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NXP Semiconductors LD6806TD/33P,125
- Part No.:
- LD6806TD/33P,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6806TD/33P,125.pdf
- Description:
- IC REG LINEAR 3.3V 200MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,469
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Product details
Overview
LD6806TD/33P,125 from NXP Semiconductors is a 3.3 V, 200 mA ultra-low-dropout linear regulator in SOT753 (TSOP5) package with 80 mV typical dropout at full load, 30 µVRMS output noise (10 Hz–100 kHz), and active-HIGH enable pin. It delivers stable low-noise power for RF and analog circuitry in space-constrained mobile handsets and portable media players.
For engineers reviewing the LD6806TD/33P,125 datasheet, LD6806TD/33P,125 pinout, LD6806TD/33P,125 application, or LD6806TD/33P,125 equivalent, key selection criteria include its low-ohmic pull-down output stage during disable, thermal shutdown at 160 °C, ±0.5 % output voltage accuracy at +25 °C, and PSRR of −55 dB at 1 kHz - all critical for noise-sensitive battery-powered systems.
Technical Context
The LD6806TD/33P,125 uses a monolithic silicon LDO architecture with internal reference generator, overcurrent protection, and thermal watchdog. Its pass transistor operates in linear mode with minimal VIN–VOUT headroom, enabling operation down to 2.3 V input while maintaining regulated 3.3 V output.
Unlike high-ohmic variants (e.g., LD6806TD/33H), this P-suffix device integrates a dedicated pull-down switching transistor on the OUT pin, ensuring rapid discharge to ground (<300 µs shutdown time) when EN is deasserted - essential for sequencing and leakage control in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 3.3 V nominal, ±0.5 % tolerance at +25 °C - ensures compatibility with 3.3 V logic and analog ICs without external trimming. |
| Dropout voltage | 80 mV typical at 200 mA - enables >97 % efficiency at 3.3 V output from 3.4 V input, extending battery runtime. |
| PSRR | −55 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Output noise | 30 µVRMS (10 Hz–100 kHz) - meets low-noise requirements for ADC references and RF synthesizers. |
| Enable threshold | VIH = 1.4 V min, VIL = 0.4 V max - compatible with 1.8 V and 3.3 V GPIOs without level-shifting. |
| Thermal shutdown | 160 °C with 20 K hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
| Quiescent current | 0.1–1.0 µA in shutdown - minimizes standby power in always-on subsystems. |
Pinout & Package
SOT753 (TSOP5) plastic surface-mounted package: 5-lead gull-wing, 2.7 mm × 3.1 mm × 1.3 mm body, 0.95 mm lead pitch, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input supply voltage | Accepts 2.3–5.5 V; requires ≥1 µF input capacitor for stability and transient response. |
| 2 GND | Ground reference | Low-impedance return path; must connect directly to PCB ground plane for thermal and noise performance. |
| 3 EN | Enable control input | Active-HIGH logic; drives internal regulator core; pulled low by default if left unconnected. |
| 4 n.c. | No connection | Internally unconnected; must remain floating - no external tie or routing. |
| 5 OUT | Regulated output | 3.3 V source with integrated 100 Ω pull-down transistor when disabled - ensures fast, controlled discharge. |
Key Features
| Feature | Design Value |
|---|---|
| Low-ohmic output stage during disable | 100 Ω pull-down resistance ensures <300 µs output discharge - eliminates floating rail risk in power sequencing. |
| Ultra-low noise regulation | 30 µVRMS output noise supports precision analog circuits without additional filtering. |
| Fast start-up | 200 µs to reach 95 % of 3.3 V - enables rapid system wake-up from deep sleep modes. |
| Robust ESD protection | 10 kV HBM - withstands handling and board-level electrostatic events without derating. |
| Thermal and overcurrent protection | Auto-recovery shutdown at 160 °C and current limiting at ~600 mA - protects against short-circuit faults. |
Applications
| Mobile Phone Baseband Power | Portable Media Player Audio Codec Supply |
|---|---|
Use Scenario: Powers baseband processor I/O and memory interfaces in 3G/4G handset designs where input rail varies from 3.4–4.2 V battery. IC Role / Device Role / Timing Role: Primary low-noise 3.3 V LDO delivering clean power to sensitive digital logic and PLL circuits. Use Value: 80 mV dropout preserves battery life; 55 dB PSRR rejects ripple from buck converter feeding the LDO input. | Use Scenario: Supplies audio DAC and headphone amplifier in battery-powered MP3 players with tight PCB area constraints. IC Role / Device Role / Timing Role: Low-noise post-regulator decoupling noisy switch-mode supplies for analog signal chain. Use Value: 30 µVRMS noise prevents audible hiss; SOT753 footprint fits compact 2-layer PCB layouts. |
| Bluetooth SoC Core Voltage | IoT Sensor Hub Reference Rail |
Use Scenario: Provides stable 3.3 V to Bluetooth 5.0 SoC RF transceiver and digital core in wearable devices. IC Role / Device Role / Timing Role: Sequenced enable-controlled LDO ensuring proper power-up order relative to MCU and radio. Use Value: Active-HIGH EN pin synchronizes with host MCU GPIO; 100 Ω pull-down prevents RF interference during sleep. | Use Scenario: Generates precision 3.3 V reference for multi-sensor fusion hub (accelerometer, gyroscope, environmental sensors). IC Role / Device Role / Timing Role: Low-drift, low-noise supply for ADC reference and sensor biasing networks. Use Value: ±0.5 % output accuracy over temperature ensures consistent sensor calibration; 1.0 µF output cap meets stability requirement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LD6806TD/33H,125 | Same package and output voltage, but high-ohmic (3-state) output when disabled - no integrated pull-down transistor. | Used where output must float during disable (e.g., shared bus lines), not for rapid discharge. | Select LD6806TD/33H,125 only if system requires tri-state behavior; LD6806TD/33P,125 is mandatory for controlled rail collapse. |
| Torex XC6206P332MR-G | 3.3 V, 250 mA SOT-23-5 LDO; 150 mV dropout at 200 mA; no thermal shutdown; 40 µVRMS noise. | Lacks thermal protection and has higher noise - unsuitable for thermally constrained or precision analog use cases. | XC6206P332MR-G offers smaller footprint but trades off safety and noise performance; verify thermal margin and noise budget before substitution. |
Compared with LD6806TD/33H,125, the LD6806TD/33P,125 provides guaranteed output discharge for safe sequencing, while versus XC6206P332MR-G it adds thermal shutdown and lower noise - making it preferable for mission-critical portable electronics requiring reliability and signal integrity.
Availability
LD6806TD/33P,125 is available at Aetrix Electronics and suitable for mobile handset power management, portable audio subsystems, and IoT sensor node regulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LD6806TD/33P,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 battery-powered devices demanding ultra-low dropout, low noise, and fast enable/disable control - targeting mobile phones, cordless telephones, and personal digital assistants.
FAQ
What is the maximum input voltage rating for LD6806TD/33P,125?
The LD6806TD/33P,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 during normal operation risks violating thermal limits and may trigger shutdown, especially under high ambient temperatures or poor PCB heat dissipation.
Does LD6806TD/33P,125 require an external output capacitor, and what value is recommended?
Yes, LD6806TD/33P,125 requires a minimum 1.0 µF ceramic output capacitor (X7R dielectric preferred) with ESR between 5 mΩ and 500 mΩ for stability. The capacitor must maintain ≥0.7 µF across −40 °C to +125 °C; undersizing causes oscillation or excessive startup/shutdown delay.
How does the pull-down transistor in LD6806TD/33P,125 affect system power sequencing?
The integrated 100 Ω pull-down transistor on the OUT pin of LD6806TD/33P,125 actively discharges the output rail to ground within 300 µs after EN is deasserted. This eliminates floating voltages that could cause latch-up in downstream logic and ensures deterministic reset timing in multi-rail systems - a key advantage over high-ohmic variants like LD6806TD/33H,125.
What is the typical quiescent current of LD6806TD/33P,125 under load and in shutdown?
In shutdown (EN ≤ 0.4 V), LD6806TD/33P,125 draws 0.1–1.0 µA typical quiescent current. Under active operation at 200 mA load and +25 °C, it consumes 155–250 µA. This low active IQ supports extended battery life in always-on monitoring functions without compromising regulation performance.
Is LD6806TD/33P,125 compatible with lead-free reflow soldering processes?
Yes, LD6806TD/33P,125 is RoHS-compliant and qualified for lead-free reflow per J-STD-020C. Its SOT753 package falls under the <350 mm³ volume category and requires a peak reflow temperature of 260 °C. Proper solder paste volume and thermal profile adherence are essential to avoid voiding or delamination.
LD6806TD/33P,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):
- 3.3V
- 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/33P,125 FAQ
1.How can I place an order for LD6806TD/33P,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6806TD/33P,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/33P,125 reliable?
The price and inventory of LD6806TD/33P,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/33P,125 is usually 5 days.
3.What payment methods are accepted for LD6806TD/33P,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6806TD/33P,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6806TD/33P,125?
LD6806TD/33P,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6806TD/33P,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/33P,125?
For technical support, including LD6806TD/33P,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6806TD/33P,125 requirements.
6.How does Aetrix verify that LD6806TD/33P,125 is sourced from the original manufacturer or authorized distributors?
All LD6806TD/33P,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/33P,125 meets industry standards.
7.What is the process for return or replacement of LD6806TD/33P,125?
All LD6806TD/33P,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6806TD/33P,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/33P,125 part is unused and in its original packaging.
Return procedure for LD6806TD/33P,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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