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Analog Devices Inc. LTC2960CDC-1
- Part No.:
- LTC2960CDC-1
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC2960CDC-1.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,058
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Product details
Overview
LTC2960CDC-1 from Analog Devices (formerly Linear Technology) is a nano-current, high-voltage two-input voltage supervisor IC designed for multicell battery monitoring and regulator UVLO in portable and automotive systems. It features 850nA quiescent current, 2.5V–36V VCC operating range, ±1.5% threshold accuracy over temperature, adjustable ADJ/IN+ reset thresholds, and 15ms/200ms selectable reset timeout. It operates in 0°C to 70°C ambient and delivers 36V open-drain RST/OUT outputs.
For engineers reviewing the LTC2960CDC-1 datasheet, LTC2960CDC-1 pinout, LTC2960CDC-1 application, or LTC2960CDC-1 equivalent, this page provides verified functional context, package-specific terminal roles, real-world timing behavior, and validated alternative options for battery-powered supervisory designs requiring ultra-low ICC and wide input voltage tolerance.
Technical Context
The LTC2960CDC-1 implements dual independent comparators: one monitors the ADJ input for reset assertion with 2.5% hysteresis and configurable timeout, while the second monitors IN+ for non-inverting voltage detection with 5% hysteresis. Its internal 400mV reference enables precise threshold setting via external resistive dividers across inputs ADJ and IN+.
It uses an open-drain output architecture with 36V-rated RST and OUT pins, supporting pull-up to voltages exceeding VCC. The RT pin selects reset timeout between 15ms (RT = GND) and 200ms (RT = VCC), and MR provides manual reset with 20µs minimum pulse width and internal 1µA pull-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.5V to 36V - supports direct connection to 12V/24V automotive rails and multicell Li-ion stacks without external regulators. |
| Quiescent Current | 850nA max at 36V and –40°C to 85°C - enables >10-year battery life in always-on monitoring applications. |
| Reset Threshold Accuracy | ±1.5% over –40°C to 125°C - ensures reliable brown-out detection across industrial temperature extremes. |
| ADJ Input Threshold | 400mV ±6mV - stable reference enabling accurate custom reset points via resistor dividers (e.g., 6.41V falling threshold). |
| Reset Timeout Options | 15ms or 200ms - selectable via RT pin; critical for accommodating processor initialization delays or avoiding false resets during supply transients. |
| Output Type | 36V open-drain RST/OUT - allows pull-up to logic supplies independent of VCC (e.g., 3.3V MCU I/O) or higher voltages up to 36V. |
| Input Leakage | ±1nA max at ADJ/IN+ - permits use of high-value divider resistors (e.g., 8MΩ total) with <1% error from leakage. |
Pinout & Package
Package: 8-lead (2mm × 2mm) plastic DFN (DC8), exposed pad optional for thermal relief or GND connection. Operating temperature range: 0°C to 70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Main power supply input | Accepts 2.5V–36V; powers internal circuitry; undervoltage lockout activates below 1.85V (rising) with 100mV hysteresis. |
| RT/DVCC | Reset timeout select input | Logic-level input: GND = 15ms timeout, VCC = 200ms timeout; no DVCC function on LTC2960-1 variants. |
| RST | Primary reset output | Open-drain, 36V-rated; pulls low when ADJ falls below threshold; releases after timeout + hysteresis recovery. |
| OUT | Secondary status output | Open-drain, 36V-rated; pulls low when IN+ falls below threshold; used for NMI, shutdown sequencing, or UVLO enable. |
| IN+ | Non-inverting comparator input | Monitors rising/falling voltage with 5% hysteresis; configured via resistor divider to detect overvoltage or low-battery conditions. |
| ADJ | Reset threshold adjustment input | Reference point for primary reset; tied to divider to set falling threshold (e.g., 6.33V); 400mV internal reference. |
| MR | Manual reset input | Active-low; internal 1µA pull-up; asserts RST low on falling edge; requires ≥20µs pulse width for reliable detection. |
| GND | Ground reference | System ground return; exposed pad (Pin 9) may be left floating or connected to PCB GND for improved thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Nano-power operation | 850nA max ICC enables multi-year runtime on coin cells or energy-harvesting sources in remote sensors. |
| Dual independent comparators | ADJ for reset and IN+ for auxiliary voltage monitoring allow simultaneous brown-out detection and low-battery warning without extra ICs. |
| Selectable reset timeout | 15ms/200ms via RT pin eliminates need for external RC timing networks and simplifies BOM for varying MCU startup requirements. |
| 36V open-drain outputs | RST/OUT tolerate up to 40V absolute max and support pull-up to any voltage ≤36V - ideal for interfacing with diverse logic families or high-side control. |
| High-accuracy threshold reference | 400mV ±6mV reference with ±1.5% system accuracy over temperature ensures consistent reset behavior across environmental stress. |
| Manual reset with glitch immunity | MR accepts push-button or logic signals; built-in 20µs pulse rejection prevents noise-induced false resets in noisy automotive or industrial environments. |
Applications
| Battery-Powered Portable Equipment | Automotive Battery Supervision |
|---|---|
Use Scenario: Monitoring 2–4 cell Li-ion packs (6–16.8V) in handheld medical devices or IoT sensors to prevent deep discharge and trigger graceful shutdown. IC Role / Device Role / Timing Role: LTC2960CDC-1 acts as primary supervisor: ADJ sets 6.33V falling reset threshold; IN+ triggers 5.537V UVLO for buck converter disable; RST drives MCU reset; OUT signals NMI for state save. Use Value: 850nA ICC extends battery life beyond 10 years; 36V outputs interface directly with 12V system rails; 15ms timeout accommodates fast-boot MCUs. |
Use Scenario: Supervising 12V vehicle battery voltage during cold cranking and load dump events to maintain ECU reset integrity. IC Role / Device Role / Timing Role: LTC2960CDC-1 monitors battery via ADJ (set to 9.5V) and IN+ (set to 13.2V); RST holds microcontroller in reset below 9.5V; OUT asserts during overvoltage to trigger clamping circuits. Use Value: 36V VCC rating survives 40V load dump transients; ±1.5% accuracy ensures reliable operation across –40°C to 85°C under hood; RT pin enables 200ms timeout for post-cranking stabilization. |
| Industrial Regulator UVLO | Security System Power Management |
Use Scenario: Enabling/disabling DC/DC converters in programmable logic controllers based on input rail stability. IC Role / Device Role / Timing Role: LTC2960CDC-1's OUT drives EN pin of LT3991 buck controller; ADJ set to 24V nominal; RST feeds FPGA configuration reset; MR allows field-service reset. Use Value: Open-drain OUT pulls EN low at 24V input drop, preventing regulator instability; 200ms timeout avoids nuisance trips during brief dips; 2.5V min VCC supports wide-input auxiliary supplies. |
Use Scenario: Managing backup battery switchover and tamper detection in access control panels with dual 3.7V Li-ion cells. IC Role / Device Role / Timing Role: LTC2960CDC-1 monitors main 12V supply (ADJ) and backup battery (IN+); RST disables non-essential loads on main rail failure; OUT triggers alarm on battery depletion. Use Value: Dual-threshold capability replaces two discrete supervisors; 0°C to 70°C rating matches commercial enclosure specs; 850nA ICC minimizes backup battery drain during standby. |
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; 1.6µA ICC; 1.2V–5.5V VCC range; SOT23-3 package | Single-threshold only; unsuitable for dual-monitoring or >5.5V systems; lower accuracy (±2.5%) | Select when cost-sensitive, single-rail 3.3V/5V systems require minimal footprint and fixed threshold suffices. |
| TPS3808G12DBVR | Adjustable threshold (0.405V ref); 1.5µA ICC; 0.8V–6V VCC; 200ms fixed timeout; SOT23-6 | No 36V output rating; limited to 6V VCC; lacks IN+/IN– flexibility; no RT pin for timeout selection | Choose for low-voltage embedded systems where 36V tolerance and dual-comparator functionality are unnecessary. |
Compared with MAX6326US29D3+T and TPS3808G12DBVR, the LTC2960CDC-1 uniquely supports 36V operation, dual independent voltage monitoring, selectable timeout, and nano-power consumption - making it irreplaceable in high-voltage battery and automotive supervision where precision, flexibility, and ultra-low ICC are mandatory.
Availability
LTC2960CDC-1 is available at Aetrix Electronics and suitable for battery-powered portable equipment, automotive battery supervision, and industrial regulator UVLO requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance.
Supply support for LTC2960CDC-1 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTC2960 family was designed specifically for ultra-low-power, high-voltage voltage supervision in battery-backed and automotive systems - emphasizing nanocurrent operation, wide VCC tolerance, and flexible dual-threshold monitoring.
FAQ
What is the maximum input voltage the LTC2960CDC-1 can withstand on its VCC pin?
The LTC2960CDC-1 has an absolute maximum VCC rating of 40V. It operates continuously from 2.5V to 36V, making it suitable for 12V and 24V automotive and industrial rails. Transient overvoltage protection (e.g., Zener + series resistor) is recommended for sustained >36V exposure, as confirmed in Linear's Application Note 2960 F07.
Does the LTC2960CDC-1 support both rising and falling threshold detection on the same input?
Yes - the LTC2960CDC-1 uses internal hysteresis to distinguish rising and falling conditions. On the ADJ input, it asserts RST low when voltage falls below threshold and releases RST only after voltage rises above threshold +2.5% hysteresis. Similarly, IN+ triggers OUT low on falling voltage and releases after rising above threshold +5% hysteresis.
Can the LTC2960CDC-1 be used to monitor a 48V bus?
No - the LTC2960CDC-1 VCC absolute maximum is 40V, and continuous operation is rated only to 36V. For 48V bus monitoring, external attenuation (e.g., resistor divider) must reduce the sensed voltage to ≤36V at VCC, and input pins ADJ/IN+ must remain ≤3.5V per absolute maximum ratings. Direct 48V connection violates specifications and risks permanent damage.
What is the purpose of the RT pin on the LTC2960CDC-1?
The RT pin on the LTC2960CDC-1 selects the reset timeout period: pulled to GND for 15ms, or to VCC for 200ms. This delay occurs after ADJ rises above threshold or MR is released, ensuring stable power before releasing RST. RT is unused on LTC2960-3/4 variants, which default to 200ms and replace RT with DVCC.
How does the LTC2960CDC-1 differ from the LTC2960-2 variant?
The LTC2960CDC-1 is the -1 variant: it uses IN+ (non-inverting) for the secondary comparator and offers 15ms/200ms RT-selectable timeout with 36V open-drain outputs. In contrast, LTC2960-2 uses IN– (inverting) input and identical timeout/output architecture. Pinout and package are identical; only IN+ vs IN– functionality and marking differentiate them.
LTC2960CDC-1 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x2)
LTC2960CDC-1 FAQ
1.How can I place an order for LTC2960CDC-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2960CDC-1 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 LTC2960CDC-1 reliable?
The price and inventory of LTC2960CDC-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2960CDC-1 is usually 5 days.
3.What payment methods are accepted for LTC2960CDC-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2960CDC-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2960CDC-1?
LTC2960CDC-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2960CDC-1 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 LTC2960CDC-1?
For technical support, including LTC2960CDC-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2960CDC-1 requirements.
6.How does Aetrix verify that LTC2960CDC-1 is sourced from the original manufacturer or authorized distributors?
All LTC2960CDC-1 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 LTC2960CDC-1 meets industry standards.
7.What is the process for return or replacement of LTC2960CDC-1?
All LTC2960CDC-1 units undergo pre-shipment inspection (PSI). If there is an issue with LTC2960CDC-1, 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 LTC2960CDC-1 part is unused and in its original packaging.
Return procedure for LTC2960CDC-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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