Microchip Technology MIC5392-SSYMT-TR

Overview

MIC5392-SSYMT-TR from Micrel is a dual-channel, fixed-output 3.3V/3.3V low-dropout linear regulator (LDO) delivering 150mA per channel with ±2% output accuracy, 155mV dropout at full load, and 60dB PSRR at 1kHz-designed for powering dual-rail camera DSPs and image sensor subsystems in space-constrained mobile devices.

For engineers reviewing the MIC5392-SSYMT-TR datasheet, MIC5392-SSYMT-TR pinout, MIC5392-SSYMT-TR application, or MIC5392-SSYMT-TR equivalent, key selection criteria include independent enable control, µCap stability with 1µF ceramic output capacitors, thermal shutdown protection, and compatibility with 2.5V–5.5V input supplies in ultra-compact 1.2mm × 1.2mm Thin DFN packages.

Technical Context

The MIC5392-SSYMT-TR integrates two fully independent LDO regulators sharing only VIN and GND connections, each with dedicated CMOS-compatible active-high enable inputs (EN1/EN2) and separate output pins (VOUT1/VOUT2). It employs a µCap architecture enabling stable operation with minimal 1µF ceramic output capacitance per channel.

Thermal performance is defined by a junction-to-ambient thermal resistance (θJA) of 173°C/W in its 6-pin 1.2mm × 1.2mm Thin DFN package, with internal current limiting and thermal shutdown protecting against overload and ambient temperature excursions beyond 85°C junction limit under continuous operation.

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-SSYMT-TR, the MIC5392-SSYMT-TR omits auto-discharge but retains identical regulation accuracy, PSRR, and enable flexibility-making it optimal for cost-sensitive, space-constrained camera modules where controlled discharge is handled externally. Versus TCS2120-3333DBVR, it trades higher current capability for lower IQ and true per-rail control.

Availability

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

Supply support for MIC5392-SSYMT-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 global supplier of high-performance analog, power, and timing ICs, specializing in low-dropout regulators, Ethernet PHYs, and clock management solutions for communications and portable electronics.

The MIC5392/3 family was designed specifically for ultra-compact dual-rail power delivery in mobile imaging systems-prioritizing µCap stability, independent enable control, and thermal efficiency in sub-2mm² footprints.

FAQ

What output voltages does the MIC5392-SSYMT-TR provide?

The MIC5392-SSYMT-TR provides two fixed 3.3V outputs-one on VOUT1 and one on VOUT2-each capable of delivering up to 150mA. Its marking code "SS" explicitly denotes the 3.3V/3.3V configuration, and no external resistors or feedback networks are required for voltage setting. This dual 3.3V output makes MIC5392-SSYMT-TR ideal for powering matched analog and digital domains within image sensors or audio codecs.

Does the MIC5392-SSYMT-TR require external capacitors for stability?

Yes, the MIC5392-SSYMT-TR requires a 1µF ceramic capacitor on VIN and a 1µF ceramic capacitor on each VOUT (VOUT1 and VOUT2) to ensure stability across temperature and load conditions. These capacitors must be placed as close as possible to their respective pins, using X5R or X7R dielectrics. The MIC5392-SSYMT-TR's µCap architecture eliminates the need for larger bulk capacitors, but omitting any of these three 1µF capacitors risks oscillation or regulation failure.

How does the enable functionality work on the MIC5392-SSYMT-TR?

The MIC5392-SSYMT-TR features two independent active-high enable inputs: EN1 controls VOUT1 and EN2 controls VOUT2. A logic high (>1.2V) enables the corresponding regulator; a logic low (<0.2V) shuts it down, reducing ground current to less than 1µA. Neither EN pin may float-each must be actively driven or pulled to a defined voltage. This allows precise power sequencing, such as enabling VOUT1 first for sensor analog bias before enabling VOUT2 for digital interface in MIC5392-SSYMT-TR implementations.

What is the maximum input voltage for the MIC5392-SSYMT-TR?

The absolute maximum input voltage for the MIC5392-SSYMT-TR is +6V, but its recommended operating range is +2.5V to +5.5V. Operating above 5.5V risks exceeding safe power dissipation limits, especially at high ambient temperatures or full 150mA load per channel. For typical 3.3V-output use, an input of 3.6V–4.2V (single-cell Li-ion) is optimal-ensuring sufficient headroom for the 155mV dropout while maintaining thermal safety in the 1.2mm × 1.2mm Thin DFN package of MIC5392-SSYMT-TR.

Is the MIC5392-SSYMT-TR RoHS-compliant and halogen-free?

Yes, the MIC5392-SSYMT-TR is RoHS-compliant and halogen-free. Its 6-pin 1.2mm × 1.2mm Thin DFN (MT) package uses a NiPdAu lead finish and halogen-free mold compound, meeting JEDEC standards for green packaging. This compliance is confirmed in the official Micrel datasheet revision 1.3 and applies to all manufacturing lots of MIC5392-SSYMT-TR supplied through authorized distribution channels.