Analog Devices Inc. LTC2913HDD-1#PBF

Overview

LTC2913HDD-1#PBF from Analog Devices (formerly Linear Technology) is a dual-input, latching overvoltage/undervoltage supervisor IC designed for simultaneous monitoring of two independent supply rails in high-reliability embedded systems. It features ±1.5% threshold accuracy, 44 μA quiescent current, open-drain UV/OV outputs, and guaranteed operation down to VCC = 1 V. Used in industrial computing and network server power sequencing where fault persistence and glitch immunity are critical.

For engineers reviewing the LTC2913HDD-1#PBF datasheet, LTC2913HDD-1#PBF pinout, LTC2913HDD-1#PBF application, or LTC2913HDD-1#PBF equivalent, this page delivers verified functional identity, validated 10-pin DFN package mapping, confirmed latching OV behavior, precise trip timing parameters, and real-world design context - all extracted from official Linear Technology documentation and validated against Analog Devices' product specifications.

Technical Context

The LTC2913HDD-1#PBF implements two independent comparator pairs per monitored rail (VHn/VLn), each feeding into shared UV and OV logic outputs with adjustable timeout via external capacitor on TMR. Its internal shunt regulator enables direct operation from supplies up to 6 V or regulated operation above 6 V using an external series resistor.

Unlike the -2 variant, the LTC2913HDD-1#PBF uses the LATCH pin (Pin 8) to control OV output latching: low = latch on OV fault, high = clear latch and enable timeout-based OV release. Glitch filtering is implemented via internal low-pass integration at each comparator output, eliminating need for external hysteresis while maintaining ±1.5% threshold accuracy across –40°C to +125°C.

Key Specifications

Pinout & Package

Package: 10-lead (3 mm × 3 mm) plastic DFN with exposed thermal pad (Pin 11, optional GND connection). Pin pitch: 0.5 mm. RoHS-compliant, lead-free #PBF finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual UV/OV monitoring applications.

Compared with LTC2913HDD-1#PBF, LTC2913HMS-1#PBF offers identical supervision logic in a larger, more thermally robust MSOP package, while LTC2904CMS8#PBF trades latching capability and dual-input configurability for lower cost and higher accuracy in basic dual-rail monitoring.

Availability

LTC2913HDD-1#PBF is available at Aetrix Electronics and suitable for industrial computing, telecom infrastructure, and automotive electronics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2913HDD-1#PBF 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 and maintains full technical and manufacturing continuity for the LTC portfolio. Linear's legacy precision analog expertise underpins the LTC2913 series' metrology-grade voltage monitoring performance.

The LTC2913 product line was designed specifically for high-accuracy, low-power, multi-rail voltage supervision in space-constrained, thermally demanding applications - emphasizing threshold stability, glitch immunity, and flexible fault-handling modes like latching and disable.

FAQ

What is the key functional difference between LTC2913HDD-1#PBF and LTC2913HDD-2#PBF?

The LTC2913HDD-1#PBF implements latching overvoltage behavior controlled by the LATCH pin: pulling LATCH low causes OV to remain asserted until manually cleared. In contrast, LTC2913HDD-2#PBF replaces LATCH with DIS (disable) functionality - pulling DIS high forces both UV and OV outputs high regardless of input faults, except during VCC undervoltage lockout. This makes LTC2913HDD-1#PBF ideal for persistent fault capture, while the -2 variant suits applications requiring active output inhibition.

How does the LTC2913HDD-1#PBF achieve ±1.5% threshold accuracy over –40°C to +125°C?

The LTC2913HDD-1#PBF achieves ±1.5% threshold accuracy through laser-trimmed internal reference circuitry and matched comparator input stages, validated across temperature in production test. This specification applies to the 0.5 V internal trip point used for all VHn/VLn comparisons, and is independent of external resistor tolerances - though overall system accuracy also depends on RA/RB/RC divider precision as described in the datasheet's 3-step design procedure.

Can LTC2913HDD-1#PBF monitor negative voltages?

No, the LTC2913HDD-1#PBF is specified only for positive voltage monitoring: VHn and VLn inputs accept 0 V to 7.5 V, with trip thresholds fixed at 0.5 V. For negative rail supervision, Analog Devices offers the LTC2909 (dual UV/OV plus negative voltage monitor) or LTC2914 (quad UV/OV with up to two negative inputs), both in DFN packages and supporting –5 V to +5 V input ranges.

What is the minimum recommended capacitor value for the TMR pin on LTC2913HDD-1#PBF?

The minimum recommended capacitor value for the TMR pin on LTC2913HDD-1#PBF is 10 pF, as stated in the datasheet. Using less than 10 pF may result in unstable or undefined timeout behavior. A 1 nF capacitor yields a nominal timeout of 8.5 ms at 25°C, scaling linearly (9 ms/nF) across temperature. For longer delays, select low-leakage capacitors (leakage < 1.3 μA) to avoid timing drift.

Does LTC2913HDD-1#PBF require external pull-up resistors on UV and OV pins?

The LTC2913HDD-1#PBF includes weak internal pull-ups to VCC on both UV and OV pins, eliminating the need for external pull-ups in most applications. However, when VCC drops near 1 V, the internal pull-up strength diminishes significantly; in such cases - especially where OV state integrity is critical during brown-out - an external pull-up ≤ 100 kΩ is recommended to ensure reliable high-level signaling.