My Inquiry
My Account
NXP Semiconductors LD6816CX4/20H,315
- Part No.:
- LD6816CX4/20H,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6816CX4/20H,315.pdf
- Description:
- IC REG LINEAR 2V 150MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:18,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LD6816CX4/20H,315 from NXP Semiconductors is a 2.0 V fixed-output, 150 mA ultra-low-dropout linear regulator in WLCSP4 package, featuring 45 mV dropout at full load, 30 µVRMS output noise (10 Hz–100 kHz), and high-ohmic (3-state) output during disable-designed for power-sensitive mobile interfaces in smartphones and portable media players.
For engineers reviewing the LD6816CX4/20H,315 datasheet, LD6816CX4/20H,315 pinout, LD6816CX4/20H,315 application, or LD6816CX4/20H,315 equivalent, this page delivers verified electrical specs, thermal behavior, enable timing, PSRR performance, and WLCSP4 layout guidance required for low-noise, miniaturized supply rail design.
Technical Context
The LD6816CX4/20H,315 employs a PMOS pass transistor architecture enabling ultra-low dropout (45 mV @ 150 mA) and stable operation with only 1.0 µF ceramic output capacitance. Its internal voltage reference and error amplifier maintain ±0.5% output accuracy at 25 °C and ±3% over −40 °C to +85 °C ambient.
It integrates active-high enable logic (VIH = 1.1 V min), thermal shutdown (160 °C), current limiting (600 mA short-circuit), and 10 kV HBM ESD protection. The high-ohmic disable state eliminates output leakage paths, supporting clean system-level power sequencing without external discharge circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.0 V ±3% over −40 °C to +85 °C - ensures stable core/interface rail for 2.0 V logic domains without external feedback. |
| Dropout Voltage | 45 mV typical at 150 mA - enables regulation from 2.045 V input, critical for battery-powered systems near end-of-discharge. |
| PSRR | 55 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz) - meets low-noise requirements for RF biasing, ADC references, and audio analog stages. |
| Quiescent Current | 0.1 µA typical in shutdown (VEN ≤ 0.4 V) - minimizes standby power in always-on subsystems like real-time clocks or sensors. |
| Start-up Time | <150 µs to 95% of 2.0 V - supports fast wake-up sequences in portable devices with aggressive power management. |
| Enable Threshold | VIL ≤ 0.4 V, VIH ≥ 1.1 V - compatible with 1.8 V and higher GPIOs without level-shifting. |
Pinout & Package
Package: Wafer-Level Chip-Scale Package (WLCSP4), 0.76 mm × 0.76 mm × 0.47 mm, 0.4 mm bump pitch, Pb-free/RoHS/halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (A1) | Supply ground reference | Primary return path for regulator current; must connect to solid ground plane for thermal and noise performance. |
| EN (A2) | Active-HIGH enable input | Drives internal pass transistor; pulled low disables regulator and places OUT in high-impedance state. |
| OUT (B1) | Regulated output voltage | Delivers 2.0 V to load; requires ≥1.0 µF X7R ceramic capacitor with 5–500 mΩ ESR for stability. |
| IN (B2) | Input voltage supply | Accepts 2.3 V–5.5 V; bypass with local 1 µF capacitor recommended to reduce input ripple and improve PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 45 mV at 150 mA enables operation from single-cell Li-ion (2.7–4.2 V) down to ~2.05 V input. |
| Low-noise regulation | 30 µVRMS noise supports precision analog circuits without requiring additional filtering stages. |
| High-ohmic disable | Open-circuit output during shutdown prevents back-powering or unintended loading of downstream circuitry. |
| Fast transient response | Sub-150 µs start-up and <300 µs shutdown support dynamic power gating in multi-rail SoC systems. |
| Robust protection | Integrated thermal shutdown (160 °C), current limit (600 mA), and 10 kV HBM ESD ensure field reliability in handheld environments. |
Applications
| Smartphone Baseband Power | Digital Camera Sensor Bias |
|---|---|
|
Use Scenario: Supplies clean 2.0 V bias to baseband processor I/O banks during LTE/Wi-Fi burst transmission. IC Role / Device Role / Timing Role: Low-noise post-regulator stabilizing switched-mode supply output; enables fast enable/disable synchronized with RF activity. Use Value: 55 dB PSRR attenuates DC-DC ripple; 30 µVRMS noise prevents SNR degradation in sensitive receive chains. |
Use Scenario: Powers CMOS image sensor analog front-end requiring stable, low-noise 2.0 V reference under variable illumination loads. IC Role / Device Role / Timing Role: Precision LDO delivering regulated rail independent of battery voltage sag during flash LED activation. Use Value: 45 mV dropout maintains regulation down to 2.045 V input; ±3% accuracy ensures consistent pixel response across temperature. |
| Portable Media Player Audio DAC | Bluetooth LE SoC Core Rail |
|
Use Scenario: Provides dedicated 2.0 V supply to stereo DAC in battery-powered media players with dynamic volume control. IC Role / Device Role / Timing Role: Low-noise analog supply isolating DAC from digital switching noise on shared PCB planes. Use Value: 30 µVRMS noise directly translates to >100 dB THD+N; high-ohmic disable prevents pop/click during playback pause. |
Use Scenario: Powers 2.0 V core domain of Bluetooth 5.0 SoC during advertising interval and connection events. IC Role / Device Role / Timing Role: Fast-starting, low-quiescent LDO enabling microsecond-scale wake-up from deep sleep mode. Use Value: 0.1 µA shutdown current extends battery life; <150 µs start-up meets BLE sub-millisecond latency requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B202MR-G | 2.0 V fixed, 150 mA, 60 mV dropout, SOT-25 package (2.9 × 2.8 mm), no enable pin | Larger footprint; lacks active enable and high-ohmic disable - unsuitable for sequenced power-down | Select when board space permits larger package and enable control is handled externally. |
| Richtek RT9013-20GB | 2.0 V fixed, 300 mA, 250 mV dropout, SOT-23-5 package, active-low enable | Higher dropout limits low-VIN operation; active-low EN requires inverter for GPIO compatibility | Choose only if higher output current is needed and input voltage margin exceeds 2.25 V. |
Compared with XC6210B202MR-G and RT9013-20GB, LD6816CX4/20H,315 uniquely combines ultra-low dropout, enable-controlled 3-state output, and 0.76 mm² WLCSP4 packaging - making it optimal for space-constrained, low-noise, and dynamically powered mobile subsystems where input voltage headroom and sequencing integrity are critical.
Availability
LD6816CX4/20H,315 is available at Aetrix Electronics and suitable for smartphone baseband power, portable camera sensor bias, Bluetooth LE SoC core rails, and portable media player audio DAC supplies requiring stable component supply with tight parametric consistency and long-term lifecycle assurance.
Supply support for LD6816CX4/20H,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 leader focused on secure connectivity solutions for automotive, industrial, and consumer markets, with deep expertise in power management ICs and RF/analog integration.
The LD6816 series was designed specifically for ultra-miniaturized, low-noise power delivery in portable electronics - targeting applications where WLCSP packaging, sub-50 mV dropout, and high-ohmic disable are mandatory for system-level power efficiency and signal integrity.
FAQ
What is the nominal output voltage and tolerance of LD6816CX4/20H,315?
The LD6816CX4/20H,315 provides a fixed 2.0 V output with ±0.5% tolerance at +25 °C and ±3% over the full operating temperature range of −40 °C to +85 °C. This accuracy is guaranteed across input voltages from 2.3 V to 5.5 V and load currents up to 150 mA, ensuring reliable operation in battery-powered portable systems where voltage margins are tight.
Does LD6816CX4/20H,315 support active discharge during disable?
No, LD6816CX4/20H,315 does not include an auto-discharge function. As indicated by the "H" suffix, it enters a high-ohmic (3-state) output condition when disabled via the EN pin. This differs from "P" or "CxxP" variants, which integrate a pull-down transistor. For applications requiring rapid output discharge, an external resistor or alternative "P"-suffixed part must be used.
What is the minimum recommended output capacitance for LD6816CX4/20H,315?
The LD6816CX4/20H,315 requires a minimum 0.7 µF ceramic output capacitor for stability, with 1.0 µF recommended. The capacitor must be X7R dielectric, rated for −40 °C to +125 °C, and exhibit 5–500 mΩ equivalent series resistance (ESR). Using less than 0.7 µF risks oscillation or poor transient response, especially under dynamic load conditions.
How does the PSRR of LD6816CX4/20H,315 perform at higher frequencies?
LD6816CX4/20H,315 delivers 55 dB PSRR at 1 kHz, but performance degrades with frequency: approximately 40 dB at 10 kHz and 20 dB at 100 kHz. This behavior is typical for PMOS-based LDOs and reflects diminishing loop gain at higher frequencies. For broadband noise suppression, pairing LD6816CX4/20H,315 with a front-end LC filter is recommended.
Is LD6816CX4/20H,315 compatible with lead-free reflow soldering processes?
Yes, LD6816CX4/20H,315 is fully compatible with lead-free reflow soldering per J-STD-020C. Its WLCSP4 package has a moisture sensitivity level (MSL) requiring handling per MSL3 guidelines, and peak reflow temperature must not exceed 260 °C for packages <1.6 mm thick - well within the device's thermal specifications and footprint design.
LD6816CX4/20H,315 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 4-XFBGA, WLCSP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.075V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 250 µA
- PSRR:
- 55dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Transient Voltage
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-WLCSP (0.76x0.76)
LD6816CX4/20H,315 FAQ
1.How can I place an order for LD6816CX4/20H,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6816CX4/20H,315 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LD6816CX4/20H,315 reliable?
The price and inventory of LD6816CX4/20H,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6816CX4/20H,315 is usually 5 days.
3.What payment methods are accepted for LD6816CX4/20H,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6816CX4/20H,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6816CX4/20H,315?
LD6816CX4/20H,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6816CX4/20H,315 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LD6816CX4/20H,315?
For technical support, including LD6816CX4/20H,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6816CX4/20H,315 requirements.
6.How does Aetrix verify that LD6816CX4/20H,315 is sourced from the original manufacturer or authorized distributors?
All LD6816CX4/20H,315 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LD6816CX4/20H,315 meets industry standards.
7.What is the process for return or replacement of LD6816CX4/20H,315?
All LD6816CX4/20H,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6816CX4/20H,315, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LD6816CX4/20H,315 part is unused and in its original packaging.
Return procedure for LD6816CX4/20H,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LD6816CX4/20H,315 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
