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NXP Semiconductors LD6836TD/16P,125
- Part No.:
- LD6836TD/16P,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6836TD/16P,125.pdf
- Description:
- IC REG LINEAR 1.6V 300MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:65,998
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Product details
Overview
LD6836TD/16P,125 from NXP Semiconductors is a 1.6 V fixed-output, 300 mA ultra-low-dropout linear regulator in SOT753 package with auto-discharge (pull-down) functionality. It operates from 2.3 V to 5.5 V input, delivers 90–100 mV dropout at full load, and features 30 µVRMS output noise and 55 dB PSRR at 1 kHz - optimized for power-sensitive portable electronics.
For engineers reviewing the LD6836TD/16P,125 datasheet, LD6836TD/16P,125 pinout, LD6836TD/16P,125 application, or LD6836TD/16P,125 equivalent, this page provides verified electrical specs, SOT753 pin mapping, real-world use cases in mobile interfaces, and validated alternative LDOs with functional and application-level distinctions.
Technical Context
The LD6836TD/16P,125 integrates a precision voltage reference, thermal shutdown, overcurrent protection, and an active pull-down transistor on the output pin (EN = LOW), enabling rapid discharge of downstream capacitance. Its internal pass element is optimized for low quiescent current (0.1 µA in shutdown) and stable operation with 0.7–1.0 µF ceramic output capacitors.
This variant belongs to the LD6836x/xxP subfamily, distinguishing it from high-ohmic (H) versions by its 100 Ω typical pull-down resistance and 300 µs shutdown time. It supports ambient temperatures from −40 °C to +85 °C and junction temperatures up to +125 °C, with Rth(j-a) = 125 K/W on standard PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.6 V ±3% over −30 °C to +85 °C - ensures stable core supply for low-voltage logic and RF biasing. |
| Dropout Voltage | 100 mV (typ) at 300 mA - enables regulation from 1.7 V input, maximizing battery runtime in single-cell Li-ion or Li-poly systems. |
| Quiescent Current | 0.1 µA (typ) in shutdown mode - critical for maintaining ultra-low system standby power in always-on sensors or IoT endpoints. |
| PSRR | 55 dB at 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding mixed-signal analog circuits. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz) - preserves signal integrity in ADC reference rails and audio codec power domains. |
| Enable Threshold | VIH = 1.1 V min, VIL = 0.4 V max - compatible with 1.8 V and 3.3 V GPIOs without level-shifting. |
| Thermal Protection | Shuts down at 160 °C with 20 K hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
SOT753 plastic surface-mounted package (5-lead, SC-74A compatible), 3.0 mm × 1.7 mm × 1.3 mm body size, lead pitch 0.95 mm, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input voltage | Accepts 2.3–5.5 V unregulated supply; requires local 0.7–1.0 µF ceramic decoupling capacitor. |
| 2 (GND) | Supply ground | Primary return path for input/output currents; must connect to low-impedance ground plane for noise control. |
| 3 (EN) | Enable input (active HIGH) | Drives internal pass transistor; logic HIGH ≥1.1 V enables regulation; logic LOW ≤0.4 V activates auto-discharge. |
| 4 (n.c.) | Not connected | No internal connection; must remain unconnected and un-bonded on PCB layout. |
| 5 (OUT) | Regulator output voltage | Delivers regulated 1.6 V; includes integrated 100 Ω pull-down switch when EN = LOW for fast discharge. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Integrated 100 Ω pull-down transistor on OUT pin enables <300 µs discharge of 1 µF load - eliminates residual voltage in power sequencing and sleep-mode transitions. |
| Low-noise regulation | 30 µVRMS broadband noise supports high-resolution ADCs and low-phase-noise RF synthesizers without external filtering. |
| High PSRR at low frequency | 55 dB rejection at 1 kHz allows co-location with noisy buck converters in compact space-constrained designs. |
| Ultra-low shutdown current | 0.1 µA typical IQ in disable state extends battery life in intermittently powered devices like wearables and remote sensors. |
| Robust ESD protection | 10 kV HBM rating protects against handling damage during assembly and field operation without external TVS diodes. |
Applications
| Smartphone Core Logic Supply | Digital Still Camera Sensor Bias |
|---|---|
Use Scenario: Powering ARM Cortex-M4 core and SRAM in smartphone application processors during active and deep-sleep states. IC Role / Device Role / Timing Role: Primary 1.6 V LDO delivering clean, sequenced power with fast enable/disable timing and auto-discharge to meet SoC power-state transition requirements. Use Value: Enables <300 µs power-down discharge and 150 µs startup, meeting tight processor wake-up latency targets while minimizing leakage in standby. | Use Scenario: Providing stable bias voltage to CMOS image sensor analog front-end and column ADC drivers. IC Role / Device Role / Timing Role: Low-noise, low-drift 1.6 V supply isolating sensitive analog circuitry from digital switching noise on shared PCB planes. Use Value: 30 µVRMS noise and 55 dB PSRR prevent fixed-pattern noise and SNR degradation in 12-bit+ imaging pipelines. |
| Portable Media Player Audio Codec | Personal Navigation Device GPS Front-End |
Use Scenario: Supplying DAC and headphone amplifier stages in battery-powered MP3 players with dynamic volume control. IC Role / Device Role / Timing Role: Fixed-output LDO with minimal load regulation error (0.0025 %/mA) ensuring consistent audio output level across varying battery voltage and load current. Use Value: Maintains <±0.5% output accuracy from 1 mA to 300 mA, eliminating audible distortion during playback peaks. | Use Scenario: Powering GPS/GNSS RF front-end LNA and downconverter ICs in handheld navigation units. IC Role / Device Role / Timing Role: Ultra-low-noise 1.6 V rail decoupling RF signal chain from digital baseband noise, supporting −160 dBm sensitivity. Use Value: 30 µVRMS noise floor avoids reciprocal mixing and preserves carrier-to-noise ratio in weak-signal acquisition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LD6836TD/16H,125 | Same package and output voltage, but high-ohmic (3-state) output when disabled - no auto-discharge. | Used where output floating is required during shutdown (e.g., isolated domain retention), not fast discharge. | Select LD6836TD/16H,125 only if system design explicitly requires tri-state behavior instead of active pull-down. |
| MCP1700T-1602E/TT | 1.6 V, 250 mA, SOT-23-5; higher dropout (175 mV @ 250 mA); no enable pin or auto-discharge; 17 µVRMS noise. | Targeted at cost-sensitive, lower-current applications without sequencing or fast discharge needs. | Choose MCP1700T-1602E/TT only for simpler, non-sequenced 1.6 V supplies below 250 mA with relaxed noise and timing requirements. |
Compared with LD6836TD/16H,125, the LD6836TD/16P,125 adds essential auto-discharge for power sequencing compliance; versus MCP1700T-1602E/TT, it delivers higher current, lower dropout, integrated enable control, and superior PSRR - making it suitable for advanced portable SoC power domains.
Availability
LD6836TD/16P,125 is available at Aetrix Electronics and suitable for smartphone core logic, digital camera sensor bias, portable media player audio codecs, and personal navigation device GPS front-ends requiring stable component supply with guaranteed long-term availability.
Supply support for LD6836TD/16P,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 specializing in secure connectivity solutions for automotive, industrial, and consumer electronics, with leadership in power management and analog interface ICs.
The LD6836 series was designed specifically for ultra-low-noise, high-accuracy power delivery in miniaturized portable devices - emphasizing dropout performance, fast transient response, and integrated auto-discharge for modern power sequencing architectures.
FAQ
What is the nominal output voltage of the LD6836TD/16P,125?
The LD6836TD/16P,125 has a fixed nominal output voltage of 1.6 V, with initial accuracy of ±0.5% at +25 °C and total variation of ±3% across −30 °C to +85 °C ambient temperature. This value is laser-marked as "9EP" on the SOT753 package per NXP's marking table, confirming its 1.6 V P-version configuration.
Does the LD6836TD/16P,125 include an enable pin, and what are its logic thresholds?
Yes, the LD6836TD/16P,125 includes an active-HIGH enable pin (pin 3). It asserts regulation when voltage exceeds 1.1 V (VIH min) and disables with auto-discharge when voltage falls below 0.4 V (VIL max). These thresholds are independent of input voltage and compatible with 1.8 V and 3.3 V microcontroller GPIOs without level translation.
How does the auto-discharge function work in the LD6836TD/16P,125?
When the EN pin is driven LOW, the LD6836TD/16P,125 activates an internal 100 Ω pull-down transistor between OUT and GND, discharging attached capacitance to 5% of nominal voltage in ≤300 µs (with 1 µF load). This eliminates residual voltage that could cause latch-up or violate power sequencing in multi-rail SoC systems.
What is the maximum continuous output current rating for the LD6836TD/16P,125?
The LD6836TD/16P,125 is rated for continuous output current up to 300 mA under recommended operating conditions (Tamb ≤ +85 °C, proper PCB thermal design). Peak current capability reaches 350 mA for short durations, and short-circuit current is limited to 600 mA by internal protection circuitry.
Which external capacitors are required for stable operation of the LD6836TD/16P,125?
The LD6836TD/16P,125 requires a minimum 0.7 µF X7R ceramic capacitor on the output (CLext), with recommended value of 1.0 µF and ESR between 5 mΩ and 500 mΩ. An input capacitor (Ciext) of same value is also recommended. These values ensure stability, optimal PSRR, and controlled startup/shutdown transients per NXP's application guidelines.
LD6836TD/16P,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):
- 1.6V
- 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/16P,125 FAQ
1.How can I place an order for LD6836TD/16P,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836TD/16P,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/16P,125 reliable?
The price and inventory of LD6836TD/16P,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/16P,125 is usually 5 days.
3.What payment methods are accepted for LD6836TD/16P,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836TD/16P,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836TD/16P,125?
LD6836TD/16P,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836TD/16P,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/16P,125?
For technical support, including LD6836TD/16P,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836TD/16P,125 requirements.
6.How does Aetrix verify that LD6836TD/16P,125 is sourced from the original manufacturer or authorized distributors?
All LD6836TD/16P,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/16P,125 meets industry standards.
7.What is the process for return or replacement of LD6836TD/16P,125?
All LD6836TD/16P,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836TD/16P,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/16P,125 part is unused and in its original packaging.
Return procedure for LD6836TD/16P,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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