Microchip Technology MIC94310-PYM5-TR

Overview

MIC94310-PYM5-TR from Microchip Technology is a 3.0V fixed-output, 200 mA low-dropout linear regulator with Ripple Blocker™ technology for high-frequency switching noise rejection. It operates from 1.8V to 3.6V input, delivers >50 dB PSRR from 10 Hz to 10 MHz at 200 mA load, and features logic-controlled enable, thermal shutdown, and current limiting. It serves as a post-regulator in RF-sensitive power rails of mobile cameras and GPS modules.

For engineers reviewing the MIC94310-PYM5-TR datasheet, MIC94310-PYM5-TR pinout, MIC94310-PYM5-TR application, or MIC94310-PYM5-TR equivalent, key selection criteria include its 3.0V output voltage, 200 mA rated current, 50 mV dropout at full load, ultra-low 83 µV_RMS output noise, and SOT-23-5 package compatibility with GPIO-level enable control.

Technical Context

The MIC94310-PYM5-TR integrates a charge-pump–assisted error amplifier and bias circuitry to maintain high PSRR even when VIN approaches VOUT, enabling efficient operation near dropout. Its Ripple Blocker™ architecture actively suppresses ripple across 10 Hz–10 MHz without requiring external compensation networks.

It uses CMOS-based enable logic with defined V_{EN_LOW} ≤ 0.4 V and V_{EN_HIGH} ≥ 1.0 V, ensuring compatibility with standard 1.8V/3.3V I/O domains. Thermal shutdown activates at +125°C junction temperature, and internal current limiting triggers at 250–700 mA depending on output short condition.

Key Specifications

Pinout & Package

Package: 5-pin SOT-23 (MIC94310-PYM5-TR). Exposed pad not present; thermal path relies on PCB copper area under pins 2 (GND) and 4 (VIN).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO-with-ripple-rejection applications.

Compared with XC6210B302MR-G and RT9080-30PU5, MIC94310-PYM5-TR uniquely combines integrated enable, thermal shutdown, and guaranteed >50 dB PSRR across 10 Hz–10 MHz - making it optimal for compact, safety-critical RF power rails where both noise rejection and fault resilience are mandatory.

Availability

MIC94310-PYM5-TR is available at Aetrix Electronics and suitable for mobile camera modules, GPS receivers, automotive displays, and industrial scanners requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for MIC94310-PYM5-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 timing solutions, with global manufacturing and quality certifications including ISO 9001 and AEC-Q200 for automotive products.

The MIC94310 product line was designed specifically for noise-sensitive power domains in portable and automotive electronics, delivering high PSRR in ultra-small packages without external compensation.

FAQ

What is the output voltage tolerance of the MIC94310-PYM5-TR?

The MIC94310-PYM5-TR has a fixed 3.0V output with ±3% accuracy over temperature and load. This specification is verified across –40°C to +125°C junction temperature and 1 mA to 200 mA output current, ensuring consistent biasing for RF and imaging circuits without external trimming.

Does the MIC94310-PYM5-TR require an external output capacitor, and if so, what value?

Yes, the MIC94310-PYM5-TR requires a minimum 10 µF ceramic output capacitor for stability in its SOT-23-5 package. The datasheet specifies X5R/X7R dielectrics; Y5V types are discouraged due to excessive capacitance loss over temperature. A 10 µF capacitor also optimizes PSRR performance at high frequencies.

How does the enable pin of the MIC94310-PYM5-TR behave during power-up?

The MIC94310-PYM5-TR enable pin is active-high with no internal pull-up. During power-up, EN must be held low until VIN stabilizes to avoid erratic turn-on behavior. Once VIN reaches valid operating range, asserting EN ≥1.0 V initiates regulated 3.0V output within 70 µs, as confirmed by Figure 2-21 in DS20006105B.

Can the MIC94310-PYM5-TR be used in automotive applications?

Yes, the MIC94310-PYM5-TR is rated for –40°C to +125°C junction temperature and packaged in a qualified SOT-23-5 variant. Its thermal shutdown, current limiting, and high PSRR make it suitable for automotive infotainment displays and telematics modules where EMI immunity and reliability are critical.

What is the maximum allowable power dissipation for the MIC94310-PYM5-TR at 200 mA load?

At 200 mA and 3.0V output, with typical 100 mV dropout, power dissipation is 20 mW. With θ_JA = 120°C/W for the SOT-23-5 package, this yields <2.4°C junction-to-ambient rise - well within the +125°C absolute max. Derating begins above ~100°C ambient, per Equation 4-4 in DS20006105B.