NXP Semiconductors LD6806CX4/30H,315

Overview

LD6806CX4/30H,315 from NXP Semiconductors is a 3.0 V, 200 mA ultra-low-dropout linear regulator in WLCSP4 package (0.76 mm × 0.76 mm × 0.47 mm), featuring 60 mV dropout at 200 mA, 30 µV_RMS output noise (10 Hz–100 kHz), and high-ohmic (3-state) output during disable. It operates from 2.3 V to 5.5 V input and targets power-sensitive mobile handset and media player subsystems requiring stable low-noise bias.

For engineers reviewing the LD6806CX4/30H,315 datasheet, LD6806CX4/30H,315 pinout, LD6806CX4/30H,315 application, or LD6806CX4/30H,315 equivalent, key selection criteria include its WLCSP4 footprint constraints, enable-threshold compatibility (V_IL ≤ 0.4 V, V_IH ≥ 1.4 V), thermal shutdown hysteresis (20 K), and PSRR of −55 dB at 1 kHz - all critical for compact battery-powered analog/digital interface rails.

Technical Context

The LD6806CX4/30H,315 implements a PMOS pass transistor architecture enabling ultra-low dropout and fast 200 µs startup. Its internal reference generator feeds a precision error amplifier that drives the pass element while monitoring output voltage via external resistor divider feedback (not applicable here - fixed-output variant).

Thermal protection triggers at 160 °C junction temperature with 20 K hysteresis, and overcurrent limiting caps peak output at 300 mA under fault conditions. The device maintains regulation across −40 °C to +85 °C ambient, with load regulation error ≤ 0.01 %/mA and line regulation error ±0.1 %/V.

Key Specifications

Pinout & Package

LD6806CX4/30H,315 uses the wafer-level chip-scale package WLCSP4 (4-bump, 2×2 array), measuring 0.76 mm × 0.76 mm × 0.47 mm with 0.4 mm bump pitch. The package is Pb-free, RoHS-compliant, and halogen-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP2112K-3.0TRG1 and XC6206P302MR-G, LD6806CX4/30H,315 delivers superior battery efficiency via 60 mV dropout, essential 3-state disable for power domain isolation, and tighter thermal management - making it optimal for miniaturized, battery-constrained portable electronics.

Availability

LD6806CX4/30H,315 is available at Aetrix Electronics and suitable for mobile handset power management, wireless audio biasing, portable display drivers, and wearable sensor hub designs requiring stable component supply with guaranteed long-term availability.

Supply support for LD6806CX4/30H,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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer markets.

The LD6806 series was designed specifically for ultra-compact, low-noise power regulation in space-constrained portable electronics - emphasizing miniaturization, battery efficiency, and robustness in thermally demanding environments.

FAQ

What is the maximum input voltage rating for LD6806CX4/30H,315?

The LD6806CX4/30H,315 supports an absolute maximum input voltage of +6.0 V for transient events up to 4 ms, with recommended continuous operation between 2.3 V and 5.5 V. Exceeding 6.0 V risks permanent damage, and operation below 2.3 V fails to maintain regulation at 3.0 V output. This range aligns with single-cell Li-ion (2.7–4.2 V) and Li-poly (2.5–4.35 V) battery systems.

Does LD6806CX4/30H,315 require an external output capacitor, and what type is recommended?

Yes, LD6806CX4/30H,315 requires a minimum 1.0 µF X7R ceramic capacitor on the OUT pin for stability, with ESR between 5 mΩ and 500 mΩ. The capacitor must meet ±30 % tolerance over −40 °C to +125 °C. Using lower capacitance or inappropriate dielectric (e.g., Y5V) risks oscillation or degraded transient response, especially under dynamic load changes typical in mobile processors.

How does the high-ohmic output state function during disable on LD6806CX4/30H,315?

When the EN pin voltage falls below 0.4 V, LD6806CX4/30H,315 disables and places the OUT pin in a high-impedance (3-state) condition - effectively disconnecting the 3.0 V rail from downstream circuitry. This prevents back-powering, enables safe power sequencing in multi-domain SoC systems, and eliminates leakage paths that could drain battery during deep sleep modes.

What is the thermal shutdown behavior of LD6806CX4/30H,315, and how does hysteresis affect recovery?

LD6806CX4/30H,315 shuts down at 160 °C junction temperature and remains off until the junction cools by at least 20 K (to ≤140 °C) before re-enabling. This hysteresis prevents thermal cycling during marginal overheating conditions. The WLCSP4 package's R_th(j-a) of 130 K/W means sustained 200 mA loads on minimal copper can reach shutdown without adequate PCB thermal relief.

Can LD6806CX4/30H,315 be used with 1.8 V GPIOs for enable control?

Yes, LD6806CX4/30H,315 is fully compatible with 1.8 V logic: its enable input accepts V_IH ≥ 1.4 V (satisfied by 1.8 V outputs) and V_IL ≤ 0.4 V (ensuring clean disable with 1.8 V logic LOW). No level shifter is required, simplifying integration with modern low-voltage microcontrollers and application processors.