Microchip Technology MIC5302-1.3YMT-TR

Overview

MIC5302-1.3YMT-TR from Micrel is a 150mA ultra-low dropout (ULDO™) CMOS voltage regulator in a 4-pin 1.2mm × 1.6mm Thin MLF® package, delivering fixed 1.3V output with ±2% initial accuracy and 50mV dropout at full load. It operates from 2.3V to 5.5V input, draws only 85µA quiescent current, and supports zero-current shutdown via active-high EN pin-ideal for space-constrained RF power and imaging sensor rails in mobile phones and digital cameras.

For engineers reviewing the MIC5302-1.3YMT-TR datasheet, MIC5302-1.3YMT-TR pinout, MIC5302-1.3YMT-TR application, or MIC5302-1.3YMT-TR equivalent, key selection criteria include its ultra-small footprint (1.92mm²), 120µV_RMS output noise, thermal/current-limit protection, and guaranteed 150mA output with ceramic capacitor stability.

Technical Context

The MIC5302-1.3YMT-TR integrates a CMOS pass element with precision error amplifier, internal reference, and quick-start circuitry to achieve fast 35µs turn-on time and low-noise regulation. Its architecture enables stable operation with 1µF ceramic output capacitors and eliminates need for external compensation.

It features active-high enable logic with defined VIH/VIL thresholds (1.1V/0.2V), thermal shutdown triggered at junction temperatures exceeding +125°C, and current limiting that activates at 250–725mA depending on input voltage-ensuring robustness in portable battery-powered systems.

Key Specifications

Pinout & Package

The MIC5302-1.3YMT-TR is housed in a Pb-free, 4-pin 1.2mm × 1.6mm Thin MLF® package with exposed thermal pad (EPAD) internally connected to GND. This ultra-compact footprint occupies only 1.92mm² PCB area-50% smaller than SC-70 and 2mm × 2mm MLF® alternatives.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low dropout LDO applications.

Compared with XC6206P132MR and RT9193-13GB, the MIC5302-1.3YMT-TR offers the smallest PCB footprint (1.92mm²), lowest dropout (50mV), and true zero-current shutdown-making it optimal for next-generation ultra-compact portable devices where space, efficiency, and standby power are co-critical.

Availability

MIC5302-1.3YMT-TR is available at Aetrix Electronics and suitable for mobile phone RF power rails, digital camera image sensor bias, and portable media player audio codec supplies requiring stable component supply across high-volume production cycles.

Supply support for MIC5302-1.3YMT-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 Inc. was a U.S.-based semiconductor company specializing in analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015. It pioneered high-performance, space-efficient LDO architectures for portable electronics.

The MIC5302 product line was designed specifically for ultra-compact, low-noise power delivery in battery-powered imaging, RF, and portable multimedia systems-emphasizing minimal footprint, ceramic capacitor compatibility, and robust thermal performance.

FAQ

What is the maximum input voltage rating for MIC5302-1.3YMT-TR?

The MIC5302-1.3YMT-TR has an absolute maximum input voltage of +6V, but its recommended operating input voltage range is +2.3V to +5.5V. Exceeding 5.5V may trigger internal protection or cause permanent damage. The device is optimized for single-cell Li-ion (up to 4.2V) and regulated 3.3V/5V system rails, and MIC5302-1.3YMT-TR maintains regulation down to VIN = VOUT + 50mV.

Does MIC5302-1.3YMT-TR require an external output capacitor, and what type is recommended?

Yes, MIC5302-1.3YMT-TR requires a minimum 1µF ceramic output capacitor for stability. X7R or X5R dielectric types are strongly recommended due to their ±15% capacitance shift over temperature; Y5V/Z5U types are discouraged because their >50% variation risks instability. The MIC5302-1.3YMT-TR is optimized for 1µF and shows no significant performance gain with larger values.

What is the shutdown current consumption of MIC5302-1.3YMT-TR when EN is low?

When the EN pin is driven low (<0.2V), MIC5302-1.3YMT-TR enters zero-off-mode, drawing ≤2µA total supply current (typical 0.1µA). This near-zero quiescent state eliminates standby power loss in powered-down subsystems such as camera modules or GPS receivers, and MIC5302-1.3YMT-TR resumes regulation within 35µs after EN is raised.

Can MIC5302-1.3YMT-TR operate without load, and is it stable under no-load conditions?

Yes, MIC5302-1.3YMT-TR remains stable and in regulation with zero load current-a key differentiator from many competing LDOs. This behavior is verified across –40°C to +125°C and supports applications like CMOS RAM keep-alive rails or always-on sensor bias where intermittent loading occurs. No minimum load resistor is required for MIC5302-1.3YMT-TR operation.

What thermal considerations apply to MIC5302-1.3YMT-TR in a 1.2mm × 1.6mm Thin MLF® package?

The MIC5302-1.3YMT-TR has a junction-to-ambient thermal resistance (θ_JA) of 173°C/W in its standard 4-pin Thin MLF® footprint. At 150mA and 0.8V dropout (e.g., VIN=2.1V), power dissipation is ~0.12W, allowing a maximum ambient temperature of ~104°C before thermal shutdown. Proper PCB copper pour under the EPAD is essential to maintain this rating, and MIC5302-1.3YMT-TR includes internal thermal shutdown that auto-recovers upon cooling.