NXP Semiconductors LD6806CX4/13H,315

Overview

LD6806CX4/13H,315 from NXP Semiconductors is a 1.3 V, 200 mA ultra-low-dropout linear regulator in WLCSP4 (0.76 mm × 0.76 mm) package, 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 space-constrained mobile power rails for baseband processors and RF transceivers.

For engineers reviewing the LD6806CX4/13H,315 datasheet, LD6806CX4/13H,315 pinout, LD6806CX4/13H,315 application, or LD6806CX4/13H,315 equivalent, key selection criteria include its 1.3 V fixed output, thermal shutdown (160 °C), 55 dB PSRR at 1 kHz, 200 µs startup time, and compatibility with 1 µF X7R ceramic output capacitors in miniaturized portable electronics designs.

Technical Context

The LD6806CX4/13H,315 implements a PMOS pass transistor architecture enabling ultra-low dropout voltage and stable regulation under fast load transients. Its internal bandgap reference, error amplifier, and thermal/current protection circuitry are monolithically integrated in silicon, with enable logic independent of input voltage.

It delivers regulated 1.3 V output with ±0.5% initial accuracy at +25 °C and ±3% over −30 °C to +85 °C ambient, while maintaining 0.0025 %/mA load regulation and −0.1 to +0.1 %/V line regulation - critical for noise-sensitive analog and mixed-signal subsystems.

Key Specifications

Pinout & Package

LD6806CX4/13H,315 uses a 4-bump WLCSP (Wafer-Level Chip-Scale Package) measuring 0.76 mm × 0.76 mm × 0.47 mm with 0.4 mm pitch. Bump layout follows 2×2 grid; index area marks bump A1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A0513PDBVR and MCP1700T-1302E/TT, LD6806CX4/13H,315 offers the smallest footprint (0.76 mm²), lowest dropout (60 mV), and true 3-state disable - making it uniquely suited for next-generation mobile SoC power delivery where size, efficiency, and sequencing integrity are non-negotiable.

Availability

LD6806CX4/13H,315 is available at Aetrix Electronics and suitable for mobile handset power management, wearable sensor hubs, and USB-C peripheral power requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for LD6806CX4/13H,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 mobile markets.

The LD6806 series was designed specifically for miniaturized portable electronics, delivering ultra-low-noise, ultra-low-dropout regulation in wafer-level chip-scale packages to meet aggressive size and power-efficiency targets in smartphones and wearables.

FAQ

What is the nominal output voltage of LD6806CX4/13H,315?

The LD6806CX4/13H,315 provides a fixed nominal output voltage of 1.3 V, as indicated by the "13H" suffix in the part number per Table 5 of the NXP datasheet. This value is trimmed during production and guaranteed within ±0.5% at +25 °C and ±3% across −30 °C to +85 °C ambient operating conditions. The LD6806CX4/13H,315 does not support adjustable output via external resistors.

Does LD6806CX4/13H,315 support high-ohmic output during disable?

Yes, LD6806CX4/13H,315 features a high-ohmic (3-state) output when disabled, as confirmed by the "H" suffix in its type number and explicitly stated in Section 1.2 of the datasheet. When the EN pin is driven LOW (≤0.4 V), the OUT pin enters a high-impedance state, preventing back-current flow and enabling safe power sequencing in multi-rail systems.

What is the recommended output capacitor for LD6806CX4/13H,315?

The recommended output capacitor for LD6806CX4/13H,315 is a 1.0 µF X7R ceramic capacitor with ESR between 5 mΩ and 500 mΩ, as specified in Table 11 and Section 10.1 of the datasheet. Minimum capacitance is 0.7 µF; tolerance must be ±30% or better over −40 °C to +125 °C. This ensures stability, meets 200 µs startup timing, and maintains PSRR performance.

What thermal protection features does LD6806CX4/13H,315 include?

LD6806CX4/13H,315 integrates thermal shutdown protection that disables regulation when junction temperature reaches 160 °C, with 20 K hysteresis (T_sd(hys)). Once tripped, the device remains off until junction temperature falls below 140 °C. This feature is implemented in silicon and requires no external components, safeguarding against sustained overload or inadequate PCB copper area.

Is LD6806CX4/13H,315 compatible with lead-free reflow soldering processes?

Yes, LD6806CX4/13H,315 is fully compatible with lead-free reflow soldering. As a WLCSP4 package, it follows J-STD-020C Level 1 moisture sensitivity and requires peak reflow temperatures up to 260 °C. The package thickness (0.47 mm) and volume (<350 mm³) place it in the highest thermal class, and NXP confirms all WLCSP packages are lead-free and qualified for standard Pb-free profiles.