MIC2211-WSBML-TR

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The MIC2211-WSBML-TR is a dual µCap low dropout regulator manufactured by Microchip Technology. It provides two fixed positive outputs: Output 1 at 1.6V with a maximum current of 150mA, and Output 2 at 3.3V with a maximum current of 300mA. The device operates within an input voltage range of 2.25V to 5.5V and features a total quiescent current of 48µA. It utilizes a 10-pin 3mm × 3mm MLF™ package and includes thermal shutdown and current limit protection.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Dual independent regulators with separate enable pins for individual control
• Stable operation using small ceramic output capacitors
• Ultra-low ground current consumption in active and shutdown modes
• High accuracy with integrated thermal and current limit protection

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Cellular phones
• Wireless modems
• PDAs

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix BML against the datasheet ordering information to confirm the 1.6V/3.3V fixed output configuration. Ensure the TR designation matches the required reel packaging format. Cross-reference the manufacturer part number with official Microchip documentation to validate the lead-free status and package dimensions before procurement.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a compact dual-rail power solution is required for battery-operated portable electronics. The 1.6V and 3.3V outputs are suitable for powering baseband processors and I/O interfaces respectively. Consider the low dropout characteristics and high accuracy requirements of the target application circuitry.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the MIC2211 family of dual µCap LDOs from Micrel (now Microchip). The WSBML suffix specifically denotes the 1.6V/3.3V fixed voltage variant housed in the 10-pin MLF package. Other variants in the series offer different voltage combinations or adjustable outputs within the same physical footprint.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

MIC2211-WSYML

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the function of the CBYP pin?

The CBYP pin is used to bypass the internal reference voltage to ground with a capacitor to reduce output noise and increase power supply rejection ratio.

How are the enable inputs configured?

The EN1 and EN2 pins are active-high logic inputs that allow individual control of each regulator output. They must not be left floating.