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NXP Semiconductors LD6806CX4/25H,315
- Part No.:
- LD6806CX4/25H,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6806CX4/25H,315.pdf
- Description:
- IC REG LINEAR 2.5V 200MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,613
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Product details
Overview
LD6806CX4/25H from NXP Semiconductors is a 2.5 V, 200 mA ultra-low-dropout linear regulator in WLCSP4 package with 60 mV dropout at full load, 30 µVRMS output noise (10 Hz–100 kHz), and active-high enable pin. It delivers stable low-noise power for RF and analog circuitry in space-constrained mobile devices.
For engineers reviewing the LD6806CX4/25H datasheet, LD6806CX4/25H pinout, LD6806CX4/25H application, or LD6806CX4/25H equivalent, key selection criteria include its high-ohmic (3-state) output during disable, thermal shutdown at 160 °C, ±0.5 % output voltage accuracy at +25 °C, and compatibility with 1 µF X7R ceramic output capacitors.
Technical Context
The LD6806CX4/25H uses a monolithic silicon LDO architecture with internal reference generator, current limiter, and thermal protection circuitry. Its high-ohmic output state when disabled prevents backfeeding and supports rail isolation in multi-rail systems.
It operates across −40 °C to +85 °C ambient temperature with input voltage range 2.3 V to 5.5 V and maintains regulation down to 60 mV headroom at 200 mA. PSRR is −55 dB at 1 kHz, and start-up time is 200 µs to 95 % of nominal output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 2.5 V ±0.5 % at +25 °C; ±3 % over −30 °C to +85 °C - ensures stable core supply for 2.5 V logic and analog blocks |
| Dropout voltage | 60 mV typical at 200 mA - enables operation from 2.56 V input, minimizing power loss in battery-powered systems |
| Quiescent current | 70 µA typical at IOUT = 0 mA; 0.1 µA in shutdown - extends battery life in always-on subsystems |
| Output noise | 30 µVRMS (10 Hz–100 kHz) - meets low-noise requirements for ADC references and RF bias rails |
| 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 GPIO control without level shifting |
| Thermal shutdown | 160 °C junction temperature with 20 K hysteresis - protects against sustained overload or poor PCB thermal design |
Pinout & Package
LD6806CX4/25H is housed in a wafer-level chip-scale package (WLCSP4) measuring 0.76 mm × 0.76 mm × 0.47 mm with 0.4 mm pitch and four solder bumps. The package is Pb-free, RoHS-compliant, and halogen-free.
| 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 thermal and noise performance |
| EN | Enable input (active HIGH) | Controls regulator operation; drives high (>1.4 V) to enable, low (<0.4 V) to place output in high-ohmic (3-state) mode |
| OUT | Regulated output voltage | Delivers 2.5 V to load; requires ≥1.0 µF X7R ceramic capacitor with ESR 5–500 mΩ for stability |
| IN | Supply voltage input | Accepts 2.3–5.5 V input; benefits from local 1 µF decoupling capacitor near the pin |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 60 mV at 200 mA enables use with single-cell Li-ion (2.7–4.2 V) or partially discharged batteries |
| Low-noise regulation | 30 µVRMS noise supports precision analog circuits without external filtering |
| Fast start-up | 200 µs to 95 % of 2.5 V allows rapid power sequencing in wake-up events |
| High-ohmic disable | Output enters 3-state mode when EN is low - prevents back-conduction and enables rail multiplexing |
| Integrated ESD protection | 10 kV HBM rating eliminates need for external TVS on EN and OUT pins in handheld designs |
Applications
| Mobile RF Front-End Bias | Digital Baseband Core Supply |
|---|---|
Use Scenario: Powering low-noise amplifiers (LNAs) and mixer bias networks in 4G/5G handset transceivers. IC Role / Device Role / Timing Role: Provides clean, stable 2.5 V bias with minimal ripple-induced phase noise. Use Value: 30 µVRMS noise and −55 dB PSRR directly improve receiver sensitivity and adjacent channel rejection. | Use Scenario: Supplying 2.5 V core voltage to application processors or modem baseband ICs during low-power retention states. IC Role / Device Role / Timing Role: Delivers regulated voltage with fast 200 µs turn-on to meet processor wake-up timing budgets. Use Value: 70 µA quiescent current and high-ohmic disable minimize leakage during deep-sleep modes. |
| Portable Audio Codec Reference | IoT Sensor Hub Power Rail |
Use Scenario: Generating reference voltage for stereo audio ADC/DAC in Bluetooth earbuds and wearables. IC Role / Device Role / Timing Role: Supplies low-noise 2.5 V to precision audio converters requiring tight DC accuracy and low broadband noise. Use Value: ±0.5 % output tolerance at +25 °C and 30 µVRMS noise ensure THD+N remains below audible thresholds. | Use Scenario: Powering MEMS accelerometers, environmental sensors, and BLE radio in compact IoT nodes. IC Role / Device Role / Timing Role: Regulates battery voltage to fixed 2.5 V while supporting dynamic load steps up to 200 mA. Use Value: 60 mV dropout and integrated thermal/current protection ensure reliable operation under varying sensor activity loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B251MR-G | 2.5 V fixed output, 150 mA, SOT-25 package, 120 mV dropout at 150 mA | Larger footprint and higher dropout limit usable input range; no thermal shutdown hysteresis | Choose for cost-sensitive, non-thermal-critical applications where WLCSP size is not required |
| Richtek RT9013-25GB | 2.5 V fixed output, 300 mA, SOT-23-5 package, 250 mV dropout at 300 mA, 45 µVRMS noise | Higher noise and larger package; includes active-low enable and soft-start | Choose when higher output current or active-low control interface is needed, accepting trade-offs in noise and size |
Compared with XC6219B251MR-G and RT9013-25GB, LD6806CX4/25H offers the smallest footprint (0.76 mm²), lowest dropout (60 mV), and lowest noise (30 µVRMS)-making it optimal for miniaturized, battery-powered RF and precision analog systems where thermal margin and power efficiency are critical.
Availability
LD6806CX4/25H is available at Aetrix Electronics and suitable for mobile phone handsets, cordless telephones, and personal digital devices requiring stable component supply, long-term lifecycle support, and consistent wafer-level packaging.
Supply support for LD6806CX4/25H 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 LD6806 series belongs to NXP's ultra-low-noise, miniature LDO portfolio designed specifically for space-constrained portable electronics demanding high PSRR, fast transient response, and robust thermal protection.
FAQ
What is the output voltage tolerance of LD6806CX4/25H over temperature?
The LD6806CX4/25H has ±0.5 % output voltage tolerance at +25 °C and ±3 % over the full operating ambient temperature range of −30 °C to +85 °C. This specification ensures predictable performance for 2.5 V logic and analog interfaces without requiring post-regulation trimming. The LD6806CX4/25H achieves this via laser-trimmed internal resistor ratios and stable bandgap reference design.
Does LD6806CX4/25H require an external output capacitor, and what type is recommended?
Yes, LD6806CX4/25H requires a minimum 1.0 µF external ceramic output capacitor for stability, with X7R dielectric recommended to maintain capacitance across −40 °C to +125 °C. The capacitor must have ESR between 5 mΩ and 500 mΩ. Using less than 0.7 µF risks oscillation or poor transient response. The LD6806CX4/25H datasheet specifies these values based on measured loop stability across process corners.
How does the high-ohmic output state of LD6806CX4/25H function during disable?
When the EN pin of LD6806CX4/25H is driven LOW (<0.4 V), the output enters a high-ohmic (3-state) condition - effectively disconnecting the pass transistor from both IN and OUT. This prevents backfeeding into the LDO from downstream circuits and enables safe rail isolation in multi-supply systems. Unlike P-type pass devices with pull-down transistors, LD6806CX4/25H exhibits true open-circuit behavior at OUT during disable.
What is the maximum allowable input voltage for LD6806CX4/25H, and what protection exists against overvoltage?
The absolute maximum input voltage for LD6806CX4/25H is +6.0 V for 4 ms transients, with recommended operating range 2.3 V to 5.5 V. It includes no internal overvoltage protection beyond this rating; system-level protection (e.g., TVS diode or series fuse) is required if input may exceed 6.0 V. The LD6806CX4/25H relies on external design for overvoltage safety - its internal circuitry is rated only to withstand brief transients within the Absolute Maximum Ratings table.
Can LD6806CX4/25H be used with a 1.8 V enable signal from a microcontroller GPIO?
Yes, LD6806CX4/25H is fully compatible with 1.8 V GPIO enable signals: its VIH (HIGH-level input voltage) minimum is 1.4 V, and VIL (LOW-level input voltage) maximum is 0.4 V. A 1.8 V logic HIGH exceeds the 1.4 V threshold with 0.4 V noise margin, ensuring reliable activation. No level-shifter is needed. This interface compatibility is confirmed in Table 10 of the LD6806CX4/25H datasheet under "Electrical Characteristics".
LD6806CX4/25H,315 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 4-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- 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)
LD6806CX4/25H,315 FAQ
1.How can I place an order for LD6806CX4/25H,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6806CX4/25H,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 LD6806CX4/25H,315 reliable?
The price and inventory of LD6806CX4/25H,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6806CX4/25H,315 is usually 5 days.
3.What payment methods are accepted for LD6806CX4/25H,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6806CX4/25H,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6806CX4/25H,315?
LD6806CX4/25H,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6806CX4/25H,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 LD6806CX4/25H,315?
For technical support, including LD6806CX4/25H,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6806CX4/25H,315 requirements.
6.How does Aetrix verify that LD6806CX4/25H,315 is sourced from the original manufacturer or authorized distributors?
All LD6806CX4/25H,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 LD6806CX4/25H,315 meets industry standards.
7.What is the process for return or replacement of LD6806CX4/25H,315?
All LD6806CX4/25H,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6806CX4/25H,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 LD6806CX4/25H,315 part is unused and in its original packaging.
Return procedure for LD6806CX4/25H,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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