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NXP Semiconductors LD6806CX4/33P,315
- Part No.:
- LD6806CX4/33P,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6806CX4/33P,315.pdf
- Description:
- IC REG LINEAR 3.3V 200MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
LD6806CX4/33P,315 from NXP Semiconductors is a 3.3 V, 200 mA ultra-low-dropout linear regulator in a 0.76 mm × 0.76 mm WLCSP4 package with 60 mV dropout at full load, 30 µV RMS output noise (10 Hz–100 kHz), and active-HIGH enable pin. It features low-ohmic pull-down during disable, thermal shutdown, overcurrent protection, and is optimized for space-constrained mobile power rails.
For engineers reviewing the LD6806CX4/33P,315 datasheet, LD6806CX4/33P,315 pinout, LD6806CX4/33P,315 application, or LD6806CX4/33P,315 equivalent, key selection criteria include its 3.3 V fixed output, 60 mV dropout at 200 mA, 30 µV RMS noise, 200 µs startup time, and WLCSP4 footprint compatibility with high-density PCB layouts in portable electronics.
Technical Context
The LD6806CX4/33P,315 implements a PMOS pass transistor architecture enabling ultra-low dropout voltage and stable operation with only 1 µF output capacitance. Its internal reference generator, error amplifier, and thermal/current protection circuitry are monolithically integrated in silicon to ensure precision regulation across −40 °C to +85 °C ambient.
Unlike high-ohmic variants (e.g., LD6806CX4/33H), this P-suffix device integrates a dedicated pull-down transistor on the OUT pin, ensuring rapid discharge to ground (<300 µs) when disabled-critical for sequencing-sensitive subsystems like RF transceivers or memory I/O rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% over −40 °C to +85 °C; supports stable core/peripheral rail in mobile SoC designs. |
| Dropout Voltage | 60 mV typical at 200 mA; enables operation down to VIN = 3.36 V, maximizing battery runtime in Li-ion-powered devices. |
| Noise (RMS) | 30 µV over 10 Hz–100 kHz; suitable for noise-sensitive analog circuits (e.g., ADC references, RF LNA bias). |
| Startup Time | 200 µs to 95% of 3.3 V; meets fast wake-up requirements in low-power microcontroller sleep modes. |
| PSRR | 55 dB at 1 kHz; suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Quiescent Current | 70–100 µA under load; <1.0 µA in shutdown; minimizes standby power in always-on sensor nodes. |
| Enable Threshold | VIH = 1.4 V min, VIL = 0.4 V max; compatible with 1.8 V/3.3 V GPIO without level-shifting. |
Pinout & Package
LD6806CX4/33P,315 uses a 4-bump Wafer-Level Chip-Scale Package (WLCSP4), 0.76 mm × 0.76 mm × 0.47 mm, with 0.4 mm pitch and Pb-free, RoHS-compliant construction.
| 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; logic HIGH ≥1.4 V enables regulation; LOW ≤0.4 V disables with pull-down active. |
| OUT (B1) | Regulated output voltage | Delivers 3.3 V to load; includes integrated pull-down switch to discharge external capacitance during disable. |
| IN (B2) | Input supply voltage | Accepts 2.3 V–5.5 V; requires local 1 µF ceramic capacitor near pin for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 60 mV at 200 mA enables >98% efficiency at 3.3 V output from 3.6 V Li-ion battery. |
| Low-noise regulation | 30 µV RMS noise supports clean power for RF front-ends and precision analog signal chains. |
| Fast enable/disable control | 200 µs startup and <300 µs shutdown allow precise power sequencing in multi-rail systems. |
| Integrated pull-down | 100 Ω typical Rpd ensures rapid output discharge-eliminates need for external bleeder resistors. |
| Robust protection | Thermal shutdown (160 °C), overcurrent limiting, and 10 kV HBM ESD rating enhance system reliability. |
Applications
| Mobile Phone Baseband Power | Wireless Headset Audio Bias |
|---|---|
Use Scenario: Powers baseband processor I/O banks requiring tightly regulated 3.3 V with minimal voltage headroom from shared battery rail. IC Role / Device Role / Timing Role: Primary low-noise post-regulator delivering stable 3.3 V to digital interface circuitry with fast enable for modem sleep/wake cycles. Use Value: 60 mV dropout extends usable battery range by ~150 mV; 30 µV noise prevents digital crosstalk into sensitive RF receivers. | Use Scenario: Supplies clean 3.3 V bias to MEMS microphone preamplifiers and Bluetooth audio codec analog sections. IC Role / Device Role / Timing Role: Low-noise LDO providing isolated analog rail; pull-down feature discharges coupling capacitors during headset power-off. Use Value: 55 dB PSRR rejects switching noise from adjacent DC-DC converters; 200 µs startup synchronizes with Bluetooth link establishment. |
| Portable Media Player Display Interface | Smart Wearable Sensor Hub |
Use Scenario: Regulates 3.3 V for OLED display data drivers and touch controller I²C bus, where ripple causes visible artifacts. IC Role / Device Role / Timing Role: Dedicated display power rail LDO with fast transient response to handle burst pixel refresh currents. Use Value: 1 µF output capacitor suffices for stability-reducing BOM count and board area in ultra-thin form factors. | Use Scenario: Powers ultra-low-power environmental sensors (accelerometer, temperature) and BLE radio during intermittent wake cycles. IC Role / Device Role / Timing Role: Always-on LDO with <1 µA shutdown current; enables long battery life in coin-cell-powered wearables. Use Value: Thermal watchdog prevents overheating in sealed enclosures; WLCSP4 footprint fits sub-10 mm² PCB real estate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B332MR-G | 3.3 V fixed, 200 mA, 150 mV dropout (typ), SOT-25 package (2.9 mm × 2.8 mm) | Larger footprint; no integrated pull-down; higher dropout reduces battery efficiency | Choose for through-hole prototyping or legacy SMT lines not supporting WLCSP reflow. |
| Richtek RT9013-33GB | 3.3 V fixed, 300 mA, 250 mV dropout (typ), DFN-6 (2.0 mm × 2.0 mm), 60 µV noise | Higher noise and dropout; larger package; lacks thermal shutdown hysteresis | Choose when higher output current margin is required and board space permits larger DFN. |
Compared with XC6219B332MR-G and RT9013-33GB, LD6806CX4/33P,315 delivers superior efficiency via 60 mV dropout, smaller WLCSP4 footprint, and guaranteed pull-down functionality-making it optimal for miniaturized, battery-sensitive designs where fast discharge and low noise are critical.
Availability
LD6806CX4/33P,315 is available at Aetrix Electronics and suitable for mobile handset power management, wireless audio subsystems, portable display interfaces, and wearable sensor hubs requiring stable component supply with tight lead-time control.
Supply support for LD6806CX4/33P,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.
The LD6806 series was designed specifically for ultra-miniaturized, low-noise power regulation in battery-powered portable electronics-emphasizing minimal dropout, fast transient response, and robust protection in wafer-level packaging.
FAQ
What is the nominal output voltage and tolerance of the LD6806CX4/33P,315?
The LD6806CX4/33P,315 provides a fixed 3.3 V output with ±2% tolerance over −40 °C to +85 °C ambient temperature and 1 mA to 200 mA load current, as specified in Table 10 of the NXP datasheet Rev. 3. This accuracy ensures reliable operation of 3.3 V I/O standards without external feedback components.
Does the LD6806CX4/33P,315 require an external output capacitor, and what value is recommended?
Yes, the LD6806CX4/33P,315 requires a minimum 1.0 µF X7R ceramic capacitor at the OUT pin for stability, per Section 10.1 and Table 11. The capacitor must have ESR between 5 mΩ and 500 mΩ. Using 1 µF ensures proper transient response and meets the 200 µs startup specification defined for LD6806CX4/33P,315.
How does the pull-down function operate on the LD6806CX4/33P,315 during disable?
When the EN pin is driven LOW (≤0.4 V), the LD6806CX4/33P,315 activates an internal NMOS pull-down transistor on the OUT pin, achieving a typical resistance of 100 Ω. This discharges external capacitance to ground within <300 µs (tsd(reg)), eliminating floating outputs and enabling safe power sequencing in multi-rail systems.
What is the maximum input voltage and thermal limit for continuous operation of the LD6806CX4/33P,315?
The LD6806CX4/33P,315 supports input voltages up to +6.0 V for transient conditions (4 ms), but continuous operation is limited to 2.3 V–5.5 V per Table 8. Its junction temperature must remain ≤+125 °C, with thermal shutdown activating at +160 °C (Tsd) and hysteresis of 20 K, ensuring robust operation in compact handheld enclosures.
Is the LD6806CX4/33P,315 compatible with lead-free reflow soldering processes?
Yes, the LD6806CX4/33P,315 is Pb-free and RoHS compliant, qualified for lead-free reflow per J-STD-020C. Its WLCSP4 package (thickness <1.6 mm, volume <350 mm³) requires a peak reflow temperature of 260 °C, consistent with standard Class 3 IPC guidelines for portable electronics assembly.
LD6806CX4/33P,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):
- 3.3V
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-WLCSP (0.76x0.76)
LD6806CX4/33P,315 FAQ
1.How can I place an order for LD6806CX4/33P,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6806CX4/33P,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 LD6806CX4/33P,315 reliable?
The price and inventory of LD6806CX4/33P,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6806CX4/33P,315 is usually 5 days.
3.What payment methods are accepted for LD6806CX4/33P,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6806CX4/33P,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6806CX4/33P,315?
LD6806CX4/33P,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6806CX4/33P,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 LD6806CX4/33P,315?
For technical support, including LD6806CX4/33P,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6806CX4/33P,315 requirements.
6.How does Aetrix verify that LD6806CX4/33P,315 is sourced from the original manufacturer or authorized distributors?
All LD6806CX4/33P,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 LD6806CX4/33P,315 meets industry standards.
7.What is the process for return or replacement of LD6806CX4/33P,315?
All LD6806CX4/33P,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6806CX4/33P,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 LD6806CX4/33P,315 part is unused and in its original packaging.
Return procedure for LD6806CX4/33P,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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