Microchip Technology MIC2800-G1JJYML-TR

Overview

MIC2800-G1JJYML-TR from Microchip Technology is a digital power management IC integrating a 2 MHz, 600 mA PWM buck converter with two independent 300 mA LDOs (LDO1 and LDO2), operating from 2.7V to 5.5V input. It features adjustable Power-on Reset (POR) delay, LOWQ mode reducing total quiescent current to 30 µA, and 75 µVRMS DC/DC output noise in LOWQ mode-enabling clean power for RF-sensitive applications like portable MPU systems.

For engineers reviewing the MIC2800-G1JJYML-TR datasheet, MIC2800-G1JJYML-TR pinout, MIC2800-G1JJYML-TR application, or MIC2800-G1JJYML-TR equivalent, key selection criteria include its triple-output architecture (buck + dual LDO), LOWQ light-load mode behavior, POR programmability via CSET capacitor, thermal shutdown protection, and 16-pin 3 mm × 3 mm QFN package compatibility with space-constrained embedded designs.

Technical Context

The MIC2800-G1JJYML-TR implements a dual-mode regulation architecture: full-power PWM operation (2 MHz, up to 600 mA) and ultra-low-noise LOWQ mode (linear regulator fallback, 30 µA IQ). Its LDO1 draws input directly from the DC/DC output, enabling efficient 1.8 V → 1.5 V conversion, while LDO2 is powered independently from VIN.

Functional integration includes open-drain POR with user-programmable delay (via CSET pin current source of 1.25 µA), separate enable inputs (EN1 for DC/DC+LDO1, EN2 for LDO2 only), and ESD-hardened LOWQ/POR pins supporting leakage-free interfacing with host MPU backup domains-even when main supply is absent.

Key Specifications

Pinout & Package

Package: 16-pin, 3 mm × 3 mm, 0.5 mm pitch QFN with exposed thermal pad (PGND-connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65023BRSBR and MAX20029ATPA/V+T, the MIC2800-G1JJYML-TR uniquely combines 75 µVRMS LOWQ-mode noise, 30 µA total IQ, and ESD-hardened backup-domain I/O-making it optimal for portable RF and battery-critical applications where other alternatives trade noise performance for feature count or qualification scope.

Availability

MIC2800-G1JJYML-TR is available at Aetrix Electronics and suitable for embedded MPU power sequencing, low-power wearable RF systems, and backup power management requiring stable component supply across long-lifecycle industrial and consumer programs.

Supply support for MIC2800-G1JJYML-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, FPGA, and power management solutions, serving industrial, automotive, and consumer markets with vertically integrated silicon and software tools.

The MIC2800 product line delivers highly integrated, low-noise power management ICs optimized for battery-powered embedded systems requiring precise sequencing, ultra-low standby current, and RF-clean outputs-targeting ARM-based MPUs and wireless SoCs.

FAQ

What is the function of the LOWQ pin on the MIC2800-G1JJYML-TR?

The LOWQ pin on the MIC2800-G1JJYML-TR is an active-low control input that selects between full-power PWM mode (LOWQ HIGH) and ultra-low-noise LOWQ mode (LOWQ LOW). In LOWQ mode, the DC/DC converter shuts down, reducing total quiescent current to 30 µA, and output regulation shifts to the internal linear regulator path-delivering up to 60 mA with 75 µVRMS noise. The pin is ESD-hardened with no clamping diodes, enabling safe interfacing with backup-domain host GPIOs.

How is the Power-on Reset (POR) delay programmed for the MIC2800-G1JJYML-TR?

The POR delay for the MIC2800-G1JJYML-TR is programmed using an external capacitor connected from the CSET pin (Pin 13) to SGND. The CSET pin sources a precise 1.25 µA current that charges this capacitor; the time required to reach 1.25 V determines the delay. The delay in microseconds equals the capacitor value in picofarads (e.g., 100 nF = 100,000 pF = 100 µs). No delay occurs for POR low-to-high transitions-only the high-to-low detection is instantaneous.

Can the MIC2800-G1JJYML-TR power both LDO1 and LDO2 simultaneously from a single 3.3 V input?

Yes, the MIC2800-G1JJYML-TR can power both LDO1 and LDO2 from a single 3.3 V input. LDO2 draws directly from VIN (Pins 6/7), while LDO1 is powered by the DC/DC output (via Pin 10, LDO). When the DC/DC is enabled and configured for 1.8 V output, LDO1 receives 1.8 V input-supporting efficient 1.8 V → 1.5 V conversion. This architecture avoids stacking losses and maintains >90% overall efficiency across both LDO outputs under typical load conditions.

What is the maximum output current capability of LDO1 in LOWQ mode on the MIC2800-G1JJYML-TR?

In LOWQ mode, the MIC2800-G1JJYML-TR limits LDO1 output current to 10 mA. This restriction is explicitly defined in the datasheet to maintain ultra-low-noise operation and stable regulation under light-load conditions. For full 300 mA LDO1 output, the device must operate in PWM mode (LOWQ HIGH). The 10 mA limit ensures minimal switching artifacts and preserves the 75 µVRMS noise performance critical for RF-sensitive applications.

Does the MIC2800-G1JJYML-TR require external compensation components for stability?

No, the MIC2800-G1JJYML-TR does not require external compensation components. Its DC/DC controller is internally compensated and designed to remain stable with standard 2.2 µF ceramic output capacitors and a 2.2 µH inductor. Similarly, both LDOs are unity-gain stable with ≥2.2 µF ceramic output capacitors and do not require ESR tuning or external RC networks. This simplifies layout and reduces BOM count-especially beneficial in space-constrained wearable and IoT designs.