Microchip Technology MIC5330-PJYML-TR

Overview

MIC5330-PJYML-TR from Micrel is a dual-channel ultra-low dropout (ULDO™) linear regulator delivering 300mA per channel with fixed 3.0V/2.5V outputs, designed for RF-sensitive and space-constrained portable electronics. It operates from 2.3V to 5.5V input, achieves 75mV dropout at 300mA, delivers 30µVRMS output noise, and integrates thermal shutdown and current limit protection in an 8-pin 2mm × 2mm MLF® package.

For engineers reviewing the MIC5330-PJYML-TR datasheet, MIC5330-PJYML-TR pinout, MIC5330-PJYML-TR application, or MIC5330-PJYML-TR equivalent, key selection criteria include dual independent enable control, µCap compatibility with 1µF ceramic output capacitors, high PSRR (>70dB @ 1kHz), fast 30µs startup, and ±2% initial output accuracy across –40°C to +125°C.

Technical Context

The MIC5330-PJYML-TR implements two independent CMOS-based ULDO regulators with active-high enable inputs (EN1/EN2), allowing asynchronous power sequencing and zero-current shutdown per channel. Each LDO features internal reference bypass via dedicated BYP pin and supports low-ESR ceramic capacitors for stability without external compensation.

Its architecture enables simultaneous regulation of noise-sensitive analog rails (e.g., camera sensor core and I/O supplies) while maintaining >70dB PSRR at 1kHz and 30µVRMS integrated noise over 10Hz–100kHz - critical for RF transceivers and imaging sensors where supply ripple directly impacts SNR.

Key Specifications

Pinout & Package

Package: 8-pin 2mm × 2mm leadless MLF® (MicroLeadFrame) with exposed thermal pad (EP) - RoHS-compliant, NiPdAu lead finish, halogen-free mold compound. Thermal resistance θJA = 90°C/W with minimum footprint layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Torex XC6223D302MR-G and Ricoh RP132L302B-TR-F, the MIC5330-PJYML-TR uniquely combines dual 300mA channels, 75mV dropout, and 30µVRMS noise in a single 2mm × 2mm MLF® package - making it the only option that meets stringent RF and imaging power integrity requirements without increasing component count or board area.

Availability

MIC5330-PJYML-TR is available at Aetrix Electronics and suitable for mobile camera modules, portable media players, and GPS receivers requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant packaging.

Supply support for MIC5330-PJYML-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 power management, timing, and analog ICs before its acquisition by Microchip Technology in 2015. Its products emphasized high integration, small form factor, and performance for portable electronics.

The MIC5330 series was developed to address the demand for ultra-compact, low-noise dual LDOs in space-constrained mobile imaging and RF applications - specifically targeting camera modules, GPS receivers, and handheld multimedia devices.

FAQ

What are the exact output voltages of the MIC5330-PJYML-TR?

The MIC5330-PJYML-TR provides fixed output voltages of 3.0V on VOUT1 (pin 8) and 2.5V on VOUT2 (pin 7). These values are laser-trimmed during manufacturing and specified with ±2% initial accuracy over temperature, ensuring precise rail generation for digital core and analog I/O domains without external feedback components.

Does the MIC5330-PJYML-TR require external capacitors for stability?

Yes, the MIC5330-PJYML-TR requires a minimum 1µF ceramic capacitor from each VOUT pin to GND for stability, and a 1µF ceramic capacitor from VIN to GND. A 0.1µF capacitor from BYP (pin 3) to GND is recommended to reduce output noise and improve PSRR - all low-ESR X7R/X5R types are supported; Y5V/Z5U dielectrics are discouraged due to capacitance drift.

How does the enable functionality work on the MIC5330-PJYML-TR?

The MIC5330-PJYML-TR features two independent active-high enable inputs: EN1 (pin 5) controls the 3.0V LDO1 output, and EN2 (pin 4) controls the 2.5V LDO2 output. A logic high ≥1.1V enables the respective regulator; a logic low ≤0.2V disables it, reducing quiescent current to <2µA per channel. Neither enable pin may be left floating - tie unused enables to GND or VIN via appropriate pull-up/down resistors.

What is the thermal performance of the MIC5330-PJYML-TR in its MLF package?

The MIC5330-PJYML-TR in its 8-pin 2mm × 2mm MLF® package has a junction-to-ambient thermal resistance (θJA) of 90°C/W with minimum recommended PCB footprint. At full 300mA load per channel with 3.3V input, power dissipation reaches ~0.69W - limiting maximum ambient temperature to ~63°C without additional copper pour or thermal vias. The exposed pad (EP) must be soldered to GND for effective heat transfer.

Can the MIC5330-PJYML-TR operate with no load on either output?

Yes, the MIC5330-PJYML-TR remains stable and in regulation with zero load on either or both outputs - a key advantage over many competing LDOs. This capability supports "keep-alive" functions in battery-backed CMOS RAM or real-time clock circuits where one rail may be idle while the other powers active circuitry, eliminating need for dummy loads or complex load-switching schemes.