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NXP Semiconductors LD6806TD/28P,125
- Part No.:
- LD6806TD/28P,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6806TD/28P,125.pdf
- Description:
- IC REG LINEAR 2.8V 200MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,463
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Product details
Overview
LD6806TD/28P,125 from NXP Semiconductors is a 2.8 V, 200 mA ultra-low-dropout linear regulator in SOT753 (TSOP5) package with 80 mV typical dropout at full load, 30 µV RMS output noise (10 Hz–100 kHz), and active-HIGH enable pin. It delivers stable low-noise power for RF front-ends and precision analog circuitry in space-constrained mobile handsets and media players.
For engineers reviewing the LD6806TD/28P,125 datasheet, LD6806TD/28P,125 pinout, LD6806TD/28P,125 application, or LD6806TD/28P,125 equivalent, key selection criteria include its low-noise performance, thermal shutdown (160 °C), pull-down output stage during disable, PSRR of −55 dB at 1 kHz, and compatibility with 1 µF X7R ceramic output capacitors.
Technical Context
The LD6806TD/28P,125 integrates a bandgap reference, error amplifier, and P-channel pass transistor in monolithic silicon. Its low-ohmic pull-down transistor (Rpd = 100 Ω) ensures rapid output discharge during disable, critical for sequencing-sensitive systems. The regulator operates across −40 °C to +85 °C ambient with internal overcurrent and thermal protection.
Designed for high PSRR and low noise, it uses a feedback loop optimized for stability with 1 µF ±30 % X7R output capacitance. The enable threshold (VIH = 1.4 V min, VIL = 0.4 V max) is independent of input voltage, supporting robust digital control from 1.8 V or 3.3 V logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.8 V nominal; ±2 % over −30 °C to +85 °C ensures tight regulation for 2.8 V I/O rails and analog sensors. |
| Dropout Voltage | 80 mV typical at 200 mA; enables operation from 2.88 V input when VIN ≥ 2.3 V, maximizing battery runtime in single-cell Li-ion systems. |
| Noise (RMS) | 30 µV over 10 Hz–100 kHz; supports noise-sensitive applications like RF transceivers and ADC reference supplies without added filtering. |
| PSRR | −55 dB at 1 kHz; suppresses switching noise from upstream DC-DC converters, reducing need for additional LC filtering. |
| Quiescent Current | 70 µA typical at no load; drops to 0.1 µA in shutdown (VEN ≤ 0.4 V), extending standby time in always-on subsystems. |
| Enable Threshold | VIH = 1.4 V min, VIL = 0.4 V max; compatible with 1.8 V GPIO without level-shifting, simplifying host MCU interface. |
| Thermal Shutdown | 160 °C junction temperature with 20 K hysteresis; protects against sustained overload while allowing recovery after cooling. |
Pinout & Package
SOT753 (TSOP5) plastic surface-mounted package: 3.0 mm × 2.5 mm × 1.1 mm body, gull-wing leads, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply voltage | Accepts 2.3 V to 5.5 V; requires local 1 µF ceramic decoupling close to pin for stability and transient response. |
| 2 (GND) | Ground reference | Low-impedance return path; must connect directly to PCB ground plane to minimize noise coupling and thermal resistance (Rth(j-a) = 125 K/W). |
| 3 (EN) | Enable control input | Active-HIGH logic; drives internal pass transistor; 1.4 V min threshold allows direct connection to 1.8 V or 3.3 V microcontroller outputs. |
| 4 (n.c.) | No-connect terminal | Internally unconnected; must remain floating-no external connection or PCB trace required. |
| 5 (OUT) | Regulated output | Delivers 2.8 V at up to 200 mA; includes integrated 100 Ω pull-down transistor activated during disable for fast discharge. |
Key Features
| Feature | Design Value |
|---|---|
| Pull-down output stage | 100 Ω on-chip NMOS discharge path ensures <300 µs output decay during disable-critical for power sequencing in multi-rail SoC designs. |
| Low-noise regulation | 30 µV RMS noise (10 Hz–100 kHz) eliminates need for post-LDO ferrite beads or RC filters in RF and audio signal chains. |
| Fast start-up | 200 µs to reach 95 % of 2.8 V output enables responsive power management in wake-from-sleep scenarios. |
| ESD robustness | 10 kV HBM ESD rating allows safe handling and board assembly without special precautions beyond standard ESD protocols. |
| Thermal watchdog | 160 °C shutdown with 20 K hysteresis prevents latch-up during thermal overload while enabling automatic recovery after cooldown. |
Applications
| Mobile Phone RF Front-End | Portable Media Player Audio Codec |
|---|---|
Use Scenario: Powering LNA, mixer, and PA bias rails in 4G/5G handset transceivers where supply noise directly impacts EVM and ACLR. IC Role / Device Role / Timing Role: Low-noise, sequenced voltage source delivering clean 2.8 V to RF ICs with fast enable/disable for TDD burst mode. Use Value: 30 µV RMS noise and −55 dB PSRR prevent baseband interference; pull-down discharge ensures RF block isolation during sleep. | Use Scenario: Supplying DAC, ADC, and headphone amplifier stages in battery-powered MP3 players requiring low THD+N and long playback time. IC Role / Device Role / Timing Role: Precision analog supply rail with tight output tolerance (±2 %) and minimal quiescent current (70 µA). Use Value: Enables >20-hour battery life in standby; low dropout preserves headroom from single-cell Li-ion (3.0 V min), avoiding brownout during peak audio loads. |
| Wearable Sensor Hub | IoT Edge Node Microcontroller Core |
Use Scenario: Powering MEMS accelerometers, gyroscopes, and environmental sensors in compact wearables where board area and thermal dissipation are constrained. IC Role / Device Role / Timing Role: Miniaturized 2.8 V supply with SOT753 footprint (3.0 × 2.5 mm) and thermal resistance of 125 K/W for passive cooling. Use Value: Small size fits dense wearable layouts; 10 kV HBM ESD withstands handling during manual assembly; 0.1 µA shutdown current extends coin-cell battery life. | Use Scenario: Providing regulated 2.8 V core voltage to ARM Cortex-M microcontrollers in battery-operated smart sensors with deep-sleep modes. IC Role / Device Role / Timing Role: Enable-controlled power domain that powers CPU, flash, and SRAM only during active computation cycles. Use Value: 200 µs start-up enables rapid wake-up from deep sleep; pull-down output prevents floating state on reset, ensuring deterministic boot behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0528DBVR | 200 mA, 2.8 V, 170 mV dropout (typ), 25 µV noise, SOT-23-5 package | Lacks integrated pull-down; requires external discharge resistor for sequencing | Choose for lower noise where output discharge timing is non-critical and board space permits external components. |
| MCP1700-2802E/TO | 250 mA, 2.8 V, 175 mV dropout (typ), 30 µV noise, TO-92 through-hole | Through-hole package; no enable pin; higher thermal resistance (200 K/W) | Choose for prototyping or low-volume through-hole designs where reflow constraints exist and enable control is unnecessary. |
Compared with TPS7A0528DBVR and MCP1700-2802E/TO, LD6806TD/28P,125 uniquely combines 80 mV dropout, integrated pull-down, and SOT753 footprint-enabling compact, sequenced, low-power designs without external discharge circuitry or layout compromises.
Availability
LD6806TD/28P,125 is available at Aetrix Electronics and suitable for mobile handset power management, portable audio subsystems, and wearable sensor node designs requiring stable component supply and long-term lifecycle support.
Supply support for LD6806TD/28P,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 consumer markets.
The LD6806 series was designed specifically for miniaturized, low-noise power delivery in battery-powered portable electronics-emphasizing ultra-low dropout, fast transient response, and integrated protection features for high-reliability handheld applications.
FAQ
What is the maximum input voltage rating for LD6806TD/28P,125?
The absolute maximum input voltage for LD6806TD/28P,125 is +6.0 V for 4 ms transients, with recommended continuous operation between 2.3 V and 5.5 V. Exceeding 6.0 V-even briefly-may cause permanent damage. The device's 125 K/W thermal resistance and 160 °C thermal shutdown provide secondary protection under overload, but proper input conditioning (e.g., TVS diode) is required for systems exposed to voltage surges.
Does LD6806TD/28P,125 require an external output capacitor, and what type is recommended?
Yes, LD6806TD/28P,125 requires a minimum 1.0 µF X7R ceramic capacitor at the OUT pin for stability, with ±30 % tolerance over −40 °C to +125 °C. The datasheet specifies ESR between 5 mΩ and 500 mΩ. Using smaller or lower-quality capacitors risks oscillation or poor load transient response. An input capacitor (also 1 µF X7R) is strongly recommended to suppress high-frequency noise from upstream sources.
How does the pull-down feature of LD6806TD/28P,125 function during disable?
When the EN pin is driven LOW (≤0.4 V), LD6806TD/28P,125 activates an internal 100 Ω NMOS transistor between OUT and GND, discharging the output capacitance to 10 % of nominal voltage within 300 µs. This eliminates floating outputs and ensures clean power-down sequencing-critical for preventing back-powering or latch-up in multi-rail systems. No external components are needed to achieve this behavior.
What is the typical startup time for LD6806TD/28P,125, and how is it measured?
The typical startup time for LD6806TD/28P,125 is 200 µs, defined as the time from EN rising above 1.4 V to OUT reaching 95 % of 2.8 V (2.66 V) under 200 mA load with 1 µF output capacitance. This measurement assumes VIN = 5.5 V and Tamb = 25 °C. Startup time increases slightly at lower input voltages or colder temperatures due to reduced drive strength in the internal pass transistor.
Is LD6806TD/28P,125 compatible with lead-free reflow soldering processes?
Yes, LD6806TD/28P,125 is fully compatible with lead-free reflow soldering per J-STD-020C. Its SOT753 package has a body thickness <1.6 mm and volume <350 mm³, requiring a peak reflow temperature of 260 °C. Standard SnAgCu paste profiles with preheat (150–200 °C), soak (180–200 °C), and ramp-to-peak (≤3 °C/s) are appropriate. Moisture sensitivity level (MSL) is not specified in the provided documentation, but standard MSL-1 handling applies unless otherwise indicated by NXP.
LD6806TD/28P,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):
- 2.8V
- 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/28P,125 FAQ
1.How can I place an order for LD6806TD/28P,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6806TD/28P,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/28P,125 reliable?
The price and inventory of LD6806TD/28P,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/28P,125 is usually 5 days.
3.What payment methods are accepted for LD6806TD/28P,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6806TD/28P,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6806TD/28P,125?
LD6806TD/28P,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6806TD/28P,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/28P,125?
For technical support, including LD6806TD/28P,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6806TD/28P,125 requirements.
6.How does Aetrix verify that LD6806TD/28P,125 is sourced from the original manufacturer or authorized distributors?
All LD6806TD/28P,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/28P,125 meets industry standards.
7.What is the process for return or replacement of LD6806TD/28P,125?
All LD6806TD/28P,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6806TD/28P,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/28P,125 part is unused and in its original packaging.
Return procedure for LD6806TD/28P,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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