Diodes Incorporated PT7M6832VD3C3EX

Overview

PT7M6832VD3C3EX from Pericom Semiconductor is an ultra-low-voltage supervisor IC designed to monitor 1.2V–1.8V power supplies in microprocessor and digital systems. It provides active-low push-pull reset output, ±1.5% threshold accuracy at 1.575V nominal, 210ms fixed timeout period, and operates down to 0.9V V_CC with 7.5μA typical supply current - enabling reliable power-on reset in portable battery-powered equipment.

For engineers reviewing the PT7M6832VD3C3EX datasheet, PT7M6832VD3C3EX pinout, PT7M6832VD3C3EX application, or PT7M6832VD3C3EX equivalent, key selection criteria include reset threshold tolerance, timeout period matching system boot timing, V_CC validity range, output drive type compatibility with host µP reset input, and SOT23-3L footprint constraints.

Technical Context

The PT7M6832VD3C3EX implements a precision bandgap-based voltage comparator with 444mV internal reference and 0.75% hysteresis to reject noise and transients. Its reset assertion logic triggers when V_CC falls below 1.575V ±1.5%, holding RESET low for exactly 210ms after V_CC recovers above threshold.

No manual reset (MR) or RESET-IN pins are present - this variant is a dedicated fixed-threshold, fixed-timeout, active-low push-pull supervisor. The comparator is immune to fast negative V_CC transients, and the output remains valid down to V_CC = 0.9V with VOH ≥ 0.8×V_CC and VOL ≤ 0.2×V_CC under load.

Key Specifications

Pinout & Package

PT7M6832VD3C3EX is housed in a lead-free, RoHS-compliant SC70-3L package (2.0mm × 2.1mm, 0.65mm pitch), optimized for space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6326T29D3+T and TPS3808G12QDBVRQ1, PT7M6832VD3C3EX delivers optimal fit for 1.6V portable systems: its 1.575V threshold matches nominal supply with ±1.5% accuracy, 210ms timeout is factory-trimmed and requires no external components, and SC70-3L footprint saves board space versus SOT23-6 alternatives.

Availability

PT7M6832VD3C3EX is available at Aetrix Electronics and suitable for wearable health monitors, industrial sensor nodes, smart meter subsystems, and portable medical devices requiring stable component supply with guaranteed long-term availability.

Supply support for PT7M6832VD3C3EX 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

Pericom Semiconductor (now part of Diodes Incorporated) specializes in high-performance interface, timing, and power management ICs for communications, computing, and industrial markets.

The PT7M6832 series belongs to Pericom's ultra-low-voltage supervisor product line, engineered specifically for reliable power monitoring in sub-1.8V battery-powered and energy-harvesting systems where precision, low current, and small footprint are critical.

FAQ

What is the exact reset threshold voltage and tolerance for PT7M6832VD3C3EX?

The PT7M6832VD3C3EX has a factory-set reset threshold of 1.575V with a guaranteed tolerance of ±1.5% over −40°C to +85°C. This corresponds to a minimum threshold of 1.530V and maximum of 1.620V, verified per DC Electrical Characteristics Table on page 5 of the official datasheet.

Does PT7M6832VD3C3EX require an external pull-up resistor on the RESET pin?

No. PT7M6832VD3C3EX features a push-pull active-low RESET output, meaning it actively drives both HIGH and LOW states. Unlike open-drain supervisors, it does not require an external pull-up resistor - simplifying layout and reducing component count in space-constrained designs.

Can PT7M6832VD3C3EX operate reliably below 1.0V V_CC?

Yes. The device guarantees reset functionality down to V_CC = 0.9V, with RESET remaining valid and actively driven. Below 0.9V, output behavior is not specified; however, most target µPs are non-operational below this voltage, making 0.9V the practical lower limit for deterministic supervision.

Is the 210ms timeout period adjustable or fixed?

The 210ms timeout is factory-trimmed and fixed - no external components or configuration pins modify it. This eliminates timing uncertainty from capacitor tolerances or temperature drift, ensuring consistent reset hold time across all units and environmental conditions.