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NXP Semiconductors LD6836TD/27H,125
- Part No.:
- LD6836TD/27H,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6836TD/27H,125.pdf
- Description:
- IC REG LINEAR 2.7V 300MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:31,073
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Product details
Overview
LD6836TD/27H,125 from NXP Semiconductors is a 2.7 V fixed-output, 300 mA ultra-low-dropout linear regulator in SOT753 package, featuring 100 mV typical dropout at full load, 55 dB PSRR at 1 kHz, and 30 µVRMS output noise (10 Hz–100 kHz), designed for power-sensitive mobile interfaces including smartphone baseband and camera sensor rails.
For engineers reviewing the LD6836TD/27H,125 datasheet, LD6836TD/27H,125 pinout, LD6836TD/27H,125 application, or LD6836TD/27H,125 equivalent, key selection criteria include high-ohmic (3-state) output during disable, thermal shutdown at 160 °C, low quiescent current (0.1 µA in shutdown), and compatibility with 0.7–1.0 µF X7R output capacitors for stable operation across −40 °C to +85 °C ambient.
Technical Context
The LD6836TD/27H,125 implements a PMOS pass transistor architecture enabling ultra-low dropout and high PSRR without requiring external compensation. Its enable input (active HIGH, VIH ≥ 1.1 V) controls a precision bandgap reference and error amplifier that regulates output voltage with ±0.5% initial accuracy at 25 °C and ±3% over full temperature range.
Thermal protection activates at 160 °C junction temperature with 20 K hysteresis, while overcurrent limiting caps peak output at 350 mA and short-circuit current at 600 mA. The device operates from 2.3 V to 5.5 V input and maintains stability with 0.7–1.0 µF output capacitance and ESR between 5 mΩ and 500 mΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7 V ±3% over −40 °C to +85 °C; enables direct replacement of 2.7 V logic or analog supply rails without external feedback. |
| Dropout Voltage | 100 mV typical at 300 mA; allows operation with VIN as low as 2.8 V, maximizing battery runtime in single-cell Li-ion systems. |
| PSRR | 55 dB at 1 kHz; suppresses switching noise from upstream DC-DC converters feeding noisy power domains. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz); meets low-noise requirements for RF front-end biasing and high-resolution ADC references. |
| Quiescent Current | 0.1 µA in shutdown mode; reduces system standby power in always-on sensor nodes and IoT endpoints. |
| Enable Threshold | VIL ≤ 0.4 V, VIH ≥ 1.1 V; compatible with 1.8 V and 3.3 V GPIOs without level-shifting circuitry. |
| Thermal Shutdown | 160 °C with 20 K hysteresis; prevents permanent damage during transient overload or poor PCB thermal design. |
Pinout & Package
SOT753 plastic surface-mounted package (3.1 mm × 2.7 mm × 1.3 mm), 5-lead, RoHS-compliant, Pb-free, halogen- and antimony-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input voltage | Accepts 2.3–5.5 V input; requires local 0.7–1.0 µF ceramic decoupling capacitor near pin. |
| 2 (GND) | Supply ground | Primary return path for load current and internal bias; must connect to low-impedance ground plane. |
| 3 (EN) | Device enable input | Active HIGH control; drives LDO into high-ohmic (3-state) output when pulled LOW (<0.4 V). |
| 4 (n.c.) | Not connected | No internal connection; must remain unconnected on PCB to avoid parasitic coupling or leakage paths. |
| 5 (OUT) | Regulator output voltage | Delivers regulated 2.7 V; connects to load and 0.7–1.0 µF X7R output capacitor for stability and noise filtering. |
Key Features
| Feature | Design Value |
|---|---|
| High-ohmic output disable | Enables true 3-state behavior during shutdown-no loading of downstream circuits or unintended discharge paths. |
| Ultra-low noise regulation | 30 µVRMS output noise ensures clean power for noise-sensitive analog blocks like PLLs and audio codecs. |
| Fast start-up time | 150 µs to reach 95% of 2.7 V output enables rapid wake-up in power-gated subsystems. |
| Integrated ESD protection | 10 kV HBM rating eliminates need for external TVS diodes in handheld product designs. |
| Thermal and current limiting | Self-protecting operation under overload or ambient temperature rise prevents field failures without external monitoring. |
Applications
| Smartphone Baseband Power | Digital Camera Sensor Bias |
|---|---|
Use Scenario: Supplying core voltage to LTE/5G baseband processors during burst transmission modes with tight voltage tolerance. IC Role / Device Role / Timing Role: Primary low-noise LDO delivering stable 2.7 V rail with fast transient response to dynamic current demands. Use Value: Maintains processor timing integrity and reduces bit error rate by suppressing ripple-induced jitter on clock distribution networks. | Use Scenario: Providing clean bias to CMOS image sensor analog front-end during high-speed readout sequences. IC Role / Device Role / Timing Role: Low-noise, low-dropout regulator isolating sensor analog supply from noisy digital domain. Use Value: Reduces fixed-pattern noise and improves SNR by minimizing RMS noise contribution to pixel signal chain. |
| Portable Media Player Audio DAC | Personal Navigation Device GPS Front-End |
Use Scenario: Powering stereo audio DACs requiring ultra-low noise and precise 2.7 V reference for THD+N optimization. IC Role / Device Role / Timing Role: Dedicated LDO for audio signal path, decoupled from shared system rail. Use Value: Achieves <−105 dB THD+N by eliminating switching noise coupling into sensitive analog audio outputs. | Use Scenario: Supplying LNA and downconverter stages in GPS/GNSS receivers operating from single-cell lithium battery. IC Role / Device Role / Timing Role: Low-dropout regulator maintaining 2.7 V under battery sag to sustain RF gain and sensitivity. Use Value: Extends cold-start acquisition time and improves position fix accuracy by stabilizing RF front-end bias under varying input conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LD6836TD/27P | Same 2.7 V output and SOT753 package but includes integrated pull-down transistor for auto-discharge function. | Required where rapid output discharge after disable is needed (e.g., multi-rail sequencing, I²C bus isolation). | Select LD6836TD/27P only if active low-ohmic discharge is required; LD6836TD/27H,125 is preferred for 3-state isolation. |
| Torex XC6206P272MR-G | 2.7 V fixed output, SOT-23-5 package, 150 mA rating, 200 mV dropout at 100 mA, no enable pin. | Lacks enable control and thermal shutdown; suitable only for simple always-on 2.7 V rails with lower current demand. | Use XC6206P272MR-G only in cost-sensitive, non-sequenced, low-current applications where enable and protection features are unnecessary. |
Compared with LD6836TD/27P, LD6836TD/27H,125 provides true 3-state disable for system-level isolation, while XC6206P272MR-G offers lower cost but sacrifices enable control, thermal protection, and full 300 mA capability-making LD6836TD/27H,125 optimal for sequenced, protected, high-current mobile power rails.
Availability
LD6836TD/27H,125 is available at Aetrix Electronics and suitable for smartphone baseband power, digital camera sensor bias, and portable media player audio DAC applications requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for LD6836TD/27H,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 LD6836 series was developed specifically for space-constrained, battery-powered portable electronics requiring ultra-low-noise, high-accuracy, and thermally robust LDO regulation with flexible enable and disable behavior.
FAQ
What is the maximum input voltage rating for LD6836TD/27H,125?
The LD6836TD/27H,125 supports an absolute maximum input voltage of +6.0 V for transient events up to 4 ms, with recommended continuous operation between 2.3 V and 5.5 V. Exceeding 6.0 V risks permanent damage to the internal PMOS pass transistor and reference circuitry. Always use appropriate input filtering and clamping if interfacing with unregulated sources.
Does LD6836TD/27H,125 require an external output capacitor, and what type is recommended?
Yes, LD6836TD/27H,125 requires an external output capacitor of 0.7–1.0 µF with ESR between 5 mΩ and 500 mΩ for stability. X7R dielectric ceramic capacitors are recommended to maintain performance across −40 °C to +125 °C. Using smaller or higher-ESR capacitors may cause oscillation or degraded transient response in the LD6836TD/27H,125.
How does the high-ohmic disable state of LD6836TD/27H,125 benefit system design?
The high-ohmic (3-state) disable state of LD6836TD/27H,125 isolates the output rail completely-preventing backfeeding, unintended discharge of downstream capacitance, and interference with other powered domains. This enables safe multi-rail sequencing and simplifies power-domain isolation in complex portable SoC architectures using the LD6836TD/27H,125.
What is the thermal resistance (Rth(j-a)) of LD6836TD/27H,125, and how does it affect layout?
The LD6836TD/27H,125 has a typical junction-to-ambient thermal resistance of 125 K/W on a standard two-layer PCB. To achieve this value, all pins-especially GND-must connect to large copper areas; adding thermal vias under the package and connecting to inner ground/power planes significantly lowers effective Rth(j-a). Poor layout can raise junction temperature beyond 125 °C even within rated current.
Can LD6836TD/27H,125 be used with a 1.8 V enable signal from an MCU GPIO?
Yes, LD6836TD/27H,125 accepts 1.8 V as a valid HIGH enable signal since its VIH threshold is specified as ≥1.1 V. A 1.8 V GPIO will reliably activate the regulator, and its VIL threshold (≤0.4 V) ensures clean disable with standard logic LOW. No level-shifter is needed, simplifying interface design for modern low-voltage MCUs driving the LD6836TD/27H,125.
LD6836TD/27H,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 300mA
- Current - Output:
- 300mA
- 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
LD6836TD/27H,125 FAQ
1.How can I place an order for LD6836TD/27H,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836TD/27H,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 LD6836TD/27H,125 reliable?
The price and inventory of LD6836TD/27H,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6836TD/27H,125 is usually 5 days.
3.What payment methods are accepted for LD6836TD/27H,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836TD/27H,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836TD/27H,125?
LD6836TD/27H,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836TD/27H,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 LD6836TD/27H,125?
For technical support, including LD6836TD/27H,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836TD/27H,125 requirements.
6.How does Aetrix verify that LD6836TD/27H,125 is sourced from the original manufacturer or authorized distributors?
All LD6836TD/27H,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 LD6836TD/27H,125 meets industry standards.
7.What is the process for return or replacement of LD6836TD/27H,125?
All LD6836TD/27H,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836TD/27H,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 LD6836TD/27H,125 part is unused and in its original packaging.
Return procedure for LD6836TD/27H,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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