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NXP Semiconductors LD6836TD/14H,125
- Part No.:
- LD6836TD/14H,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6836TD/14H,125.pdf
- Description:
- IC REG LINEAR 1.4V 300MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:29,980
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Product details
Overview
LD6836TD/14H,125 from NXP Semiconductors is a fixed-output 1.4 V, 300 mA ultra-low-dropout linear regulator in SOT753 package, featuring 100 mV typical dropout at full load, 30 µVRMS output noise (10 Hz–100 kHz), and active-HIGH enable control - deployed in power rails for mobile phone baseband ICs and camera sensor interfaces.
For engineers reviewing the LD6836TD/14H,125 datasheet, LD6836TD/14H,125 pinout, LD6836TD/14H,125 application, or LD6836TD/14H,125 equivalent, this page delivers verified electrical specs, thermal resistance (125 K/W), high-ohmic disable behavior, PSRR (−55 dB @ 1 kHz), and real-world design implications for portable low-noise supply design.
Technical Context
The LD6836TD/14H,125 uses a PMOS pass transistor architecture enabling ultra-low dropout (100 mV typ. @ 300 mA) and stable operation with 0.7–1.0 µF ceramic output capacitance. Its internal voltage reference and error amplifier maintain ±0.5% output accuracy at +25 °C and ±3% over −40 °C to +85 °C ambient.
It integrates over-temperature shutdown (160 °C trigger, 20 K hysteresis) and current limiting (600 mA short-circuit protection), while the EN pin accepts 1.1–5.5 V logic-high signals and draws only 0.1 µA in shutdown - making it suitable for battery-powered systems requiring fast start-up (150 µs) and zero-load quiescent current minimization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.4 V ±3% over −40 °C to +85 °C - ensures stable core voltage for 1.4 V I/O domains in mobile SoCs. |
| Dropout Voltage | 100 mV typical at 300 mA - enables regulation from 1.5 V input, critical for single-cell Li-ion or Li-poly backup rails. |
| PSRR | −55 dB @ 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding noisy system rails. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz) - meets low-noise analog circuit requirements for image sensors and ADC references. |
| Quiescent Current | 0.1 µA in shutdown mode - extends battery life in always-on standby functions like RTC or wake-on-LAN circuits. |
| Enable Threshold | VIH = 1.1 V min, VIL = 0.4 V max - compatible with 1.8 V and 3.3 V GPIO without level-shifting. |
| Thermal Resistance | Rth(j-a) = 125 K/W - requires minimal copper pour on 2-layer PCBs to sustain 300 mA continuous output at +85 °C ambient. |
Pinout & Package
SOT753 plastic surface-mounted package (5-lead, SC-74A compatible), 3.0 mm × 1.7 mm × 1.3 mm body size, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator input voltage | Accepts 2.3–5.5 V; must be decoupled with ≥0.7 µF X7R ceramic capacitor close to pin. |
| 2 - GND | Supply ground | Primary return path for load current and internal bias; connects directly to PCB ground plane. |
| 3 - EN | Enable input (active HIGH) | Drives regulator ON when ≥1.1 V applied; pulls output to high-impedance state when <0.4 V. |
| 4 - n.c. | Not connected | No internal connection; must remain unconnected and unstubbed on PCB layout. |
| 5 - OUT | Regulator output voltage | Delivers regulated 1.4 V; requires 0.7–1.0 µF ceramic capacitor with ESR 5–500 mΩ for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 100 mV typical @ 300 mA enables use with weak or aging batteries down to 1.5 V input. |
| Low-noise regulation | 30 µVRMS output noise supports noise-sensitive analog blocks without external filtering. |
| High-ohmic disable | EN = LOW places OUT in tri-state (high-Z), preventing back-powering of upstream circuits during sleep. |
| Integrated protection | Thermal shutdown (160 °C) and current limit (600 mA) eliminate need for external fault management circuitry. |
| ESD robustness | 10 kV HBM ESD rating allows safe handling and assembly in standard manufacturing environments. |
Applications
| Smartphone Baseband Power | Digital Camera Sensor Rail |
|---|---|
|
Use Scenario: Supplies clean 1.4 V to baseband processor I/O banks in LTE smartphones operating from shared 3.8 V battery rail. IC Role / Device Role / Timing Role: Low-noise post-regulator stepping down from main PMIC buck output to meet strict I/O voltage tolerance. Use Value: 30 µVRMS noise prevents digital coupling into RF transceiver receive paths, maintaining SNR performance. |
Use Scenario: Powers CMOS image sensor analog front-end in compact digital still cameras where space limits discrete LDO count. IC Role / Device Role / Timing Role: Fixed 1.4 V LDO delivering stable bias to pixel array and column ADC reference. Use Value: 100 mV dropout allows direct regulation from 1.5 V intermediate rail, eliminating cascaded conversion losses. |
| Portable Media Player Audio Codec | Wearable Health Monitor Analog Subsystem |
|
Use Scenario: Provides quiet 1.4 V supply to stereo audio DAC and headphone amplifier in battery-powered media players. IC Role / Device Role / Timing Role: Low-noise linear regulator isolating sensitive audio circuitry from noisy digital supply domains. Use Value: −55 dB PSRR at 1 kHz attenuates ripple from switching DC-DC converters powering display and CPU. |
Use Scenario: Powers ECG/PPG analog signal chain (op-amps, filters, ADC drivers) in ultra-thin wearable patches. IC Role / Device Role / Timing Role: Compact SOT753 LDO enabling miniaturized PCBs with minimal BOM footprint. Use Value: 0.1 µA shutdown current extends coin-cell battery life beyond 6 months in always-monitoring mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0514PDBVR | 1.4 V fixed, 200 mA, 170 mV dropout @ 200 mA, 50 µVRMS noise, SOT-23-5 | Lower output current rating; higher dropout reduces usable input range below 1.6 V | Select when lower cost and legacy footprint compatibility outweigh 100 mA current headroom loss. |
| MCP1700T-1402E/TT | 1.4 V fixed, 250 mA, 175 mV dropout @ 250 mA, 30 µVRMS noise, SOT-23-3 | 3-pin package lacks enable control; no high-Z disable - unsuitable for power-gated subsystems | Choose only for simple always-on rails where EN functionality and tri-state output are unnecessary. |
Compared with TPS7A0514PDBVR and MCP1700T-1402E/TT, LD6836TD/14H,125 delivers higher output current (300 mA vs. ≤250 mA), lower dropout (100 mV vs. ≥170 mV), and guaranteed high-ohmic disable - making it optimal for power-managed portable systems requiring dynamic rail control and extended battery runtime.
Availability
LD6836TD/14H,125 is available at Aetrix Electronics and suitable for smartphone baseband power, digital camera sensor rails, portable media player audio codecs, and wearable health monitor analog subsystems requiring stable component supply across production lifecycles.
Supply support for LD6836TD/14H,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 interface ICs.
The LD6836 series was designed for ultra-compact, low-noise, high-efficiency power delivery in portable devices - targeting mobile handsets, digital cameras, and personal navigation systems where board space and battery life are critical constraints.
FAQ
What is the nominal output voltage and tolerance of the LD6836TD/14H,125?
The LD6836TD/14H,125 provides a fixed 1.4 V output with ±0.5% tolerance at +25 °C and ±3% over the full operating temperature range (−40 °C to +85 °C). This specification is confirmed in Table 12 of the NXP datasheet and applies specifically to the /14H variant, which denotes the 1.4 V high-ohmic disable version in SOT753 packaging.
Does the LD6836TD/14H,125 support active-HIGH enable control, and what are the voltage thresholds?
Yes, the LD6836TD/14H,125 features an active-HIGH enable input (pin 3) with VIH(min) = 1.1 V and VIL(max) = 0.4 V, as specified in Table 12. When EN ≥1.1 V, the regulator powers up; when EN ≤0.4 V, it enters shutdown and places the OUT pin in high-impedance state - a key feature distinguishing the /H suffix variant from /P (pull-down) versions.
What is the maximum continuous output current and thermal derating behavior of the LD6836TD/14H,125?
The LD6836TD/14H,125 delivers 300 mA continuously under recommended conditions. Its thermal resistance Rth(j-a) is 125 K/W (Table 11), meaning junction temperature rises ~37.5 °C above ambient at full load (300 mA × 100 mV = 30 mW dissipation). Derating begins above +85 °C ambient per Table 9's Ptot limit of 800 mW.
Can the LD6836TD/14H,125 be used with ceramic output capacitors, and what are the minimum requirements?
Yes - the LD6836TD/14H,125 is stable with X7R ceramic capacitors. Per Table 13 and Section 10.1, the minimum external load capacitance is 0.7 µF (±30% tolerance), with ESR between 5 mΩ and 500 mΩ. A 1.0 µF X7R capacitor is recommended for optimal transient response and PSRR performance.
How does the high-ohmic disable behavior of the LD6836TD/14H,125 benefit system-level power management?
The LD6836TD/14H,125's high-ohmic (tri-state) output during shutdown prevents back-powering of upstream circuits or leakage through parallel rails - essential in multi-rail portable systems where isolated power domain control is required. This behavior is intrinsic to the /H suffix and confirmed in Section 1.1 and Figure 3 of the datasheet.
LD6836TD/14H,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):
- 1.4V
- 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/14H,125 FAQ
1.How can I place an order for LD6836TD/14H,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836TD/14H,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/14H,125 reliable?
The price and inventory of LD6836TD/14H,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/14H,125 is usually 5 days.
3.What payment methods are accepted for LD6836TD/14H,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836TD/14H,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836TD/14H,125?
LD6836TD/14H,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836TD/14H,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/14H,125?
For technical support, including LD6836TD/14H,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836TD/14H,125 requirements.
6.How does Aetrix verify that LD6836TD/14H,125 is sourced from the original manufacturer or authorized distributors?
All LD6836TD/14H,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/14H,125 meets industry standards.
7.What is the process for return or replacement of LD6836TD/14H,125?
All LD6836TD/14H,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836TD/14H,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/14H,125 part is unused and in its original packaging.
Return procedure for LD6836TD/14H,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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