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NXP Semiconductors LD6806TD/14P,125
- Part No.:
- LD6806TD/14P,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6806TD/14P,125.pdf
- Description:
- IC REG LINEAR 1.4V 200MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,902
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Product details
Overview
LD6806TD/14P,125 from NXP Semiconductors is a 1.4 V, 200 mA ultra-low-dropout linear regulator in SOT753 (TSOP5) package, featuring 80 mV typical dropout at full load, 30 µV RMS output noise (10 Hz–100 kHz), and active-HIGH enable with 1.4 V VIH threshold. It delivers stable low-noise power for voltage-sensitive analog circuitry in space-constrained mobile interfaces.
For engineers reviewing the LD6806TD/14P,125 datasheet, LD6806TD/14P,125 pinout, LD6806TD/14P,125 application, or LD6806TD/14P,125 equivalent, key selection criteria include its low-noise performance, thermal shutdown hysteresis (20 K), pull-down output stage (Rpd = 100 Ω), PSRR of −55 dB at 1 kHz, and compatibility with 1.0 µF X7R ceramic output capacitors.
Technical Context
The LD6806TD/14P,125 implements a PMOS pass transistor architecture enabling ultra-low dropout and fast 200 µs startup time. Its internal reference generator feeds a precision error amplifier that regulates output against line (±0.1 %/V) and load (0.005 %/mA) variations across −40 °C to +85 °C ambient.
Thermal protection triggers at 160 °C junction temperature with 20 K hysteresis; overcurrent limiting caps peak output at 300 mA. The integrated 100 Ω pull-down transistor ensures low-ohmic discharge during disable, critical for sequencing in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.4 V ±2 % at 1 mA, ±3 % over −30 °C to +85 °C - tight regulation enables direct powering of 1.4 V logic or analog rails without external feedback. |
| Dropout Voltage | 80 mV typical at 200 mA - enables operation from 1.48 V input, maximizing battery runtime in single-cell Li-ion or Li-poly systems. |
| PSRR | −55 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding sensitive RF or audio circuitry. |
| Output Noise | 30 µV RMS (10 Hz–100 kHz) - meets low-noise requirements for ADC references, PLL VCO supplies, and precision op-amp biasing. |
| Enable Threshold | VIH = 1.4 V min, VIL = 0.4 V max - compatible with 1.8 V and 3.3 V GPIO without level-shifting; supports clean power sequencing. |
| Shutdown Current | 0.1 µA typical - reduces system standby power in always-on sensor nodes or wake-on-event applications. |
| Thermal Resistance | Rth(j-a) = 125 K/W - requires minimal PCB copper area for thermal management in compact handheld designs. |
Pinout & Package
SOT753 (TSOP5) plastic surface-mounted package: 5-lead gull-wing, body size 2.9 mm × 1.5 mm × 1.1 mm, pitch 0.95 mm, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Supply voltage input | Accepts 2.3 V to 5.5 V input; must be decoupled with ≥1 µF ceramic capacitor near pin for stability. |
| 2 GND | Supply ground | Primary return path for regulator current; connect directly to solid ground plane to minimize noise coupling. |
| 3 EN | Device enable input (active HIGH) | Drives internal pass transistor; logic HIGH ≥1.4 V enables regulation; LOW ≤0.4 V disables with 100 Ω pull-down. |
| 4 n.c. | Not connected | No internal connection; leave unconnected or tie to GND per layout best practice - no electrical function. |
| 5 OUT | Regulator output voltage | Delivers regulated 1.4 V; requires 1.0 µF X7R ceramic capacitor (ESR 5–500 mΩ) for loop stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise output | 30 µV RMS noise (10 Hz–100 kHz) enables clean supply for high-resolution ADCs and RF synthesizers. |
| Pull-down output stage | 100 Ω on-chip discharge path ensures rapid, controlled output collapse during disable - eliminates floating rail risks. |
| Fast startup | 200 µs to reach 95 % of 1.4 V output - supports dynamic power gating in portable devices with aggressive sleep/wake cycles. |
| Robust protection | Integrated thermal shutdown (160 °C, 20 K hysteresis), current limiting (300 mA peak), and 10 kV HBM ESD rating. |
| Miniaturized footprint | SOT753 package (2.9 × 1.5 mm) fits dense PCB layouts in smartphones, wearables, and IoT edge sensors. |
Applications
| Mobile Phone Baseband Power | Wearable Sensor Hub Supply |
|---|---|
Use Scenario: Powers 1.4 V I/O interface between application processor and cellular modem in slim smartphone designs. IC Role / Device Role / Timing Role: Low-noise LDO supplying voltage-referenced digital interface with strict 1.4 V tolerance and fast enable/disable control. Use Value: Enables reliable high-speed data transfer while minimizing noise-induced bit errors and extending battery life via ultra-low quiescent current in sleep mode. |
Use Scenario: Supplies 1.4 V to MEMS accelerometer/gyroscope and ultra-low-power MCU in fitness tracker PCBs. IC Role / Device Role / Timing Role: Sequenced power rail activated only during sensor sampling bursts; pulled low between readings. Use Value: Reduces average system power by >95 % during idle periods using sub-µA shutdown current and fast 200 µs wake-up. |
| Portable Audio DAC Bias | Industrial Handheld Meter Reference |
Use Scenario: Provides ultra-clean 1.4 V bias for stereo DAC's analog output stage in Bluetooth headphones. IC Role / Device Role / Timing Role: Low-noise post-regulator filtering switching converter ripple before audio signal path. Use Value: Achieves <−100 dB THD+N by suppressing 30 µV RMS noise and delivering 55 dB PSRR at audio frequencies. |
Use Scenario: Generates stable 1.4 V reference for 16-bit SAR ADC in battery-powered handheld multimeters. IC Role / Device Role / Timing Role: Precision voltage source with ±3 % output accuracy over temperature and load. Use Value: Maintains measurement accuracy across −10 °C to +60 °C operating range without calibration drift or external trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LD6806TD/14H,125 | High-ohmic (3-state) output when disabled vs. LD6806TD/14P,125's 100 Ω pull-down; identical dropout, noise, and PSRR. | Used where output must float during disable (e.g., shared bus lines); unsuitable for systems requiring forced discharge. | Select LD6806TD/14P,125 when controlled rail collapse is required; choose /14H only if 3-state behavior is explicitly needed. |
| Torex XC6219B142MR-G | 1.4 V fixed output, SOT-25 package, 150 mA rating, 250 mV dropout at 150 mA, 40 µV RMS noise - higher dropout and lower current capability. | Targeted at cost-sensitive consumer electronics with relaxed noise and load requirements; lacks thermal hysteresis and pull-down. | LD6806TD/14P,125 offers superior noise, lower dropout, higher current, and integrated discharge - preferred for performance-critical designs. |
Compared with LD6806TD/14H,125 and XC6219B142MR-G, the LD6806TD/14P,125 uniquely combines 100 Ω active pull-down, 80 mV dropout, and 30 µV noise in a thermally robust SOT753 package - making it optimal for sequenced, low-noise, high-efficiency portable power rails.
Availability
LD6806TD/14P,125 is available at Aetrix Electronics and suitable for mobile phone baseband interfaces, wearable sensor hubs, portable audio DAC biasing, and industrial handheld meter references requiring stable component supply and long-term lifecycle support.
Supply support for LD6806TD/14P,125 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 LD6806 series was designed specifically for miniaturized, low-noise power delivery in battery-operated portable electronics - emphasizing ultra-low dropout, fast transient response, and integrated protection in wafer-level and surface-mount packages.
FAQ
What is the maximum input voltage rating for LD6806TD/14P,125?
The LD6806TD/14P,125 supports an absolute maximum input voltage of +6.0 V for up to 4 ms transients, with recommended continuous operation between 2.3 V and 5.5 V. Exceeding 5.5 V continuously risks exceeding thermal limits or triggering overvoltage protection not specified in the datasheet. Always maintain VIN within the recommended range for reliable LD6806TD/14P,125 operation.
Does LD6806TD/14P,125 require an external output capacitor, and what type is recommended?
Yes, LD6806TD/14P,125 requires a minimum 1.0 µF X7R ceramic capacitor at the OUT pin for stability, with ESR between 5 mΩ and 500 mΩ. The capacitor must meet ±30 % tolerance over −40 °C to +125 °C. Using smaller or non-X7R types may cause oscillation or degraded transient response in the LD6806TD/14P,125.
How does the pull-down feature of LD6806TD/14P,125 function during disable?
When EN is driven LOW (≤0.4 V), LD6806TD/14P,125 activates an internal 100 Ω NMOS transistor between OUT and GND, actively discharging the output capacitance. This ensures rapid, predictable rail collapse - critical for power sequencing in multi-voltage systems. The LD6806TD/14P,125 does not float its output like /H variants.
What is the thermal shutdown behavior of LD6806TD/14P,125?
LD6806TD/14P,125 shuts down at 160 °C junction temperature and remains off until junction cools by 20 K (to ~140 °C) due to built-in hysteresis. This prevents thermal cycling during overload. The LD6806TD/14P,125 resumes regulation automatically once safe temperature is restored, with no external reset required.
Can LD6806TD/14P,125 be used with a 1.8 V enable signal?
Yes - LD6806TD/14P,125 specifies VIH ≥1.4 V and VIL ≤0.4 V, making it fully compatible with standard 1.8 V GPIO outputs. A 1.8 V logic HIGH exceeds the minimum enable threshold, ensuring reliable turn-on; the LD6806TD/14P,125 draws only 100 µA quiescent current when enabled.
LD6806TD/14P,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 1.4V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.13V @ 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:
- 5-TSOP
LD6806TD/14P,125 FAQ
1.How can I place an order for LD6806TD/14P,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6806TD/14P,125 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 LD6806TD/14P,125 reliable?
The price and inventory of LD6806TD/14P,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6806TD/14P,125 is usually 5 days.
3.What payment methods are accepted for LD6806TD/14P,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6806TD/14P,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6806TD/14P,125?
LD6806TD/14P,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6806TD/14P,125 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 LD6806TD/14P,125?
For technical support, including LD6806TD/14P,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6806TD/14P,125 requirements.
6.How does Aetrix verify that LD6806TD/14P,125 is sourced from the original manufacturer or authorized distributors?
All LD6806TD/14P,125 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 LD6806TD/14P,125 meets industry standards.
7.What is the process for return or replacement of LD6806TD/14P,125?
All LD6806TD/14P,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6806TD/14P,125, 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 LD6806TD/14P,125 part is unused and in its original packaging.
Return procedure for LD6806TD/14P,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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