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Analog Devices Inc. LTC2914CGN-1#TRPBF
- Part No.:
- LTC2914CGN-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC2914CGN-1#TRPBF.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,115
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Product details
Overview
LTC2914CGN-1#TRPBF from Analog Devices (formerly Linear Technology) is a quad-input undervoltage/overvoltage supervisor IC designed for simultaneous monitoring of four independent power rails in computing and server systems. It features ±1.5% threshold accuracy over temperature, 62µA quiescent current, adjustable reset timeout via external capacitor, and support for both positive and negative voltage monitoring using a buffered 1V reference. It is used in desktop/notebook computers and network servers to ensure reliable power-on reset and fault detection.
For engineers reviewing the LTC2914CGN-1#TRPBF datasheet, LTC2914CGN-1#TRPBF pinout, LTC2914CGN-1#TRPBF application, or LTC2914CGN-1#TRPBF equivalent, key selection criteria include guaranteed OV/UV assertion at VCC ≥ 1V, latching OV output (LTC2914-1 variant), polarity-selectable inputs via three-state SEL pin, and compatibility with 16-lead SSOP packaging for legacy board layouts.
Technical Context
The LTC2914CGN-1#TRPBF implements four independent comparator pairs (VHn/VLn) sharing common open-drain UV and OV outputs, with internal 0.5V threshold reference scaled by external resistor dividers. Its architecture supports dual-polarity monitoring: SEL pin state selects whether VH3/VL3 and VH4/VL4 monitor positive or negative supplies, enabling up to two negative rail detections.
It integrates a 1V buffered reference (±1.5% over temperature), VCC shunt regulator (6.6V typical), and glitch-filtered timing logic that enforces minimum timeout periods after fault clearance. The LTC2914-1 variant provides OV latch functionality via LATCH pin, while UV remains non-latching with adjustable delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 6V direct supply; internal 6.6V shunt enables operation up to 16V with series resistor |
| Threshold Accuracy | ±1.5% over full operating temperature range (0°C to 70°C for CGN grade) |
| Quiescent Current | 62µA typical - enables micropower system-level monitoring without significant load |
| Reference Output | 1V buffered reference (±1.5% over temp), ±1mA drive capability, stable up to 1nF capacitive load |
| Input Voltage Range | VHn/VLn: –0.3V to 7.5V - supports direct connection to negative rails when configured with REF |
| Reset Timeout | Adjustable from ~6ms to >10s via external CTMR capacitor (e.g., 22nF → ~200ms) |
| Output Type | Open-drain UV/OV with weak internal pull-up to VCC and strong pull-down (≤0.15V @ 100µA, VCC = 1V) |
Pinout & Package
Package: 16-Lead Plastic SSOP (GN), 0°C to 70°C operating temperature range, exposed pad not present (DFN variant has exposed pad; SSOP does not).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VH1–VH4 | High-side voltage monitor inputs | Trigger UV when below 0.5V (positive mode); trigger OV when below 0.5V (negative mode, per SEL) |
| VL1–VL4 | Low-side voltage monitor inputs | Trigger OV when above 0.5V (positive mode); trigger UV when above 0.5V (negative mode, per SEL) |
| SEL | Three-state polarity select | Connect to VCC/GND/open to configure V3/V4 as positive/negative monitors per Table 1 |
| LATCH | OV latch clear/bypass control | Pull low to latch OV; pull high to clear latch and enable timeout-based OV behavior (LTC2914-1 function) |
| TMR | Reset timeout timer input | Capacitor to GND sets UV/OV hold time; tie to VCC to bypass timeout |
| REF | Buffered 1V reference output | Provides precision offset for negative-rail monitoring circuits; drives ≤1mA, stable to 1nF |
| UV / OV | Open-drain logic outputs | Assert low on fault; weak pull-up to VCC allows wired-OR and external pull-up flexibility |
| VCC / GND | Supply and ground terminals | VCC accepts 2.3–6V directly or higher via shunt; guaranteed UV/OV assertion down to VCC = 1V |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent UV/OV monitoring | Four VH/VL input pairs enable simultaneous supervision of 4 rails (e.g., 5V, 3.3V, 2.5V, 1.8V) with shared outputs |
| Configurable polarity monitoring | SEL pin selects positive/negative mode for V3/V4 inputs - eliminates need for external level-shifting circuitry |
| Latching OV output (LTC2914-1) | LATCH pin controls OV latch state: low = latch on fault, high = clear latch and enable timeout behavior |
| Glitch-immune timing architecture | Integrated low-pass filtering on comparator outputs prevents false triggering from transient noise without adding hysteresis error |
| Micropower operation | 62µA ICC enables integration into always-on power domains without compromising system efficiency |
Applications
| Desktop Computer Power Sequencing | Notebook Computer Battery Management |
|---|---|
Use Scenario: Monitoring core CPU, GPU, memory, and I/O voltages during cold boot and thermal throttling events. IC Role / Device Role / Timing Role: Quad UV/OV supervisor asserting system reset until all rails stabilize within ±10% tolerance windows. Use Value: Prevents firmware execution under marginal supply conditions using ±1.5% threshold accuracy and glitch immunity. | Use Scenario: Supervising battery charger output, system rail, DDR termination, and PCIe auxiliary voltages in space-constrained designs. IC Role / Device Role / Timing Role: Single-chip replacement for multiple discrete supervisors, reducing BOM count and PCB area in 16-pin SSOP footprint. Use Value: 62µA quiescent current extends battery standby time; adjustable TMR capacitor tailors reset pulse width to SoC requirements. |
| Network Server Core Voltage Monitoring | Industrial Embedded Controller Power Integrity |
Use Scenario: Ensuring clean startup of multi-phase VRMs supplying ASICs and FPGAs in 1U rack servers. IC Role / Device Role / Timing Role: Detecting undervoltage on 12V, 5V, 3.3V, and 1.8V rails with latched OV output to flag catastrophic overvoltage events. Use Value: LATCH pin enables persistent fault indication until operator intervention, improving system diagnostics and safety compliance. | Use Scenario: Validating isolated DC-DC converter outputs in programmable logic controllers with wide ambient temperature swings. IC Role / Device Role / Timing Role: Monitoring both positive and negative auxiliary rails (e.g., ±12V analog sections) using REF and SEL-configured inputs. Use Value: Eliminates need for separate negative-supply supervisors; ±1.5% accuracy over 0°C to 70°C ensures consistent trip points across industrial temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2915CGN-1#TRPBF | Same pinout and function, but with tighter ±0.75% threshold accuracy and extended –40°C to 85°C grade (IGN) | Required for industrial environments where wider temperature stability is critical | Select when higher accuracy and broader temp range justify cost premium |
| TPS3307-18DGNR | Triple-channel supervisor (not quad); fixed 1.8V/3.3V/5V thresholds; no negative rail support; 10-pin MSOP | Suitable only for simpler 3-rail systems without polarity flexibility or adjustable timeout | Choose only if design uses exactly three standard rails and space constraints favor smaller package |
Compared with LTC2915CGN-1#TRPBF, the LTC2914CGN-1#TRPBF trades accuracy and temperature range for lower cost and qualification in commercial-grade computing applications; compared with TPS3307-18DGNR, it provides true quad monitoring, negative rail capability, and field-programmable thresholds - making it irreplaceable in complex, multi-rail, mixed-polarity systems.
Availability
LTC2914CGN-1#TRPBF is available at Aetrix Electronics and suitable for desktop computers, notebook computers, and network servers requiring stable component supply with long-term industrial lifecycle support.
Supply support for LTC2914CGN-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. (ADI) is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies.
The LTC2914 product line delivers precision, low-power, multi-rail voltage supervision for computing, communications, and industrial systems - emphasizing configurability, accuracy, and robustness in noisy power environments.
FAQ
What is the operating temperature range for the LTC2914CGN-1#TRPBF?
The LTC2914CGN-1#TRPBF is rated for 0°C to 70°C operation, as indicated by the "C" grade suffix and GN package marking. This commercial-grade specification aligns with typical desktop and notebook computer ambient conditions. The device maintains ±1.5% threshold accuracy across this full range, verified per Electrical Characteristics table in the official datasheet. For extended temperature operation, consider the LTC2914IGN-1#TRPBF (–40°C to 85°C) or LTC2914HGN-1#TRPBF (–40°C to 125°C) variants.
Does the LTC2914CGN-1#TRPBF support negative voltage monitoring?
Yes, the LTC2914CGN-1#TRPBF supports monitoring of up to two negative voltages using its buffered 1V reference (REF pin) and three-state SEL pin. When SEL is grounded, VH3/VL3 and VH4/VL4 are configured for negative monitoring: VHn triggers OV when below 0.5V, and VLn triggers UV when above 0.5V. This eliminates external level shifters. The REF pin sources/sinks ±1mA and must be used as the reference node in the resistor divider network per Figure 2 in the datasheet.
How is the reset timeout period set on the LTC2914CGN-1#TRPBF?
The reset timeout period on the LTC2914CGN-1#TRPBF is set by connecting an external capacitor (CTMR) between the TMR pin and GND. The timeout scales linearly at ~9ms/nF (e.g., 22nF yields ~200ms). Tying TMR to VCC disables the timeout, causing immediate UV/OV deassertion after fault clearance. Minimum CTMR is 10pF; leakage must stay below 1.3µA. The relationship is validated in the Reset Timeout Period vs Capacitance graph (Figure 2914 G12) and confirmed in the Electrical Characteristics table (tUOTO = 6–14ms for CTMR = 1nF).
What is the function of the LATCH pin on the LTC2914CGN-1#TRPBF?
The LATCH pin on the LTC2914CGN-1#TRPBF controls the overvoltage output behavior specific to the -1 variant. When pulled low, OV latches low upon detection and remains asserted until LATCH is pulled high to clear it. When held high, OV behaves like UV - asserting low on fault and releasing after the adjustable timeout period. This pin is unused (no internal connection) on LTC2914-2 parts. Its function is explicitly defined in the Pin Functions section (page 7) and Block Diagram (page 8) of the LTC2914 datasheet.
Can the LTC2914CGN-1#TRPBF operate with a supply voltage below 2.3V?
Yes, the LTC2914CGN-1#TRPBF guarantees UV and OV assertion down to VCC = 1V, though full comparator functionality (VHn/VLn monitoring) activates only above VCC = 2V (max 2.1V UVLO threshold). Below 2V, the device enters undervoltage lockout (UVLO): UV asserts low and OV is blocked. At VCC = 1V, VOL on UV is guaranteed ≤0.15V at 100µA sink current. This enables fail-safe reset generation even during brown-out conditions, as confirmed in Absolute Maximum Ratings and Electrical Characteristics tables.
LTC2914CGN-1#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:
- 4
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
LTC2914CGN-1#TRPBF FAQ
1.How can I place an order for LTC2914CGN-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2914CGN-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 LTC2914CGN-1#TRPBF reliable?
The price and inventory of LTC2914CGN-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 LTC2914CGN-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2914CGN-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2914CGN-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2914CGN-1#TRPBF?
LTC2914CGN-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2914CGN-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 LTC2914CGN-1#TRPBF?
For technical support, including LTC2914CGN-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2914CGN-1#TRPBF requirements.
6.How does Aetrix verify that LTC2914CGN-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2914CGN-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 LTC2914CGN-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2914CGN-1#TRPBF?
All LTC2914CGN-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2914CGN-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 LTC2914CGN-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC2914CGN-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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