Analog Devices Inc. LTC2913IMS-1#PBF

Overview

LTC2913IMS-1#PBF from Analog Devices (formerly Linear Technology) is a dual-input undervoltage/overvoltage supervisor IC with latching OV output, designed for simultaneous monitoring of two independent power rails in embedded and computing systems. It features ±1.5% threshold accuracy, 44 μA quiescent current, adjustable reset timeout via external capacitor, open-drain UV/OV outputs, and guaranteed operation down to VCC = 1 V. It is used in desktop/notebook computers and network servers for core/I/O voltage supervision.

For engineers reviewing the LTC2913IMS-1#PBF datasheet, LTC2913IMS-1#PBF pinout, LTC2913IMS-1#PBF application, or LTC2913IMS-1#PBF equivalent, key selection considerations include its dual UV/OV input architecture, latch-enabled OV output (LTC2913-1 variant), glitch-filtered comparator timing, MSOP-10 package compatibility, and precise 500 mV internal reference tolerance.

Technical Context

The LTC2913IMS-1#PBF implements two independent high-side (VH1/VH2) and low-side (VL1/VL2) comparator pairs, each referencing a common 500 mV internal threshold with ±1.5% accuracy over –40°C to 85°C. Its UV output asserts low when either VH input falls below threshold; OV asserts low when either VL input exceeds threshold - and latches low until cleared via the LATCH pin.

Glitch immunity is achieved through internal low-pass filtering at each comparator output, eliminating need for external hysteresis while maintaining clean reset assertion. The TMR pin supports programmable timeout (6–14 ms typical with 1 nF) to ensure minimum reset pulse width after fault clearance, and the VCC pin integrates a 6.6 V shunt regulator enabling direct connection to supplies up to 6 V or higher with series resistor.

Key Specifications

Pinout & Package

Package: 10-Lead MSOP (3mm × 3mm), RoHS-compliant, with optional exposed pad (not electrically connected by default).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC2914CMS#PBF and LTC2904CMS8#PBF, the LTC2913IMS-1#PBF uniquely balances dual-rail precision (±1.5%), latching OV response, micropower consumption (44 μA), and compact MSOP-10 packaging - making it optimal for mid-complexity computing and industrial power integrity applications where fault persistence and low overhead are essential.

Availability

LTC2913IMS-1#PBF is available at Aetrix Electronics and suitable for desktop computers, network servers, and industrial embedded controllers requiring stable component supply, long-term lifecycle support, and guaranteed performance across –40°C to 85°C.

Supply support for LTC2913IMS-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 all Linear-supervised products.

The LTC2913IMS-1#PBF belongs to Linear's precision voltage supervisor product line, engineered specifically for high-reliability power sequencing and fault detection in computing, communications, and industrial equipment.

FAQ

What is the operating temperature range for the LTC2913IMS-1#PBF?

The LTC2913IMS-1#PBF is rated for operation from –40°C to +85°C (Industrial grade). This is confirmed by the "I" suffix in the part number and specified in the Absolute Maximum Ratings table. The device maintains ±1.5% threshold accuracy across this full range, and its MSOP-10 package has θ_JA = 120°C/W for thermal design validation.

Does the LTC2913IMS-1#PBF support latching overvoltage detection?

Yes - the LTC2913IMS-1#PBF is the -1 variant, which implements latching OV functionality. When an overvoltage condition occurs on either VL1 or VL2, the OV pin latches low and remains asserted until the LATCH pin is pulled high. This behavior is explicitly defined in the product description and block diagram, distinguishing it from the -2 variant.

How is the reset timeout period configured on the LTC2913IMS-1#PBF?

The reset timeout period is set by connecting an external capacitor (C_TMR) between the TMR pin (Pin 9) and GND. With C_TMR = 1 nF, the typical timeout is 8.5 ms. The relationship is linear: t_UOTO ≈ 9 ms/nF. Tying TMR to V_CC disables the timeout, causing immediate UV/OV release after fault clearance.

Can the LTC2913IMS-1#PBF monitor voltages higher than 6 V?

Yes - the V_CC pin incorporates an internal 6.6 V shunt regulator. To monitor supplies >6 V (e.g., 12 V), connect the supply to V_CC through a series current-limiting resistor. The resistor value must ensure input current stays ≤10 mA at maximum supply voltage, per Absolute Maximum Ratings.

What are the absolute maximum ratings for the VH and VL input pins on the LTC2913IMS-1#PBF?

The VHn and VLn pins have an absolute maximum rating of –0.3 V to +7.5 V. This allows safe interfacing with resistive divider networks referenced to higher supply rails (e.g., 12 V), provided the divider scales input to ≤7.5 V. Exceeding this range risks permanent damage, as stated in the Absolute Maximum Ratings table.