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NXP Semiconductors LD6836TD/36P,125
- Part No.:
- LD6836TD/36P,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6836TD/36P,125.pdf
- Description:
- IC REG LINEAR 3.6V 300MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,708
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Product details
Overview
LD6836TD/36P,125 from NXP Semiconductors is a 3.6 V fixed-output, 300 mA ultra-low-dropout linear regulator in SOT753 package, featuring 100 mV typical dropout at full load, 30 µV RMS output noise (10 Hz–100 kHz), and active-HIGH enable with auto-discharge (pull-down) functionality. It operates from 2.3 V to 5.5 V input and delivers stable power to noise-sensitive analog rails in portable electronics.
For engineers reviewing the LD6836TD/36P,125 datasheet, LD6836TD/36P,125 pinout, LD6836TD/36P,125 application, or LD6836TD/36P,125 equivalent, key selection criteria include dropout voltage under 300 mA load, PSRR of −55 dB at 1 kHz, shutdown quiescent current ≤1 µA, thermal protection at 160 °C, and compatibility with 0.7–1.0 µF X7R output capacitors.
Technical Context
The LD6836TD/36P,125 integrates a PMOS pass transistor with internal reference and error amplifier, enabling operation down to 90 mV headroom. Its auto-discharge function uses an integrated 100 Ω pull-down switch on the OUT pin during disable, ensuring rapid output discharge for system-level power sequencing.
Designed for mobile applications, it features over-temperature shutdown with 20 K hysteresis, current limiting at 600 mA, and ESD robustness up to ±10 kV HBM. The device maintains ±0.5 % output accuracy at +25 °C and ±3 % over −30 °C to +85 °C ambient for 3.6 V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.6 V ±3 % over −30 °C to +85 °C - ensures stable core voltage for 3.3 V–3.6 V logic interfaces. |
| Dropout Voltage | 100 mV typical at 300 mA - enables operation from 3.7 V Li-ion battery down to 3.7 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 µV RMS (10 Hz–100 kHz) - meets low-noise requirements for RF biasing and precision ADC reference supplies. |
| Quiescent Current | 0.1 µA typical in shutdown - minimizes battery drain in always-on standby modes. |
| Enable Threshold | VIL ≤0.4 V, VIH ≥1.1 V - compatible with 1.8 V and 3.3 V GPIOs without level-shifting. |
| Thermal Resistance | Rth(j-a) = 125 K/W - supports continuous 300 mA operation on standard 2-layer PCB with adequate copper pour. |
Pinout & Package
SOT753 plastic surface-mounted package (5-lead, SC-74A compatible), dimensions 3.0 mm × 1.7 mm × 1.3 mm, with exposed pad not present. RoHS-compliant, halogen-free, and Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input voltage | Accepts 2.3–5.5 V supply; requires ≥0.7 µF input capacitor for stability and transient response. |
| 2 (GND) | Supply ground | Primary return path for input/output currents; must connect directly to low-impedance ground plane. |
| 3 (EN) | Enable input (active HIGH) | Drives internal control circuitry; <0.4 V disables regulator and activates pull-down switch on OUT. |
| 4 (n.c.) | No connection | Internally unconnected; must remain floating or tied to GND per layout best practice - no external connection required. |
| 5 (OUT) | Regulator output voltage | Delivers regulated 3.6 V; includes integrated 100 Ω pull-down transistor for auto-discharge when EN = LOW. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Integrated 100 Ω pull-down switch on OUT pin enables fast discharge (<300 µs to 10 % VOUT) during shutdown - critical for multi-rail sequencing in smartphones. |
| Low-noise regulation | 30 µV RMS output noise over 10 Hz–100 kHz supports clean power for RF transceivers and high-resolution audio codecs. |
| High PSRR at low frequency | −55 dB rejection at 1 kHz allows co-location with noisy DC-DC converters without additional filtering. |
| Robust thermal protection | 160 °C junction shutdown with 20 K hysteresis prevents latch-up during sustained overload or poor heatsinking. |
| ESD-hardened design | ±10 kV HBM rating eliminates need for external ESD protection in handheld device front-end circuits. |
Applications
| Smartphone Core Power | Digital Camera Sensor Bias |
|---|---|
Use Scenario: Supplying 3.6 V to application processor I/O banks and memory interfaces during active mode and deep-sleep states. IC Role / Device Role / Timing Role: Primary low-noise post-regulator delivering stable voltage with fast enable/disable timing (150 µs startup, 300 µs shutdown). Use Value: Enables reliable boot and wake-from-sleep by maintaining tight output accuracy (±3 %) across temperature and load while minimizing standby current. | Use Scenario: Providing clean 3.6 V bias to CMOS image sensor analog front-end and ADC reference circuitry. IC Role / Device Role / Timing Role: Low-noise LDO with high PSRR isolating sensitive analog circuitry from digital switching noise. Use Value: Reduces image noise floor by suppressing 30 µV RMS output noise and rejecting >55 dB of ripple from shared power rails. |
| Portable Media Player Audio | Personal Navigation Device GPS Front-End |
Use Scenario: Powering DAC and headphone amplifier stages requiring ultra-low noise and minimal voltage drift. IC Role / Device Role / Timing Role: Fixed-output LDO with 30 µV RMS noise and ±0.5 % room-temperature accuracy. Use Value: Preserves audio signal integrity by eliminating audible hiss and preventing distortion due to supply modulation. | Use Scenario: Supplying 3.6 V to GPS RF front-end LNA and mixer stages in battery-powered navigation units. IC Role / Device Role / Timing Role: High-PSRR, low-dropout regulator operating from single-cell Li-ion (3.0–4.2 V) with fast transient response. Use Value: Maintains GPS signal acquisition sensitivity by rejecting switching noise from PMU and preserving SNR in RF path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0536PDQNR | 300 mA, 3.6 V fixed, 170 mV dropout (typ), 25 µV RMS noise, SOT-23-5 package | Lacks auto-discharge; requires external pull-down for output discharge | Select when lower noise is prioritized and auto-discharge is handled externally. |
| MCP1826T-3602E/DB | 300 mA, 3.6 V fixed, 220 mV dropout (typ), 45 µV RMS noise, SOT-23-5 package | No enable pin; always-on operation only | Select for cost-sensitive always-on subsystems where enable control and auto-discharge are unnecessary. |
Compared with TPS7A0536PDQNR and MCP1826T-3602E/DB, LD6836TD/36P,125 uniquely combines 100 mV dropout, 30 µV noise, and integrated auto-discharge in a footprint-compatible SOT753 package - simplifying power sequencing and extending battery life in portable designs.
Availability
LD6836TD/36P,125 is available at Aetrix Electronics and suitable for smartphone core power, digital camera sensor bias, portable media player audio, and personal navigation device GPS front-end applications requiring stable component supply, long-term lifecycle support, and automotive-grade reliability screening.
Supply support for LD6836TD/36P,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 applications, with leadership in power management and RF technologies.
The LD6836 series is part of NXP's ultra-low-dropout regulator product line, designed specifically for space-constrained portable electronics requiring low noise, fast enable/disable timing, and integrated auto-discharge for safe multi-rail power sequencing.
FAQ
What is the maximum input voltage rating for LD6836TD/36P,125?
The absolute maximum input voltage for LD6836TD/36P,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 risks permanent damage. This rating is verified per IEC 60134 absolute maximum conditions and applies regardless of output load or ambient temperature.
Does LD6836TD/36P,125 require an external pull-down resistor for output discharge?
No - LD6836TD/36P,125 integrates a 100 Ω pull-down transistor on the OUT pin activated when EN is LOW, providing auto-discharge functionality. No external resistor is needed, reducing BOM count and PCB area versus alternatives like TPS7A0536PDQNR.
What output capacitor value is required for stable operation of LD6836TD/36P,125?
LD6836TD/36P,125 requires a minimum 0.7 µF X7R ceramic capacitor on the OUT pin, with recommended value of 1.0 µF and ESR between 5 mΩ and 500 mΩ. Using capacitors outside this range may cause instability or degraded transient response.
Is LD6836TD/36P,125 compatible with lead-free reflow soldering processes?
Yes - LD6836TD/36P,125 is qualified for lead-free reflow per J-STD-020C, with peak temperature tolerance up to 260 °C. Its SOT753 package falls into the <2.5 mm thickness / <350 mm³ volume category, requiring a peak reflow temperature of 235 °C for SnPb and 260 °C for lead-free profiles.
What is the thermal shutdown behavior of LD6836TD/36P,125?
LD6836TD/36P,125 shuts down at 160 °C junction temperature and remains off until junction temperature drops by 20 K (to ~140 °C) due to built-in hysteresis. This prevents thermal cycling and ensures safe recovery after overload or poor heatsinking conditions.
LD6836TD/36P,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):
- 0.2V @ 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/36P,125 FAQ
1.How can I place an order for LD6836TD/36P,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836TD/36P,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/36P,125 reliable?
The price and inventory of LD6836TD/36P,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/36P,125 is usually 5 days.
3.What payment methods are accepted for LD6836TD/36P,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836TD/36P,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836TD/36P,125?
LD6836TD/36P,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836TD/36P,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/36P,125?
For technical support, including LD6836TD/36P,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836TD/36P,125 requirements.
6.How does Aetrix verify that LD6836TD/36P,125 is sourced from the original manufacturer or authorized distributors?
All LD6836TD/36P,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/36P,125 meets industry standards.
7.What is the process for return or replacement of LD6836TD/36P,125?
All LD6836TD/36P,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836TD/36P,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/36P,125 part is unused and in its original packaging.
Return procedure for LD6836TD/36P,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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