LD6816CX4/36H,315

Product Overview

The LD6816CX4/36H,315 from NXP USA Inc. is a positive fixed-output linear voltage regulator IC in a 4-WLCSP (0.76x0.76) surface-mount package. It provides a single 3.6 V output at up to 150 mA, with a maximum dropout voltage of 0.075 V at 150 mA. The device accepts input voltages up to 5.5 V and includes an enable control feature, over-current protection, over-temperature protection, and transient-voltage protection. Its quiescent current is 100 µA, supply current is up to 250 µA, and power-supply rejection is 55 dB at 1 kHz. The operating temperature range is -40°C to 85°C.

Key Features

• Single positive fixed 3.6 V linear regulator output.
• 150 mA maximum output current with 0.075 V maximum dropout at 150 mA.
• Enable control feature for regulator output control.
• Protection against over-current, over-temperature, and transient-voltage conditions.
• 100 µA quiescent current and 250 µA maximum supply current.
• 55 dB PSRR at 1 kHz.
• Compact 4-XFBGA, WLCSP surface-mount package measuring 0.76x0.76.
• Operating temperature range of -40°C to 85°C.

Applications

• Fixed 3.6 V rail for low-current portable devices.
• Enable-controlled 3.6 V supply for compact sensor modules.
• 3.6 V logic supply in battery-operated equipment.

Design & Procurement Notes

Designers should verify that the input supply remains above the 3.6 V output plus the 0.075 V maximum dropout at the required load current, while not exceeding the 5.5 V maximum input rating. The fixed 3.6 V output and single regulator architecture simplify rail selection but do not provide adjustable output flexibility. The 4-WLCSP package supports compact layouts, and the enable control allows the regulator to be integrated into system power management. The 150 mA output limit should be matched to the load profile, and the device includes over-current, over-temperature, and transient-voltage protections for use in the -40°C to 85°C operating range.