NXP Semiconductors LD6836CX4/30H,315

Overview

LD6836CX4/30H,315 from NXP Semiconductors is a 3.0 V fixed-output, 300 mA ultra-low-dropout linear regulator in a 0.4 mm pitch WLCSP4 package (0.76 × 0.76 × 0.47 mm), featuring 90 mV dropout at full load, 30 µV_RMS output noise (10 Hz–100 kHz), and high-ohmic (3-state) output during disable. It delivers stable power to noise-sensitive analog/digital interfaces in space-constrained portable electronics.

For engineers reviewing the LD6836CX4/30H,315 datasheet, LD6836CX4/30H,315 pinout, LD6836CX4/30H,315 application, or LD6836CX4/30H,315 equivalent, this page provides verified electrical specs, WLCSP4 terminal mapping, thermal performance data, PSRR (55 dB @ 1 kHz), and validated alternatives for mobile power rail design.

Technical Context

The LD6836CX4/30H,315 uses a PMOS pass transistor architecture enabling ultra-low dropout (90 mV typ. @ 300 mA) and fast start-up (150 µs). Its internal voltage reference and error amplifier maintain ±0.5% output accuracy over temperature (−40 °C to +85 °C) with line regulation of ±0.1 %/V and load regulation of 0.0025 %/mA.

It integrates over-temperature shutdown (160 °C trigger, 20 K hysteresis), output current limiting (600 mA short-circuit), and 10 kV HBM ESD protection. The high-ohmic disable state (EN = LOW) isolates the output without pull-down, preserving downstream bias conditions in multi-rail systems.

Key Specifications

Pinout & Package

LD6836CX4/30H,315 is housed in a 0.4 mm pitch Wafer-Level Chip-Scale Package (WLCSP4) measuring 0.76 mm × 0.76 mm × 0.47 mm, optimized for ultra-miniaturized portable designs. Solder bumps are arranged in a 2×2 grid with index area marking pin A1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with LD6836CX4/30P, LD6836CX4/30H,315 avoids unintended discharge of hold-up capacitors in multi-rail systems; versus TPS7A0530PDBVR, it saves >75% PCB area and achieves 48% lower dropout - critical for battery longevity and miniaturization.

Availability

LD6836CX4/30H,315 is available at Aetrix Electronics and suitable for smartphone baseband power, digital camera sensor bias, portable media player audio codec, and personal navigation device GPS front-end applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for LD6836CX4/30H,315 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

NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and consumer electronics, with leadership in power management, RF, and microcontrollers.

The LD6836 series was designed specifically for ultra-miniaturized portable electronics demanding ultra-low-noise, ultra-low-dropout regulation in wafer-level chip-scale packages - targeting smartphones, wearables, and imaging modules.

FAQ

What is the nominal output voltage and tolerance of the LD6836CX4/30H,315?

The LD6836CX4/30H,315 delivers a fixed 3.0 V output with ±2% tolerance over the full operating temperature range (−40 °C to +85 °C) and load (1 mA to 300 mA). This specification is guaranteed per Table 12 in the NXP datasheet and enables direct substitution in 3.0 V logic and analog circuits without external trimming components.

Does the LD6836CX4/30H,315 require external capacitors, and what are the recommended values?

Yes, the LD6836CX4/30H,315 requires both input and output ceramic capacitors for stability. Per Section 10.1 and Table 13, use 0.7–1.0 µF X7R type capacitors (±30% tolerance) with ESR between 5 mΩ and 500 mΩ. Place the 1.0 µF output capacitor within 2 mm of the OUT and GND pins to ensure 150 µs startup and prevent oscillation.

How does the enable function operate on the LD6836CX4/30H,315?

The LD6836CX4/30H,315 features an active-HIGH enable pin (EN). When EN ≥ 1.1 V, the regulator powers up with 150 µs start-up time; when EN ≤ 0.4 V, the output enters high-ohmic (3-state) disable mode with <1 µA quiescent current. This behavior is confirmed in Table 12 and Figure 19 of the datasheet and supports precise power sequencing in multi-voltage systems.

What thermal derating applies to the LD6836CX4/30H,315 in its WLCSP4 package?

The LD6836CX4/30H,315 has a junction-to-ambient thermal resistance (R_th(j-a)) of 130 K/W on a standard 2-layer PCB. At 85 °C ambient, maximum continuous power dissipation is limited to 770 mW (per Table 9), corresponding to ~257 mA at 3.0 V output. Adequate copper pour and thermal vias beneath the package are required to sustain full 300 mA load at elevated temperatures.

Is the LD6836CX4/30H,315 RoHS-compliant and halogen-free?

Yes, the LD6836CX4/30H,315 is fully RoHS-compliant and halogen-free (including antimony-free), meeting NXP's "dark green" environmental standard as stated in Section 1.2. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), and is qualified for consumer applications per NX1-00023.