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NXP Semiconductors LD6836TD/22P,125
- Part No.:
- LD6836TD/22P,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6836TD/22P,125.pdf
- Description:
- IC REG LINEAR 2.2V 300MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,667
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Product details
Overview
LD6836TD/22P,125 from NXP Semiconductors is a 2.2 V fixed-output, 300 mA ultra-low-dropout linear regulator in SOT753 package with auto-discharge (pull-down) functionality, 100 mV typical dropout at full load, 30 µV RMS output noise, and 55 dB PSRR at 1 kHz - deployed in mobile phone handsets and portable media players for clean, stable low-voltage rail generation.
For engineers reviewing the LD6836TD/22P,125 datasheet, LD6836TD/22P,125 pinout, LD6836TD/22P,125 application, or LD6836TD/22P,125 equivalent, key selection criteria include its pull-down output behavior during disable, thermal shutdown threshold of 160 °C, 0.1 µA shutdown quiescent current, and compatibility with 0.7–1.0 µF X7R ceramic output capacitors.
Technical Context
The LD6836TD/22P,125 integrates a precision voltage reference, error amplifier, and PMOS pass transistor optimized for sub-100 mV dropout operation across its 2.3–5.5 V input range. Its enable input (active HIGH, VIH ≥1.1 V) controls both regulation and the internal 100 Ω pull-down switch that actively discharges the output node during disable.
This device implements over-temperature protection (160 °C shutdown with 20 K hysteresis) and output current limiting (600 mA short-circuit current), with thermal resistance Rth(j-a) = 125 K/W on standard two-layer PCBs - enabling reliable operation in compact, thermally constrained portable designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 2.2 V ±3 % over −40 °C to +85 °C ambient - ensures stable core logic supply for 2.2 V I/O domains. |
| Dropout voltage | 100 mV typical at 300 mA - enables operation down to VIN = 2.3 V while maintaining regulated 2.2 V output. |
| Quiescent current | 0.1 µA typical in shutdown (VEN ≤ 0.4 V) - minimizes battery drain in always-on standby modes. |
| 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) - supports noise-sensitive analog circuits like ADC references or RF bias rails. |
| Enable threshold | VIL ≤ 0.4 V / VIH ≥ 1.1 V - compatible with 1.8 V and 3.3 V GPIO logic without level-shifting. |
| Thermal shutdown | 160 °C with 20 K hysteresis - prevents thermal runaway during sustained overload or poor PCB heatsinking. |
Pinout & Package
SOT753 plastic surface-mounted package (3.1 mm × 2.7 mm × 1.1 mm), 5-pin, lead-free and RoHS-compliant, compatible with SC-74A footprint and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input | Accepts 2.3–5.5 V unregulated supply; requires local 1 µF ceramic decoupling capacitor. |
| 2 (GND) | Supply ground | Primary return path for input/output currents; must connect to low-impedance ground plane. |
| 3 (EN) | Enable control | Active-HIGH digital input; drives internal pass transistor and pull-down switch when >1.1 V. |
| 4 (n.c.) | No connection | Internally unconnected; no external tie required - leave floating or grounded per layout best practice. |
| 5 (OUT) | Regulated output | Delivers 2.2 V at up to 300 mA; includes integrated 100 Ω pull-down transistor for fast discharge when disabled. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Integrated 100 Ω pull-down transistor on OUT pin enables rapid output discharge (<300 µs) during disable - critical for power sequencing in multi-rail systems. |
| Low-noise regulation | 30 µV RMS output noise (10 Hz–100 kHz) with 1 µF X7R output capacitor - eliminates need for additional LC filtering in sensitive analog signal chains. |
| High PSRR at audio frequencies | 55 dB rejection at 1 kHz - effectively isolates downstream analog circuitry from ripple generated by buck converters operating at ~500 kHz–2 MHz. |
| Ultra-low shutdown current | 0.1 µA typical quiescent current in disabled state - extends battery life in IoT sensors and wearable devices with long sleep intervals. |
| Robust ESD protection | 10 kV HBM ESD rating on all pins - reduces need for external transient protection in handheld consumer electronics. |
Applications
| Smartphone Baseband Power | Digital Still Camera Sensor Bias |
|---|---|
Use Scenario: Supplying 2.2 V bias to baseband processor I/O banks in dual-SIM smartphones where input rail varies between 3.0–4.2 V from Li-ion battery. IC Role / Device Role / Timing Role: Primary low-noise post-regulator delivering clean, sequenced 2.2 V rail synchronized with AP/BB enable signals. Use Value: Pull-down output ensures fast discharge of baseband I/O capacitance during mode transitions, preventing latch-up or false wake events. | Use Scenario: Providing stable 2.2 V analog supply to CMOS image sensor analog front-end in compact digital cameras. IC Role / Device Role / Timing Role: Low-noise LDO generating reference-sensitive analog supply independent of noisy digital core rails. Use Value: 30 µV RMS noise and 55 dB PSRR maintain SNR integrity in 12-bit+ image capture, avoiding visible banding artifacts. |
| Portable Media Player Audio Codec | Bluetooth Headset RF Front-End |
Use Scenario: Powering DAC and headphone amplifier stages in flash-based MP3 players with 3.7 V nominal battery input. IC Role / Device Role / Timing Role: Dedicated low-noise LDO supplying analog audio chain, enabled only during playback to minimize idle current. Use Value: 0.1 µA shutdown current extends playback time by >15 % in intermittent-use scenarios versus standard LDOs. | Use Scenario: Delivering 2.2 V bias to Bluetooth RF transceiver's PA and LNA stages in true wireless stereo earbuds. IC Role / Device Role / Timing Role: Compact, thermally efficient LDO placed adjacent to RF IC to minimize trace inductance and noise coupling. Use Value: 125 K/W thermal resistance and 160 °C thermal shutdown allow safe operation in sealed, high-density earbud enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-2202E/MB | 2.2 V fixed, 250 mA, 600 mV dropout, no auto-discharge, 65 dB PSRR at 1 kHz | Lacks pull-down output; higher dropout limits usable input range in low-VIN battery applications | Select when lowest possible cost and higher PSRR outweigh need for fast discharge and ultra-low dropout. |
| Torex XC6219B222MR-G | 2.2 V fixed, 300 mA, 160 mV dropout, no auto-discharge, 45 dB PSRR at 1 kHz | Higher dropout and lower PSRR; requires larger output capacitor (≥2.2 µF) for stability | Choose for space-constrained designs where SOT-23-5 footprint is acceptable but WLCSP is not feasible. |
Compared with MCP1703T-2202E/MB and XC6219B222MR-G, LD6836TD/22P,125 uniquely combines 100 mV dropout, 0.1 µA shutdown current, and integrated pull-down - making it optimal for battery-powered systems requiring tight voltage margins, aggressive power sequencing, and minimal quiescent loss.
Availability
LD6836TD/22P,125 is available at Aetrix Electronics and suitable for smartphone baseband power, digital camera sensor bias, portable media player audio codec, and Bluetooth headset RF front-end applications requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LD6836TD/22P,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, RF, and embedded security.
The LD6836 series was designed specifically for ultra-compact, low-noise, high-efficiency power regulation in portable battery-operated devices - emphasizing miniaturization (WLCSP/SOT753), low quiescent current, and robust protection features.
FAQ
What is the output voltage tolerance of LD6836TD/22P,125 over temperature?
The LD6836TD/22P,125 maintains output voltage within ±3 % over the full −40 °C to +85 °C ambient operating range, and ±0.5 % at +25 °C. This accuracy is achieved via laser-trimmed internal resistive feedback and a stable bandgap reference, ensuring reliable operation for 2.2 V logic interfaces without external trimming.
Does LD6836TD/22P,125 require an input capacitor?
Yes, LD6836TD/22P,125 recommends a 1 µF X7R ceramic input capacitor placed close to the IN and GND pins. While not strictly mandatory for stability, this capacitor suppresses high-frequency noise from upstream sources and prevents voltage droop during load transients - improving overall system immunity and meeting EMC requirements.
How does the auto-discharge function of LD6836TD/22P,125 operate?
When the EN pin is driven LOW, LD6836TD/22P,125 activates an internal 100 Ω NMOS pull-down transistor between OUT and GND, discharging output capacitance to 5 % of nominal voltage in under 300 µs (with 1 µF CL). This eliminates floating outputs and prevents unintended wake-up or latch-up in multi-rail power systems.
What is the maximum allowable input voltage for LD6836TD/22P,125?
The absolute maximum input voltage for LD6836TD/22P,125 is +6.0 V for transient conditions up to 4 ms. For continuous operation, the recommended input range is 2.3 V to 5.5 V. Exceeding 6.0 V risks permanent damage due to junction breakdown, even if duration is brief.
Can LD6836TD/22P,125 be used with tantalum output capacitors?
No - LD6836TD/22P,125 is optimized for ceramic capacitors with 5–500 mΩ ESR. Tantalum capacitors typically exhibit higher ESR and risk instability or oscillation. The datasheet specifies 0.7–1.0 µF X7R ceramics; using tantalum may cause startup failure, overshoot, or thermal shutdown under load.
LD6836TD/22P,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):
- 2.2V
- 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/22P,125 FAQ
1.How can I place an order for LD6836TD/22P,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836TD/22P,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/22P,125 reliable?
The price and inventory of LD6836TD/22P,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/22P,125 is usually 5 days.
3.What payment methods are accepted for LD6836TD/22P,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836TD/22P,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836TD/22P,125?
LD6836TD/22P,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836TD/22P,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/22P,125?
For technical support, including LD6836TD/22P,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836TD/22P,125 requirements.
6.How does Aetrix verify that LD6836TD/22P,125 is sourced from the original manufacturer or authorized distributors?
All LD6836TD/22P,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/22P,125 meets industry standards.
7.What is the process for return or replacement of LD6836TD/22P,125?
All LD6836TD/22P,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836TD/22P,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/22P,125 part is unused and in its original packaging.
Return procedure for LD6836TD/22P,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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