under thermal stress.
For engineers reviewing the LTC2912HTS8-1#TRPBF datasheet, LTC2912HTS8-1#TRPBF pinout, LTC2912HTS8-1#TRPBF application, or LTC2912HTS8-1#TRPBF equivalent, key selection criteria include guaranteed operation down to VCC = 1V, latch-controlled OV output, glitch-immune VH/VL inputs, and TSOT-23 package compatibility with high-temp PCB layouts.
Technical Context
The LTC2912HTS8-1#TRPBF implements dual comparator-based monitoring with independent UV and OV detection paths, each incorporating low-pass filtering to reject sub-50µs glitches. Its internal 6.2V shunt regulator enables direct connection to 12V/24V/48V rails when paired with an external series resistor limiting ICC to ≤10mA.
It uses a programmable TMR pin to set timeout duration (6–14ms range for H-grade at CTMR = 1nF), and features open-drain OV/UV outputs with weak internal pull-ups to VCC and strong active-low sink capability (VOL ≤ 0.15V at IUV = 100µA, VCC = 1V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 2.3V to 6V direct; up to 48V via 6.2V internal shunt regulator with current-limiting resistor |
| Threshold Accuracy | ±1.5% over full –40°C to +125°C operating range - ensures precise 3.3V ±10% monitoring without calibration |
| Quiescent Current | 29µA typical - enables always-on supervision in battery-backed or energy-constrained systems |
| Reset Timeout Range | 6ms to 14ms (H-grade) with 1nF TMR capacitor - provides configurable pulse width for system stabilization |
| Input Glitch Immunity | Rejects transients <50µs duration - eliminates false resets from switching noise or ESD coupling |
| Output Type | Open-drain UV and OV with weak VCC pull-up and strong ground sink - supports wired-OR reset buses and level-shifting |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and telecom base station use |
Pinout & Package
Package: 8-Lead Plastic TSOT-23 (TS8), 3mm × 1.75mm footprint, exposed pad not present (TSOT-23 variant), rated θJA = 195°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | LATCH | OV latch clear/bypass input; high = clears latch and enables timeout behavior identical to UV output |
| 2 | UV | Undervoltage logic output; open-drain, asserts low when VH input falls below threshold |
| 3 | OV | Overvoltage logic output; open-drain, latched low on VL overvoltage event (LTC2912-1 function) |
| 4 | GND | Device ground reference and return path for all internal circuits and TMR capacitor |
| 5 | TMR | Reset timeout timer input; connects to external capacitor (≥10pF) to GND to set delay period |
| 6 | VL | Voltage Low input; monitors rising edge above 0.5V threshold to detect overvoltage condition |
| 7 | VH | Voltage High input; monitors falling edge below 0.5V threshold to detect undervoltage condition |
| 8 | VCC | Supply input; accepts 2.3–6V directly or higher voltages via internal 6.2V shunt regulator |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed operation at VCC ≥ 1V | Enables valid reset assertion during brown-out or slow power ramp-up before full regulation |
| Adjustable timeout disable | TMR pin tied to VCC bypasses timer - allows immediate OV/UV assertion without delay |
| Power supply glitch immunity | Integrated low-pass filtering rejects brief transients without adding external RC networks |
| ±1.5% threshold accuracy over temperature | Eliminates need for external trimming in precision 3.3V ±10% or 5V ±10% monitoring |
| Open-drain outputs with weak VCC pull-up | Supports shared reset bus, mixed-voltage interfacing, and eliminates external pull-up resistors |
Applications
| Industrial Motor Drives | Automotive ADAS ECUs |
|---|---|
|
Use Scenario: Monitoring 12V battery rail and 5V MCU supply in engine bay-mounted motor controllers. IC Role / Device Role / Timing Role: Supervises dual-rail integrity and asserts synchronized reset if either rail deviates beyond ±10%. Use Value: Prevents erratic gate driver operation during cold cranking or load dump by guaranteeing reset until both supplies stabilize within tolerance. |
Use Scenario: Power sequencing and fault detection in radar sensor modules operating at –40°C to +125°C. IC Role / Device Role / Timing Role: Provides latch-controlled OV signal to halt RF transmission during overvoltage events on 3.3V analog supply. Use Value: Ensures functional safety compliance (ISO 26262 ASIL-B) by delivering deterministic reset timing with no false triggers from EMI. |
| Telecom Base Station PSU | Medical Imaging Power Subsystem |
|
Use Scenario: Monitoring 48V intermediate bus and derived 3.3V/1.8V rails in distributed power architecture. IC Role / Device Role / Timing Role: Uses internal shunt regulator to supervise 48V directly; generates timed reset pulses for FPGA configuration. Use Value: Reduces BOM count by eliminating discrete Zener + resistor network while maintaining ±1.5% trip accuracy across temperature. |
Use Scenario: Supervising isolated DC-DC converters powering X-ray detector ASICs in portable imaging devices. IC Role / Device Role / Timing Role: Detects undervoltage on 2.5V bias rail and holds system in reset until stable for >8ms post-recovery. Use Value: Prevents data corruption during transient supply dips caused by pulsed X-ray exposure, meeting IEC 62304 Class C requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2912ITS8-1#TRPBF | Same functionality and pinout; rated for –40°C to +85°C only | Not suitable for under-hood or high-ambient industrial deployments | Select when operating ambient stays below 85°C and cost sensitivity outweighs extended temp margin |
| LTC2913IDDB-1#TRPBF | Dual independent UV/OV monitor in DFN package; 10-pin; separate VCC pin | Supports two-rail monitoring without external resistor dividers; larger footprint | Choose when supervising both 3.3V and 1.8V rails simultaneously and board space permits DFN-10 |
Compared with LTC2912ITS8-1#TRPBF, the LTC2912HTS8-1#TRPBF delivers guaranteed operation at +125°C junction temperature - critical for sealed enclosures without forced cooling. Versus LTC2913IDDB-1#TRPBF, it offers lower cost and smaller TSOT-23 footprint but requires external resistive dividers for multi-rail use.
Availability
LTC2912HTS8-1#TRPBF is available at Aetrix Electronics and suitable for industrial motor drives, automotive ADAS ECUs, and telecom base station power supplies requiring stable component supply across extended temperature ranges.
Supply support for LTC2912HTS8-1#TRPBF 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2912 product line delivers micropower, precision voltage supervisors optimized for space-constrained, thermally demanding applications where reliability and threshold accuracy are critical.
FAQ
What is the maximum input voltage the LTC2912HTS8-1#TRPBF can monitor directly?
The LTC2912HTS8-1#TRPBF cannot monitor high voltages directly on VH or VL pins - those inputs are limited to 7.5V max. However, its VCC pin incorporates a 6.2V shunt regulator, enabling connection to 12V, 24V, or 48V supplies when used with an external current-limiting resistor to keep ICC ≤10mA. This allows indirect high-voltage supervision using resistive divider networks on VH/VL.
Does the LTC2912HTS8-1#TRPBF require external pull-up resistors on its OV and UV outputs?
No - the LTC2912HTS8-1#TRPBF includes weak internal pull-up resistors (~400kΩ) to VCC on both OV and UV pins, eliminating the need for external components in most applications. External pull-ups are only recommended if faster rise times are required or if the OV pin must maintain defined logic state at VCC < 1.5V, where internal pull-up strength diminishes.
How does the LATCH pin affect OV behavior in the LTC2912HTS8-1#TRPBF?
In the LTC2912HTS8-1#TRPBF, the LATCH pin controls OV output latching: when held low, OV latches low upon overvoltage detection and remains asserted until LATCH is pulled high. When LATCH is high, OV behaves like UV - asserting low for a programmable timeout after fault clearance. This enables flexible reset strategies: latched for critical faults, timed for transient recovery.
Can the LTC2912HTS8-1#TRPBF operate reliably during power-up from 1V supply?
Yes - the LTC2912HTS8-1#TRPBF guarantees UV assertion and OV pull-up activation down to VCC = 1V, ensuring valid reset signaling even during slow or brown-out power ramps. At VCC = 1V, UV VOL remains ≤0.15V at 100µA sink current, and OV exhibits weak but functional pull-up behavior, supporting fail-safe initialization in ultra-low-power systems.
What is the purpose of the TMR pin capacitor in the LTC2912HTS8-1#TRPBF circuit?
The TMR pin capacitor sets the UV/OV reset timeout duration: CTMR = tUOTO × 115 nF/ms. For example, a 1nF capacitor yields ~8.5ms timeout in H-grade devices. The capacitor must be ≥10pF and connected to GND; tying TMR to VCC disables the timer entirely, causing immediate OV/UV assertion upon fault detection - useful for applications requiring zero-delay reset response.
LTC2912HTS8-1#TRPBF 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:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
LTC2912HTS8-1#TRPBF FAQ
1.How can I place an order for LTC2912HTS8-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2912HTS8-1#TRPBF 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 LTC2912HTS8-1#TRPBF reliable?
The price and inventory of LTC2912HTS8-1#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2912HTS8-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2912HTS8-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2912HTS8-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2912HTS8-1#TRPBF?
LTC2912HTS8-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2912HTS8-1#TRPBF 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 LTC2912HTS8-1#TRPBF?
For technical support, including LTC2912HTS8-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2912HTS8-1#TRPBF requirements.
6.How does Aetrix verify that LTC2912HTS8-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2912HTS8-1#TRPBF 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 LTC2912HTS8-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2912HTS8-1#TRPBF?
All LTC2912HTS8-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2912HTS8-1#TRPBF, 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 LTC2912HTS8-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC2912HTS8-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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