Diodes Incorporated PT7M6833HD3C3EX

Overview

PT7M6833HD3C3EX from Pericom Semiconductor is a push-pull active-high voltage supervisor IC designed for low-voltage microprocessor power monitoring. It features a factory-set 1.313 V reset threshold (±1.5% accuracy), 210 ms reset timeout, 7.5 µA typical supply current, and operates down to 0.85 V V_CC. It is used in portable battery-powered systems to ensure reliable power-on reset and brownout protection.

For engineers reviewing the PT7M6833HD3C3EX datasheet, PT7M6833HD3C3EX pinout, PT7M6833HD3C3EX application, or PT7M6833HD3C3EX equivalent, key selection criteria include active-high reset polarity, SOT23-3L package compatibility, ultra-low quiescent current, and guaranteed reset assertion at V_CC = 0.85 V.

Technical Context

The PT7M6833HD3C3EX integrates a precision voltage comparator with 444 mV internal reference, hysteresis of 0.75% V_TH, and a fixed 210 ms timeout timer. Its reset logic asserts HIGH when V_CC falls below 1.313 V or recovers after dropout, with propagation delay under 70 µs on V_CC rise.

No manual reset (MR) or RESET-IN pins are present - this variant uses only V_CC-monitored operation in a 3-pin configuration. The push-pull output drives high with 0.8×V_CC minimum VOH at 50 µA, eliminating external pull-up requirements.

Key Specifications

Pinout & Package

PT7M6833HD3C3EX is housed in a lead-free, RoHS-compliant SOT23-3L (C3) surface-mount package measuring 2.9 mm × 1.3 mm × 1.0 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3808G125DBVR and MAX6326XR31D3T, PT7M6833HD3C3EX delivers identical threshold accuracy and timeout while offering push-pull active-high drive in the same SC70-3 footprint - simplifying layout and removing dependency on external components.

Availability

PT7M6833HD3C3EX is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, smart meter battery backup circuits, and low-power MCU development kits requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for PT7M6833HD3C3EX 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) is a fabless analog/mixed-signal IC designer specializing in timing, interface, and power management solutions for communications and computing markets.

PT7M6833HD3C3EX belongs to the PT7M6832–6840 family of ultra-low-voltage supervisors engineered specifically for battery-powered and energy-harvesting systems where sub-1 V operation and nanoamp-level quiescent current are critical.

FAQ

What is the minimum V_CC at which PT7M6833HD3C3EX guarantees reset assertion?

The device guarantees active-high reset assertion down to V_CC = 0.85 V across the full industrial temperature range (−40°C to +85°C). Below this voltage, reset behavior is not specified, but the output remains functional as a high-impedance open circuit - ensuring no erroneous release of reset during final power collapse.

Can PT7M6833HD3C3EX be used with a 1.2 V supply?

Yes - its 1.313 V reset threshold is intentionally selected to monitor 1.3 V nominal rails, but it operates reliably with 1.2 V supplies. At 1.2 V, the device remains functional and will assert reset if V_CC drops below 1.313 V (which cannot occur); thus, it stays in normal mode. For true 1.2 V supervision, select PT7M6833GD3C3EX (1.110 V threshold).

Does PT7M6833HD3C3EX require an external pull-up resistor on the RESET pin?

No - the push-pull active-high output drives both HIGH and LOW states internally. Unlike open-drain variants, it needs no external pull-up. This reduces component count, saves PCB area, and eliminates potential noise coupling through resistive networks in sensitive analog subsystems.

Is there a manual reset (MR) input on PT7M6833HD3C3EX?

No - PT7M6833HD3C3EX omits the MR pin to maintain the 3-pin SOT23-3L/SC70-3L form factor. It provides V_CC-only monitoring. For manual reset capability, consider PT7M6836HD3TBE (SOT143-4L, with MR) or PT7M6839HD3TBE (SOT143-4L, with RESET-IN).