NXP Semiconductors LD6836CX4/22H,315

Overview

LD6836CX4/22H,315 from NXP Semiconductors is a 2.2 V fixed-output, 300 mA ultra-low-dropout linear regulator in a 0.4 mm pitch WLCSP4 package (0.76 mm × 0.76 mm × 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 - designed for power-sensitive portable applications including smartphone baseband ICs and camera sensor rails.

For engineers reviewing the LD6836CX4/22H,315 datasheet, LD6836CX4/22H,315 pinout, LD6836CX4/22H,315 application, or LD6836CX4/22H,315 equivalent, key selection criteria include its 2.2 V output accuracy (±0.5% at +25°C), 55 dB PSRR at 1 kHz, 150 µs startup time, and thermal shutdown at 160°C - all validated for operation across −40°C to +85°C ambient.

Technical Context

The LD6836CX4/22H,315 implements a PMOS pass transistor architecture enabling ultra-low dropout voltage and stable regulation with only 0.7 µF external output capacitance. Its enable input (active HIGH, VIH ≥ 1.1 V) controls a high-impedance output state when disabled, eliminating residual leakage paths in battery-powered systems.

Internal protection includes overcurrent limiting (600 mA short-circuit current), thermal shutdown with 20 K hysteresis, and integrated 10 kV HBM ESD protection. The device operates across 2.3 V–5.5 V input while maintaining ±3% output voltage variation over full temperature range and load (1–300 mA).

Key Specifications

Pinout & Package

LD6836CX4/22H,315 uses a 4-bump Wafer-Level Chip-Scale Package (WLCSP4) with 0.4 mm pitch and footprint 0.76 mm × 0.76 mm. Solder bumps face downward; bump A1 serves as index marker.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LD6836CX4/22H,315, the XC6210B222MR-G offers identical output but requires PCB area 5× larger and lacks true high-Z disable, while the RT9013-22GB trades 60 mV higher dropout and reduced ESD robustness for slightly smaller footprint - making LD6836CX4/22H,315 optimal for miniaturized, noise-critical, and battery-efficient portable systems.

Availability

LD6836CX4/22H,315 is available at Aetrix Electronics and suitable for smartphone baseband power, digital camera sensor rails, portable media player audio codecs, and personal navigation device GPS front-ends requiring stable component supply with guaranteed long-term availability.

Supply support for LD6836CX4/22H,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 markets, with leadership in power management, RF, and embedded processing.

The LD6836 series was developed specifically for ultra-miniaturized, low-noise, and high-efficiency power delivery in portable electronics - targeting stringent space, thermal, and EMI constraints in smartphones, wearables, and imaging modules.

FAQ

What is the output voltage tolerance of LD6836CX4/22H,315 over temperature?

The LD6836CX4/22H,315 maintains ±3% output voltage variation across −40°C to +85°C ambient temperature, with tighter ±0.5% tolerance at +25°C. This specification ensures reliable operation for 2.2 V–rated logic and analog circuits without external trimming, as confirmed in Table 12 of the NXP datasheet Rev. 2.

Does LD6836CX4/22H,315 support active discharge when disabled?

No - LD6836CX4/22H,315 features high-ohmic (3-state) output during disable, not auto-discharge. Only "P" variants (e.g., LD6836CX4/22P) integrate a pull-down transistor. The "H" suffix in LD6836CX4/22H,315 explicitly denotes high-impedance disable behavior per Tables 4 and 14 of the datasheet.

What minimum output capacitance is required for stable operation of LD6836CX4/22H,315?

LD6836CX4/22H,315 requires a minimum 0.7 µF X7R ceramic capacitor on the OUT pin, with ESR between 5 mΩ and 500 mΩ, as specified in Table 13 and Section 10.1. Using 1.0 µF is recommended for optimal transient response and PSRR performance across temperature.

Can LD6836CX4/22H,315 operate from a 2.3 V input while delivering 300 mA at 2.2 V?

Yes - LD6836CX4/22H,315 guarantees 90 mV typical dropout at 300 mA, meaning it regulates stably with VIN as low as 2.29 V (2.2 V + 90 mV). At 2.3 V input, it delivers full 300 mA output with margin, per Table 12's dropout voltage specification under "LD6836CX4, LD6836CX4/C" conditions.

Is LD6836CX4/22H,315 RoHS-compliant and halogen-free?

Yes - LD6836CX4/22H,315 is Pb-free, RoHS-compliant, and fully halogen- and antimony-free ("dark green compliant"), as stated in Section 1.2 Features and Benefits and confirmed in the product data sheet Rev. 2.