Analog Devices Inc. LTC2916IDDB-1#TRPBF

Overview

LTC2916IDDB-1#TRPBF from Analog Devices (formerly Linear Technology) is a precision voltage supervisor IC with fixed –5% tolerance, nine selectable nominal thresholds (12V to 1.0V + ADJ), and integrated manual reset input. It operates from 1.5V to 5.5V supply, consumes 30μA quiescent current, guarantees ±1.5% threshold accuracy over –40°C to 125°C, and delivers glitch-immune open-drain RST output for automotive power monitoring.

For engineers reviewing the LTC2916IDDB-1#TRPBF datasheet, LTC2916IDDB-1#TRPBF pinout, LTC2916IDDB-1#TRPBF application, or LTC2916IDDB-1#TRPBF equivalent, key selection criteria include its fixed –5% tolerance, MR pin support for push-button reset, TSOT-23/DFN package compatibility, 200ms internal reset timeout, and guaranteed RST assertion down to VCC = 0.8V.

Technical Context

The LTC2916IDDB-1#TRPBF implements a precision comparator-based supervision architecture with three-state SEL1/SEL2 inputs selecting one of nine internal reference voltages, and a dedicated MR input that directly triggers reset assertion independent of VM state. Its internal 6.2V shunt regulator enables operation from supplies up to 12V when paired with an external series resistor.

Reset timing is configurable via RT pin: tied to VCC yields ~200ms timeout; floating yields ~400μs; capacitor-to-GND enables adjustable delay (9ms/nF). The RST output is open-drain, requires external pull-up, and remains functional down to VCC = 0.8V with VOL ≤ 0.2V at 15μA sink.

Key Specifications

Pinout & Package

Package: 8-Lead (3mm × 2mm) Plastic DFN with exposed pad (Pin 9), rated for –40°C to 125°C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Compared with LTC2915IDDB-1#TRPBF and TPS3808G18DBVR, the LTC2916IDDB-1#TRPBF uniquely combines fixed –5% tolerance, nine selectable thresholds, and integrated manual reset in a compact DFN package-enabling flexible, robust power supervision without external components for reset initiation or timing adjustment.

Availability

LTC2916IDDB-1#TRPBF is available at Aetrix Electronics and suitable for automotive ECU power sequencing, industrial PLC supply monitoring, optical transceiver voltage validation, and medical imaging system auxiliary supply supervision requiring stable component supply across extended temperature ranges.

Supply support for LTC2916IDDB-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 acquired Linear Technology in 2017 and maintains its precision analog product lines, including high-reliability supervisors, with global manufacturing and qualification standards.

The LTC2916IDDB-1#TRPBF belongs to Linear's voltage supervisor family designed specifically for automotive, industrial, and telecom applications demanding guaranteed operation to 125°C, ±1.5% threshold accuracy, and robust glitch immunity.

FAQ

What is the operating temperature range for the LTC2916IDDB-1#TRPBF?

The LTC2916IDDB-1#TRPBF is specified for operation from –40°C to 125°C, making it suitable for under-hood automotive applications and high-temperature industrial environments. This rating is confirmed in the Absolute Maximum Ratings table and applies to the "H" grade variant denoted in the part number suffix.

Does the LTC2916IDDB-1#TRPBF require external components for basic operation?

No, the LTC2916IDDB-1#TRPBF requires only a 0.1μF bypass capacitor on VCC for stable operation. Its internal 100kΩ MR pull-up enables direct push-button connection, and tying RT to VCC configures the 200ms reset timeout without external capacitance-reducing BOM count and layout complexity.

How does the manual reset (MR) function on the LTC2916IDDB-1#TRPBF?

The MR pin on the LTC2916IDDB-1#TRPBF is an active-low input with internal 100kΩ pull-up to VCC. Asserting MR low while RST is high initiates a full reset cycle: RST is driven low for the configured timeout period (e.g., 200ms when RT = VCC), then released. This provides field-serviceable reset capability without firmware involvement.

Can the LTC2916IDDB-1#TRPBF monitor a 12V supply directly?

Yes-the LTC2916IDDB-1#TRPBF includes an internal 6.2V shunt regulator on the VCC pin. To monitor a 12V supply, connect it to VCC through a current-limiting resistor (e.g., 11kΩ for 12V), ensuring VCC pin current stays within ±5mA. VM is then connected to the 12V rail (or a resistive divider) to set the trip point.

What is the guaranteed minimum VCC voltage for RST assertion on the LTC2916IDDB-1#TRPBF?

The LTC2916IDDB-1#TRPBF guarantees RST assertion (low) for VCC ≥ 0.8V, as specified in the Electrical Characteristics table under VCC(MIN). This ensures reliable reset generation even during severe brownout conditions before the device enters undervoltage lockout.