My Inquiry
My Account
Analog Devices Inc. LTC2912CTS8-2#TRPBF
- Part No.:
- LTC2912CTS8-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2912CTS8-2#TRPBF.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,850
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2912CTS8-2#TRPBF from Analog Devices is a single-channel UV/OV voltage monitor IC in 8-lead TSOT-23 package, designed for precise power supply supervision with ±1.5% threshold accuracy, adjustable reset timeout (6–14 ms), and open-drain OV/UV outputs. It operates from 2.3V to 6V supply or higher via internal 6.2–7.3V shunt regulator, supports 1V minimum VCC operation, and features DIS pin for output disable-ideal for margining applications in server power rails.
For engineers reviewing the LTC2912CTS8-2#TRPBF datasheet, LTC2912CTS8-2#TRPBF pinout, LTC2912CTS8-2#TRPBF application, or LTC2912CTS8-2#TRPBF equivalent, key selection considerations include its dual independent UV/OV detection, 29µA quiescent current, glitch-immune input filtering, DIS-controlled output disable functionality, and compatibility with 3.3V ±10% and 48V supply monitoring topologies.
Technical Context
The LTC2912CTS8-2#TRPBF implements two independent comparators (VH for undervoltage, VL for overvoltage) with integrated low-pass filtering to reject sub-500µs glitches. Its DIS pin (Pin 1) enables synchronous disable of both OV and UV outputs-critical for system margin testing-while maintaining UVLO assertion during VCC < 2V.
Timing is governed by an external capacitor on TMR (Pin 5), setting UV/OV timeout from 6 ms (1 nF) to >10 s (10 µF); tying TMR to VCC bypasses timeout. The device guarantees valid OV/UV output behavior down to VCC = 1V, with VOL ≤ 0.15V at 100µA sink current and VOH ≥ 1V at –1µA source current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.3V to 6V direct; up to 48V via series resistor + internal 6.2–7.3V shunt regulator |
| Threshold Accuracy | ±1.5% over full temperature range - ensures reliable trip points for 3.3V ±10% or 5V ±10% rails |
| Quiescent Current | 29µA typical - enables always-on supervision in battery-backed or low-power systems |
| UV/OV Timeout Range | 6–14 ms with 1nF TMR capacitor - provides configurable reset pulse width for processor stabilization |
| Output Type | Open-drain OV and UV - supports wired-OR reset buses and level-shifting without external components |
| Minimum Valid VCC | 1V - guarantees functional reset assertion during brown-out or ultra-low-VCC startup sequences |
| DIS Input Threshold | VIL = 0.8V, VIH = 1.2V - compatible with standard CMOS logic and allows pull-down-free operation |
Pinout & Package
Package: 8-Lead Plastic TSOT-23 (TS8), 3mm × 1.75mm footprint, exposed pad not present (unlike DFN variant). Thermal resistance θJA = 195°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - DIS | Output Disable Control | Pulls OV/UV high when asserted; weak 2µA internal pull-down enables NC operation |
| 2 - UV | Undervoltage Logic Output | Open-drain active-low output; asserts low when VH < 0.5V; timeout-programmable hold |
| 3 - OV | Overvoltage Logic Output | Open-drain active-low output; asserts low when VL > 0.5V; timeout-programmable hold |
| 4 - GND | Ground Reference | Primary return path for all internal circuitry and output sinks |
| 5 - TMR | Reset Timeout Timer | Capacitor connection point (≥10pF to GND) sets UV/OV assertion duration; tie to VCC to bypass |
| 6 - VL | Overvoltage Sense Input | Comparator input referenced to 0.5V internal threshold; connect to low-side divider tap |
| 7 - VH | Undervoltage Sense Input | Comparator input referenced to 0.5V internal threshold; connect to high-side divider tap |
| 8 - VCC | Power Supply Input | Accepts 2.3–6V directly; regulates >6V supplies via internal 6.2–7.3V shunt; bypass with ≥0.1µF |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent UV/OV detection | Enables simultaneous monitoring of one rail's upper and lower limits using shared 0.5V reference |
| Glitch-immune comparator inputs | Integrated RC filtering rejects transients <500µs - eliminates false resets without hysteresis-induced error |
| Adjustable timeout with disable | DIS pin allows real-time suppression of OV/UV during system margining without affecting fault detection |
| Ultra-low quiescent current | 29µA operation enables permanent supervision in always-on subsystems without measurable power penalty |
| Wide VCC operating range | Functional from 1V to 6V (direct) or >6V (shunt-regulated) - supports legacy 3.3V, modern 1.8V, and industrial 24V/48V rails |
Applications
| Server Power Sequencing | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Monitoring 12V backplane supply in rack-mounted servers with tight ±5% tolerance requirements. IC Role / Device Role / Timing Role: LTC2912CTS8-2#TRPBF acts as primary UV/OV supervisor, asserting reset if voltage deviates beyond 11.4V/12.6V thresholds; DIS pin enables dynamic margin testing during validation. Use Value: Eliminates need for discrete comparator + timer + logic; ±1.5% accuracy avoids premature resets during transient load steps. |
Use Scenario: Supervising isolated 24V DC input to programmable logic controller I/O modules in factory automation. IC Role / Device Role / Timing Role: LTC2912CTS8-2#TRPBF monitors 24V rail via resistive divider, generating timed reset pulses to microcontroller upon undervoltage events; DIS pin disables outputs during firmware updates. Use Value: 29µA quiescent current extends backup battery life; guaranteed operation down to VCC = 1V ensures reset assertion during brown-out recovery. |
| Telecom Line Card Power | Medical Imaging Power Subsystem |
|
Use Scenario: Validating 48V telecom supply integrity before enabling downstream DC/DC converters in line cards. IC Role / Device Role / Timing Role: LTC2912CTS8-2#TRPBF interfaces with 48V rail through RZ current-limiting resistor and internal shunt regulator; TMR capacitor sets 85ms reset pulse per GR-63-CORE spec. Use Value: Internal 6.2–7.3V shunt eliminates external Zener; ±1.5% threshold accuracy meets Telcordia reliability requirements for power-good signaling. |
Use Scenario: Ensuring stable 3.3V and 5V supplies to FPGA and ADC subsystems in portable ultrasound equipment. IC Role / Device Role / Timing Role: LTC2912CTS8-2#TRPBF supervises critical 3.3V ±10% rail; UV/OV outputs drive OR'd reset bus shared with other supervisors; DIS pin isolates during self-test sequences. Use Value: Open-drain outputs enable safe reset bus sharing; 50Ω pull-down ensures <17ns fall time into 150pF load - meets FPGA reset timing budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2912CDDB-2#TRPBF | Same functionality and specs, but in 3mm × 2mm DFN package with exposed thermal pad (θJA = 55°C/W) | Better thermal performance for high-density PCBs; requires soldered exposed pad | Select for thermally constrained layouts where 195°C/W TSOT-23 θJA is insufficient |
| LTC2913IMS8#TRPBF | Dual independent UV/OV monitor (two channels); 10-lead MSOP; ±1.25% threshold accuracy; separate VCC pins | Supports monitoring of two distinct rails (e.g., 3.3V and 1.8V) with independent timeouts and DIS control per channel | Select when supervising multiple rails is required - avoids stacking two LTC2912CTS8-2#TRPBF units |
Compared with LTC2912CDDB-2#TRPBF, the LTC2912CTS8-2#TRPBF offers identical electrical performance in a smaller footprint but higher thermal resistance; compared with LTC2913IMS8#TRPBF, it provides half the channel count at lower cost and size, making it optimal for single-rail margining where space is premium.
Availability
LTC2912CTS8-2#TRPBF is available at Aetrix Electronics and suitable for server power sequencing, industrial PLC I/O modules, telecom line card power, and medical imaging power subsystems requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance.
Supply support for LTC2912CTS8-2#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 since 1965.
The LTC2912 family was designed specifically for precision, low-power, single-rail UV/OV supervision in space-constrained computing and infrastructure systems - emphasizing threshold accuracy, glitch immunity, and flexible timeout control.
FAQ
What is the function of the DIS pin on the LTC2912CTS8-2#TRPBF?
The DIS (Disable) pin on the LTC2912CTS8-2#TRPBF is Pin 1 and controls synchronous deactivation of both OV and UV outputs. When pulled high (≥1.2V), it forces OV and UV into high-impedance state with weak pull-up to VCC - essential for margining tests where fault responses must be temporarily suppressed. During VCC undervoltage lockout (UVLO), UV remains asserted low regardless of DIS state.
Can the LTC2912CTS8-2#TRPBF monitor a 48V supply directly?
No - the LTC2912CTS8-2#TRPBF cannot connect directly to 48V. Its VCC pin has an absolute maximum rating of 6V. To supervise 48V, a series current-limiting resistor must be used with the internal 6.2–7.3V shunt regulator. For example, a 200kΩ resistor limits current to ~200µA at 48V, keeping power dissipation within safe limits while enabling operation.
What is the minimum capacitor value required on the TMR pin of the LTC2912CTS8-2#TRPBF?
The minimum capacitor value required on the TMR pin of the LTC2912CTS8-2#TRPBF is 10pF. Values below this may cause unstable timeout behavior or failure to assert UV/OV outputs reliably. A 1nF capacitor yields a typical timeout of 8.5ms (6–14ms range depending on grade), and larger values scale linearly (e.g., 10nF ≈ 85ms).
How does the LTC2912CTS8-2#TRPBF ensure accurate voltage monitoring despite resistor tolerance errors?
The LTC2912CTS8-2#TRPBF achieves ±1.5% threshold accuracy over temperature, but overall trip point accuracy depends on external resistor tolerances. For a 3.3V ±10% rail, using 1% resistors in the 3-resistor divider yields UV trip uncertainty between 4.354V and 4.650V - tighter resistor tolerances (e.g., 0.1%) reduce this spread, while the LTC2912CTS8-2#TRPBF's internal reference remains stable.
Is the LTC2912CTS8-2#TRPBF pin-compatible with other variants like LTC2912CTS8-1#TRPBF?
Yes - all LTC2912CTS8-x variants (including LTC2912CTS8-1#TRPBF, LTC2912CTS8-2#TRPBF, and LTC2912CTS8-3#TRPBF) share identical 8-lead TSOT-23 pinouts and footprints. The only differences are internal logic: LTC2912CTS8-2#TRPBF adds DIS functionality, while LTC2912CTS8-1#TRPBF uses LATCH for OV latching. No PCB changes are needed when substituting within the same package.
LTC2912CTS8-2#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 High/Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
LTC2912CTS8-2#TRPBF FAQ
1.How can I place an order for LTC2912CTS8-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2912CTS8-2#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 LTC2912CTS8-2#TRPBF reliable?
The price and inventory of LTC2912CTS8-2#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2912CTS8-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2912CTS8-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2912CTS8-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2912CTS8-2#TRPBF?
LTC2912CTS8-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2912CTS8-2#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 LTC2912CTS8-2#TRPBF?
For technical support, including LTC2912CTS8-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2912CTS8-2#TRPBF requirements.
6.How does Aetrix verify that LTC2912CTS8-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2912CTS8-2#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 LTC2912CTS8-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2912CTS8-2#TRPBF?
All LTC2912CTS8-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2912CTS8-2#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 LTC2912CTS8-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC2912CTS8-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2912CTS8-2#TRPBF Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
