Microchip Technology MIC2800-G7SYML-TR

Overview

MIC2800-G7SYML-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 LDO regulators (LDO1 and LDO2) in a single 16-pin 3 mm × 3 mm QFN package. It delivers three regulated outputs with adjustable POR delay, LOWQ ultra-low-noise light-load mode (30 µA total IQ), and thermal/current protection - optimized for embedded MPU core/I/O rail sequencing in battery-powered SAMA5D2-based systems.

For engineers reviewing the MIC2800-G7SYML-TR datasheet, MIC2800-G7SYML-TR pinout, MIC2800-G7SYML-TR application, or MIC2800-G7SYML-TR equivalent, key selection criteria include verified LOWQ-mode noise (75 µVRMS), dual-LDO load capability (300 mA each), PWM-to-LOWQ transition behavior, and POR delay programmability via CSET capacitor - all confirmed for this exact variant in DS20005839B.

Technical Context

The MIC2800-G7SYML-TR implements a digitally controlled hybrid architecture: its buck stage operates in fixed-frequency 2 MHz PWM mode above ~50 mA load, then transitions to LOWQ linear regulation (via internal LDO path) under light loads to eliminate switching ripple. The LDO1 input is directly sourced from the buck output, enabling efficient 1.8 V → 1.5 V or 1.2 V conversion; LDO2 draws independently from VIN.

Its POR circuit performs a logic-OR of all three output voltage statuses (DC/DC, LDO1, LDO2), with delay programmable from <100 µs to 1 s via external CSET capacitor (1.25 µA current source). LOWQ and POR pins feature ESD-hardened, clamp-free I/O for safe interfacing with backup-power-domain host GPIOs without parasitic leakage.

Key Specifications

Pinout & Package

Package: 16-pin, 3 mm × 3 mm, 0.5 mm pitch QFN with exposed thermal pad (pin 0 = EP).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple-output PMIC applications.

Compared with TPS65023RSBR and MAX20029ATGB/V+T, the MIC2800-G7SYML-TR uniquely combines programmable POR delay, clamp-free backup-power I/Os, and 75 µVRMS LOWQ-mode noise - making it the only option for SAMA5D2-based wearables requiring simultaneous low IQ, clean power, and robust sequencing.

Availability

MIC2800-G7SYML-TR is available at Aetrix Electronics and suitable for embedded MPU power sequencing, portable RF systems, industrial sensor nodes, and backup power management requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MIC2800-G7SYML-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, and power management ICs, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The MIC2800 product line was designed specifically for high-efficiency, low-noise power delivery in resource-constrained embedded systems - emphasizing integrated sequencing, backup-power resilience, and minimal board space for ARM-based MPU platforms.

FAQ

What is the maximum output current capability of the MIC2800-G7SYML-TR's DC/DC converter?

The MIC2800-G7SYML-TR's DC/DC converter delivers up to 600 mA of continuous output current in PWM mode, as specified in Table 1-2 of DS20005839B. This rating holds across the full operating temperature range (–40°C to +125°C) and input voltage range (2.7 V to 5.5 V), with efficiency exceeding 90% at 300 mA load and 3.6 V input. In LOWQ mode, the DC/DC stage is disabled and output current is limited to 60 mA via the internal LDO path.

How does the POR function behave when multiple outputs are enabled on the MIC2800-G7SYML-TR?

The POR output of the MIC2800-G7SYML-TR performs a logic-OR of the regulation status of all three outputs (DC/DC, LDO1, LDO2). It asserts low if *any* enabled output falls below 90% of its nominal voltage and remains low until *all* enabled outputs recover and sustain regulation for the full programmed CSET delay period. This behavior is explicitly defined in Section 3.11 and Figure 2-36 of DS20005839B.

Can the MIC2800-G7SYML-TR be safely interfaced with a host processor's backup power domain?

Yes - the MIC2800-G7SYML-TR's LOWQ and POR pins are explicitly designed for backup-power-domain interfacing. As stated in Sections 3.1 and 3.11, both pins use ESD protection structures free of clamping diodes to VIN, eliminating parasitic leakage paths. This allows direct connection to host GPIOs powered from coin cells or supercaps even when main VIN is removed - a key differentiator confirmed in the datasheet.

What is the purpose of the CSET pin on the MIC2800-G7SYML-TR, and how is it configured?

The CSET pin on the MIC2800-G7SYML-TR sources a precise 1.25 µA current to charge an external capacitor to ground, setting the POR delay time from undervoltage recovery. Per Equation 3-1 in DS20005839B, delay (µs) equals the capacitor value in picofarads - e.g., a 100 nF capacitor yields a 100 ms delay. The pin must never be grounded; open-circuit defaults to minimum delay (~100 µs).

Does the MIC2800-G7SYML-TR support adjustable output voltages, and if so, which rails?

Only the DC/DC converter output is adjustable on the MIC2800-G7SYML-TR, using the FB pin with an external resistor divider to set VOUT based on the internal 800 mV reference. LDO1 and LDO2 are fixed-output variants - their voltages are determined by the specific part number suffix (G7SYML-TR indicates factory-trimmed fixed outputs per Microchip's ordering matrix). No adjustment is possible for the LDO rails without changing the device variant.