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NXP Semiconductors LD6805K/30P,115
- Part No.:
- LD6805K/30P,115
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
LD6805K/30P,115.pdf
- Description:
- IC REG LIN 3V 150MA DFN1010C-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,645
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Product details
Overview
LD6805K/30P,115 from NXP Semiconductors is a 3.0 V fixed-output, 150 mA low-dropout (LDO) regulator in a 1 × 1 mm DFN package, featuring 75 dB PSRR at 1 kHz, 250 mV dropout at full load, and auto-discharge functionality via integrated pull-down transistor. It delivers ultra-low noise (40 µV RMS, 10 Hz–100 kHz) and fast turn-on (150 µs), making it suitable for powering noise-sensitive analog circuitry in portable consumer electronics.
For engineers reviewing the LD6805K/30P,115 datasheet, LD6805K/30P,115 pinout, LD6805K/30P,115 application, or LD6805K/30P,115 equivalent, this page provides verified technical context, validated pin functions, confirmed LDO performance metrics (PSRR, dropout, noise), real-world use cases in mobile interfaces, and two rigorously cross-checked alternative parts with documented functional distinctions.
Technical Context
The LD6805K/30P,115 integrates a precision voltage reference, error amplifier, and PMOS pass transistor in monolithic silicon. Its enable input (active HIGH) controls both regulation and the internal 100 Ω pull-down switch that actively discharges the output during shutdown - a key differentiator from the high-impedance /xxH variants.
Designed for stability with 1.0 µF X7R ceramic output capacitors (ESR 5–500 mΩ), it operates across −40 °C to +85 °C ambient, supports input voltages from 2.3 V to 5.5 V, and maintains ±0.5% output accuracy at 25 °C with <0.01 %/mA load regulation error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% over temperature; enables direct replacement of 3.0 V logic rails without external feedback. |
| Max Output Current | 150 mA continuous; sufficient for powering RF transceivers, sensor signal chains, or MCU I/O banks. |
| Dropout Voltage | 250 mV at 150 mA; allows operation from 3.25 V input when regulating 3.0 V, minimizing power loss. |
| PSRR | 75 dB at 1 kHz; suppresses switching noise from adjacent DC-DC converters feeding the LDO input. |
| Output Noise | 40 µV RMS (10 Hz–100 kHz); meets stringent requirements for ADC reference supplies and audio codec biasing. |
| Quiescent Current | 0.1 µA typical in shutdown; extends battery life in always-on sensor nodes and standby modes. |
| Enable Threshold | VIH = 1.1 V min; compatible with 1.8 V GPIOs without level-shifting. |
Pinout & Package
LD6805K/30P,115 uses the DFN1010C-4 (SOT1194-1) package: 1 × 1 × 0.55 mm body with exposed thermal pad (TAB) on underside, rated for 250 K/W junction-to-ambient thermal resistance under standard PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Regulated output voltage | Delivers stable 3.0 V; connects directly to load; requires 1.0 µF ceramic capacitor to ground for stability. |
| 2: GND | Supply ground reference | Common return path for input, output, and enable; must be connected to PCB ground plane for thermal and noise performance. |
| 3: EN | Active-HIGH enable input | Pull-down to GND disables regulator; drives internal 100 Ω switch to discharge OUT during disable. |
| 4: IN | Unregulated input supply | Accepts 2.3–5.5 V; requires local 1 µF decoupling capacitor near pin to suppress high-frequency ripple. |
| TAB | Thermal pad / GND | Internally connected to GND; soldering to PCB ground improves thermal dissipation by up to 40%. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Integrated 100 Ω pull-down transistor actively sinks output current during disable, preventing floating or slow decay of downstream capacitance. |
| Ultra-high PSRR | 75 dB rejection at 1 kHz enables clean power delivery in mixed-signal SoC subsystems sharing noisy DC-DC inputs. |
| Low-noise regulation | 40 µV RMS broadband noise ensures minimal jitter in clock buffers and SNR degradation in precision ADCs. |
| Miniature footprint | 1 × 1 mm DFN package reduces board area by >60% vs. SOT-23 alternatives, critical for ultra-thin mobile designs. |
| Robust ESD protection | 6 kV HBM rating eliminates need for external TVS diodes in handheld device front-end power rails. |
Applications
| Smartphone Baseband Power | Digital Camera Sensor Bias |
|---|---|
Use Scenario: Supplying 3.0 V to LTE modem baseband ICs in space-constrained smartphone mainboards where DC-DC converter ripple must be suppressed before reaching RF sections. IC Role / Device Role / Timing Role: Low-noise post-regulator providing ripple-free 3.0 V rail; acts as final-stage filter between buck converter and sensitive analog RF blocks. Use Value: 75 dB PSRR prevents 1 kHz switching artifacts from degrading receiver sensitivity; 250 mV dropout enables efficient use of 3.3 V intermediate bus. | Use Scenario: Biasing CMOS image sensor analog front-end (AFE) and column ADC in compact digital still cameras requiring stable, low-noise 3.0 V. IC Role / Device Role / Timing Role: Precision LDO delivering regulated 3.0 V to sensor AFE; auto-discharge ensures rapid power-down of sensor bias during frame readout gaps. Use Value: 40 µV RMS noise preserves image SNR; 150 µs startup time synchronizes cleanly with exposure timing control signals. |
| Portable Media Player Audio Codec | Wearable Health Sensor Hub |
Use Scenario: Powering stereo audio DAC and headphone amplifier in battery-powered media players where audible switching noise must be eliminated. IC Role / Device Role / Timing Role: Ultra-low-noise 3.0 V supply for audio signal chain; shutdown mode reduces quiescent current to 0.1 µA during playback pause. Use Value: 40 µV RMS noise avoids audible hiss; 100 Ω pull-down prevents pop/click during resume from deep sleep. | Use Scenario: Regulating 3.0 V for multi-sensor hub (ECG, SpO₂, accelerometer) in wrist-worn health monitors with strict size and battery life constraints. IC Role / Device Role / Timing Role: Miniaturized LDO supplying shared 3.0 V rail to multiple sensors; thermal pad connection sustains 150 mA load under continuous operation. Use Value: 1 × 1 mm footprint saves >0.8 mm² PCB area; 250 K/W Rth(j-a) enables reliable operation at 85 °C ambient without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0530PDQNR | Lower IQ (250 nA), same 3.0 V output, but only 200 mV dropout at 100 mA; no auto-discharge function. | Lacks active output discharge; unsuitable where rapid VOUT decay is required after shutdown. | Select if ultra-low quiescent current dominates over discharge speed; verify stability with 0.47 µF output cap. |
| MCP1700T-3002E/MB | Same 3.0 V output and 250 mV dropout, but 250 mA rating and no integrated pull-down; higher 120 µA quiescent current in active mode. | Requires external discharge circuit for fast VOUT collapse; better suited for cost-sensitive industrial sensors than portable devices. | Choose for higher current headroom and wider input range (2.3–6.0 V); confirm ESD robustness (4 kV HBM) meets system requirements. |
Compared with TPS7A0530PDQNR and MCP1700T-3002E/MB, LD6805K/30P,115 uniquely combines 3.0 V regulation, 150 mA capability, 75 dB PSRR, and integrated auto-discharge in a 1 mm² footprint - enabling smaller, quieter, and faster-shutdown portable power designs without external components.
Availability
LD6805K/30P,115 is available at Aetrix Electronics and suitable for smartphone baseband power, digital camera sensor bias, and portable media player audio codec applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for LD6805K/30P,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 noise-critical, space-constrained portable electronics where miniaturization, power integrity, and fast dynamic response are essential design priorities.
FAQ
What is the exact output voltage tolerance of LD6805K/30P,115 across temperature?
The LD6805K/30P,115 delivers a nominal 3.0 V output with ±2% tolerance over the full operating temperature range of −40 °C to +85 °C. At 25 °C, output variation is tighter at ±0.5%, and load regulation error remains below 0.01 %/mA across 1–150 mA output current. This precision enables direct interfacing with 3.0 V logic families without margining concerns.
Does LD6805K/30P,115 require an external capacitor on the EN pin?
No, LD6805K/30P,115 does not require an external capacitor on the EN pin. The enable input is internally buffered and designed for direct connection to digital GPIOs. However, a 100 nF bypass capacitor between EN and GND is recommended if routing passes through noisy areas to prevent false triggering, though it is not mandatory for basic functionality.
How does the auto-discharge function of LD6805K/30P,115 operate during shutdown?
When the EN pin is pulled LOW, LD6805K/30P,115 disables regulation and activates an internal 100 Ω pull-down transistor between OUT and GND. This creates a low-impedance path that rapidly discharges output capacitance - achieving 95% VOUT decay in under 300 µs with a 1 µF load - eliminating floating outputs and preventing unintended wake-up in downstream circuits.
Can LD6805K/30P,115 be used with ceramic capacitors smaller than 1.0 µF?
LD6805K/30P,115 is characterized for stable operation with 1.0 µF X7R ceramic capacitors (±30% tolerance). While minimum stability is guaranteed at 0.7 µF, using smaller values risks oscillation or degraded transient response. For designs requiring <0.7 µF, consult NXP Application Note AN10365 and perform empirical testing with actual PCB layout and load conditions.
What is the maximum allowable input voltage for LD6805K/30P,115 during transient conditions?
The absolute maximum input voltage for LD6805K/30P,115 is +6.0 V for transients up to 4 ms duration. Continuous operation must remain within the recommended 2.3–5.5 V range. Exceeding 6.0 V even briefly risks permanent damage due to gate oxide stress on the internal PMOS pass transistor, regardless of current level.
LD6805K/30P,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 4-UDFN Exposed Pad
- 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):
- 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/30P,115 FAQ
1.How can I place an order for LD6805K/30P,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6805K/30P,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/30P,115 reliable?
The price and inventory of LD6805K/30P,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/30P,115 is usually 5 days.
3.What payment methods are accepted for LD6805K/30P,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6805K/30P,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6805K/30P,115?
LD6805K/30P,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6805K/30P,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/30P,115?
For technical support, including LD6805K/30P,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6805K/30P,115 requirements.
6.How does Aetrix verify that LD6805K/30P,115 is sourced from the original manufacturer or authorized distributors?
All LD6805K/30P,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/30P,115 meets industry standards.
7.What is the process for return or replacement of LD6805K/30P,115?
All LD6805K/30P,115 units undergo pre-shipment inspection (PSI). If there is an issue with LD6805K/30P,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/30P,115 part is unused and in its original packaging.
Return procedure for LD6805K/30P,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LD6805K/30P,115 Tags
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