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Analog Devices Inc. LTC2960IDC-2
- Part No.:
- LTC2960IDC-2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC2960IDC-2.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,956
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Product details
Overview
LTC2960IDC-2 from Analog Devices (formerly Linear Technology) is a nano-current, high-voltage two-input voltage supervisor IC designed for multicell battery monitoring and system reset control. It features 850nA quiescent current, ±1.5% threshold accuracy over –40°C to +85°C, adjustable ADJ/IN– reset thresholds via external resistive dividers, and 36V open-drain RST/OUT outputs. It is used in battery-powered equipment requiring reliable brown-out detection and manual reset initiation.
For engineers reviewing the LTC2960IDC-2 datasheet, LTC2960IDC-2 pinout, LTC2960IDC-2 application, or LTC2960IDC-2 equivalent, key selection criteria include its 36V open-drain output capability, IN– input configuration for overvoltage/undervoltage monitoring, 15ms/200ms selectable reset timeout, –40°C to +85°C industrial temperature range, and compatibility with high-voltage battery stacks up to 36V.
Technical Context
The LTC2960IDC-2 implements dual-comparator supervision: one dedicated ADJ input for primary reset threshold detection with 2.5% hysteresis, and a second IN– input configured for inverting threshold detection-enabling overvoltage and undervoltage monitoring of the same rail. Its RT pin selects between 15ms and 200ms reset timeout periods after threshold recovery.
It operates across 2.5V to 36V VCC, draws only 850nA typical supply current at 36V, and supports manual reset assertion via MR input with <20µs pulse width detection. Outputs are 36V-tolerant open-drain types, compatible with pull-up voltages exceeding VCC, and guaranteed functional down to VCC = 1.2V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Operating Range | 2.5V to 36V - enables direct monitoring of 8-cell Li-ion stacks or 24V industrial rails without level-shifting. |
| Quiescent Current | 850nA max at 36V - preserves battery life in always-on portable and remote sensor applications. |
| Reset Threshold Accuracy | ±1.5% over –40°C to +85°C - ensures reliable reset assertion across full industrial temperature range. |
| IN– Input Function | Inverting comparator input - detects both overvoltage (rising edge) and undervoltage (falling edge) on monitored rail. |
| Reset Timeout Options | 15ms or 200ms via RT pin - provides flexibility for fast recovery or noise-immune delay in noisy power environments. |
| Output Type | 36V open-drain RST and OUT - allows pull-up to any logic voltage ≤36V, including higher than VCC. |
| Manual Reset Pulse Width | ≥20µs minimum - supports robust push-button interface with minimal debounce circuitry. |
Pinout & Package
Package: 8-lead (2mm × 2mm) plastic DFN (DC8), exposed pad (optional GND connection), –40°C to +85°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main power supply input | Accepts 2.5V–36V; UVLO disables outputs below 1.85V; bypass with 0.1µF capacitor required. |
| RT | Reset timeout select input | Tie to GND for 15ms timeout, to VCC for 200ms timeout; internal 1µA pull-up ensures defined state if floating. |
| RST | Primary reset output | 36V open-drain; pulled low when ADJ falls below threshold; released after timeout and hysteresis recovery. |
| OUT | Secondary status output | 36V open-drain; pulled low when IN– rises above threshold (overvoltage) or falls below threshold minus hysteresis (undervoltage). |
| IN– | Inverting threshold input | Configured with external resistor divider; monitors rising/falling edges for dual-direction voltage violation detection. |
| ADJ | Adjustable reset threshold input | Primary supervisor input; tied to resistive divider to set falling reset threshold (e.g., 6.0V battery low warning). |
| MR | Manual reset input | Active-low; asserts RST immediately when pulled low; releases after timeout period upon return to high. |
| GND | Device ground reference | Common return for VCC, inputs, and outputs; exposed pad may be connected to PCB GND for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-threshold supervision | ADJ for primary reset + IN– for secondary over/undervoltage detection - eliminates need for separate comparators in battery safety circuits. |
| Nano-power operation | 850nA max ICC at 36V - extends shelf life and runtime in energy-constrained IoT sensors and backup systems. |
| 36V-tolerant open-drain outputs | RST/OUT withstand 40V absolute max - enables direct interface with 24V/36V industrial buses and high-side FET gate drivers. |
| Selectably timed reset recovery | 15ms or 200ms timeout via RT pin - balances fast system restart against immunity to transient supply dips. |
| Industrial temperature grade | –40°C to +85°C operation - qualified for automotive cabin, industrial control, and outdoor battery storage applications. |
| Manual reset with glitch immunity | 20µs minimum MR pulse width + built-in filtering - rejects ESD-induced noise while supporting simple push-button hardware. |
Applications
| Portable Medical Monitor | Battery-Powered Security Sensor |
|---|---|
Use Scenario: Wearable ECG device powered by dual-cell Li-ion (7.4V nominal) with real-time data logging and BLE transmission. IC Role / Device Role / Timing Role: LTC2960IDC-2 supervises battery voltage, triggers controlled shutdown at 6.0V (ADJ) and flags overvoltage at 8.4V (IN–) to prevent cell damage. Use Value: Nano-current draw extends operational time between charges; dual-threshold detection enables safe charge termination and deep-discharge prevention. |
Use Scenario: Wireless door/window sensor with coin-cell backup, detecting tampering and reporting low battery before communication failure. IC Role / Device Role / Timing Role: LTC2960IDC-2 monitors main 3.3V regulator output (via ADJ) and battery voltage (via IN–), asserting RST on brown-out and OUT on battery depletion. Use Value: 36V open-drain outputs interface directly with 3.3V MCU GPIO and 5V RF transceiver; 15ms timeout enables rapid wake-up after brief power interruption. |
| Automotive Telematics Unit | Industrial Battery Backup System |
Use Scenario: LTE-connected vehicle tracker operating across 9V–16V automotive battery range, requiring cold-crank immunity and ignition-off monitoring. IC Role / Device Role / Timing Role: LTC2960IDC-2 uses IN– to detect battery overvoltage (>15.5V) during alternator regulation and ADJ to assert reset below 9.0V during cranking. Use Value: 2.5% hysteresis prevents chattering during engine start; 36V tolerance eliminates need for external clamping diodes on VCC. |
Use Scenario: PLC I/O module with supercapacitor backup, maintaining volatile register state during AC mains loss. IC Role / Device Role / Timing Role: LTC2960IDC-2 monitors 12V DC bus (ADJ) and supercap voltage (IN–), generating early warning (OUT) and hard reset (RST) with 200ms timeout for graceful save. Use Value: Selectable 200ms timeout ensures sufficient time for EEPROM write completion; open-drain outputs drive optocouplers directly without level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326US29D3+T | Fixed 2.93V reset threshold; no secondary comparator; 3-pin SOT23 package; 1.6µA ICC. | Single-threshold only; suited for simple microcontroller reset, not dual-rail monitoring. | Choose for cost-sensitive, space-constrained designs where only primary reset is needed and threshold is fixed. |
| TPS3808G18DBVR | Fixed 1.8V threshold; push-pull output; 1.1µA ICC; includes watchdog timer; 5-pin SOT23. | Lacks IN– functionality and 36V tolerance; requires DVDD ≤6V; no overvoltage detection capability. | Prefer when integrating watchdog functionality and interfacing with low-voltage MCUs; unsuitable for >6V monitoring rails. |
Compared with MAX6326US29D3+T and TPS3808G18DBVR, the LTC2960IDC-2 uniquely delivers dual-threshold supervision, 36V open-drain outputs, nano-power operation, and industrial temperature range - making it the only option capable of replacing discrete comparator-based supervisors in high-voltage battery management.
Availability
LTC2960IDC-2 is available at Aetrix Electronics and suitable for battery-powered security sensors, portable medical monitors, automotive telematics units, and industrial battery backup systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC2960IDC-2 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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and automotive markets.
The LTC2960 product line was designed specifically for ultra-low-power, high-voltage system supervision in battery-critical applications - emphasizing nano-current operation, wide input range, and flexible dual-comparator architecture.
FAQ
What is the function of the IN– input on the LTC2960IDC-2?
The IN– input on the LTC2960IDC-2 is an inverting comparator threshold input that detects both overvoltage (when the monitored voltage rises above the programmed threshold) and undervoltage (when it falls below the threshold minus hysteresis). This enables single-rail dual-direction monitoring - for example, flagging battery overcharge at 8.4V and deep discharge at 6.0V - without external components. The LTC2960IDC-2 uses this capability to generate the OUT signal accordingly.
How does the RT pin affect reset timing in the LTC2960IDC-2?
The RT pin on the LTC2960IDC-2 selects the reset timeout period: tying RT to GND configures a 15ms delay, while tying RT to VCC selects 200ms. This timeout determines how long RST remains low after the ADJ input recovers above threshold. The LTC2960IDC-2 guarantees this timing across –40°C to +85°C, with typical variation of ±20% over temperature - critical for balancing noise immunity and system responsiveness.
Can the LTC2960IDC-2 monitor voltages higher than 36V?
No - the LTC2960IDC-2 VCC and RT/MR pins have an absolute maximum rating of 40V, and the ADJ/IN+/IN– inputs are limited to 3.5V. To monitor higher voltages (e.g., 150V bus), external protection is required: a series current-limiting resistor and 30V Zener clamp (as shown in Linear's Figure 7a) must be used to ensure the ADJ/IN– node never exceeds 3.5V. The LTC2960IDC-2 itself cannot directly supervise >36V rails.
What is the purpose of the manual reset (MR) input on the LTC2960IDC-2?
The MR input on the LTC2960IDC-2 provides external, active-low assertion of the RST output - allowing hardware-initiated system reset independent of monitored voltage conditions. When MR is pulled low, RST goes low immediately and remains low for the full selected reset timeout period (15ms or 200ms) after MR returns high. This enables push-button reset, firmware-controlled shutdown sequencing, or integration with other system fault signals in the LTC2960IDC-2 design.
Does the LTC2960IDC-2 require external passive components for basic operation?
Yes - the LTC2960IDC-2 requires at minimum a 0.1µF ceramic capacitor between VCC and GND for supply decoupling. External resistive dividers are mandatory to set ADJ and IN– thresholds (e.g., R1/R2 for ADJ, R3/R4 for IN–). No pull-up resistors are needed for RST/OUT since they are open-drain, but external pull-ups to the desired logic voltage (≤36V) are required for proper signal definition. The LTC2960IDC-2 functions reliably with these minimal components.
LTC2960IDC-2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x2)
LTC2960IDC-2 FAQ
1.How can I place an order for LTC2960IDC-2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2960IDC-2 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 LTC2960IDC-2 reliable?
The price and inventory of LTC2960IDC-2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2960IDC-2 is usually 5 days.
3.What payment methods are accepted for LTC2960IDC-2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2960IDC-2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2960IDC-2?
LTC2960IDC-2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2960IDC-2 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 LTC2960IDC-2?
For technical support, including LTC2960IDC-2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2960IDC-2 requirements.
6.How does Aetrix verify that LTC2960IDC-2 is sourced from the original manufacturer or authorized distributors?
All LTC2960IDC-2 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 LTC2960IDC-2 meets industry standards.
7.What is the process for return or replacement of LTC2960IDC-2?
All LTC2960IDC-2 units undergo pre-shipment inspection (PSI). If there is an issue with LTC2960IDC-2, 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 LTC2960IDC-2 part is unused and in its original packaging.
Return procedure for LTC2960IDC-2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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