Microchip Technology MIC5392-PMYMT-TR

Overview

MIC5392-PMYMT-TR from Micrel is a dual-channel, fixed-output 3.0V/2.8V low-dropout linear regulator delivering 150mA per channel in a 1.2mm × 1.2mm Thin DFN package. It features ±2% output accuracy, 155mV dropout at 150mA, 60dB PSRR at 1kHz, and independent CMOS enable pins-designed for powering camera DSPs and image sensor rails in space-constrained mobile devices.

For engineers reviewing the MIC5392-PMYMT-TR datasheet, MIC5392-PMYMT-TR pinout, MIC5392-PMYMT-TR application, or MIC5392-PMYMT-TR equivalent, key selection criteria include dual-rail voltage pairing (3.0V/2.8V), µCap stability with 1µF ceramic capacitors, thermal performance in ultra-small footprint, and independent enable control for power sequencing in portable electronics.

Technical Context

The MIC5392-PMYMT-TR integrates two fully independent LDO regulators sharing only VIN and GND connections. Each channel uses a PMOS pass device enabling low dropout and high PSRR without requiring external bypass capacitors. The design supports stable operation across –40°C to +125°C junction temperature with internal current limiting and thermal shutdown protection.

It operates from 2.5V to 5.5V input, delivers regulated outputs with 0.3% typical load regulation and 0.02%/V line regulation, and maintains 100µV_RMS output noise (10Hz–100kHz). The EN1/EN2 pins are CMOS-compatible, with logic-high threshold ≥1.2V and shutdown current <1µA per enabled/disabled state combination.

Key Specifications

Pinout & Package

Package: 6-pin 1.2mm × 1.2mm Thin DFN (MT), 0.4mm max height, RoHS-compliant NiPdAu lead finish, exposed ePad for thermal conduction to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-LDO applications.

Compared with MIC5393-PMYMX, MIC5392-PMYMT-TR lacks auto-discharge but offers identical regulation performance in a slightly thicker (0.4mm) yet more widely supported Thin DFN variant; versus XC6210B302MR-G, it delivers higher current, tighter voltage matching, and true independent control-making it superior for camera and sensor subsystems demanding precision and sequencing.

Availability

MIC5392-PMYMT-TR is available at Aetrix Electronics and suitable for smartphone camera modules, tablet image sensor power, and portable audio codec applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MIC5392-PMYMT-TR 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

Micrel (now part of Microchip Technology) was a leading designer of high-performance analog, power management, and timing ICs, with expertise in low-dropout regulators, Ethernet PHYs, and clock solutions.

The MIC5392/3 family was engineered specifically for portable electronics requiring dual-rail, ultra-compact, low-noise power delivery-targeting camera modules, image sensors, and handheld audio systems where board space and power integrity are critical.

FAQ

What are the exact output voltages of the MIC5392-PMYMT-TR?

The MIC5392-PMYMT-TR provides fixed, factory-trimmed output voltages of 3.0V on VOUT1 and 2.8V on VOUT2. These values are specified across the full operating temperature range (–40°C to +125°C) with ±2% initial accuracy and ±3% tolerance over temperature, ensuring reliable interface compatibility with modern image sensors and DSPs.

Does the MIC5392-PMYMT-TR require external capacitors, and what type is recommended?

Yes, the MIC5392-PMYMT-TR requires a 1µF X5R or X7R ceramic capacitor from VIN to GND and one 1µF ceramic capacitor per output (VOUT1 and VOUT2) to GND. These low-ESR capacitors ensure stability and optimal PSRR performance. Y5V or Z5U dielectrics are not recommended due to excessive capacitance drift over temperature.

Can both outputs of the MIC5392-PMYMT-TR be enabled independently?

Yes, the MIC5392-PMYMT-TR features two independent active-high enable pins: EN1 controls VOUT1 (3.0V) and EN2 controls VOUT2 (2.8V). Each pin accepts CMOS logic levels (≥1.2V high, ≤0.2V low), and neither may be left floating. This allows precise power sequencing-for example, enabling the 2.8V sensor rail before the 3.0V DSP rail.

What is the maximum ambient temperature for continuous 150mA operation on both channels of the MIC5392-PMYMT-TR?

At 3.6V input, 3.0V/2.8V outputs, and 150mA per channel, the MIC5392-PMYMT-TR dissipates ~0.21W. With θ_JA = 173°C/W and T_J(MAX) = 125°C, the maximum allowable ambient temperature is approximately 89°C for a standard PCB layout with adequate copper pour under the ePad. Derating is required above this point.

Is the MIC5392-PMYMT-TR pin-compatible with any MIC5393 variants?

No, the MIC5392-PMYMT-TR is not pin-compatible with MIC5393 variants such as MIC5393-PMYMX-even though both use 6-pin DFN packages-because the MIC5393 includes an internal 25Ω discharge FET tied to each output, altering internal routing and thermal behavior. While footprint dimensions match, functional differences preclude direct substitution without validation.