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Analog Devices Inc. LTC2910IGN#TRPBF
- Part No.:
- LTC2910IGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2910IGN#TRPBF.pdf
- Description:
- IC SUPERVISOR 8 CHANNEL 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,875
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Product details
Overview
LTC2910IGN#TRPBF from Analog Devices (acquired Linear Technology) is an octal-input voltage supervisor IC designed for precise undervoltage monitoring of multiple positive and negative supply rails in complex power systems. It features eight 0.5V threshold comparators with ±1.5% accuracy over –40°C to +85°C, glitch-filtered reset outputs, adjustable timeout via external capacitor, and pin-selectable polarity for V7/V8 inputs. It is used in server motherboard power sequencing and multi-rail FPGA/ASIC core-I/O monitoring.
For engineers reviewing the LTC2910IGN#TRPBF datasheet, LTC2910IGN#TRPBF pinout, LTC2910IGN#TRPBF application, or LTC2910IGN#TRPBF equivalent, key selection criteria include guaranteed RST/RST assertion at VCC ≥ 1V, buffered 1V reference output, open-drain dual reset outputs with internal weak pull-ups, and support for both positive- and negative-supply monitoring without external components on SEL.
Technical Context
The LTC2910IGN#TRPBF integrates eight independent voltage comparators referenced to a precision 0.5V internal threshold, each with input leakage ≤±30nA and propagation delay of 50–500μs. Its three-state SEL pin configures V7/V8 polarity (positive/positive, positive/negative, or negative/negative), enabling flexible rail monitoring without external resistors for polarity selection.
It includes a shunt-regulated VCC input (6.2–7.0V max), a programmable reset timeout (6–14ms with 1nF), and UVLO activation at 1.9–2.1V with 5–50mV hysteresis. The buffered 1V REF output sources/sinks ±1mA and drives up to 1nF capacitive load, supporting accurate negative-rail sensing via resistor divider networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Count | 8 independent voltage monitor inputs (V1–V8) |
| Threshold Accuracy | ±1.5% over –40°C to +85°C - ensures reliable trip point across industrial temperature range |
| Quiescent Current | 50μA typical - enables low-power system supervision without significant standby drain |
| RST/RST Output Type | Open-drain with internal weak pull-up to VCC - supports wired-OR reset buses and level-shifting |
| Reset Timeout Range | 6–14ms (with 1nF TMR capacitor) - provides configurable reset pulse width for processor boot stabilization |
| VCC Operating Range | 2.3V to 6V direct supply; >6V requires external current-limiting resistor - simplifies design for 3.3V/5V systems |
| REF Output Voltage | 0.985–1.020V over full temperature range - stable reference for negative-rail divider biasing |
Pinout & Package
Package: 16-lead GN16 plastic SSOP (narrow, 0.150-inch width), RoHS-compliant, lead-free (#PBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V1–V6 (Pins 1–6) | Positive-voltage monitor inputs | Assert reset when input falls below 0.5V; tied to VCC if unused |
| V7, V8 (Pins 7–8) | Polarity-configurable monitor inputs | Behavior set by SEL: positive (UV when <0.5V) or negative (UV when >0.5V) |
| VCC (Pin 16) | Supply input / shunt regulator | Operates as direct supply ≤6V; acts as 6.2–7.0V shunt above 6V with external series resistor |
| RST, RST (Pins 11–12) | Complementary open-drain reset outputs | RST low = fault active; RST high = fault active; both asserted during UVLO (VCC <2.1V) |
| REF (Pin 10) | Buffered 1V reference output | Sources/sinks ±1mA; drives negative-monitoring dividers; unstable beyond 1nF load |
| SEL (Pin 14) | Three-state polarity select | GND = both V7/V8 negative; open = V7 positive/V8 negative; VCC = both positive |
| DIS (Pin 13) | Reset disable input | Pull high to inhibit RST/RST assertion except during VCC UVLO; internal 2μA pull-down |
| TMR (Pin 15) | Reset timeout capacitor connection | CTMR = 1nF → 8.5ms timeout; tie to VCC to bypass timer |
Key Features
| Feature | Design Value |
|---|---|
| Octal monitoring with ±1.5% threshold accuracy | Enables simultaneous supervision of 8 rails (e.g., 12V, 5V×2, 3.3V×2, 2.5V, 1.8V, 1.2V) with tight margin control |
| Pin-selectable polarity for V7/V8 | Eliminates external logic or resistors to monitor negative supplies like –5V or –3.3V |
| Guaranteed operation down to VCC = 1V | Ensures valid reset signaling during brown-out and power-down sequences |
| Glitch-filtered comparator outputs | Rejects short transients without adding hysteresis-induced trip-point error |
| Adjustable reset timeout (6–14ms) | Allows tuning reset pulse width to match processor/microcontroller minimum reset hold time |
| Buffered 1V reference with ±1mA drive | Provides stable bias for negative-rail sensing networks without external op-amp or reference IC |
Applications
| Server Power Sequencing | FPGA Core & I/O Rail Monitoring |
|---|---|
|
Use Scenario: Monitoring 12V, 5V, 3.3V, 2.5V, 1.8V, and 1.2V rails on a dual-socket server motherboard during cold start and hot-swap events. IC Role / Device Role / Timing Role: LTC2910IGN#TRPBF acts as centralized voltage supervisor, asserting RST until all rails stabilize within tolerance, then holding reset for 8.5ms before release. Use Value: Prevents CPU/FPGA configuration lockup by ensuring all supplies meet timing and voltage specs prior to release of POR signal. |
Use Scenario: Supervising separate 1.2V core and 3.3V I/O supplies for a Xilinx Kintex-7 FPGA, including detection of negative bias on auxiliary analog rails. IC Role / Device Role / Timing Role: LTC2910IGN#TRPBF monitors V1–V6 for positive rails and uses SEL=open to configure V7/V8 for –1.2V and –3.3V monitoring via REF-biased dividers. Use Value: Eliminates need for discrete comparators and reference ICs, reducing BOM count and PCB area by >40% vs. discrete solution. |
| Industrial PLC Controller | Network Switch ASIC Power Management |
|
Use Scenario: Ensuring clean startup of 24V backplane, 5V logic, 3.3V PHY, and isolated –5V analog sensor bias in an IP67-rated PLC module. IC Role / Device Role / Timing Role: LTC2910IGN#TRPBF uses DIS pin to gate reset during firmware-controlled safe shutdown, while maintaining UVLO response to catastrophic VCC collapse. Use Value: Enables deterministic fail-safe behavior: hardware reset on supply fault, software-gated reset on controlled stop - no race conditions. |
Use Scenario: Validating 48V-to-12V intermediate bus, 12V switch ASIC core, 3.3V SerDes, and –3.3V clock buffer supplies in a 10G Ethernet switch line card. IC Role / Device Role / Timing Role: LTC2910IGN#TRPBF monitors all rails with CTMR=22nF to extend timeout to 200ms, accommodating slow-ramping intermediate bus converters. Use Value: Guarantees ASIC remains held in reset until all supplies settle - prevents metastability and latch-up during multi-stage power-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2914IMS#TRPBF | Quad UV/OV monitor with two negative inputs; includes OV detection capability not present in LTC2910IGN#TRPBF | Required where overvoltage protection (e.g., 5V rail >5.5V) is mandated alongside undervoltage | Select LTC2914IMS#TRPBF only if OV monitoring is required; otherwise LTC2910IGN#TRPBF offers lower cost and simpler configuration for UV-only use cases |
| LTC2908IDDB#TRPBF | Six-supply monitor (four fixed, two adjustable); smaller 8-pin DDB package; no negative monitoring or SEL pin | Suitable for space-constrained designs with ≤6 rails and no negative supplies | Choose LTC2908IDDB#TRPBF for compact, low-pin-count UV monitoring; LTC2910IGN#TRPBF preferred when octal count, negative rail support, or SSOP footprint is needed |
Compared with LTC2914IMS#TRPBF and LTC2908IDDB#TRPBF, the LTC2910IGN#TRPBF uniquely balances octal channel count, integrated negative monitoring, and industrial temperature rating in a standard SSOP package-making it optimal for multi-rail server, telecom, and industrial control applications where UV-only supervision suffices.
Availability
LTC2910IGN#TRPBF is available at Aetrix Electronics and suitable for server motherboard power sequencing, FPGA/ASIC core-I/O monitoring, and industrial PLC controller applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2910IGN#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) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC2910IGN#TRPBF belongs to ADI's precision power supervision product line, engineered specifically for high-reliability, multi-rail voltage monitoring in computing, networking, and industrial systems where accuracy, low quiescent current, and flexible polarity configuration are critical.
FAQ
What is the operating temperature range of the LTC2910IGN#TRPBF?
The LTC2910IGN#TRPBF is rated for –40°C to +85°C ambient operation, as indicated by the "I" grade in its part number. This industrial temperature range ensures reliable performance in server chassis, network equipment, and factory automation environments where thermal margins are constrained.
Does the LTC2910IGN#TRPBF support monitoring of negative supply voltages?
Yes, the LTC2910IGN#TRPBF supports negative supply monitoring on V7 and V8 inputs using its three-state SEL pin. When SEL is left open, V7 operates as a positive monitor (<0.5V triggers reset) and V8 as a negative monitor (>0.5V triggers reset), enabled by the internal buffered 1V REF output used as a bias reference in the external resistor divider.
What is the minimum VCC voltage required for valid RST/RST output assertion in the LTC2910IGN#TRPBF?
The LTC2910IGN#TRPBF guarantees RST low and RST high assertion down to VCC = 1V. Below 2.0V, the device enters undervoltage lockout (UVLO) mode, forcing immediate reset assertion independent of input voltages - a critical feature for robust brown-out detection during power-down sequences.
How is the reset timeout period configured on the LTC2910IGN#TRPBF?
The reset timeout period of the LTC2910IGN#TRPBF is set by connecting an external capacitor (CTMR) between the TMR pin (Pin 15) and GND. With CTMR = 1nF, the timeout is 8.5ms; scaling follows tRST ≈ 9ms/nF. Tying TMR to VCC disables the timeout, causing instantaneous reset deassertion once all inputs recover.
Can the LTC2910IGN#TRPBF be used with supply voltages higher than 6V?
Yes - the LTC2910IGN#TRPBF includes an internal 6.2–7.0V shunt regulator on the VCC pin. For supplies >6V, a series current-limiting resistor must be added to restrict ICC to ≤10mA. The resistor value is selected based on the difference between supply voltage and the shunt voltage, ensuring compliance with absolute maximum ratings.
LTC2910IGN#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
LTC2910IGN#TRPBF FAQ
1.How can I place an order for LTC2910IGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2910IGN#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 LTC2910IGN#TRPBF reliable?
The price and inventory of LTC2910IGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2910IGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2910IGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2910IGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2910IGN#TRPBF?
LTC2910IGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2910IGN#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 LTC2910IGN#TRPBF?
For technical support, including LTC2910IGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2910IGN#TRPBF requirements.
6.How does Aetrix verify that LTC2910IGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2910IGN#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 LTC2910IGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2910IGN#TRPBF?
All LTC2910IGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2910IGN#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 LTC2910IGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC2910IGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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