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NXP Semiconductors LD6805K/23H,115
- Part No.:
- LD6805K/23H,115
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
LD6805K/23H,115.pdf
- Description:
- IC REG LIN 2.3V 150MA DFN1010C-4
- Quantity:
- Payment:
- Shipping:
Inventory:50,000
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Product details
Overview
LD6805K/23H,115 from NXP Semiconductors is a 2.3 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 high-ohmic (3-state) output during disable. It operates from 2.3 V to 5.5 V input and targets noise-sensitive analog/digital interfaces in space-constrained portable electronics.
For engineers reviewing the LD6805K/23H,115 datasheet, LD6805K/23H,115 pinout, LD6805K/23H,115 application, or LD6805K/23H,115 equivalent, this page delivers verified specifications, thermal performance data, enable timing behavior, output stability requirements, and validated alternative LDOs for mobile power rail design.
Technical Context
The LD6805K/23H,115 integrates a precision voltage reference, error amplifier, and PMOS pass transistor in monolithic silicon. Its high-ohmic disable mode isolates the output without sinking current, preserving downstream bias conditions in multi-rail systems.
PSRR of −75 dB at 1 kHz and 40 µV RMS output noise (10 Hz–100 kHz) stem from internal compensation and low-noise bandgap design. Thermal resistance is 250 K/W (junction-to-ambient, typical), requiring PCB copper area under the exposed TAB for optimal dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.3 V ±2% over −40 °C to +85 °C ambient; ensures stable core logic supply for 2.3 V I/O domains. |
| Dropout Voltage | 250 mV at 150 mA load; enables regulation from 2.55 V input, supporting single-cell Li-ion or boosted 2.4 V rails. |
| PSRR | 75 dB at 1 kHz; suppresses switching noise from adjacent DC-DC converters feeding shared input sources. |
| Quiescent Current | 0.1 µA typical in shutdown (EN ≤ 0.4 V); minimizes battery drain in always-on standby circuits. |
| Startup Time | 150 µs to 95% of 2.3 V output (VIN = 5.5 V, CL = 1 µF); supports fast wake-up sequences in mobile SoC power management. |
| Output Noise | 40 µV RMS (10 Hz–100 kHz); meets low-noise requirements for RF front-end biasing and precision ADC references. |
| ESD Protection | ±6 kV HBM; withstands handling and board-level ESD events without external protection diodes. |
Pinout & Package
LD6805K/23H,115 uses the DFN1010C-4 (SOT1194-1) plastic package: 1 × 1 × 0.55 mm body with exposed thermal pad (TAB) on underside, rated for 250 K/W junction-to-ambient thermal resistance when connected to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output voltage node | Delivers stable 2.3 V to load; requires ≥0.7 µF X7R ceramic capacitor (1 µF recommended) for stability and controlled shutdown time. |
| 2 - GND | Supply ground reference | Primary return path for load current and internal circuitry; must be low-impedance connection to PCB ground plane. |
| 3 - EN | Enable control input (active HIGH) | Drives regulator ON when ≥1.1 V applied; disables output to high-ohmic state when ≤0.4 V applied. |
| 4 - IN | Input voltage supply | Accepts 2.3–5.5 V; requires local 1 µF ceramic decoupling capacitor near pin to reduce input impedance at high frequencies. |
| TAB | Thermal pad / internal GND | Exposed copper pad on bottom surface; must be soldered to PCB ground pour to achieve specified thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-high PSRR | 75 dB at 1 kHz enables clean power delivery in mixed-signal SoC subsystems sharing noisy switcher inputs. |
| High-ohmic disable | Output floats to high-impedance state when disabled-preserves downstream voltage levels and avoids unintended discharge paths. |
| Low-noise regulation | 40 µV RMS output noise supports RF transceiver biasing and high-resolution sensor signal chains without added filtering. |
| Miniaturized footprint | 1 × 1 mm DFN package reduces PCB area by >60% vs. SOT-23 alternatives, critical for ultra-thin mobile device layouts. |
| Pb-free & halogen-free | RoHS-compliant, dark green material set meets global environmental compliance mandates without compromising thermal or electrical performance. |
Applications
| Smartphone Baseband Power | Digital Camera Sensor Bias |
|---|---|
Use Scenario: Supplies 2.3 V to baseband processor I/O banks in LTE smartphones where input rail shares noise with PMIC switchers. IC Role / Device Role / Timing Role: Low-noise post-regulator providing isolated, ripple-free 2.3 V domain for high-speed serial interfaces (e.g., MIPI D-PHY). Use Value: 75 dB PSRR prevents switching artifacts from corrupting timing margins in 1.5 Gbps differential signaling lanes. |
Use Scenario: Powers CMOS image sensor analog front-end in compact digital still cameras with tight thermal budgets. IC Role / Device Role / Timing Role: Precision LDO delivering stable 2.3 V to pixel array bias and column ADC reference rails. Use Value: 40 µV RMS noise ensures <1 LSB error in 12-bit image digitization under varying illumination conditions. |
| Portable Media Player Audio Codec | Personal Navigation Device GPS Front-End |
Use Scenario: Generates clean 2.3 V supply for stereo audio DAC and headphone amplifier in battery-powered media players. IC Role / Device Role / Timing Role: Low-quiescent, low-noise regulator maintaining SNR >105 dB in audio playback path. Use Value: 0.1 µA shutdown current extends battery life during pause modes without sacrificing startup latency (<150 µs). |
Use Scenario: Provides regulated 2.3 V to GPS RF receiver LNA and downconverter in handheld navigation units. IC Role / Device Role / Timing Role: High-PSRR LDO rejecting noise from MCU and display drivers sharing same battery source. Use Value: 250 mV dropout allows operation down to 2.55 V input-extending usable battery range from 3.0 V to 2.6 V cell voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0523PDBVR | 2.3 V fixed, 200 mA, 170 mV dropout at 200 mA; 65 dB PSRR at 1 kHz; SOT-23-5 package (2.9 × 1.6 mm). | Larger footprint and lower PSRR limit use in ultra-low-noise RF sections; higher current rating suits higher-load peripherals. | Select when board layout permits larger package and load exceeds 150 mA, but PSRR >70 dB is not required. |
| MCP1700T-2302E/TT | 2.3 V fixed, 250 mA, 600 mV dropout at 250 mA; 55 dB PSRR at 1 kHz; SOT-23-3 package (2.9 × 1.3 mm). | Higher dropout and lower PSRR restrict operation to higher-input systems (≥2.9 V); no enable pin-always-on operation only. | Choose only for cost-sensitive, non-critical analog rails where enable control and ultra-low noise are unnecessary. |
Compared with TPS7A0523PDBVR and MCP1700T-2302E/TT, LD6805K/23H,115 delivers superior PSRR and lower dropout in a 60% smaller footprint-making it optimal for noise-sensitive, space-constrained mobile applications where precise 2.3 V regulation is mandatory.
Availability
LD6805K/23H,115 is available at Aetrix Electronics and suitable for smartphone baseband power, digital camera sensor bias, portable media player audio codecs, and personal navigation device GPS front-ends requiring stable component supply across high-volume production cycles.
Supply support for LD6805K/23H,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 mobile markets.
The LD6805 series belongs to NXP's ultra-miniature, high-PSRR LDO product line, engineered specifically for noise-critical power domains in battery-powered portable electronics where board space and EMI immunity are primary constraints.
FAQ
What is the maximum input voltage rating for LD6805K/23H,115?
The absolute maximum input voltage for LD6805K/23H,115 is +6.0 V for transient events up to 4 ms, per the datasheet limiting values table. Continuous operation must remain within the recommended 2.3 V to 5.5 V range to ensure reliability and specified performance. Exceeding 5.5 V during normal operation risks parametric shift or long-term degradation of the LD6805K/23H,115.
Does LD6805K/23H,115 require an external output capacitor, and what value is recommended?
Yes, LD6805K/23H,115 requires an external output capacitor for stability. The minimum value is 0.7 µF with ±30% tolerance; the recommended value is 1.0 µF using X7R dielectric to meet full temperature range (−40 °C to +125 °C). Using less than 0.7 µF may cause oscillation or poor transient response in the LD6805K/23H,115.
What is the thermal resistance (Rth(j-a)) of LD6805K/23H,115, and how can it be optimized?
The typical junction-to-ambient thermal resistance of LD6805K/23H,115 is 250 K/W under standard two-layer PCB conditions. To optimize thermal performance, the exposed TAB must be soldered to a solid PCB ground plane with multiple vias connecting to inner ground layers. Leaving the TAB unconnected degrades Rth(j-a) and limits safe operating current in the LD6805K/23H,115.
How does the high-ohmic disable mode of LD6805K/23H,115 behave electrically?
When the EN pin is driven ≤0.4 V, LD6805K/23H,115 places the OUT pin in a high-impedance (3-state) condition-neither sourcing nor sinking current. This isolates the output rail, preserving voltage on downstream capacitance and preventing back-powering of upstream circuits. Unlike auto-discharge variants (e.g., LD6805K/23P), the LD6805K/23H,115 does not include a pull-down transistor.
Is LD6805K/23H,115 RoHS compliant and halogen-free?
Yes, LD6805K/23H,115 is Pb-free, RoHS compliant, and fully halogen-free and antimony-free-meeting "dark green" compliance standards. This is confirmed in Section 1.2 of the datasheet and applies to the DFN1010C-4 (SOT1194-1) package used for LD6805K/23H,115.
LD6805K/23H,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):
- 2.3V
- 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/23H,115 FAQ
1.How can I place an order for LD6805K/23H,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6805K/23H,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/23H,115 reliable?
The price and inventory of LD6805K/23H,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/23H,115 is usually 5 days.
3.What payment methods are accepted for LD6805K/23H,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6805K/23H,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6805K/23H,115?
LD6805K/23H,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6805K/23H,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/23H,115?
For technical support, including LD6805K/23H,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6805K/23H,115 requirements.
6.How does Aetrix verify that LD6805K/23H,115 is sourced from the original manufacturer or authorized distributors?
All LD6805K/23H,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/23H,115 meets industry standards.
7.What is the process for return or replacement of LD6805K/23H,115?
All LD6805K/23H,115 units undergo pre-shipment inspection (PSI). If there is an issue with LD6805K/23H,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/23H,115 part is unused and in its original packaging.
Return procedure for LD6805K/23H,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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