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NXP Semiconductors LD6816CX4/36H,315
- Part No.:
- LD6816CX4/36H,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6816CX4/36H,315.pdf
- Description:
- IC REG LINEAR 3.6V 150MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
LD6816CX4/36H,315 from NXP Semiconductors is a 3.6 V fixed-output, 150 mA ultra-low-dropout linear regulator in WLCSP4 package with 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 LD6816CX4/36H,315 datasheet, LD6816CX4/36H,315 pinout, LD6816CX4/36H,315 application, or LD6816CX4/36H,315 equivalent, key selection criteria include its 2.3–5.5 V input range, 0.1 µA shutdown quiescent current, 55 dB PSRR at 1 kHz, thermal/overcurrent protection, and WLCSP miniaturization for space-constrained PCBs.
Technical Context
The LD6816CX4/36H,315 implements a PMOS pass transistor architecture enabling ultra-low dropout voltage and stable regulation across −40 °C to +85 °C ambient. Its enable input (EN) operates with TTL-compatible thresholds (VIL ≤ 0.4 V, VIH ≥ 1.1 V) and supports fast turn-on (<150 µs) without external sequencing.
Internal circuitry integrates over-temperature shutdown (160 °C trip, 20 K hysteresis), output current limiting (600 mA short-circuit), and ESD protection rated to ±10 kV HBM. The high-ohmic disable state isolates the output without pull-down, preserving downstream bias integrity in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.6 V ±2% over −40 °C to +85 °C; ensures stable core/peripheral supply for 3.3 V–3.6 V logic domains. |
| Dropout Voltage | 45 mV typical at 150 mA; enables operation with only 3.645 V input, maximizing battery runtime in single-cell Li-ion systems. |
| Quiescent Current | 0.1 µA typical in shutdown (EN ≤ 0.4 V); minimizes leakage in always-on subsystems like real-time clocks or wake-up controllers. |
| PSRR | 55 dB at 1 kHz; suppresses switching noise from adjacent DC-DC converters feeding shared input rails. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz); meets low-noise requirements for RF front-ends, ADC references, and audio codecs. |
| Enable Threshold | VIH = 1.1 V min, VIL = 0.4 V max; compatible with 1.8 V and 3.3 V GPIOs without level-shifting. |
| Thermal Protection | 160 °C shutdown with 20 K hysteresis; prevents latch-up during transient overload or poor PCB thermal design. |
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 | Controls LDO operation; floating defaults to disabled; requires no external pull-up for low-power systems. |
| OUT (B1) | Regulated output voltage | Delivers 3.6 V to load; high-ohmic (3-state) when disabled-no auto-discharge, preserving downstream node voltage. |
| IN (B2) | Input voltage supply | Accepts 2.3–5.5 V; requires ≥0.7 µF X7R ceramic capacitor with 5–500 mΩ ESR for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 45 mV at 150 mA enables use with <3.7 V sources-critical for extending discharge depth in Li-ion batteries. |
| Low-noise regulation | 30 µVRMS noise supports precision analog circuits without requiring additional filtering stages. |
| High-ohmic disable | True 3-state output eliminates load discharge path, preventing unintended current flow into powered-down subsystems. |
| Integrated protection | Over-temperature shutdown (160 °C) and current limiting (600 mA) reduce need for external fault management circuitry. |
| Miniature WLCSP | 0.76 mm × 0.76 mm footprint saves >70% board area vs. SOT-23, enabling ultra-thin mobile and wearable designs. |
Applications
| Smartphone Core Logic | Portable Media Player Audio |
|---|---|
|
Use Scenario: Powering application processor I/O banks and memory interfaces requiring clean, tightly regulated 3.6 V supply. IC Role / Device Role / Timing Role: Primary low-noise LDO delivering stable voltage under dynamic load transients during video decode or UI rendering. Use Value: 55 dB PSRR rejects ripple from buck converters; 45 mV dropout extends usable battery voltage range by ~120 mV per cycle. |
Use Scenario: Supplying DAC, headphone amplifier, and codec analog sections in battery-powered music players. IC Role / Device Role / Timing Role: Low-noise post-regulator ensuring minimal SNR degradation in audio signal chain. Use Value: 30 µVRMS noise avoids audible hiss; high-ohmic disable prevents pop/click during playback pause. |
| Digital Still Camera Sensor Bias | Personal Navigation Device GPS Front-End |
|
Use Scenario: Providing bias voltage to CMOS image sensor analog blocks where supply noise directly impacts image quality. IC Role / Device Role / Timing Role: Dedicated LDO for sensor analog supply rail, isolated from noisy digital domains via high-ohmic disable. Use Value: Tight ±2% output accuracy maintains consistent sensor gain calibration; miniature WLCSP fits tight camera module layouts. |
Use Scenario: Powering GPS/GNSS RF front-end LNA and mixer stages requiring ultra-low phase noise supply. IC Role / Device Role / Timing Role: Clean 3.6 V source minimizing close-in phase noise contribution to GPS receiver sensitivity. Use Value: 30 µVRMS noise and 55 dB PSRR prevent local oscillator pulling and improve C/N0 by up to 2 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B362MR-G | 3.6 V fixed, 150 mA, 65 mV dropout (at 100 mA), 25 µVRMS noise, SOT-25 package (2.9 × 2.8 mm) | Larger footprint; lower noise but higher dropout reduces battery efficiency in deep-discharge scenarios. | Select when board space allows larger package and ultra-low noise outweighs dropout penalty. |
| Richtek RT9013-36GB | 3.6 V fixed, 300 mA, 250 mV dropout (at 300 mA), 45 µVRMS noise, DFN-6 (2.0 × 2.0 mm) | Higher current rating and larger package; higher noise and dropout limit suitability for battery-critical apps. | Choose only if >150 mA load headroom or DFN assembly infrastructure is required. |
Compared with XC6219B362MR-G and RT9013-36GB, LD6816CX4/36H,315 delivers superior dropout performance in the smallest footprint-enabling longer runtime in space-constrained Li-ion devices where every millivolt and square millimeter matters.
Availability
LD6816CX4/36H,315 is available at Aetrix Electronics and suitable for smartphone power management, portable audio subsystems, and GPS front-end biasing requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LD6816CX4/36H,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 expertise in power management ICs and miniaturized packaging.
The LD6816 series was developed specifically for ultra-compact, low-noise, high-efficiency power regulation in portable electronics-addressing demand for smaller footprints, lower dropout, and tighter output accuracy in battery-powered devices.
FAQ
What is the nominal output voltage and tolerance of the LD6816CX4/36H,315?
The LD6816CX4/36H,315 provides a fixed 3.6 V output with ±2% tolerance over −40 °C to +85 °C ambient temperature and 1 mA to 150 mA load current. This accuracy is guaranteed across process, voltage, and temperature variations, making LD6816CX4/36H,315 suitable for powering precision analog and mixed-signal circuits without external trimming.
Does the LD6816CX4/36H,315 include built-in protection features?
Yes, LD6816CX4/36H,315 integrates over-temperature shutdown (160 °C trip with 20 K hysteresis), output current limiting (600 mA short-circuit protection), and ±10 kV HBM ESD protection. These features eliminate the need for external protection components in most portable designs, reducing BOM count and improving system reliability.
How does the high-ohmic disable mode of the LD6816CX4/36H,315 differ from auto-discharge variants?
LD6816CX4/36H,315 enters a true high-ohmic (3-state) output condition when disabled-disconnecting the output from both IN and GND. Unlike LD6816CX4/36P variants with integrated pull-down transistors, LD6816CX4/36H,315 preserves downstream node voltage, preventing unintended discharge in multi-rail systems where isolation is critical.
What is the recommended output capacitor for stable operation of the LD6816CX4/36H,315?
The LD6816CX4/36H,315 requires a minimum 0.7 µF X7R ceramic capacitor at the OUT pin, with recommended value of 1.0 µF and ESR between 5 mΩ and 500 mΩ. Using capacitors outside this range may cause instability or excessive startup/shutdown time-verified in LD6816CX4/36H,315 characterization across temperature and load conditions.
Can the LD6816CX4/36H,315 operate from a single-cell lithium-ion battery?
Yes, LD6816CX4/36H,315 supports input voltages from 2.3 V to 5.5 V, covering the full discharge curve of a single-cell Li-ion battery (4.2 V down to ~2.7 V). With only 45 mV dropout at 150 mA, it continues regulating until the battery reaches ~3.645 V-maximizing usable energy and runtime in portable devices using LD6816CX4/36H,315.
LD6816CX4/36H,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):
- 3.6V
- 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)
LD6816CX4/36H,315 FAQ
1.How can I place an order for LD6816CX4/36H,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6816CX4/36H,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 LD6816CX4/36H,315 reliable?
The price and inventory of LD6816CX4/36H,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6816CX4/36H,315 is usually 5 days.
3.What payment methods are accepted for LD6816CX4/36H,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6816CX4/36H,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6816CX4/36H,315?
LD6816CX4/36H,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6816CX4/36H,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 LD6816CX4/36H,315?
For technical support, including LD6816CX4/36H,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6816CX4/36H,315 requirements.
6.How does Aetrix verify that LD6816CX4/36H,315 is sourced from the original manufacturer or authorized distributors?
All LD6816CX4/36H,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 LD6816CX4/36H,315 meets industry standards.
7.What is the process for return or replacement of LD6816CX4/36H,315?
All LD6816CX4/36H,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6816CX4/36H,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 LD6816CX4/36H,315 part is unused and in its original packaging.
Return procedure for LD6816CX4/36H,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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