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NXP Semiconductors LD6836CX4/27P,315
- Part No.:
- LD6836CX4/27P,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6836CX4/27P,315.pdf
- Description:
- IC REG LINEAR 2.7V 300MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:27,000
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Product details
Overview
LD6836CX4/27P,315 from NXP Semiconductors is a 2.7 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 targets power-sensitive portable applications including smartphone baseband ICs and camera sensor rails.
For engineers reviewing the LD6836CX4/27P,315 datasheet, LD6836CX4/27P,315 pinout, LD6836CX4/27P,315 application, or LD6836CX4/27P,315 equivalent, key selection criteria include its 2.7 V output accuracy (±2% over temperature), 150 µs startup time, 55 dB PSRR at 1 kHz, low-quiescent-current shutdown mode (0.1 µA typ), and WLCSP4 thermal resistance of 130 K/W.
Technical Context
The LD6836CX4/27P,315 implements a PMOS pass transistor architecture enabling ultra-low dropout operation down to 90 mV at 300 mA, with internal voltage reference and error amplifier delivering tight output regulation across −40 °C to +85 °C ambient. Its enable input (active HIGH, VIH ≥ 1.1 V) controls both regulation and the integrated pull-down switch for rapid output discharge.
Designed for high-noise-immunity analog subsystems, it achieves 55 dB power supply rejection at 1 kHz and maintains 30 µVRMS broadband noise performance with only 1 µF ceramic output capacitance. Over-temperature shutdown (160 °C) and current limiting (600 mA short-circuit) provide robust protection without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 2.7 V ±2% over −40 °C to +85 °C; enables direct replacement of 2.7 V logic/sensor rails without feedback resistor network. |
| Dropout voltage | 90 mV typical at 300 mA; allows operation from 2.79 V input, maximizing battery runtime in single-cell Li-ion or Li-poly systems. |
| PSRR | 55 dB at 1 kHz; suppresses switching noise from adjacent DC-DC converters feeding noisy system rails. |
| Output noise | 30 µVRMS (10 Hz–100 kHz); meets low-noise analog supply requirements for ADCs, RF front-ends, and precision sensors. |
| Quiescent current | 0.1 µA typical in shutdown; reduces leakage current in always-on subsystems such as real-time clocks or wake-on-event circuits. |
| Startup time | 150 µs to 95% of 2.7 V; supports fast power sequencing in multi-rail mobile SoC platforms. |
| Pull-down resistance | 100 Ω typical; discharges output to 5% of 2.7 V within 300 µs, preventing floating states during sleep mode transitions. |
Pinout & Package
LD6836CX4/27P,315 uses a 4-bump Wafer-Level Chip-Scale Package (WLCSP4) with 0.4 mm pitch and footprint 0.76 mm × 0.76 mm. Solder bumps face downward; bump A1 serves as index marker.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Supply ground | Primary return path for load current and internal bias; must connect to low-impedance PCB ground plane for noise and thermal performance. |
| EN | Enable input (active HIGH) | Logic-level control pin; drives internal regulator and pull-down switch; VIH ≥ 1.1 V ensures compatibility with 1.8 V/2.8 V I/O domains. |
| OUT | Regulated output voltage | 2.7 V source for downstream circuitry; requires ≥0.7 µF X7R ceramic capacitor with ESR 5–500 mΩ for stability. |
| IN | Regulator input voltage | Accepts 2.3 V–5.5 V input; minimum headroom 90 mV enables use with buck converter outputs or partially discharged batteries. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Integrated 100 Ω pull-down transistor actively discharges OUT to GND when EN = LOW, eliminating need for external bleed resistors in battery-powered sleep modes. |
| Ultra-low noise output | 30 µVRMS noise over 10 Hz–100 kHz enables clean power delivery to noise-sensitive analog blocks without additional filtering. |
| High PSRR at 1 kHz | 55 dB rejection of ripple from upstream switching regulators ensures stable 2.7 V rail even under dynamic load conditions. |
| Thermal protection | 160 °C junction shutdown with 20 K hysteresis prevents permanent damage during sustained overload or poor PCB thermal design. |
| ESD robustness | 10 kV HBM rating allows safe handling and assembly in standard electronics manufacturing environments without special ESD precautions. |
Applications
| Smartphone Baseband Power | Digital Camera Sensor Rail |
|---|---|
Use Scenario: Powers baseband processor core or memory interface in compact smartphones where board space and thermal dissipation are constrained. IC Role / Device Role / Timing Role: Primary 2.7 V LDO supplying critical digital logic with fast transient response and minimal voltage droop during burst-mode processing. Use Value: 90 mV dropout extends usable battery voltage range by ~120 mV versus conventional LDOs, directly increasing talk time. | Use Scenario: Supplies image sensor analog front-end requiring ultra-low noise and precise 2.7 V bias in mobile phone cameras. IC Role / Device Role / Timing Role: Low-noise, fixed-output regulator decoupling switching noise from DC-DC converters powering digital portions of the same module. Use Value: 30 µVRMS noise prevents fixed-pattern noise and SNR degradation in high-resolution CMOS sensors. |
| Portable Media Player Audio Codec | GPS Receiver Front-End |
Use Scenario: Provides clean 2.7 V supply to stereo audio DAC and headphone amplifier in battery-operated media players. IC Role / Device Role / Timing Role: Low-ESR, low-noise LDO isolating sensitive audio circuitry from noisy system rails and digital switching transients. Use Value: 55 dB PSRR at 1 kHz suppresses audible switching artifacts from system PMIC, improving THD+N performance. | Use Scenario: Powers GPS RF front-end LNA and downconverter in personal navigation devices with aggressive size constraints. IC Role / Device Role / Timing Role: Miniaturized WLCSP4 regulator delivering stable 2.7 V under varying input conditions from single-cell Li-ion battery. Use Value: 0.76 mm × 0.76 mm footprint saves >60% board area versus SOT23-5 alternatives, enabling smaller form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B272MR-G | 2.7 V fixed output, 300 mA, SOT-25 package; 120 mV dropout (vs. 90 mV); no auto-discharge function. | Lacks integrated pull-down; requires external resistor for output discharge in sleep mode. | Select when board space permits SOT-25 and auto-discharge is not required. |
| Richtek RT9193-27GB | 2.7 V fixed output, 300 mA, SOT-23-5 package; 250 mV dropout (vs. 90 mV); 50 µVRMS noise (vs. 30 µV). | Higher dropout and noise limit use in ultra-low-power or high-precision analog applications. | Select when cost sensitivity outweighs performance requirements and WLCSP4 miniaturization is unnecessary. |
Compared with XC6219B272MR-G and RT9193-27GB, LD6836CX4/27P,315 delivers superior dropout performance and integrated auto-discharge in the smallest footprint-critical for next-generation portable designs where every micron of PCB area and millivolt of headroom matters.
Availability
LD6836CX4/27P,315 is available at Aetrix Electronics and suitable for smartphone baseband power, digital camera sensor rails, portable media player audio codecs, and GPS receiver front-ends requiring stable component supply with guaranteed long-term availability.
Supply support for LD6836CX4/27P,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 LD6836 series belongs to NXP's ultra-low-noise, miniaturized LDO portfolio, engineered specifically for space-constrained portable electronics demanding high efficiency, low EMI, and rapid power-state transitions.
FAQ
What is the nominal output voltage of the LD6836CX4/27P,315?
The LD6836CX4/27P,315 provides a fixed 2.7 V output voltage with ±2% tolerance over −40 °C to +85 °C ambient temperature and full 300 mA load range. This value is laser-marked on the WLCSP4 die as "P" per NXP's marking convention for 2.7 V pull-down variants, and is confirmed in Table 5 of the official datasheet.
Does the LD6836CX4/27P,315 include an auto-discharge function?
Yes, the LD6836CX4/27P,315 integrates a pull-down transistor that provides low-ohmic output state when disabled (EN = LOW), enabling automatic discharge of the output capacitor. Its typical pull-down resistance is 100 Ω, achieving 95% discharge within 300 µs-eliminating need for external bleed resistors in battery-powered sleep modes.
What package type and dimensions does the LD6836CX4/27P,315 use?
The LD6836CX4/27P,315 uses a 4-bump Wafer-Level Chip-Scale Package (WLCSP4) with 0.4 mm pitch. Its physical dimensions are 0.76 mm × 0.76 mm × 0.47 mm (typical), with solder bumps facing downward and bump A1 serving as the index marker-verified in Figure 23 and Table 19 of the NXP datasheet.
What is the maximum input voltage rating for the LD6836CX4/27P,315?
The LD6836CX4/27P,315 supports an absolute maximum input voltage of +6.0 V for transient events up to 4 ms, with recommended operating range of 2.3 V to 5.5 V. Exceeding 6.0 V risks permanent damage, while operation below 2.3 V may prevent regulation due to insufficient headroom above the 2.7 V output.
How does the LD6836CX4/27P,315 achieve low output noise performance?
The LD6836CX4/27P,315 achieves 30 µVRMS output noise (10 Hz–100 kHz) through optimized internal bandgap reference and error amplifier design, combined with low-noise PMOS pass transistor topology. Performance is measured with 1 µF X7R ceramic output capacitor and requires adherence to ESR limits (5–500 mΩ) per Table 13 of the datasheet.
LD6836CX4/27P,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):
- 2.7V
- 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)
LD6836CX4/27P,315 FAQ
1.How can I place an order for LD6836CX4/27P,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836CX4/27P,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 LD6836CX4/27P,315 reliable?
The price and inventory of LD6836CX4/27P,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6836CX4/27P,315 is usually 5 days.
3.What payment methods are accepted for LD6836CX4/27P,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836CX4/27P,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836CX4/27P,315?
LD6836CX4/27P,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836CX4/27P,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 LD6836CX4/27P,315?
For technical support, including LD6836CX4/27P,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836CX4/27P,315 requirements.
6.How does Aetrix verify that LD6836CX4/27P,315 is sourced from the original manufacturer or authorized distributors?
All LD6836CX4/27P,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 LD6836CX4/27P,315 meets industry standards.
7.What is the process for return or replacement of LD6836CX4/27P,315?
All LD6836CX4/27P,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836CX4/27P,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 LD6836CX4/27P,315 part is unused and in its original packaging.
Return procedure for LD6836CX4/27P,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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