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NXP Semiconductors LD6836TD/23P,125
- Part No.:
- LD6836TD/23P,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6836TD/23P,125.pdf
- Description:
- IC REG LINEAR 2.3V 300MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:35,841
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Product details
Overview
LD6836TD/23P,125 from NXP Semiconductors is a 2.3 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 90–200 mV dropout at full load, features 30 µVRMS output noise (10 Hz–100 kHz), and integrates over-temperature and current limiting protection. It serves as a precision local power rail for low-voltage digital cores in portable consumer devices.
For engineers reviewing the LD6836TD/23P,125 datasheet, LD6836TD/23P,125 pinout, LD6836TD/23P,125 application, or LD6836TD/23P,125 equivalent, this page provides verified electrical specs, validated SOT753 pin mapping, confirmed auto-discharge behavior, real-world application context for mobile SoC power domains, and two technically documented alternative parts with explicit functional and packaging differences.
Technical Context
The LD6836TD/23P,125 implements a PMOS pass transistor architecture enabling ultra-low dropout voltage and stable operation with only 0.7 µF minimum output capacitance. Its active-HIGH enable input (VIH ≥ 1.1 V) controls a dedicated internal pull-down switch that actively discharges the output node during disable-critical for fast power-state transitions in battery-powered systems.
This variant belongs to the LD6836x/xxP subfamily, distinguishing it from high-ohmic (H) versions by its integrated 100 Ω pull-down resistance and 300 µs typical shutdown time. It maintains 55 dB PSRR at 1 kHz and achieves ±0.5% output accuracy at 25 °C with ±3% total variation across −40 °C to +85 °C ambient range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.3 V ±3% over −40 °C to +85 °C - ensures stable core supply for 2.3 V I/O domains without external feedback. |
| Dropout Voltage | 100 mV (typical) at 300 mA - enables regulation from 2.4 V input, maximizing battery runtime in single-cell Li-ion systems. |
| Quiescent Current | 0.1 µA (typical) in shutdown mode - minimizes leakage current during deep sleep states in always-on subsystems. |
| 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) - supports noise-sensitive analog blocks like ADCs or RF front-ends powered from same rail. |
| Enable Threshold | VIH = 1.1 V min, VIL = 0.4 V max - compatible with 1.8 V and 3.3 V GPIO logic without level-shifting. |
| Thermal Resistance | Rth(j-a) = 125 K/W - requires minimal PCB copper area for thermal management in compact layouts. |
Pinout & Package
SOT753 plastic surface-mounted package (5-lead, SC-74A compatible), dimensions 3.0 mm × 1.7 mm × 1.3 mm, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input voltage | Accepts 2.3–5.5 V unregulated input; requires ≥0.7 µF ceramic input capacitor for stability. |
| 2 (GND) | Supply ground | Primary reference for all internal circuitry; must connect to low-impedance system ground plane. |
| 3 (EN) | Device enable input (active HIGH) | Drives internal pass transistor and pull-down switch; logic HIGH ≥1.1 V enables regulation and disables discharge. |
| 4 (n.c.) | Not connected | No internal connection; must remain floating or tied to GND per layout best practice-no routing required. |
| 5 (OUT) | Regulator output voltage | Delivers regulated 2.3 V; includes integrated 100 Ω pull-down to GND when EN = LOW for rapid output discharge. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Integrated 100 Ω pull-down transistor actively discharges output to <10% VOUT within 300 µs after EN deactivation-enables fast power sequencing in multi-rail systems. |
| Ultra-low noise output | 30 µVRMS noise (10 Hz–100 kHz) with 1 µF X7R ceramic output capacitor-meets stringent noise requirements for camera ISPs and audio codecs. |
| Low quiescent current | 70–100 µA operating IQ and 0.1 µA shutdown IQ-extends battery life in standby modes of wearables and IoT sensors. |
| Robust protection suite | Integrated over-temperature shutdown (160 °C trigger, 20 K hysteresis) and current limiting (600 mA short-circuit limit)-eliminates need for external protection components. |
| ESD resilience | 10 kV HBM ESD rating on all pins-reduces susceptibility to handling damage during assembly and field operation. |
Applications
| Smartphone Application Processor Core Rail | Digital Still Camera Image Signal Processor (ISP) |
|---|---|
Use Scenario: Powers 2.3 V I/O domain of application processor during active and low-power states in smartphones. IC Role / Device Role / Timing Role: Local LDO delivering clean, sequenced, and rapidly discharged 2.3 V supply synchronized with AP power states. Use Value: Auto-discharge ensures safe voltage ramp-down before AP enters deep sleep, preventing latch-up or data corruption during state transitions. |
Use Scenario: Supplies low-noise 2.3 V bias to high-resolution image signal processor in compact digital cameras. IC Role / Device Role / Timing Role: Precision voltage regulator maintaining tight DC accuracy and ultra-low RMS noise for analog pixel processing paths. Use Value: 30 µVRMS noise floor directly reduces fixed-pattern noise in raw image data, improving SNR without post-processing overhead. |
| Portable Media Player Audio DAC Supply | Personal Navigation Device GPS Baseband IC |
Use Scenario: Provides dedicated 2.3 V rail to stereo audio DAC in battery-operated media players. IC Role / Device Role / Timing Role: Low-noise, low-dropout regulator decoupling DAC from noisy system power rails. Use Value: 55 dB PSRR at 1 kHz attenuates ripple from shared buck converter, lowering audible hiss and THD+N in headphone output. |
Use Scenario: Supplies 2.3 V core voltage to GPS baseband IC requiring fast wake/sleep cycling in handheld navigation units. IC Role / Device Role / Timing Role: Sequenced power rail with sub-millisecond startup (150 µs) and controlled shutdown (300 µs). Use Value: Enables GPS cold-start acquisition within 1 s by guaranteeing stable 2.3 V within 150 µs of enable assertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LD6836TD/23H,125 | Same SOT753 package and 2.3 V output, but high-ohmic (3-state) output during disable-no auto-discharge. | Used where output must float during shutdown (e.g., shared bus lines), not where rapid discharge is required. | Select LD6836TD/23H,125 only if system design explicitly avoids pulling OUT low during disable. |
| NCP1117ST23T3G | TO-220/SOT-223 package, 1 A rating, 1.2 V dropout at 800 mA, no enable or auto-discharge; higher quiescent current (6 mA). | Targeted at higher-current, non-sequenced industrial rails-not suitable for space-constrained portable designs requiring fast state transitions. | Choose NCP1117ST23T3G only for cost-sensitive, non-portable applications needing >300 mA and no sequencing control. |
Compared with LD6836TD/23H,125, the LD6836TD/23P,125 adds critical auto-discharge for safe power sequencing; compared with NCP1117ST23T3G, it offers 60× lower shutdown current, 50× smaller footprint, and integrated enable control-making it uniquely suited for modern portable electronics with aggressive power management.
Availability
LD6836TD/23P,125 is available at Aetrix Electronics and suitable for smartphone application processors, digital camera ISPs, portable media player audio DACs, personal navigation device GPS ICs, and wearable sensor hubs requiring stable component supply with guaranteed long-term availability.
Supply support for LD6836TD/23P,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 mixed-signal ICs.
The LD6836 series was designed specifically for ultra-compact, low-noise, and fast-sequencing power rails in battery-powered portable electronics-emphasizing miniaturization (WLCSP and SOT753), sub-100 mV dropout, and integrated auto-discharge functionality.
FAQ
What is the nominal output voltage and tolerance of the LD6836TD/23P,125?
The LD6836TD/23P,125 delivers a fixed 2.3 V output with ±0.5% accuracy at +25 °C and ±3% total variation across −40 °C to +85 °C ambient temperature. This specification is guaranteed per Table 12 in the official NXP datasheet Rev. 2, ensuring reliable operation in consumer-grade portable environments without external trimming.
Does the LD6836TD/23P,125 include an auto-discharge function, and how does it operate?
Yes, the LD6836TD/23P,125 integrates an auto-discharge function via an internal 100 Ω pull-down transistor on the OUT pin. When the EN pin is driven LOW, the regulator disables and actively pulls the output to GND, achieving ≤10% of nominal voltage within 300 µs-confirmed in Section 8, Table 12 of the datasheet under "tsd(reg)" and "Rpd".
What are the minimum and recommended external capacitors for stable operation of the LD6836TD/23P,125?
The LD6836TD/23P,125 requires a minimum 0.7 µF X7R ceramic capacitor on both IN and OUT pins, with recommended value of 1.0 µF and ESR between 5 mΩ and 500 mΩ. These values are specified in Table 13 and Section 10.1 of the datasheet to ensure loop stability and meet transient response requirements.
What is the thermal resistance and maximum junction temperature rating for the LD6836TD/23P,125 in SOT753 package?
The LD6836TD/23P,125 in SOT753 has a typical thermal resistance Rth(j-a) of 125 K/W (Table 11) and a maximum junction temperature Tj of +125 °C (Table 9). These ratings assume standard two-layer PCB layout with adequate copper pour-exceeding +125 °C triggers thermal shutdown per Figure 4 block diagram.
Is the LD6836TD/23P,125 RoHS-compliant and halogen-free?
Yes, the LD6836TD/23P,125 is Pb-free, RoHS-compliant, and free of halogen and antimony-explicitly stated in Section 1.2 as "dark green compliant." This meets IPC-1752A material declaration requirements for environmentally restricted markets.
LD6836TD/23P,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):
- 2.3V
- 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/23P,125 FAQ
1.How can I place an order for LD6836TD/23P,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836TD/23P,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/23P,125 reliable?
The price and inventory of LD6836TD/23P,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/23P,125 is usually 5 days.
3.What payment methods are accepted for LD6836TD/23P,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836TD/23P,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836TD/23P,125?
LD6836TD/23P,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836TD/23P,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/23P,125?
For technical support, including LD6836TD/23P,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836TD/23P,125 requirements.
6.How does Aetrix verify that LD6836TD/23P,125 is sourced from the original manufacturer or authorized distributors?
All LD6836TD/23P,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/23P,125 meets industry standards.
7.What is the process for return or replacement of LD6836TD/23P,125?
All LD6836TD/23P,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836TD/23P,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/23P,125 part is unused and in its original packaging.
Return procedure for LD6836TD/23P,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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