Microchip Technology MIC5350-PGYMT-TR

Overview

MIC5350-PGYMT-TR from Micrel is a dual-output ultra-low-dropout linear regulator integrating a 300mA LDO (VOUT1 = 3.0V) and a 500mA LDO (VOUT2 = 1.8V) in a single 8-pin 2mm × 2mm Thin MLF® package. It delivers ultra-low noise (30µVRMS), low dropout (75mV @ 300mA, 125mV @ 500mA), and ±2% output accuracy across –40°C to +125°C, enabling clean power for RF front-ends and camera sensor rails in space-constrained portable devices.

For engineers reviewing the MIC5350-PGYMT-TR datasheet, MIC5350-PGYMT-TR pinout, MIC5350-PGYMT-TR application, or MIC5350-PGYMT-TR equivalent, key selection criteria include independent active-high enable control (EN1/EN2), µCap stability with 2.2µF ceramic output capacitors, thermal shutdown protection, and compatibility with low-ESR X7R/X5R dielectrics - all critical for noise-sensitive imaging and mobile baseband subsystems.

Technical Context

The MIC5350-PGYMT-TR implements two independent CMOS-based ULDO regulators sharing a common input (VIN) and ground (GND), each with dedicated enable inputs (EN1, EN2) and output pins (VOUT1, VOUT2). Its architecture supports simultaneous or staggered activation, with fast 30µs turn-on time and no-load stability - eliminating need for dummy loads in standby modes.

Thermal performance is enabled by the exposed heatsink pad (EPAD) tied internally to GND and the 90°C/W junction-to-ambient thermal resistance of the 2mm × 2mm Thin MLF® package. The device operates over 2.6V–5.5V input range and maintains regulation down to 75mV dropout at full 300mA load on VOUT1 and 125mV at 500mA on VOUT2.

Key Specifications

Pinout & Package

Package: 8-pin 2mm × 2mm Thin MLF® (TMLF), RoHS-compliant, NiPdAu lead finish, halogen-free mold compound, with exposed heatsink pad (EPAD) internally connected to GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6210B3018MR-G and RT9013-3018GB, the MIC5350-PGYMT-TR offers superior noise performance (30µVRMS), lower dropout (125mV vs. ≥150mV), and integrated BYP functionality - making it the preferred choice for RF-sensitive and battery-limited portable imaging systems where thermal density and signal fidelity are critical.

Availability

MIC5350-PGYMT-TR is available at Aetrix Electronics and suitable for mobile phone camera modules, GPS receivers, and portable media players requiring stable component supply, consistent parametric performance across temperature, and long-term manufacturing continuity.

Supply support for MIC5350-PGYMT-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. Known for high-performance LDOs and Ethernet PHYs, Micrel emphasized robustness and integration for portable and industrial applications.

The MIC5350 family was designed specifically for space-constrained, noise-sensitive portable electronics - delivering dual-rail power with ultra-low dropout, low noise, and thermal efficiency in sub-4mm² packages for camera modules, GPS, and multimedia devices.

FAQ

What are the exact output voltages and current capabilities of the MIC5350-PGYMT-TR?

The MIC5350-PGYMT-TR provides two fixed, non-adjustable outputs: VOUT1 = 3.0V rated for up to 300mA, and VOUT2 = 1.8V rated for up to 500mA. These values are laser-trimmed at wafer test and guaranteed within ±2% initial accuracy across temperature. The part does not support external feedback or voltage adjustment - its identity is defined solely by the "PG" marking (3.0V/1.8V) in the ordering table.

Does the MIC5350-PGYMT-TR require external capacitors, and what types are recommended?

Yes, the MIC5350-PGYMT-TR requires three external capacitors: a 2.2µF ceramic input capacitor (CIN), two 2.2µF ceramic output capacitors (COUT1, COUT2), and an optional 0.1µF ceramic bypass capacitor on the BYP pin. X7R or X5R dielectric ceramics are mandatory for stability; Z5U/Y5V types are prohibited due to excessive capacitance drift over temperature.

How does the enable functionality work on the MIC5350-PGYMT-TR, and can the regulators be controlled independently?

Yes - the MIC5350-PGYMT-TR features two independent active-high enable inputs: EN1 controls VOUT1 (3.0V), and EN2 controls VOUT2 (1.8V). Each requires VIH ≥ 1.2V to activate and VIL ≤ 0.2V to disable. Neither pin may float; unused enables must be pulled to GND or driven by a logic source. This allows flexible power sequencing, such as enabling VOUT1 first for analog initialization before asserting EN2 for digital core power.

What is the thermal performance of the MIC5350-PGYMT-TR in its 2mm × 2mm Thin MLF® package?

The MIC5350-PGYMT-TR has a junction-to-ambient thermal resistance (θJA) of 90°C/W in standard PCB layout with EPAD soldered to a solid ground plane. At full load (300mA on VOUT1, 500mA on VOUT2) with 3.3V input, power dissipation is ~0.4W, allowing a maximum ambient temperature of ~89°C before thermal shutdown activates. Performance assumes proper thermal via placement under the EPAD per Micrel's layout guidelines.

Is the MIC5350-PGYMT-TR suitable for automotive applications, and what is its temperature rating?

The MIC5350-PGYMT-TR is rated for operation from –40°C to +125°C junction temperature, meeting extended industrial requirements. However, it is not AEC-Q200 qualified or specified for automotive use - Micrel did not release automotive-grade variants of the MIC5350 family. For automotive camera modules or infotainment systems, designers should select AEC-Q100-qualified alternatives with equivalent dual-LDO functionality.