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Analog Devices Inc. LTC2910CDHC#TRPBF
- Part No.:
- LTC2910CDHC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2910CDHC#TRPBF.pdf
- Description:
- IC SUPERVISOR 8 CHANNEL 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,099
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Product details
Overview
LTC2910CDHC#TRPBF from Analog Devices (acquired Linear Technology) is an octal-input voltage supervisor IC designed for simultaneous monitoring of up to eight positive or negative supply rails in complex power systems. It features eight 0.5V threshold comparators with ±1.5% accuracy over 0°C to 70°C, glitch-filtered reset outputs (RST/RST), adjustable timeout via external capacitor (6–14 ms typical), and a buffered 1V reference. It is deployed in multi-rail server power supplies to ensure coordinated system reset upon any rail undervoltage.
For engineers reviewing the LTC2910CDHC#TRPBF datasheet, LTC2910CDHC#TRPBF pinout, LTC2910CDHC#TRPBF application, or LTC2910CDHC#TRPBF equivalent, this page delivers verified specifications, validated pin functions, real-world use cases for mixed-polarity monitoring, and confirmed alternative parts - all grounded in the official Linear Technology LTC2910 datasheet (2910fc) and package documentation.
Technical Context
The LTC2910CDHC#TRPBF integrates eight independent voltage comparators referenced to a precision 0.5V internal threshold, each with input leakage ≤±30 nA and propagation delay of 50–500 μs. Its three-state SEL pin configures V7/V8 polarity (positive/positive, positive/negative, or negative/negative), enabling flexible negative rail monitoring using the buffered 1V REF output.
Reset timing is controlled by an external capacitor on TMR (6–14 ms with 1 nF), while DIS disables RST/RST assertion except during VCC UVLO (1.9–2.1 V). The device operates from 2.3 V to 6 V directly or up to 16 V via internal 6.6 V shunt regulator, drawing only 50–100 μA quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Count | 8 independent voltage monitor inputs (V1–V8), supporting both positive and negative rail monitoring |
| Threshold Accuracy | ±1.5% over full operating temperature range (0°C to 70°C), ensuring reliable trip points across thermal conditions |
| Quiescent Current | 50 μA typical at 2.3–6 V supply, enabling low-power system supervision without burdening standby budgets |
| Reset Timeout Range | 6–14 ms (with 1 nF on TMR), providing configurable hold time for stable power-up sequencing |
| Reference Output | Buffered 1 V REF (±15 mV accuracy), capable of sourcing/sinking ±1 mA for negative-monitoring resistor dividers |
| VCC Operating Range | 2.3 V to 6 V direct supply; >6 V supported via internal 6.6 V shunt regulator with external current-limiting resistor |
| Output Type | Open-drain RST (active-low) and RST (active-high), each with guaranteed operation down to VCC = 1 V |
Pinout & Package
Package: 16-lead (5 mm × 3 mm) plastic DFN (DHC16), exposed pad (Pin 17) optional GND connection. Thermal resistance θJA = 43.5°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V1–V6 (Pins 1–6) | Positive-supply monitor inputs | Assert reset when voltage falls below 0.5 V; tied to VCC if unused |
| V7, V8 (Pins 7–8) | Polarity-configurable inputs | Behavior set by SEL: positive (UV when <0.5 V) or negative (UV when >0.5 V) |
| VCC (Pin 16) | Main supply input | Operates as direct supply (≤6 V) or shunt-regulated input (>6 V); bypass with ≥0.1 μF |
| RST (Pin 11) | Active-low open-drain reset | Pulls low after timeout when all inputs are valid; guaranteed operation ≥1 V VCC |
| RST (Pin 12) | Active-high open-drain reset | Pulls high after timeout; weak internal pull-up to VCC; supports wired-OR |
| REF (Pin 10) | Buffered 1 V reference output | Sources/sinks ±1 mA; drives ≤1 nF capacitive load; used for negative-rail divider offset |
| SEL (Pin 14) | Three-state polarity select | Connect to VCC/GND/open to configure V7/V8 as ++, +−, or −− polarity pairs |
| TMR (Pin 15) | Reset timeout capacitor terminal | CTMR ≥10 pF to GND sets delay (≈9 ms/nF); tie to VCC to disable timeout |
| DIS (Pin 13) | Reset output disable | Pull high to inhibit RST/RST assertion (except during VCC UVLO); internal 2 μA pull-down |
| GND (Pin 9) | Device ground reference | Primary return path for all analog and digital circuitry; connect to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Octal monitoring with polarity flexibility | Simultaneously supervises eight rails - six fixed-positive + two SEL-configurable - eliminating multiple discrete supervisors |
| ±1.5% threshold accuracy over temperature | Ensures consistent undervoltage detection across 0°C to 70°C without calibration or trimming |
| Glitch-filtered comparator outputs | Integrates comparator output before asserting reset, rejecting transients <400 μs (at 1% overdrive) |
| Adjustable reset timeout (6–14 ms) | External capacitor on TMR enables precise hold time tuning for diverse power-up settling requirements |
| 1 V buffered reference with ±1 mA drive | Enables accurate negative-rail monitoring without external op-amps or references |
| UVLO protection with hysteresis | Guarantees clean reset assertion during brownout (1.9–2.1 V trip, 5–50 mV hysteresis) |
Applications
| Server Power Sequencing | Industrial PLC I/O Voltage Monitoring |
|---|---|
|
Use Scenario: Monitoring 12 V, dual 5 V, dual 3.3 V, 2.5 V, 1.8 V, and 1.2 V rails in a 1U network server PSU. IC Role / Device Role / Timing Role: LTC2910CDHC#TRPBF acts as centralized octal supervisor, generating synchronized RST/RST signals only after all rails stabilize within tolerance. Use Value: Reduces BOM count vs. four dual-supervisors; eliminates timing skew between rail resets; supports hot-swap sequencing via DIS pin control. |
Use Scenario: Supervising isolated 24 V DC input, 5 V logic, 3.3 V MCU core, and –12 V analog bias in a modular PLC backplane. IC Role / Device Role / Timing Role: LTC2910CDHC#TRPBF monitors positive rails (V1–V6) and uses SEL-configured V7/V8 to supervise –12 V via REF-referenced divider. Use Value: Single-chip solution replaces discrete op-amp + comparator for negative rail; REF buffer ensures stable 1 V offset without loading error. |
| Desktop Motherboard Core/I/O Monitoring | Medical Imaging Power Subsystem |
|
Use Scenario: Tracking CPU VDD (1.2 V), GPU VDD (1.8 V), memory VDDQ (1.35 V), PCH 3.3 V/5 V, and auxiliary 12 V in a high-end desktop motherboard. IC Role / Device Role / Timing Role: LTC2910CDHC#TRPBF serves as primary system supervisor, asserting RST only after all critical rails exceed thresholds and timeout expires. Use Value: Tight 0.5 V threshold tolerance (±1.5%) prevents premature reset during rail ripple; low 50 μA ICC extends S5 suspend time. |
Use Scenario: Ensuring integrity of 48 V motor drive, 15 V analog front-end, ±5 V sensor bias, and 3.3 V FPGA core in MRI gradient amplifier module. IC Role / Device Role / Timing Role: LTC2910CDHC#TRPBF monitors 48 V (via shunt-regulated VCC), 15 V, +5 V, –5 V (V7/V8), 3.3 V, and two additional rails using external dividers. Use Value: Internal 6.6 V shunt allows direct 48 V input without external regulator; SEL polarity selection supports dual ±5 V monitoring with one IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2914CMS#TRPBF | Quad UV/OV monitor with two negative inputs; separate VCC pin; no buffered REF; 16-lead MSOP | Supports overvoltage detection on all channels; lacks integrated 1 V REF for negative-rail scaling | Choose LTC2914 when OV detection is required and REF buffering is handled externally |
| LTC2908IDD#TRPBF | Six-supply monitor (four fixed, two adjustable); 8-lead DDB; no polarity selection; no REF output | Smaller footprint but limited to positive-only monitoring; no negative rail support or REF buffer | Choose LTC2908 for space-constrained designs with only positive rails and no negative monitoring need |
Compared with LTC2910CDHC#TRPBF, LTC2914 offers OV capability but requires external REF for negative rails, while LTC2908 saves board area but cannot monitor negative supplies - making LTC2910CDHC#TRPBF uniquely suited for compact, mixed-polarity, REF-dependent applications.
Availability
LTC2910CDHC#TRPBF is available at Aetrix Electronics and suitable for server power sequencing, industrial PLC I/O monitoring, and medical imaging subsystems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LTC2910CDHC#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. (ADI) acquired Linear Technology in 2017 and maintains full product support, datasheets, and application engineering for legacy Linear parts including the LTC2910 family.
The LTC2910 belongs to Linear's precision voltage supervisor product line, engineered specifically for high-density, multi-rail power systems in computing, telecom, and industrial equipment where accuracy, low power, and mixed-polarity monitoring are critical.
FAQ
What is the operating temperature range for the LTC2910CDHC#TRPBF?
The LTC2910CDHC#TRPBF is rated for 0°C to 70°C ambient operation (Commercial grade). This is confirmed by the "C" suffix in the part number and specified in the Absolute Maximum Ratings table of the LTC2910 datasheet (2910fc, page 2). All key parameters - including threshold accuracy (±1.5%), supply current (50 μA), and reset timeout - are guaranteed across this full range.
Can the LTC2910CDHC#TRPBF monitor negative voltages, and how is it configured?
Yes, the LTC2910CDHC#TRPBF can monitor two negative voltages (V7 and V8) using its three-state SEL pin and buffered 1 V REF output. When SEL is left open, V7 remains positive-monitoring while V8 becomes negative-monitoring (trip occurs when V8 > 0.5 V). The REF pin provides the 1 V offset needed for the resistive divider - no external reference is required. Configuration details are in Table 1 and Figure 2 of the datasheet.
What is the minimum VCC voltage required for the LTC2910CDHC#TRPBF to assert valid reset outputs?
The LTC2910CDHC#TRPBF guarantees RST low and RST high operation down to VCC = 1 V, as stated in the Electrical Characteristics table (page 3, VCC(MIN) parameter). Below 1 V, functionality is not assured. Between 1 V and 2 V, only UVLO behavior is active; input comparators engage above VCC = 2 V (typical UVLO rising threshold is 2.0 V).
How is the reset timeout period set on the LTC2910CDHC#TRPBF, and what is its range?
The reset timeout period on the LTC2910CDHC#TRPBF is set by an external capacitor (CTMR) connected from Pin 15 (TMR) to GND. With CTMR = 1 nF, tRST = 8.5 ms typical (6–14 ms over temperature). The relationship is linear: tRST ≈ 9 ms/nF. Tying TMR to VCC disables the timeout entirely. Minimum CTMR is 10 pF; maximum is limited by capacitor leakage (<1.3 μA).
Does the LTC2910CDHC#TRPBF require external components for basic operation, and which pins can be left unconnected?
The LTC2910CDHC#TRPBF requires only a 0.1 μF bypass capacitor on VCC for stable operation. V1–V6 must be tied to VCC if unused; V7/V8 may be left open only if polarity configuration permits (per Table 1). SEL can be left unconnected (high-impedance state), DIS has an internal 2 μA pull-down so it may float, and REF should be left open unless used for negative monitoring. TMR requires either CTMR or connection to VCC.
LTC2910CDHC#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 8
- Voltage - Threshold:
- 8 Selectable Threshold Combinations
- Output:
- Open Drain or Open Collector
- Reset:
- Active High/Active Low
- Reset Timeout:
- 6ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x3)
LTC2910CDHC#TRPBF FAQ
1.How can I place an order for LTC2910CDHC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2910CDHC#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 LTC2910CDHC#TRPBF reliable?
The price and inventory of LTC2910CDHC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2910CDHC#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2910CDHC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2910CDHC#TRPBF transactions.
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4.How is shipping managed for LTC2910CDHC#TRPBF?
LTC2910CDHC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2910CDHC#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 LTC2910CDHC#TRPBF?
For technical support, including LTC2910CDHC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2910CDHC#TRPBF requirements.
6.How does Aetrix verify that LTC2910CDHC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2910CDHC#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 LTC2910CDHC#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2910CDHC#TRPBF?
All LTC2910CDHC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2910CDHC#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 LTC2910CDHC#TRPBF part is unused and in its original packaging.
Return procedure for LTC2910CDHC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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