LD6836CX4/29P,315

Product Overview

The LD6836CX4/29P,315 from NXP USA Inc. is a fixed positive linear voltage regulator intended for compact surface-mount power conversion. The device provides a single 2.9V output at up to 300mA from an input voltage at or below 5.5V, with a maximum dropout of 0.16V at 300mA. Its 4-WLCSP package, 0.76 x 0.76, supports dense board layouts where a small footprint is important. The regulator includes an enable control and protection against over-current and over-temperature conditions. A quiescent current of 100 µA and a maximum supply current of 250 µA support low-power loads, while 55dB PSRR at 1kHz attenuates input supply noise on the regulated output. The operating range is -40°C to 85°C.

Key Features

• Fixed 2.9V positive output from one regulator channel.
• 300mA output current.
• Maximum input voltage of 5.5V.
• Maximum dropout of 0.16V at 300mA.
• Quiescent current of 100 µA and maximum supply current of 250 µA.
• PSRR of 55dB at 1kHz.
• Enable control feature.
• Over-current and over-temperature protection.
• 4-XFBGA, WLCSP surface-mount package, 0.76 x 0.76.
• Operating temperature range of -40°C to 85°C.

Applications

• Portable electronics requiring a regulated 2.9V rail for low-power circuits.
• Wireless or sensor modules where a small WLCSP footprint and low quiescent current are useful.
• Microcontroller or digital logic subsystems needing a fixed positive LDO output.
• Noise-sensitive analog or mixed-signal front ends where 55dB PSRR at 1kHz can suppress supply variations.
• Compact devices with surface-mount power management and enable-controlled output.

Design & Procurement Notes

Designers selecting this regulator should verify that the input voltage remains at or below the 5.5V maximum and that headroom above 2.9V is sufficient for the 0.16V dropout at the required load current. The 300mA output limit should be used to define the maximum load, while the enable control can be connected to a system power-up or sequencing circuit. Because the package is a 4-WLCSP surface-mount device, pad layout, solder volume, and thermal relief should be considered during PCB design. The -40°C to 85°C operating range, over-current protection, and over-temperature protection support basic environmental and fault-condition design margins, and the 100 µA quiescent current and 55dB PSRR at 1kHz are relevant when evaluating power consumption and output noise.