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NXP Semiconductors LD6806TD/36H,125
- Part No.:
- LD6806TD/36H,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6806TD/36H,125.pdf
- Description:
- IC REG LINEAR 3.6V 200MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,750
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Product details
Overview
LD6806TD/36H from NXP Semiconductors is a 3.6 V, 200 mA ultra-low-dropout linear regulator in SOT753 (TSOP5) package, featuring 80 mV typical dropout at full load, 30 µVRMS output noise (10 Hz–100 kHz), and active-HIGH enable with high-ohmic (3-state) output during disable. It operates from 2.3 V to 5.5 V input and targets power-sensitive mobile handset subsystems requiring stable low-noise bias.
For engineers reviewing the LD6806TD/36H datasheet, LD6806TD/36H pinout, LD6806TD/36H application, or LD6806TD/36H equivalent, key selection criteria include its 3.6 V fixed output, thermal shutdown (160 °C), current limiting, PSRR of −55 dB at 1 kHz, and compatibility with 1 µF X7R ceramic output capacitors for fast start-up (200 µs) in space-constrained portable designs.
Technical Context
The LD6806TD/36H implements a PMOS pass transistor architecture enabling ultra-low dropout and high PSRR. Its internal reference generator, error amplifier, and thermal/current protection circuitry are monolithically integrated in silicon. The device uses an external 1 µF output capacitor for stability and exhibits minimal load regulation error (0.005 %/mA typical).
Unlike LD6806x/xxP variants, the /36H suffix denotes high-ohmic output state when disabled-no pull-down transistor-making it suitable for systems requiring isolation between LDO output and downstream circuitry during standby. ESD robustness is rated at ±10 kV HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.6 V ±2 % over −40 °C to +85 °C ambient; supports precision analog rails in battery-powered devices. |
| Dropout Voltage | 80 mV typical at 200 mA load; enables operation with VIN as low as 3.68 V while maintaining regulation. |
| 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); ensures clean supply for RF front-ends and ADC reference circuits. |
| Quiescent Current | 70–100 µA typical under load; reduces standby power in always-on mobile subsystems. |
| Enable Threshold | VIH = 1.4 V min, VIL = 0.4 V max; compatible with 1.8 V and 3.3 V logic-level microcontrollers. |
| Thermal Shutdown | 160 °C junction temperature with 20 K hysteresis; protects against sustained overload or poor PCB thermal design. |
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 voltage supply | Accepts 2.3 V–5.5 V; requires local 1 µF ceramic decoupling close to pin. |
| 2 (GND) | Ground reference | Low-impedance return path; must connect directly to PCB ground plane for noise and thermal performance. |
| 3 (EN) | Enable control input | Active-HIGH logic; drives internal regulator core; <0.4 V disables, >1.4 V enables. |
| 4 (n.c.) | No-connect terminal | Not bonded internally; must remain unconnected on PCB to avoid parasitic coupling. |
| 5 (OUT) | Regulated output | Delivers 3.6 V @ up to 200 mA; high-ohmic (3-state) when EN = LOW; requires 1 µF X7R output capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 80 mV typical at 200 mA enables use with Li-ion batteries down to 3.68 V input without dropout. |
| Low-noise regulation | 30 µVRMS output noise supports sensitive analog/RF blocks without additional filtering. |
| Fast start-up | 200 µs to reach 95 % of 3.6 V output allows rapid subsystem wake-up in power-gated architectures. |
| High-ohmic disable | Open-circuit output during disable prevents back-powering or leakage into powered-down circuitry. |
| Integrated protection | Thermal shutdown (160 °C), current limiting (~600 mA short-circuit), and ±10 kV HBM ESD ensure field reliability. |
Applications
| Mobile Handset Audio Codec Supply | Portable Media Player SD Card Interface |
|---|---|
|
Use Scenario: Powering stereo audio DAC/ADC in smartphone baseband subsystem with shared Li-ion battery rail. IC Role / Device Role / Timing Role: Low-noise 3.6 V bias source for analog signal chain; no timing function. Use Value: 30 µVRMS noise prevents audible hiss; 80 mV dropout extends usable battery life by ~12 minutes at end-of-discharge. |
Use Scenario: Supplying 3.3 V–3.6 V interface voltage for SD/MMC card slot in handheld media player. IC Role / Device Role / Timing Role: Fixed-output LDO providing isolated, regulated I/O voltage; no timing function. Use Value: High-ohmic disable isolates SD bus during sleep mode, eliminating standby current draw from card. |
| Bluetooth LE Module Core Logic | Wearable Sensor Hub Power Rail |
|
Use Scenario: Delivering clean 3.6 V to Bluetooth SoC core logic in compact earbud design. IC Role / Device Role / Timing Role: Primary low-noise power source for digital baseband; no timing function. Use Value: −55 dB PSRR rejects noise from switching buck converter powering other subsystems, preventing BLE packet loss. |
Use Scenario: Regulating sensor hub MCU and MEMS accelerometer supply in fitness tracker with tight board area. IC Role / Device Role / Timing Role: Compact-area LDO supplying mixed-signal sensor interface; no timing function. Use Value: SOT753 footprint (2.7 × 3.1 mm) saves >40 % board area vs. SOIC-8 alternatives while supporting 200 mA peak loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LD6806F/36H | SOT886 (XSON6) 1.0 × 1.45 mm package; 220 K/W thermal resistance vs. 125 K/W for SOT753; same electrical specs. | Better suited for ultra-dense layouts where height (<0.5 mm) is critical; lower thermal mass may require tighter layout control. | Select LD6806F/36H only if board stack height is constrained below 0.6 mm and thermal vias are feasible. |
| TPS7A0536PDBVR | Texas Instruments part; 3.6 V, 200 mA, 170 mV dropout, 25 µVRMS noise, SOT-23-5; no thermal shutdown hysteresis. | Lower noise but higher dropout limits usable input range; lacks TSD hysteresis, increasing risk of thermal oscillation under marginal cooling. | Choose TPS7A0536PDBVR only if noise is primary concern and input headroom exceeds 3.77 V; verify thermal margin rigorously. |
Compared with LD6806F/36H, the LD6806TD/36H offers superior thermal performance (125 vs. 220 K/W) in a slightly larger but more manufacturable gull-wing package; versus TPS7A0536PDBVR, it trades 5 µV noise reduction for robust thermal protection and wider input compatibility.
Availability
LD6806TD/36H is available at Aetrix Electronics and suitable for mobile handset power management, portable media player subsystems, and wearable sensor hub designs requiring stable component supply with guaranteed long-term availability.
Supply support for LD6806TD/36H 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 portable electronics requiring ultra-low-noise, low-dropout regulation with integrated protection-targeting mobile phone handsets, cordless telephones, and personal digital assistants.
FAQ
What is the maximum input voltage rating for LD6806TD/36H?
The absolute maximum input voltage for LD6806TD/36H is +6.0 V for transient events up to 4 ms, per the datasheet limiting values table. For continuous operation, the recommended input range is 2.3 V to 5.5 V. Exceeding 5.5 V continuously risks permanent damage due to junction overheating or oxide breakdown, even if within the 6.0 V transient limit.
Does LD6806TD/36H require an input capacitor?
While not strictly mandatory for stability, LD6806TD/36H strongly recommends a 1 µF X7R ceramic input capacitor placed near the IN pin to suppress high-frequency noise and transient spikes from upstream sources. Without it, line regulation and PSRR performance degrade, especially when fed from switching regulators or long PCB traces.
What is the shutdown behavior of LD6806TD/36H when the EN pin is pulled low?
When EN is pulled below 0.4 V, LD6806TD/36H enters shutdown mode and places its OUT pin in a high-ohmic (3-state) condition-neither sourcing nor sinking current. This isolates the output from downstream circuitry, eliminating back-powering and reducing system standby current to ≤1.0 µA typical.
Can LD6806TD/36H be used with a 0.47 µF output capacitor?
No-LD6806TD/36H requires a minimum 1.0 µF X7R ceramic output capacitor for guaranteed stability across temperature and load conditions. Using 0.47 µF violates the datasheet's CL(ext) specification and may cause oscillation, excessive overshoot during start-up, or degraded load transient response, particularly above 85 °C ambient.
How does the thermal resistance of LD6806TD/36H compare to other packages in the LD6806 family?
LD6806TD/36H in SOT753 has a typical Rth(j-a) of 125 K/W, significantly lower than LD6806F/36H (XSON6, 220 K/W) and comparable to LD6806CX4/36H (WLCSP4, 130 K/W). This makes the SOT753 variant the best choice among /36H options for thermally demanding applications without aggressive PCB copper spreading.
LD6806TD/36H,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):
- 3.6V
- 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/36H,125 FAQ
1.How can I place an order for LD6806TD/36H,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6806TD/36H,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/36H,125 reliable?
The price and inventory of LD6806TD/36H,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/36H,125 is usually 5 days.
3.What payment methods are accepted for LD6806TD/36H,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6806TD/36H,125 transactions.
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4.How is shipping managed for LD6806TD/36H,125?
LD6806TD/36H,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6806TD/36H,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/36H,125?
For technical support, including LD6806TD/36H,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6806TD/36H,125 requirements.
6.How does Aetrix verify that LD6806TD/36H,125 is sourced from the original manufacturer or authorized distributors?
All LD6806TD/36H,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/36H,125 meets industry standards.
7.What is the process for return or replacement of LD6806TD/36H,125?
All LD6806TD/36H,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6806TD/36H,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/36H,125 part is unused and in its original packaging.
Return procedure for LD6806TD/36H,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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