MIC2821-4GJLYML-TR

Overview

The MIC2821-4GJLYML-TR is a digital power management integrated circuit (PMIC) manufactured by Microchip Technology. It integrates a single switching DC/DC converter and three independent Low Dropout (LDO) regulators, designed for handheld and mobile devices. The device operates within an input voltage range of 2.7 V to 5.5 V and supports output voltages adjustable from 1.2 V to 2.5 V. It features independent enables for the LDOs and includes Power-On Reset (POR) functionality. The component is housed in a 16-VQFN package with exposed pad (16-MLF® 4x4 mm), suitable for surface mount installation. It functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Integrates one switching regulator and three independent linear regulators for efficient multi-rail power distribution.
• Features independent enable controls for each LDO output to optimize power consumption in portable applications.
• Includes built-in Power-On Reset (POR) circuitry to ensure system stability during startup sequences.

Applications

• Handheld electronic devices
• Mobile communication equipment
• Portable consumer electronics requiring multi-voltage rails

Procurement Notes

Verify the specific suffix GJLYML against the manufacturer's current datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure compatibility with I2C or SPI control interfaces if digital configuration is utilized. Confirm moisture sensitivity level (MSL 3) handling procedures are followed during assembly to prevent package damage. Cross-reference the 16-MLF footprint dimensions with your PCB layout guidelines.

Selection Notes

Select this component when a compact solution combining switching efficiency and low-noise linear regulation is required for battery-powered systems. The 16-MLF package offers a small form factor suitable for space-constrained mobile designs. Consider the 2.7 V to 5.5 V input range compatibility with single-cell lithium-ion batteries. Verify that the thermal performance of the QFN package meets the thermal dissipation needs of the target application under maximum load conditions.

Part Context

This part belongs to the MIC28xx series of specialized PMICs from Microchip Technology, formerly Micrel. These components are engineered specifically for the stringent power density and efficiency demands of modern portable electronics. The series typically combines high-efficiency switching converters with precision LDOs to manage complex power sequencing in mobile platforms.

Replacement Considerations

Consult official Microchip documentation for direct cross-references. The MIC2810 series shares similar architectural features but may differ in regulator count or interface protocols. Verify functional equivalence regarding pinouts and control logic before substitution.