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NXP Semiconductors LD6806CX4/C36P,315
- Part No.:
- LD6806CX4/C36P,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6806CX4/C36P,315.pdf
- Description:
- IC REG LINEAR FIXED LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:27,000
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Product details
Overview
LD6806CX4/C36P,315 from NXP Semiconductors is a 3.6 V, 200 mA ultra-low-dropout linear regulator in a 0.76 mm × 0.76 mm WLCSP4 package with 0.4 mm pitch, featuring 60 mV dropout at full load, 30 µVRMS output noise (10 Hz–100 kHz), and active-HIGH enable with low-ohmic pull-down during disable. It targets space-constrained mobile power rails for baseband processors and RF transceivers.
For engineers reviewing the LD6806CX4/C36P,315 datasheet, LD6806CX4/C36P,315 pinout, LD6806CX4/C36P,315 application, or LD6806CX4/C36P,315 equivalent, key selection criteria include its 3.6 V fixed output, thermal shutdown (160 °C), ±0.5 % output voltage accuracy at +25 °C, 55 dB PSRR at 1 kHz, and compatibility with 1 µF X7R ceramic output capacitors.
Technical Context
The LD6806CX4/C36P,315 implements a PMOS pass transistor architecture enabling ultra-low dropout and fast 200 µs startup. Its internal bandgap reference and error amplifier maintain regulation across −40 °C to +85 °C ambient, while integrated thermal protection and current limiting ensure robust operation under fault conditions.
Unlike high-ohmic variants (e.g., LD6806CX4/C36H), this P-suffix device integrates a dedicated pull-down transistor on the OUT pin, delivering ≤100 Ω resistance when disabled-critical for preventing floating nodes in multi-rail systems where sequencing or leakage-sensitive loads are present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.6 V ±0.5 % at +25 °C; ±3 % over −40 °C to +85 °C - ensures stable supply for 3.3 V I/O interfaces with margin. |
| Dropout Voltage | 60 mV typical at 200 mA - enables operation from 3.66 V input, minimizing power loss in battery-powered systems. |
| Quiescent Current | 70 µA typical at no load; 0.1 µA in shutdown - extends battery life in always-on standby modes. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz) - supports noise-sensitive analog circuits like ADC references or RF synthesizers. |
| PSRR | 55 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Enable Threshold | VIH = 1.4 V min; VIL = 0.4 V max - compatible with 1.8 V and 3.3 V logic-level microcontrollers. |
| Thermal Shutdown | 160 °C with 20 K hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
LD6806CX4/C36P,315 uses a wafer-level chip-scale package (WLCSP4) measuring 0.76 mm × 0.76 mm × 0.47 mm with 0.4 mm bump pitch and backside coating. The package has four solder bumps arranged in a 2×2 grid, with no exposed pad or thermal slug.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Supply ground | Primary return path for load current and internal bias; must connect to solid ground plane for noise and thermal performance. |
| EN | Enable input (active HIGH) | Drives internal pass transistor; requires ≥1.4 V to enable; pulls OUT low via internal switch when <0.4 V. |
| OUT | Regulated output | Delivers 3.6 V to load; includes low-ohmic pull-down (≤100 Ω) when EN is LOW to prevent floating states. |
| IN | Input supply | Accepts 2.3 V to 5.5 V; requires local 1 µF X7R ceramic capacitor within 2 mm of the pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 60 mV at 200 mA enables use with Li-ion batteries down to 3.66 V, maximizing usable capacity. |
| Low-noise regulation | 30 µVRMS noise supports precision analog blocks without requiring additional filtering stages. |
| Fast startup | 200 µs turn-on time allows rapid power-up of subsystems in wake-from-sleep sequences. |
| Integrated pull-down | 100 Ω active discharge on OUT during disable prevents unintended biasing of downstream CMOS inputs. |
| ESD robustness | 10 kV HBM rating eliminates need for external ESD protection diodes in handheld designs. |
Applications
| Mobile Baseband Power | RF Transceiver Bias |
|---|---|
Use Scenario: Supplying core voltage to 2G/3G/4G baseband processors in smartphones where board area is constrained and battery voltage varies from 4.2 V to 3.4 V. IC Role / Device Role / Timing Role: Primary low-noise, low-dropout post-regulator delivering stable 3.6 V to processor I/O banks. Use Value: Enables direct regulation from single-cell Li-ion without intermediate buck conversion, reducing BOM count and PCB area by 30 % vs. discrete solutions. | Use Scenario: Providing clean 3.6 V bias to RF power amplifiers and mixer stages in cellular front-end modules. IC Role / Device Role / Timing Role: Low-noise LDO isolating sensitive RF circuitry from noisy digital supply domains. Use Value: 55 dB PSRR at 1 kHz suppresses switching artifacts from adjacent DC-DC converters, improving EVM by >2 dB in LTE transmission. |
| Wearable Sensor Hub | Bluetooth LE SoC Core Rail |
Use Scenario: Powering MEMS accelerometer/gyroscope sensor hubs in compact wearables where thermal dissipation is limited. IC Role / Device Role / Timing Role: Always-on LDO supplying 3.6 V to sensor interface ASIC with ultra-low quiescent current. Use Value: 0.1 µA shutdown current extends coin-cell battery life to >1 year in motion-triggered wake-up applications. | Use Scenario: Delivering regulated 3.6 V to Bluetooth Low Energy SoCs during active advertising and connection intervals. IC Role / Device Role / Timing Role: Fast-starting LDO enabling sub-200 µs power-up of radio peripherals after deep sleep. Use Value: 200 µs startup time reduces system wake latency, allowing BLE connections to establish within 1.5 ms of host interrupt. |
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 output, 150 mA rating, 120 mV dropout at 150 mA, SOT-25 package (2.9 mm × 2.8 mm) | Larger footprint and lower current capability limit use in high-density mobile PCBs. | Select when cost sensitivity outweighs size constraints and peak load remains ≤150 mA. |
| Richtek RT9013-36GB | 3.6 V fixed output, 300 mA rating, 250 mV dropout at 300 mA, SOT-23-5 package (2.9 mm × 1.6 mm) | Higher dropout and larger package increase power loss and board area vs. LD6806CX4/C36P,315. | Choose only if higher output current headroom is required and thermal budget permits higher dissipation. |
Compared with XC6219B362MR-G and RT9013-36GB, LD6806CX4/C36P,315 delivers superior miniaturization (0.58 mm² vs. ≥8.1 mm²), lowest dropout (60 mV), and integrated pull-down-making it optimal for next-gen compact, battery-efficient mobile designs where space and sequencing integrity are critical.
Availability
LD6806CX4/C36P,315 is available at Aetrix Electronics and suitable for mobile handset power management, wearable sensor hubs, and Bluetooth LE SoC core rails requiring stable component supply with guaranteed long-term availability.
Supply support for LD6806CX4/C36P,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 ultra-compact, low-noise power delivery in portable electronics, emphasizing minimal footprint, fast transient response, and robust protection features for battery-powered applications.
FAQ
What is the nominal output voltage and tolerance of LD6806CX4/C36P,315?
The LD6806CX4/C36P,315 provides a fixed 3.6 V output with ±0.5 % initial accuracy at +25 °C and ±3 % variation across −40 °C to +85 °C ambient temperature. This tight tolerance ensures reliable operation of 3.3 V I/O interfaces without external trimming, and the specification is verified per NXP's Product Data Sheet Rev. 3.
Does LD6806CX4/C36P,315 require an external output capacitor, and what type is recommended?
Yes, LD6806CX4/C36P,315 requires a minimum 1.0 µF X7R ceramic capacitor at the OUT pin for stability, with ESR between 5 mΩ and 500 mΩ. NXP specifies X7R dielectric due to its stable capacitance over −40 °C to +125 °C, ensuring consistent regulation across full operating temperature range.
How does the enable function operate on LD6806CX4/C36P,315, and what happens to the output when disabled?
LD6806CX4/C36P,315 uses an active-HIGH enable: the device turns on when EN ≥ 1.4 V and shuts down when EN ≤ 0.4 V. When disabled, its integrated pull-down transistor actively discharges the OUT pin to GND with ≤100 Ω resistance-preventing floating outputs that could cause undefined logic states in downstream CMOS circuits.
What is the thermal shutdown behavior of LD6806CX4/C36P,315, and how does it recover?
LD6806CX4/C36P,315 triggers thermal shutdown at 160 °C junction temperature and remains off until junction temperature drops by 20 K (to ≤140 °C), at which point it automatically resumes regulation. This hysteresis prevents oscillation near the trip point and is implemented in silicon-no external components needed.
Can LD6806CX4/C36P,315 be used with input voltages below 2.3 V?
No-LD6806CX4/C36P,315 has a specified minimum input voltage of 2.3 V per its Recommended Operating Conditions. Operation below this level may result in loss of regulation, increased dropout, or unpredictable enable/disable behavior, as confirmed in Table 8 of the NXP datasheet.
LD6806CX4/C36P,315 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- LD6806
- Package/Case:
- 4-XFBGA, WLCSP
- Packaging:
- Bulk
- Product Status:
- Active
- 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):
- 0.1V @ 200mA
- Current - Output:
- 200mA
- 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-WLCSP (0.76x0.76)
LD6806CX4/C36P,315 FAQ
1.How can I place an order for LD6806CX4/C36P,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6806CX4/C36P,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 LD6806CX4/C36P,315 reliable?
The price and inventory of LD6806CX4/C36P,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6806CX4/C36P,315 is usually 5 days.
3.What payment methods are accepted for LD6806CX4/C36P,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6806CX4/C36P,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6806CX4/C36P,315?
LD6806CX4/C36P,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6806CX4/C36P,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 LD6806CX4/C36P,315?
For technical support, including LD6806CX4/C36P,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6806CX4/C36P,315 requirements.
6.How does Aetrix verify that LD6806CX4/C36P,315 is sourced from the original manufacturer or authorized distributors?
All LD6806CX4/C36P,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 LD6806CX4/C36P,315 meets industry standards.
7.What is the process for return or replacement of LD6806CX4/C36P,315?
All LD6806CX4/C36P,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6806CX4/C36P,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 LD6806CX4/C36P,315 part is unused and in its original packaging.
Return procedure for LD6806CX4/C36P,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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