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NXP Semiconductors LD6836CX4/14P,315
- Part No.:
- LD6836CX4/14P,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6836CX4/14P,315.pdf
- Description:
- IC REG LINEAR 1.4V 300MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:18,000
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Product details
Overview
LD6836CX4/14P,315 from NXP Semiconductors is a 1.4 V fixed-output, 300 mA ultra-low-dropout linear regulator in a 0.4 mm pitch WLCSP4 package (0.76 × 0.76 × 0.47 mm), featuring 90 mV dropout at full load, 30 µVRMS output noise (10 Hz–100 kHz), and auto-discharge functionality via integrated pull-down transistor. It powers core logic rails in space-constrained portable devices such as smartphone application processors and camera sensor interfaces.
For engineers reviewing the LD6836CX4/14P,315 datasheet, LD6836CX4/14P,315 pinout, LD6836CX4/14P,315 application, or LD6836CX4/14P,315 equivalent, key selection criteria include its 1.4 V output accuracy (±0.5% at +25°C), 55 dB PSRR at 1 kHz, 150 µs startup time, and compatibility with 0.7–1.0 µF X7R output capacitors for stable operation in high-density mobile PCB layouts.
Technical Context
The LD6836CX4/14P,315 implements a PMOS pass transistor architecture enabling ultra-low dropout voltage and high PSRR without external compensation. Its enable input (active HIGH) controls both regulation and the integrated 100 Ω pull-down switch that actively discharges the output during disable, eliminating residual voltage hold-up in battery-powered systems.
Designed for low-noise analog and digital supply domains, it integrates over-temperature shutdown (160°C trigger, 20 K hysteresis) and current limiting (600 mA short-circuit protection), with thermal resistance of 130 K/W (junction-to-ambient, typical) on a two-layer PCB - critical for thermal management in thin-profile handheld enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.4 V ±0.5% at +25°C; supports precision core logic and I/O rail requirements without external feedback. |
| Dropout voltage | 90 mV typical at 300 mA; enables efficient operation down to VIN = 1.49 V, extending battery runtime in single-cell Li-ion systems. |
| PSRR | 55 dB at 1 kHz; suppresses switching noise from upstream DC-DC converters feeding noisy power domains. |
| Output noise | 30 µVRMS (10 Hz–100 kHz); meets low-noise analog circuit requirements for image sensors and ADC references. |
| Quiescent current | 0.1 µA typical in shutdown mode; minimizes leakage current in always-on subsystems like real-time clocks. |
| Startup time | 150 µs to 95% of 1.4 V; ensures fast power sequencing for application processors requiring rapid wake-up from deep sleep. |
| Pull-down resistance | 100 Ω typical; guarantees rapid output discharge (<300 µs to 5% VOUT) for safe state transitions in multi-rail power systems. |
Pinout & Package
LD6836CX4/14P,315 uses a 4-bump Wafer-Level Chip-Scale Package (WLCSP4) with 0.4 mm pitch and footprint 0.76 mm × 0.76 mm. Bumps are arranged in a 2×2 grid; bump A1 is index corner (marked).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Supply ground | Primary reference node; must be connected to low-impedance ground plane for noise immunity and thermal dissipation. |
| EN | Enable input (active HIGH) | Logic-level control pin; drives internal regulator and pull-down switch; VIH ≥1.1 V, VIL ≤0.4 V. |
| OUT | Regulator output voltage | 1.4 V regulated output; requires 0.7–1.0 µF X7R ceramic capacitor with ESR 5–500 mΩ for stability. |
| IN | Regulator input voltage | Input supply range 2.3–5.5 V; accepts battery, DC-DC output, or USB-derived rails. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Integrated 100 Ω pull-down transistor actively discharges OUT during disable, preventing floating or latch-up in downstream circuits. |
| Low-noise regulation | 30 µVRMS output noise enables clean power for noise-sensitive analog blocks like RF front-ends and precision ADCs. |
| High PSRR at low frequency | 55 dB rejection at 1 kHz mitigates ripple from buck converter switching frequencies and their harmonics. |
| Ultra-small footprint | 0.76 mm × 0.76 mm WLCSP4 package reduces board area by >70% vs. SOT23-5, supporting miniaturized mobile designs. |
| Robust protection suite | Includes over-temperature shutdown (160°C), current limiting (600 mA), and 10 kV HBM ESD rating for reliable field operation. |
Applications
| Smartphone Application Processor Core Rail | Digital Camera Sensor Power |
|---|---|
Use Scenario: Powers CPU/GPU cores in modern smartphones where tight voltage tolerance and fast transient response are mandatory. IC Role / Device Role / Timing Role: Primary LDO delivering stable 1.4 V to processor cores during dynamic DVFS transitions. Use Value: 90 mV dropout enables operation from partially discharged batteries; 150 µs startup supports sub-millisecond wake-up latency. | Use Scenario: Supplies image sensor analog and digital I/O rails in compact camera modules with strict EMI and noise budgets. IC Role / Device Role / Timing Role: Low-noise, low-ripple power source decoupling sensor pixel arrays and ADC front-ends. Use Value: 30 µVRMS noise prevents fixed-pattern noise in captured images; 55 dB PSRR rejects switching noise from nearby PMICs. |
| Portable Media Player Audio Codec Supply | Bluetooth SoC I/O Voltage Translation |
Use Scenario: Provides clean 1.4 V bias to audio DACs and headphone amplifiers in battery-powered media players. IC Role / Device Role / Timing Role: Dedicated low-noise LDO isolating sensitive audio circuitry from noisy system rails. Use Value: Ultra-low output noise preserves SNR in high-fidelity playback; auto-discharge prevents pop/click during power cycling. | Use Scenario: Generates 1.4 V I/O supply for Bluetooth SoCs interfacing with 1.8 V or 3.3 V host processors. IC Role / Device Role / Timing Role: Level-shifting LDO ensuring compatible logic thresholds between mixed-voltage peripherals. Use Value: Tight output accuracy (±0.5%) maintains signal integrity across voltage domains; small WLCSP4 footprint saves space in antenna-proximate layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LD6836CX4/14H | Same WLCSP4 package and 1.4 V output, but high-ohmic (3-state) output when disabled - no auto-discharge. | Suitable for systems where output floating during disable is acceptable or preferred for isolation. | Select LD6836CX4/14H only if active discharge is unnecessary and lower standby leakage is prioritized. |
| Torex XC6210B142MR-G | 1.4 V, 300 mA LDO in 0.65 mm × 0.65 mm USP-4 package; 120 mV dropout, 45 dB PSRR at 1 kHz, no integrated pull-down. | Requires external discharge circuitry; higher dropout limits usable input range in low-VIN applications. | Choose XC6210B142MR-G only if WLCSP4 footprint is not required and higher dropout is acceptable. |
Compared with LD6836CX4/14H and XC6210B142MR-G, the LD6836CX4/14P,315 uniquely combines ultra-low dropout, integrated auto-discharge, and industry-leading noise performance in the smallest available footprint - making it optimal for next-generation portable electronics demanding minimal board area and maximum power integrity.
Availability
LD6836CX4/14P,315 is available at Aetrix Electronics and suitable for smartphone application processors, digital camera sensors, portable media player audio codecs, and Bluetooth SoC I/O voltage translation requiring stable component supply with guaranteed long-term availability.
Supply support for LD6836CX4/14P,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 applications, with leadership in power management and RF technologies.
The LD6836 series belongs to NXP's ultra-low-noise, ultra-low-dropout LDO product line, engineered specifically for space-constrained, battery-powered portable electronics requiring high accuracy, fast transient response, and integrated safety features.
FAQ
What is the nominal output voltage and tolerance of the LD6836CX4/14P,315?
The LD6836CX4/14P,315 delivers a fixed 1.4 V output with ±0.5% tolerance at +25°C and ±4% over the full operating temperature range (−40°C to +85°C). This accuracy is specified under 1 mA load and ensures reliable operation for precision logic and interface circuits without external trimming.
Does the LD6836CX4/14P,315 require an external output capacitor, and what are the specifications?
Yes, the LD6836CX4/14P,315 requires an external output capacitor of 0.7–1.0 µF X7R ceramic type with ESR between 5 mΩ and 500 mΩ. This capacitor is mandatory for stability and directly affects shutdown time; deviation from these values may cause oscillation or degraded transient response.
How does the auto-discharge function work in the LD6836CX4/14P,315?
The LD6836CX4/14P,315 integrates a 100 Ω pull-down transistor between OUT and GND, activated when EN is driven LOW. This discharges the output capacitance to 5% of nominal voltage within 300 µs (typical), preventing residual voltage that could cause unintended behavior in downstream logic or analog circuits.
What is the thermal resistance and maximum power dissipation of the LD6836CX4/14P,315?
The LD6836CX4/14P,315 has a typical junction-to-ambient thermal resistance (Rth(j-a)) of 130 K/W on a two-layer PCB. Its absolute maximum power dissipation is 770 mW, corresponding to a maximum junction temperature of +125°C under recommended operating conditions.
Is the LD6836CX4/14P,315 RoHS-compliant and halogen-free?
Yes, the LD6836CX4/14P,315 is fully RoHS-compliant, lead-free, and free of halogen and antimony - meeting NXP's "dark green" environmental standard. It is qualified per NX1-00023 for consumer applications and supports lead-free reflow soldering profiles.
LD6836CX4/14P,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):
- 1.4V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.16V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 250 µA
- PSRR:
- 55dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-WLCSP (0.76x0.76)
LD6836CX4/14P,315 FAQ
1.How can I place an order for LD6836CX4/14P,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836CX4/14P,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 LD6836CX4/14P,315 reliable?
The price and inventory of LD6836CX4/14P,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6836CX4/14P,315 is usually 5 days.
3.What payment methods are accepted for LD6836CX4/14P,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836CX4/14P,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836CX4/14P,315?
LD6836CX4/14P,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836CX4/14P,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 LD6836CX4/14P,315?
For technical support, including LD6836CX4/14P,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836CX4/14P,315 requirements.
6.How does Aetrix verify that LD6836CX4/14P,315 is sourced from the original manufacturer or authorized distributors?
All LD6836CX4/14P,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 LD6836CX4/14P,315 meets industry standards.
7.What is the process for return or replacement of LD6836CX4/14P,315?
All LD6836CX4/14P,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836CX4/14P,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 LD6836CX4/14P,315 part is unused and in its original packaging.
Return procedure for LD6836CX4/14P,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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