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NXP Semiconductors LD6805K/30H,115
- Part No.:
- LD6805K/30H,115
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
LD6805K/30H,115.pdf
- Description:
- IC REG LIN 3V 150MA DFN1010C-4
- Quantity:
- Payment:
- Shipping:
Inventory:70,000
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Product details
Overview
LD6805K/30H,115 from NXP Semiconductors is a fixed 3.0 V, 150 mA ultra-low-noise LDO regulator with 75 dB PSRR at 1 kHz, 250 mV dropout at full load, and high-ohmic (3-state) output disable behavior - designed for power-sensitive analog/digital interfaces in portable consumer electronics.
For engineers reviewing the LD6805K/30H,115 datasheet, LD6805K/30H,115 pinout, LD6805K/30H,115 application, or LD6805K/30H,115 equivalent, this page delivers verified specifications, thermal performance data, enable timing, noise metrics, and real-world use context for compact battery-powered designs requiring stable low-voltage rails.
Technical Context
The LD6805K/30H,115 uses a monolithic silicon architecture with internal voltage reference, error amplifier, and PMOS pass transistor to deliver precise 3.0 V regulation across −40 °C to +85 °C ambient. Its high-ohmic disable mode isolates the output without sinking current, enabling clean power sequencing in multi-rail systems.
PSRR of −75 dB at 1 kHz and 40 µVRMS output noise (10 Hz–100 kHz) stem from optimized internal compensation and low-ESR capacitor compatibility (0.7–1.0 µF, 5–500 mΩ). Startup time is 150 µs with 1 µF output capacitance, supporting fast wake-up in always-on subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% over −40 °C to +85 °C; enables direct replacement of 3.0 V logic and RF bias supplies without external feedback. |
| Max Output Current | 150 mA continuous; supports moderate-power sensors, audio codecs, and MCU peripherals without thermal derating on standard 2-layer PCBs. |
| Dropout Voltage | 250 mV at 150 mA; allows operation from 3.25 V input (e.g., single Li-ion cell at end-of-discharge) while maintaining regulation. |
| PSRR | 75 dB at 1 kHz; suppresses switching noise from adjacent DC-DC converters feeding shared input rails. |
| Output Noise | 40 µVRMS (10 Hz–100 kHz); meets low-noise requirements for ADC references and RF front-end biasing. |
| Quiescent Current | 0.1 µA typical in shutdown (EN < 0.4 V); extends battery life in standby modes of portable devices. |
| Enable Threshold | VIH = 1.1 V min, VIL = 0.4 V max; compatible with 1.8 V and 3.3 V GPIOs without level-shifting. |
Pinout & Package
LD6805K/30H,115 is housed in a DFN1010C-4 (SOT1194-1) thermally enhanced plastic package measuring 1.0 × 1.0 × 0.55 mm, with exposed thermal pad (TAB) on underside connected internally to GND - recommended to be soldered to PCB ground plane for optimal thermal resistance (Rth(j-a) = 250 K/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output voltage | Delivers stable 3.0 V to load; high-ohmic state when disabled (no discharge path). |
| 2 - GND | Supply ground reference | Common return for input, output, and internal circuitry; connects to exposed TAB for thermal conduction. |
| 3 - EN | Active-HIGH enable input | Drives regulator ON when ≥1.1 V; disables output to high-impedance state when ≤0.4 V. |
| 4 - IN | Unregulated input supply | Accepts 2.3–5.5 V; requires local 1 µF ceramic capacitor for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-high PSRR | 75 dB at 1 kHz ensures robust immunity to ripple from switching regulators sharing the same battery source. |
| Low-output-noise regulation | 40 µVRMS noise floor enables clean power for precision analog circuits without additional filtering. |
| Fast startup | 150 µs turn-on time supports responsive power management in wake-from-sleep sequences. |
| High-ohmic disable | 3-state output prevents backfeeding or loading of downstream circuits during shutdown - critical for isolated domain control. |
| Robust ESD protection | 6 kV HBM rating protects against handling damage during assembly and field operation. |
Applications
| Smartphone Baseband Power | Digital Camera Sensor Bias |
|---|---|
Use Scenario: Supplies clean 3.0 V to baseband processor I/O banks and RF transceiver analog sections in space-constrained smartphone mainboards. IC Role / Device Role / Timing Role: Primary low-noise post-regulator converting switched 3.6–4.2 V battery voltage to stable 3.0 V rail with minimal board area. Use Value: PSRR >70 dB at 1–100 kHz prevents GSM/UMTS switching noise from modulating sensitive receive paths. |
Use Scenario: Powers CMOS image sensor analog front-end and ADC reference in compact digital still cameras. IC Role / Device Role / Timing Role: Low-noise LDO delivering regulated 3.0 V with fast enable/disable for sensor power gating between frames. Use Value: 40 µVRMS noise and 150 µs startup minimize image artifacts and frame latency during burst capture. |
| Portable Media Player Audio Codec | Personal Navigation Device GPS Front-End |
Use Scenario: Provides quiet 3.0 V supply to stereo audio DAC and headphone amplifier in battery-powered media players. IC Role / Device Role / Timing Role: Dedicated LDO decoupling audio signal chain from noisy system rails; enabled only during playback. Use Value: High-ohmic disable eliminates pop/click during playback start/stop and preserves battery during pause. |
Use Scenario: Powers GPS RF front-end LNA and downconverter ICs in handheld navigation units operating from single-cell Li-ion. IC Role / Device Role / Timing Role: Compact 3.0 V regulator sustaining GPS sensitivity under varying battery voltage (3.25–4.2 V). Use Value: 250 mV dropout enables full GPS functionality even at battery voltages as low as 3.25 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP114AMX300TBG | 3.0 V, 150 mA, 220 mV dropout, 70 dB PSRR @ 1 kHz, SOT-563 package (1.6 × 1.6 mm) | Larger footprint; lower PSRR reduces noise rejection in RF-dense layouts | Select when board space permits larger package and PSRR >75 dB is not required. |
| Torex XC6210B302MR-G | 3.0 V, 150 mA, 200 mV dropout, 65 dB PSRR @ 1 kHz, SOT-25 package (2.9 × 1.6 mm) | Higher quiescent current (1 µA vs. 0.1 µA); no high-ohmic disable - pulls output low when disabled | Choose for cost-sensitive designs where auto-discharge is acceptable and shutdown leakage is non-critical. |
Compared with NCP114AMX300TBG and XC6210B302MR-G, LD6805K/30H,115 offers superior PSRR and lower shutdown current in the smallest footprint (1.0 × 1.0 mm), making it optimal for ultra-compact, noise-sensitive portable applications where 3-state disable is required.
Availability
LD6805K/30H,115 is available at Aetrix Electronics and suitable for smartphone baseband power, digital camera sensor bias, portable media player audio codec supply, and personal navigation device GPS front-end applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LD6805K/30H,115 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 LD6805 series belongs to NXP's ultra-miniature, high-PSRR LDO product line, engineered specifically for space-constrained portable electronics demanding low noise, fast transient response, and minimal quiescent power in sub-1 mm² packages.
FAQ
What is the output voltage tolerance of LD6805K/30H,115 over temperature?
The LD6805K/30H,115 maintains output voltage within ±2% of 3.0 V across the full operating temperature range of −40 °C to +85 °C, as specified in Table 8 of the datasheet. This accuracy is achieved via laser-trimmed internal feedback resistors and a stable bandgap reference, ensuring reliable operation in consumer-grade portable environments without external calibration.
Does LD6805K/30H,115 require an external output capacitor, and what value is recommended?
Yes, LD6805K/30H,115 requires an external output capacitor for stability. The datasheet specifies a minimum of 0.7 µF and recommends 1.0 µF X7R ceramic with ESR between 5 mΩ and 500 mΩ. Using 1.0 µF ensures optimal transient response and meets the 150 µs startup time specification under 150 mA load.
How does the high-ohmic disable mode of LD6805K/30H,115 function in system-level power sequencing?
When LD6805K/30H,115 is disabled (EN < 0.4 V), its OUT pin enters a high-impedance (3-state) condition - neither sourcing nor sinking current. This prevents backfeeding into powered-down downstream circuits and avoids unintended discharge of hold-up capacitors, enabling clean, isolated domain shutdown in multi-rail architectures.
What is the thermal resistance (Rth(j-a)) of LD6805K/30H,115, and how can it be minimized?
The typical junction-to-ambient thermal resistance of LD6805K/30H,115 is 250 K/W under standard 2-layer PCB conditions. To minimize Rth(j-a), the exposed thermal pad (TAB) must be solidly connected to a large copper ground plane using multiple vias, and solder mask should be omitted beneath the package per Figure 9 in the datasheet.
Is LD6805K/30H,115 compatible with lead-free reflow soldering processes?
Yes, LD6805K/30H,115 is qualified for lead-free reflow per J-STD-020C. Its small DFN1010C-4 package falls under the "< 350 mm³ volume, < 1.6 mm thickness" category, requiring a peak reflow temperature of 260 °C. The device is Pb-free, RoHS compliant, and halogen-free per dark green compliance standards.
LD6805K/30H,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 4-UDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 35 µA
- Current - Supply (Max):
- 150 µA
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Transient Voltage
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1010C-4
LD6805K/30H,115 FAQ
1.How can I place an order for LD6805K/30H,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6805K/30H,115 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 LD6805K/30H,115 reliable?
The price and inventory of LD6805K/30H,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6805K/30H,115 is usually 5 days.
3.What payment methods are accepted for LD6805K/30H,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6805K/30H,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6805K/30H,115?
LD6805K/30H,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6805K/30H,115 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 LD6805K/30H,115?
For technical support, including LD6805K/30H,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6805K/30H,115 requirements.
6.How does Aetrix verify that LD6805K/30H,115 is sourced from the original manufacturer or authorized distributors?
All LD6805K/30H,115 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 LD6805K/30H,115 meets industry standards.
7.What is the process for return or replacement of LD6805K/30H,115?
All LD6805K/30H,115 units undergo pre-shipment inspection (PSI). If there is an issue with LD6805K/30H,115, 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 LD6805K/30H,115 part is unused and in its original packaging.
Return procedure for LD6805K/30H,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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