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NXP Semiconductors LD6806CX4/28P,315
- Part No.:
- LD6806CX4/28P,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6806CX4/28P,315.pdf
- Description:
- IC REG LINEAR 2.8V 200MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
LD6806CX4/28P,315 from NXP Semiconductors is a 2.8 V, 200 mA ultra-low-dropout linear regulator in WLCSP4 package (0.76 mm × 0.76 mm), featuring 60 mV dropout at full load, 30 µVRMS output noise (10 Hz–100 kHz), and active-HIGH enable with 1.4 V logic threshold-designed for power-sensitive mobile handset baseband and RF subsystems.
For engineers reviewing the LD6806CX4/28P,315 datasheet, LD6806CX4/28P,315 pinout, LD6806CX4/28P,315 application, or LD6806CX4/28P,315 equivalent, key selection criteria include its low-noise regulation for analog sensor rails, fast 200 µs startup time, integrated thermal shutdown and current limiting, and pull-down output stage enabling clean power sequencing in battery-powered portable devices.
Technical Context
The LD6806CX4/28P,315 uses a PMOS pass transistor architecture to achieve ultra-low dropout voltage and high PSRR (−55 dB @ 1 kHz). Its internal reference generator and error amplifier maintain tight output regulation across −40 °C to +85 °C ambient, while the dedicated EN pin controls both regulation and output state-asserting a low-ohmic path to GND when disabled via integrated pull-down transistor.
Thermal protection activates at 160 °C junction temperature with 20 K hysteresis, and ESD robustness meets 10 kV HBM. The device requires only a 1.0 µF ceramic output capacitor (X7R, ESR 5–500 mΩ) for stability, with no input capacitor mandatory but recommended for transient suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 2.8 V ±2% over −40 °C to +85 °C; enables direct replacement of discrete LDOs in 2.8 V logic/sensor rails. |
| Dropout voltage | 60 mV typical at 200 mA; allows operation from 2.86 V input, maximizing battery runtime in single-cell Li-ion systems. |
| Noise (RMS) | 30 µV over 10 Hz–100 kHz; supports noise-sensitive analog circuits like ADC references and RF synthesizers. |
| PSRR | −55 dB at 1 kHz; suppresses switching noise from adjacent DC-DC converters feeding mixed-signal SoCs. |
| Startup time | 200 µs to 95% of 2.8 V; enables rapid power-up of peripherals during wake-from-sleep sequences. |
| Quiescent current | 70–100 µA active; drops to 0.1–1.0 µA in shutdown-critical for always-on sensor nodes. |
| Enable threshold | VIH = 1.4 V min; compatible with 1.8 V and 3.3 V GPIOs without level-shifting. |
Pinout & Package
LD6806CX4/28P,315 is housed in a 0.76 mm × 0.76 mm × 0.47 mm wafer-level chip-scale package (WLCSP4) with 0.4 mm pitch and four solder bumps. This ultra-compact, lead-free, RoHS-compliant package targets space-constrained mobile PCBs where board area is at premium.
| 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 control | Drives internal pass transistor; <1.4 V disables regulator and activates pull-down transistor to sink OUT. |
| OUT (B1) | Regulated output voltage | Delivers stable 2.8 V; connects directly to load; requires 1.0 µF X7R ceramic capacitor within 2 mm. |
| IN (B2) | Input supply voltage | Accepts 2.3–5.5 V; benefits from local 1 µF decoupling near bump for transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Low-ohmic output on disable | Integrated 100 Ω pull-down transistor actively discharges OUT to GND-eliminates floating rail during sleep mode. |
| Ultra-low noise regulation | 30 µVRMS output noise ensures minimal interference with precision analog front-ends and clock buffers. |
| Fast transient response | 200 µs startup and 300 µs shutdown times support dynamic power management in multi-core processors. |
| Robust thermal protection | 160 °C shutdown with 20 K hysteresis prevents latch-up during sustained overload or poor PCB thermal design. |
| High PSRR at audio band | −55 dB rejection at 1 kHz suppresses ripple from buck converters powering baseband ICs. |
Applications
| Mobile Baseband Power | RF Front-End Bias |
|---|---|
Use Scenario: Supplying core voltage to LTE/5G baseband processors requiring stable 2.8 V with minimal noise coupling into digital signal paths. IC Role / Device Role / Timing Role: Primary LDO delivering regulated 2.8 V to processor I/O banks and memory interfaces. Use Value: 60 mV dropout extends usable battery range by >15 minutes in single-cell Li-ion operation; 30 µV noise prevents bit errors in high-speed SerDes links. | Use Scenario: Biasing low-noise amplifiers (LNAs) and power amplifiers (PAs) in smartphone antenna modules. IC Role / Device Role / Timing Role: Clean, sequenced 2.8 V bias source synchronized with RF transceiver enable signals. Use Value: Active pull-down on disable prevents LNA oscillation during transmit/receive switching; PSRR rejects PA switching noise. |
| Portable Sensor Hub | Wearable Health Monitor |
Use Scenario: Powering MEMS accelerometers, gyroscopes, and environmental sensors in compact IoT edge nodes. IC Role / Device Role / Timing Role: Low-quiescent, enable-controlled regulator supplying 2.8 V to always-on sensor interface ASICs. Use Value: 0.1 µA shutdown current extends coin-cell battery life to >1 year; 200 µs startup enables responsive motion wake-up. | Use Scenario: Regulating power for optical heart-rate sensors (PPG) and bio-impedance measurement circuits in wrist-worn wearables. IC Role / Device Role / Timing Role: Ultra-low-noise 2.8 V source for analog front-end amplifiers and ADC drivers. Use Value: 30 µV RMS noise avoids baseline drift in PPG signal acquisition; 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 |
|---|---|---|---|
| TPS7A0528PDBVR | 200 mA, 2.8 V fixed, SOT-23-5; 170 mV dropout at 200 mA; 35 µVRMS noise; no integrated pull-down. | Lacks active discharge; requires external pulldown resistor for clean shutdown sequencing. | Select when board area allows SOT-23 and pull-down functionality is implemented externally. |
| MCP1703T-2802E/MB | 250 mA, 2.8 V fixed, SOT-23-5; 600 mV dropout at 250 mA; 40 µVRMS noise; no enable pin. | Higher dropout limits use in low-VIN systems; no enable/disable control reduces power management flexibility. | Select for cost-sensitive, non-sequenced applications where 2.8 V rail is always active. |
Compared with TPS7A0528PDBVR and MCP1703T-2802E/MB, LD6806CX4/28P,315 delivers superior dropout performance and integrated active discharge in a 0.76 mm² footprint-making it optimal for miniaturized, battery-powered systems demanding precise power sequencing and ultra-low noise.
Availability
LD6806CX4/28P,315 is available at Aetrix Electronics and suitable for mobile handset power management, wearable sensor biasing, RF front-end regulation, and portable medical device subsystems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for LD6806CX4/28P,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 RF, power management, and embedded security.
The LD6806 series was designed specifically for space-constrained, battery-operated portable electronics-delivering ultra-low-noise, low-dropout regulation with integrated power sequencing and thermal safety in wafer-level packaging.
FAQ
What is the nominal output voltage and tolerance of LD6806CX4/28P,315?
The LD6806CX4/28P,315 provides a fixed 2.8 V output with ±2% tolerance over −40 °C to +85 °C ambient temperature and 1 mA to 200 mA load current. This specification is guaranteed per Table 10 of the NXP datasheet Rev. 3, ensuring compatibility with 2.8 V logic families and analog sensor interfaces without external feedback components.
Does LD6806CX4/28P,315 include an active pull-down transistor on the output pin?
Yes, LD6806CX4/28P,315 incorporates an integrated low-ohmic pull-down transistor that activates when the EN pin is driven LOW. This feature forces the OUT pin to GND with ~100 Ω resistance, preventing floating outputs during system sleep-critical for reliable power sequencing in mobile platforms.
What is the minimum recommended output capacitor for stable operation of LD6806CX4/28P,315?
The LD6806CX4/28P,315 requires a minimum 1.0 µF X7R ceramic capacitor at the OUT pin, with ESR between 5 mΩ and 500 mΩ. The capacitor must be placed within 2 mm of the device bumps to ensure stability and optimal transient response, as specified in Section 10.1 of the NXP datasheet.
How does the thermal shutdown behavior work in LD6806CX4/28P,315?
LD6806CX4/28P,315 triggers thermal shutdown at 160 °C junction temperature and remains off until junction temperature falls by 20 K (to ~140 °C), providing hysteresis to prevent oscillation. This protection is fully integrated and requires no external components, safeguarding the device during overload or inadequate PCB heat sinking.
Is LD6806CX4/28P,315 compatible with lead-free reflow soldering processes?
Yes, LD6806CX4/28P,315 is lead-free and qualified for standard Pb-free reflow profiles per J-STD-020C. Its WLCSP4 package has a maximum peak temperature rating of 260 °C, and moisture sensitivity level (MSL) compliance is indicated on the original packaging-requiring bake-out if exposed beyond floor life.
LD6806CX4/28P,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):
- 2.8V
- 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)
LD6806CX4/28P,315 FAQ
1.How can I place an order for LD6806CX4/28P,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6806CX4/28P,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 LD6806CX4/28P,315 reliable?
The price and inventory of LD6806CX4/28P,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6806CX4/28P,315 is usually 5 days.
3.What payment methods are accepted for LD6806CX4/28P,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6806CX4/28P,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6806CX4/28P,315?
LD6806CX4/28P,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6806CX4/28P,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 LD6806CX4/28P,315?
For technical support, including LD6806CX4/28P,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6806CX4/28P,315 requirements.
6.How does Aetrix verify that LD6806CX4/28P,315 is sourced from the original manufacturer or authorized distributors?
All LD6806CX4/28P,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 LD6806CX4/28P,315 meets industry standards.
7.What is the process for return or replacement of LD6806CX4/28P,315?
All LD6806CX4/28P,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6806CX4/28P,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 LD6806CX4/28P,315 part is unused and in its original packaging.
Return procedure for LD6806CX4/28P,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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