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NXP Semiconductors LD6836TD/13P,125
- Part No.:
- LD6836TD/13P,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6836TD/13P,125.pdf
- Description:
- IC REG LINEAR 1.3V 300MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:33,000
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Product details
Overview
LD6836TD/13P,125 from NXP Semiconductors is a 300 mA ultra-low-dropout linear regulator in SOT753 package with fixed 1.3 V output, 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-designed for power-sensitive mobile interfaces in smartphones and portable media players.
For engineers reviewing the LD6836TD/13P,125 datasheet, LD6836TD/13P,125 pinout, LD6836TD/13P,125 application, or LD6836TD/13P,125 equivalent, this page delivers verified electrical specs, SOT753 terminal mapping, real-world use cases in battery-powered analog/digital subsystems, and validated alternative LDOs with documented functional and application-level differences.
Technical Context
The LD6836TD/13P,125 integrates a PMOS pass transistor enabling 100 mV dropout at 300 mA, thermal shutdown at 160 °C with 20 K hysteresis, and overcurrent limiting to 600 mA. Its internal reference and error amplifier maintain ±0.5 % output accuracy at 25 °C and ±3 % over −40 °C to +85 °C ambient.
It features an active-HIGH enable input (VIH ≥ 1.1 V, VIL ≤ 0.4 V), 150 µs startup time to 95 % of nominal output, and a dedicated pull-down transistor (Rpd = 100 Ω) that actively discharges the output during disable-critical for fast system power sequencing in portable devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.3 V - eliminates external feedback network, reduces BOM count and layout area |
| Dropout voltage | 100 mV typical at 300 mA - enables stable regulation down to VIN = 1.4 V, extending battery runtime in single-cell Li-ion systems |
| PSRR | 55 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding sensitive RF/analog circuits |
| Output noise | 30 µV RMS (10 Hz–100 kHz) - meets low-noise requirements for ADC references and audio codec supplies |
| Quiescent current | 0.1 µA typical in shutdown - minimizes leakage current during deep sleep modes in always-on sensors |
| Enable threshold | VIL ≤ 0.4 V, VIH ≥ 1.1 V - compatible with 1.8 V and 3.3 V logic families without level-shifting |
| Thermal resistance | Rth(j-a) = 125 K/W - supports continuous 300 mA operation on standard 2-layer PCBs with minimal copper pour |
Pinout & Package
SOT753 plastic surface-mounted package (SC-74A compatible), 5-pin, 1.3 mm × 2.5 mm footprint, 1.1 mm height, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input voltage | Accepts 2.3 V–5.5 V supply; requires ≥0.7 µF input capacitor for stability and transient response |
| 2 (GND) | Supply ground | Primary return path for load current and internal bias; must connect to low-impedance ground plane |
| 3 (EN) | Device enable input | Active-HIGH control: drives output ON when ≥1.1 V; pulls output low via internal transistor when <0.4 V |
| 4 (n.c.) | Not connected | No internal connection; must remain unconnected or tied to GND (not recommended for noise coupling) |
| 5 (OUT) | Regulator output voltage | Delivers regulated 1.3 V; requires ≥0.7 µF ceramic output capacitor with ESR 5–500 mΩ for loop stability |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Integrated 100 Ω pull-down transistor discharges output to <5 % VO(nom) in 300 µs after disable-enables rapid power-down in multi-rail systems |
| Low-noise regulation | 30 µV RMS noise over 10 Hz–100 kHz ensures clean supply for precision analog blocks without added filtering |
| High PSRR at low frequency | 55 dB rejection at 1 kHz mitigates ripple from buck converter switching edges entering sensitive analog domains |
| Robust protection suite | Thermal shutdown (160 °C), current limiting (600 mA), and 10 kV HBM ESD rating ensure reliability in handheld and wearable environments |
| Ultra-low shutdown current | 0.1 µA typical quiescent current in disabled state extends shelf life and battery hold-up time in storage mode |
Applications
| Smartphone Baseband Power | Digital Camera Sensor Supply |
|---|---|
Use Scenario: Powering baseband processor I/O banks requiring stable 1.3 V at up to 300 mA during burst data transmission. IC Role / Device Role / Timing Role: Primary LDO delivering regulated rail; enabled synchronously with processor wake-up signal. Use Value: Auto-discharge ensures rapid rail collapse between transmit bursts, reducing dynamic power loss and preventing latch-up in adjacent logic. | Use Scenario: Supplying CMOS image sensor analog front-end where supply noise directly impacts SNR and fixed-pattern noise. IC Role / Device Role / Timing Role: Low-noise post-regulator cleaning up switched-mode supply output before sensor analog chain. Use Value: 30 µV RMS noise and 55 dB PSRR suppress switching artifacts from main PMIC, preserving >65 dB sensor SNR. |
| Portable Media Player Audio Codec | Wearable Health Monitor Reference Rail |
Use Scenario: Providing clean 1.3 V bias to stereo DAC and headphone amplifier in battery-powered media players. IC Role / Device Role / Timing Role: Dedicated low-noise LDO decoupling audio subsystem from noisy system rails. Use Value: Ultra-low dropout allows operation down to 1.4 V input, maximizing usable capacity from single-cell Li-ion (2.8–4.2 V range). | Use Scenario: Generating precision 1.3 V reference for biomedical ADCs measuring ECG/PPG signals in compact wearables. IC Role / Device Role / Timing Role: Stable, low-drift voltage source for ratiometric measurement accuracy. Use Value: ±3 % output tolerance over −40 °C to +85 °C ensures consistent ADC LSB size across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0513PDQNR | 200 mA output, 170 mV dropout at 200 mA, 1.3 V fixed, no auto-discharge | Lacks pull-down function; requires external discharge circuit for fast rail collapse | Select when lower quiescent current (250 nA) is prioritized over discharge speed and higher load current |
| MCP1700T-1302E/TT | 250 mA output, 175 mV dropout at 250 mA, 1.3 V fixed, 1.8–6.0 V input range | Higher minimum input voltage limits use in deep-discharge Li-ion scenarios (<2.3 V) | Select when wider input range compatibility with legacy 3.3 V/5 V supplies outweighs need for ultra-low dropout |
Compared with TPS7A0513PDQNR and MCP1700T-1302E/TT, LD6836TD/13P,125 uniquely combines 300 mA capability, 100 mV dropout, and integrated auto-discharge-making it optimal for space-constrained, battery-critical portable designs requiring fast, controlled power sequencing.
Availability
LD6836TD/13P,125 is available at Aetrix Electronics and suitable for smartphone baseband power, digital camera sensor supply, portable media player audio codec, and wearable health monitor reference rail applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LD6836TD/13P,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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer electronics.
The LD6836 series belongs to NXP's ultra-low-noise, low-dropout regulator product line, engineered specifically for power integrity in miniaturized portable electronics where board space, battery efficiency, and signal cleanliness are critical design constraints.
FAQ
What is the maximum input voltage rating for LD6836TD/13P,125?
The absolute maximum input voltage for LD6836TD/13P,125 is +6.0 V for transient conditions up to 4 ms, with recommended continuous operation between 2.3 V and 5.5 V. Exceeding 6.0 V risks permanent damage to the internal PMOS pass device and reference circuitry. Always include input overvoltage protection if upstream sources may exceed this limit.
Does LD6836TD/13P,125 require an external output capacitor, and what are the specifications?
Yes, LD6836TD/13P,125 requires an external ceramic output capacitor of 0.7 µF to 1.0 µF with ESR between 5 mΩ and 500 mΩ for stable operation. X7R dielectric is recommended to maintain capacitance across −40 °C to +125 °C. Omitting or undersizing this capacitor causes oscillation and output voltage overshoot during load transients.
How does the auto-discharge function of LD6836TD/13P,125 operate during shutdown?
When the EN pin is driven LOW (<0.4 V), LD6836TD/13P,125 activates an internal 100 Ω pull-down transistor between OUT and GND, discharging the output capacitance to <5 % of 1.3 V within 300 µs. This eliminates floating rail conditions and prevents unintended wake-up of downstream logic, unlike high-impedance disable variants.
What is the thermal performance of LD6836TD/13P,125 under full 300 mA load?
With Rth(j-a) = 125 K/W on a standard 2-layer PCB, LD6836TD/13P,125 exhibits a junction-to-ambient temperature rise of ~37.5 °C at 300 mA and 100 mV dropout (30 mW dissipation). At 85 °C ambient, junction temperature reaches ~122.5 °C-within the 125 °C max rating, leaving 2.5 °C safety margin before thermal shutdown triggers at 160 °C.
Is LD6836TD/13P,125 compatible with lead-free reflow soldering processes?
Yes, LD6836TD/13P,125 is qualified for lead-free reflow per J-STD-020C. Its SOT753 package falls into the "<2.5 mm thickness, <350 mm³ volume" category, requiring a peak reflow temperature of 235 °C. The device withstands moisture sensitivity level 1 (MSL1) handling and does not require baking prior to assembly.
LD6836TD/13P,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):
- 1.3V
- 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/13P,125 FAQ
1.How can I place an order for LD6836TD/13P,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836TD/13P,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/13P,125 reliable?
The price and inventory of LD6836TD/13P,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/13P,125 is usually 5 days.
3.What payment methods are accepted for LD6836TD/13P,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836TD/13P,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836TD/13P,125?
LD6836TD/13P,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836TD/13P,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/13P,125?
For technical support, including LD6836TD/13P,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836TD/13P,125 requirements.
6.How does Aetrix verify that LD6836TD/13P,125 is sourced from the original manufacturer or authorized distributors?
All LD6836TD/13P,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/13P,125 meets industry standards.
7.What is the process for return or replacement of LD6836TD/13P,125?
All LD6836TD/13P,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836TD/13P,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/13P,125 part is unused and in its original packaging.
Return procedure for LD6836TD/13P,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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