Microchip Technology MIC2800-G4JYML-TR

Overview

MIC2800-G4JYML-TR from Microchip Technology is a digital power management IC integrating a 2 MHz, 600 mA synchronous buck DC/DC converter and two independent 300 mA LDOs (LDO1 fed from DC/DC output, LDO2 fed directly from VIN), with adjustable Power-on Reset (POR) delay, LOWQ ultra-low-noise light-load mode (30 µA total IQ, 75 µVRMS noise), and thermal/current protection. It powers core and I/O rails in embedded MPU systems.

For engineers reviewing the MIC2800-G4JYML-TR datasheet, MIC2800-G4JYML-TR pinout, MIC2800-G4JYML-TR application, or MIC2800-G4JYML-TR equivalent, key selection criteria include its triple-output architecture, LOWQ mode noise performance, POR sequencing control via CSET capacitor, and QFN-16 (3 mm × 3 mm) package compatibility with space-constrained portable and RF-sensitive designs.

Technical Context

The MIC2800-G4JYML-TR implements a dual-path regulation strategy: in full-power PWM mode (LOWQ = HIGH), the 2 MHz buck delivers up to 600 mA at >90% efficiency; in LOWQ mode (LOWQ = LOW), the buck shuts down and LDO2 supplies up to 60 mA while drawing only 30 µA total quiescent current. The POR output performs logic-OR monitoring across all three regulated outputs with programmable delay via CSET.

Its architecture separates signal ground (SGND) and power ground (PGND), uses dedicated BIAS pin for internal reference stability, and enables leakage-free interfacing to backup-power domains via ESD-hardened LOWQ and POR pins - critical for systems requiring host MPU reset coordination during brownout or backup transitions.

Key Specifications

Pinout & Package

Tiny 16-pin 3 mm × 3 mm QFN leadless package with exposed thermal pad; requires SGND/PGND separation and proper decoupling (CBYP = 0.1 µF, BIAS = 0.1 µF, VIN ≥ 4.7 µF ceramic).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-rail power management applications.

Compared with TPS65023BRSBR and MAX20029ATP/V+T, the MIC2800-G4JYML-TR uniquely combines programmable POR sequencing, leakage-free backup-domain control, and 75 µVRMS LOWQ noise - making it optimal for portable medical and RF-critical applications where power integrity during sleep dominates selection.

Availability

MIC2800-G4JYML-TR is available at Aetrix Electronics and suitable for embedded MPU power, portable RF systems, and backup power systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MIC2800-G4JYML-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 Inc. is a leading provider of microcontrollers, analog devices, FPGAs, and power management ICs, serving industrial, automotive, communications, and consumer markets.

The MIC2800 product line delivers highly integrated, low-noise multi-rail power solutions optimized for battery-powered embedded processors and RF systems demanding precise sequencing and ultra-low standby current.

FAQ

What is the function of the LOWQ pin on the MIC2800-G4JYML-TR?

The LOWQ pin on the MIC2800-G4JYML-TR is an active-low control input that selects between two operating modes: when pulled HIGH (>1 V), the device operates in full-power 2 MHz PWM mode delivering up to 600 mA; when pulled LOW (<0.2 V), it enters LOWQ mode, shutting down the buck regulator and using LDO2 to supply up to 60 mA with only 30 µA total quiescent current and 75 µVRMS output noise. Its ESD-hardened structure allows safe interfacing with backup-power-domain GPIOs.

How is Power-on Reset (POR) delay programmed on the MIC2800-G4JYML-TR?

The POR delay on the MIC2800-G4JYML-TR is programmed via the CSET pin, which sources a precise 1.25 µA current to charge an external capacitor to ground. The time required to reach 1.25 V determines the POR assertion delay: delay (µs) = CSET capacitance (pF). For example, a 100 nF capacitor yields a 100 ms delay. This enables accurate power-up sequencing to match MPU boot timing requirements without external timers.

Can the MIC2800-G4JYML-TR power both core and I/O rails of an ARM processor?

Yes, the MIC2800-G4JYML-TR is specifically designed for this use case: its 600 mA DC/DC converter can supply the 1.2 V core rail, LDO1 (fed from DC/DC output) can deliver 300 mA at 1.8 V for I/O, and LDO2 (fed from VIN) can provide 300 mA at 2.8 V for DDR or peripherals. The integrated POR output monitors all three rails and asserts a single reset signal only when all are in regulation - simplifying system-level power sequencing.

What are the ground pin requirements for proper operation of the MIC2800-G4JYML-TR?

The MIC2800-G4JYML-TR requires strict separation of SGND (signal ground, Pin 3) and PGND (power ground, Pin 4). SGND serves as the reference for feedback, POR, and bias circuitry and must be routed with minimal loop area to avoid noise coupling. PGND carries high di/dt currents from the SW node and must connect directly to the VIN bypass capacitor ground. Mixing SGND and PGND degrades POR accuracy, increases output noise, and risks instability.

Does the MIC2800-G4JYML-TR support independent enable control of its LDO outputs?

Yes, the MIC2800-G4JYML-TR provides independent enable control: EN1 (Pin 15) enables both the DC/DC converter and LDO1, while EN2 (Pin 16) controls LDO2 only. This allows flexible power sequencing - for example, enabling LDO2 first to power I/O peripherals, then asserting EN1 to bring up the core rail and LDO1. Both inputs are CMOS-compatible with VIH ≥ 1.0 V and must never be left floating.