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NXP Semiconductors LD6836TD/33H,125
- Part No.:
- LD6836TD/33H,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6836TD/33H,125.pdf
- Description:
- IC REG LINEAR 3.3V 300MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,690
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Product details
Overview
LD6836TD/33H,125 from NXP Semiconductors is a 3.3 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). It delivers stable power to noise-sensitive analog circuitry in space-constrained portable electronics.
For engineers reviewing the LD6836TD/33H,125 datasheet, LD6836TD/33H,125 pinout, LD6836TD/33H,125 application, or LD6836TD/33H,125 equivalent, this page provides verified electrical specs, SOT753 pin mapping, high-ohmic disable behavior, thermal derating guidance, and validated alternative LDOs for low-noise 3.3 V rail design.
Technical Context
The LD6836TD/33H,125 integrates a precision bandgap reference, error amplifier, and P-channel pass transistor optimized for sub-100 mV dropout operation. Its enable input (active HIGH) controls high-ohmic output state during shutdown-no pull-down transistor-making it suitable for systems requiring voltage rail isolation without discharge path.
Designed for mobile applications with tight thermal budgets, it features over-temperature shutdown (160 °C), current limiting (600 mA short-circuit), and ESD protection (±10 kV HBM). Input voltage range (2.3 V–5.5 V) supports single-cell Li-ion, Li-polymer, or dual-cell alkaline supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 3.3 V ±2 % over −40 °C to +85 °C ambient; enables direct replacement of standard 3.3 V logic rails without external feedback. |
| Dropout voltage | 100 mV typical at 300 mA; allows regulation from 3.4 V input-critical for battery-powered systems near end-of-discharge. |
| 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, RF biasing, and audio signal chains. |
| Quiescent current | 0.1 µA typical in shutdown (VEN ≤ 0.4 V); minimizes battery drain in always-on standby modes. |
| 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 resistance | Rth(j-a) = 125 K/W (SOT753); requires ≥200 mm² copper pour on PCB for full 300 mA continuous operation at +85 °C. |
Pinout & Package
SOT753 plastic surface-mounted package (3.0 mm × 1.7 mm × 1.3 mm), 5-lead, RoHS-compliant, lead-free, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input voltage | Accepts 2.3 V–5.5 V; requires ≥0.7 µF X7R ceramic input capacitor close to pin for stability. |
| 2 (GND) | Supply ground | Primary ground return; must connect directly to low-impedance ground plane to minimize noise coupling. |
| 3 (EN) | Enable input (active HIGH) | Drives internal pass transistor; logic HIGH ≥1.1 V enables regulation; LOW ≤0.4 V disables output to high-ohmic state. |
| 4 (n.c.) | Not connected | No internal connection; must remain unconnected-no routing or soldering permitted. |
| 5 (OUT) | Regulator output voltage | Delivers regulated 3.3 V; requires ≥0.7 µF X7R ceramic output capacitor with ESR 5–500 mΩ for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 100 mV typical at 300 mA enables operation with minimal headroom-extends battery runtime in portable devices. |
| Low-noise regulation | 30 µVRMS output noise ensures clean power for precision analog circuits without additional filtering. |
| High PSRR | 55 dB rejection at 1 kHz reduces ripple from noisy switchers, simplifying multi-rail power architecture. |
| High-ohmic disable | Output floats when disabled-prevents back-powering or unintended discharge of downstream capacitors. |
| Robust protection | Integrated thermal shutdown (160 °C), current limit (600 mA), and ±10 kV HBM ESD protect against real-world stress events. |
Applications
| Smartphone Baseband Power | Digital Camera Sensor Bias |
|---|---|
Use Scenario: Supplies clean 3.3 V to baseband processor I/O banks and memory interfaces in smartphones operating from single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Primary low-noise post-regulator delivering stable voltage during dynamic CPU load transitions and RF transmission bursts. Use Value: 55 dB PSRR prevents GSM/UMTS switching noise from corrupting digital signal integrity; 100 mV dropout extends usable battery range by ~15 minutes at end-of-discharge. | Use Scenario: Powers CMOS image sensor analog front-end and timing controller in compact digital still cameras. IC Role / Device Role / Timing Role: Low-noise voltage source for pixel readout circuitry and clock generation PLLs requiring <50 µV RMS noise floor. Use Value: 30 µVRMS noise ensures <1 LSB error in 12-bit ADC conversion; SOT753 footprint fits tight camera module layouts. |
| Portable Media Player Audio Codec | Personal Navigation Device GPS Front-End |
Use Scenario: Provides regulated 3.3 V to stereo audio codec ICs in MP3 players and Bluetooth headphones. IC Role / Device Role / Timing Role: Dedicated LDO for DAC/ADC analog supplies, decoupled from noisy digital core rails. Use Value: High PSRR and low noise prevent audible hiss or distortion; 0.1 µA shutdown current preserves battery life during playback pause. | Use Scenario: Supplies 3.3 V to GPS RF front-end LNAs and baseband processors in handheld navigation units. IC Role / Device Role / Timing Role: Low-noise, fast-startup regulator enabling rapid GPS signal acquisition after cold start. Use Value: 150 µs startup time reduces time-to-first-fix; 125 K/W thermal resistance allows full 300 mA output in sealed plastic enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P332MR-G | 300 mA, 3.3 V fixed, SOT-23-5; dropout 250 mV @ 300 mA; PSRR 45 dB @ 1 kHz; no enable pin. | Lacks active enable control and high-ohmic disable-requires external MOSFET for rail isolation. | Select when enable functionality is unnecessary and higher dropout is acceptable for cost-sensitive designs. |
| ROHM BD33IC0WEFJ-C | 300 mA, 3.3 V fixed, HTSOP-8; dropout 150 mV @ 300 mA; PSRR 65 dB @ 1 kHz; integrated thermal foldback. | Larger 8-pin package increases board area; superior PSRR but no high-ohmic disable-output pulled low in shutdown. | Select when maximum PSRR is critical and board space permits larger package; avoid where floating output is required. |
Compared with LD6836TD/33H,125, the XC6206P332MR-G sacrifices enable control and dropout performance for lower cost, while the BD33IC0WEFJ-C trades package size and disable behavior for higher PSRR-making LD6836TD/33H,125 optimal for compact, enable-controlled, low-noise 3.3 V rails.
Availability
LD6836TD/33H,125 is available at Aetrix Electronics and suitable for smartphone baseband power, 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/33H,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.
The LD6836 series was designed specifically for ultra-low-noise, high-efficiency power regulation in portable electronics-emphasizing miniaturization, battery longevity, and signal integrity in space- and power-constrained devices.
FAQ
What is the maximum input voltage rating for LD6836TD/33H,125?
The absolute maximum input voltage for LD6836TD/33H,125 is +6.0 V for transient conditions 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 6.0 V-even briefly-risks permanent damage. Always include input transient suppression if used in environments with inductive load switching or hot-plug events.
Does LD6836TD/33H,125 support ceramic output capacitors?
Yes, LD6836TD/33H,125 is fully compatible with ceramic output capacitors. The datasheet specifies a minimum external load capacitance of 0.7 µF with ESR between 5 mΩ and 500 mΩ-easily met by standard X7R or X5R 1 µF ceramics. Using such capacitors ensures stability, fast transient response, and minimal board area, aligning with the device's SOT753 form factor.
What happens to the output pin of LD6836TD/33H,125 when the EN pin is driven LOW?
When the EN pin of LD6836TD/33H,125 is driven LOW (≤0.4 V), the device enters shutdown mode and the OUT pin transitions to a high-ohmic (tri-state) condition-effectively disconnecting the output from the internal pass transistor. This prevents back-powering or discharging of downstream circuitry, distinguishing it from "P" variants that actively pull down the output.
Can LD6836TD/33H,125 be used with a 1.8 V enable signal?
Yes, LD6836TD/33H,125 can be directly controlled by a 1.8 V GPIO. Its enable input has a guaranteed VIH(min) of 1.1 V and VIL(max) of 0.4 V, making it compatible with 1.8 V logic families without level translation. A 1.8 V HIGH signal robustly exceeds the 1.1 V threshold, ensuring reliable turn-on across temperature and process variation.
Is LD6836TD/33H,125 RoHS-compliant and halogen-free?
Yes, LD6836TD/33H,125 is fully RoHS-compliant and halogen-free (including antimony-free), meeting NXP's "dark green" environmental standard. This compliance is confirmed in Section 1.2 of the datasheet and applies to both material content and manufacturing processes-ensuring suitability for global consumer electronics markets with strict environmental regulations.
LD6836TD/33H,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):
- 0.2V @ 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/33H,125 FAQ
1.How can I place an order for LD6836TD/33H,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836TD/33H,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/33H,125 reliable?
The price and inventory of LD6836TD/33H,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/33H,125 is usually 5 days.
3.What payment methods are accepted for LD6836TD/33H,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836TD/33H,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836TD/33H,125?
LD6836TD/33H,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836TD/33H,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/33H,125?
For technical support, including LD6836TD/33H,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836TD/33H,125 requirements.
6.How does Aetrix verify that LD6836TD/33H,125 is sourced from the original manufacturer or authorized distributors?
All LD6836TD/33H,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/33H,125 meets industry standards.
7.What is the process for return or replacement of LD6836TD/33H,125?
All LD6836TD/33H,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836TD/33H,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/33H,125 part is unused and in its original packaging.
Return procedure for LD6836TD/33H,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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