Microchip Technology MIC5335-SPYMT-TR

Overview

MIC5335-SPYMT-TR from Microchip Technology is a dual-channel, 300 mA ultra-low dropout (ULDO) linear regulator in a 1.6 mm × 1.6 mm TDFN-6 package, delivering fixed 3.3 V and 3.0 V outputs with 75 mV dropout at 300 mA, 65 dB PSRR at 1 kHz, and µCap stability using only 1 µF ceramic output capacitors - ideal for space-constrained RF and digital baseband power domains in portable media players and GPS receivers.

For engineers reviewing the MIC5335-SPYMT-TR datasheet, MIC5335-SPYMT-TR pinout, MIC5335-SPYMT-TR application, or MIC5335-SPYMT-TR equivalent, key selection criteria include independent active-high enable control per LDO, thermal shutdown and current limit protection, low 90 µA quiescent current per regulator, fast 30 µs turn-on time, and compatibility with minimal 1 µF ceramic output capacitance across –40°C to +125°C junction temperature range.

Technical Context

The MIC5335-SPYMT-TR integrates two independent CMOS-based ULDO regulators sharing a common VIN and GND, each with dedicated EN1/EN2 inputs enabling selective activation of VOUT1 (3.3 V) and VOUT2 (3.0 V). Its µCap architecture eliminates need for large bypass capacitors by stabilizing with 1 µF ceramic output caps.

Thermal performance is optimized via an exposed EPAD tied to GND, achieving θJA = 100°C/W in the 1.6 mm × 1.6 mm footprint. Protection features include thermal shutdown triggered above +125°C junction temperature and foldback current limiting (340–950 mA) on both outputs.

Key Specifications

Pinout & Package

Package: 6-lead Thin DFN (TDFN-6, MT), 1.6 mm × 1.6 mm × 0.55 mm, exposed EPAD (GND).

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6216D333MR-G and RP111N303D-TR-F, the MIC5335-SPYMT-TR uniquely delivers matched 3.3 V/3.0 V outputs with per-channel enable, ultra-low 75 mV dropout, and µCap stability - making it the only choice for compact, sequenced dual-rail designs in portable RF systems.

Availability

MIC5335-SPYMT-TR is available at Aetrix Electronics and suitable for mobile GPS receivers, portable media players, and digital still cameras requiring stable component supply with guaranteed long-term manufacturability and RoHS-compliant packaging.

Supply support for MIC5335-SPYMT-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

Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS 16949-certified manufacturing and global technical support infrastructure.

The MIC5335 product line delivers high-density dual LDOs for portable electronics, designed specifically to replace discrete single-channel regulators in space- and power-constrained handheld devices.

FAQ

What are the exact output voltages of the MIC5335-SPYMT-TR?

The MIC5335-SPYMT-TR provides two fixed, factory-set output voltages: VOUT1 = 3.3 V and VOUT2 = 3.0 V, with ±2% accuracy over –40°C to +125°C junction temperature. This specific variant is identified by the "SP" marking code in Table 5-1 of the datasheet DS20006039A, confirming its 3.3 V/3.0 V configuration. The MIC5335-SPYMT-TR does not support adjustable outputs or user-programmable voltages.

Does the MIC5335-SPYMT-TR require external capacitors, and if so, what type and value?

Yes, the MIC5335-SPYMT-TR requires a 1 µF ceramic capacitor on both VOUT1 and VOUT2 for stability, and a 1 µF ceramic capacitor from VIN to GND. X7R or X5R dielectric types are recommended due to their stable capacitance over temperature; Y5V or Z5U types are discouraged. The MIC5335-SPYMT-TR's µCap architecture eliminates need for larger bulk capacitors, unlike conventional LDOs.

How does the enable functionality work on the MIC5335-SPYMT-TR?

The MIC5335-SPYMT-TR features two independent active-high enable inputs: EN1 controls VOUT1 (3.3 V) and EN2 controls VOUT2 (3.0 V). A logic high ≥1.1 V enables the respective LDO; a logic low ≤0.2 V disables it, reducing ground current to ≤2 µA. Neither EN pin may float - they must be driven or pulled to GND/VIN. This allows precise power sequencing in the MIC5335-SPYMT-TR.

What thermal considerations apply to the MIC5335-SPYMT-TR in a 3.3 V/3.0 V @ 300 mA application?

In a worst-case scenario with VIN = 3.3 V, VOUT1 = 3.3 V, VOUT2 = 3.0 V, and 300 mA per channel, power dissipation is ~0.39 W. With θJA = 100°C/W, maximum ambient temperature is 86°C before junction exceeds +125°C. Adequate PCB copper connected to the EPAD is mandatory. The MIC5335-SPYMT-TR includes thermal shutdown that activates above +125°C and recovers automatically upon cooling.

Is the MIC5335-SPYMT-TR suitable for automotive applications?

No - the MIC5335-SPYMT-TR is rated for –40°C to +125°C junction temperature but is not AEC-Q200 qualified or specified for automotive use. It lacks automotive-grade screening, extended lifetime testing, and fault-reporting features required for vehicle systems. For automotive dual-LDO needs, designers should consider Microchip's AEC-Q200-qualified MCP1826S or similar alternatives instead of the MIC5335-SPYMT-TR.