Analog Devices Inc. LTC2934CDC-2#TRPBF

Overview

LTC2934CDC-2#TRPBF from Analog Devices (formerly Linear Technology) is an ultra-low power, adjustable voltage supervisor IC with active-pull-up reset and power-fail outputs, 500nA quiescent current, ±1.5% threshold accuracy over temperature, and operation down to 1.6V supply - used for battery-powered system initialization and controlled shutdown in portable electronics.

For engineers reviewing the LTC2934CDC-2#TRPBF datasheet, LTC2934CDC-2#TRPBF pinout, LTC2934CDC-2#TRPBF application, or LTC2934CDC-2#TRPBF equivalent, key selection criteria include its 0.4V internal comparator reference, selectable 15ms/200ms reset timeout via RT pin, active-pull-up RST/PFO outputs, 8-lead 2mm × 2mm DFN package, and –40°C to 85°C industrial temperature grade.

Technical Context

The LTC2934CDC-2#TRPBF integrates two independent precision comparators-one monitoring ADJ for reset generation and one monitoring PFI for early power-fail warning-each referenced to a stable 0.4V internal bandgap. Hysteresis is fixed at 5% for ADJ (reset) and 2.5% for PFI (power-fail), ensuring noise immunity during voltage transients.

Its active-pull-up output architecture eliminates external pull-up resistors: RST and PFO drive high to VCC when released, with VOH ≥ 0.7×VCC and VOL ≤ 100mV at 3mA load. The RT pin selects between 15ms and 200ms reset timeout periods, and MR provides manual reset with 20μs minimum pulse width and internal 900kΩ pull-up.

Key Specifications

Pinout & Package

Package: 8-lead, 2mm × 2mm plastic DFN (DC package) with exposed pad (optional GND connection); RoHS-compliant, lead-free finish; rated for 0°C to 70°C ambient (C-grade).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC2935IDC-2#TRPBF and LTC2909IDD-3.3#TRPBF, the LTC2934CDC-2#TRPBF uniquely balances nanoscale quiescent current, full adjustability of both thresholds via external resistors, and active-pull-up outputs - making it optimal for cost-sensitive, battery-limited designs requiring custom voltage trip points.

Availability

LTC2934CDC-2#TRPBF is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered point-of-sale terminals, and wireless IoT edge nodes requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for LTC2934CDC-2#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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2934 product line delivers ultra-low-power, precision voltage supervision for battery-critical applications - designed specifically to extend runtime and ensure robust power sequencing in portable and remote equipment.

FAQ

What is the operating temperature range for the LTC2934CDC-2#TRPBF?

The LTC2934CDC-2#TRPBF is specified for operation from 0°C to 70°C ambient temperature (C-grade). This distinguishes it from the I-grade variants (e.g., LTC2934IDC-2#TRPBF), which operate from –40°C to 85°C. The 'C' suffix in the part number explicitly denotes the commercial temperature range, validated per manufacturer's electrical characteristics table.

How does the LTC2934CDC-2#TRPBF differ from the LTC2934CTS8-2#TRPBF?

The LTC2934CDC-2#TRPBF uses an 8-lead 2mm × 2mm plastic DFN package, while the LTC2934CTS8-2#TRPBF uses an 8-lead TSOT-23 package. Both share identical electrical specifications, pin functions, and active-pull-up output architecture. The DFN offers lower thermal resistance (θJA = 102°C/W vs. 195°C/W) and smaller footprint - critical for space-constrained PCBs.

Can the LTC2934CDC-2#TRPBF monitor two different supply rails simultaneously?

Yes - the LTC2934CDC-2#TRPBF can independently supervise two positive voltage rails using its ADJ and PFI inputs. Each input accepts a resistor divider from its respective rail to GND, allowing distinct falling thresholds (e.g., 1.606V for reset, 1.686V for power-fail). The datasheet Figure 2 confirms dual-rail configuration with four external resistors and no shared components.

What is the maximum supply voltage the LTC2934CDC-2#TRPBF can tolerate on VCC?

The absolute maximum VCC rating for the LTC2934CDC-2#TRPBF is 6V, but its functional operating range is 1.6V to 5.5V per the Electrical Characteristics table. Exceeding 5.5V risks violating recommended operating conditions, even if within absolute maximum limits - sustained operation above 5.5V may impact reliability or parametric performance.

Does the LTC2934CDC-2#TRPBF require external pull-up resistors on RST and PFO?

No - the LTC2934CDC-2#TRPBF features active-pull-up outputs, meaning RST and PFO drive high to VCC internally when released. External pull-ups are unnecessary and discouraged. If interfacing with high-impedance inputs (e.g., CMOS logic), a 100kΩ resistor from RST or PFO to GND prevents floating states during VCC ramp-down, per Applications Information section.