My Inquiry
My Account
NXP Semiconductors LD6836TD/28P,125
- Part No.:
- LD6836TD/28P,125
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LD6836TD/28P,125.pdf
- Description:
- IC REG LINEAR 2.8V 300MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LD6836TD/28P,125 from NXP Semiconductors is a 2.8 V fixed-output, 300 mA ultra-low-dropout linear regulator in SOT753 (SOT23-5 compatible) package, featuring 100 mV typical dropout at full load, 30 µVRMS output noise (10 Hz–100 kHz), and auto-discharge functionality via integrated pull-down transistor. It powers core logic rails in space-constrained portable devices requiring stable low-noise biasing.
For engineers reviewing the LD6836TD/28P,125 datasheet, LD6836TD/28P,125 pinout, LD6836TD/28P,125 application, or LD6836TD/28P,125 equivalent, this page delivers verified electrical specs, SOT753 terminal mapping, real-world use cases in mobile interface power domains, and validated alternative options for supply chain continuity.
Technical Context
The LD6836TD/28P,125 implements a PMOS pass transistor architecture enabling ultra-low dropout operation down to 100 mV at 300 mA, with internal voltage reference and error amplifier ensuring ±2% output accuracy over −40 °C to +85 °C ambient. Its active-HIGH enable input (VIH ≥ 1.1 V) controls fast 150 µs startup and 300 µs shutdown timing.
Integrated protection includes thermal shutdown at 160 °C (20 K hysteresis), current limiting (600 mA short-circuit), and 10 kV HBM ESD rating. The pull-down transistor (Rpd = 100 Ω) actively discharges the output during disable, eliminating residual voltage hold-up in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2% over temperature and load; enables direct replacement of 2.8 V logic rails without external feedback. |
| Dropout Voltage | 100 mV typical at 300 mA; allows operation with VIN as low as 2.9 V while maintaining regulation - critical for single-cell Li-ion or Li-poly systems. |
| PSRR | 55 dB at 1 kHz; suppresses switching noise from upstream DC-DC converters feeding sensitive analog or RF circuitry. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz); ensures clean bias for precision ADCs, audio codecs, and PLLs without added filtering. |
| Quiescent Current | 0.1 µA typical in shutdown (VEN ≤ 0.4 V); extends battery life in always-on sensor nodes and standby modes. |
| Enable Threshold | VIL ≤ 0.4 V / VIH ≥ 1.1 V; compatible with 1.8 V and 3.3 V GPIOs without level-shifting. |
| Thermal Resistance | Rth(j-a) = 125 K/W (SOT753); supports 300 mA continuous output at +85 °C ambient with standard PCB copper area. |
Pinout & Package
SOT753 plastic surface-mounted package (3.0 mm × 1.7 mm × 1.3 mm), 5-lead, lead-free and RoHS-compliant. Compatible with standard SOT23-5 footprint and reflow soldering profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator input voltage | Accepts 2.3 V to 5.5 V; requires ≥0.7 µF input capacitor for stability and transient response. |
| 2 - GND | Supply ground | Common return path for input, output, and enable; must connect to low-impedance ground plane. |
| 3 - EN | Device enable input (active HIGH) | Drives internal pass transistor; logic HIGH ≥1.1 V enables regulation; LOW ≤0.4 V disables with auto-discharge. |
| 4 - n.c. | Not connected | No internal connection; must remain unconnected on PCB to avoid parasitic coupling or leakage paths. |
| 5 - OUT | Regulator output voltage | Delivers regulated 2.8 V; requires ≥0.7 µF ceramic output capacitor (X7R, 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% VOUT within 300 µs after disable - prevents unintended wake-up in sleep-mode systems. |
| Low-noise regulation | 30 µVRMS output noise enables direct powering of noise-sensitive analog blocks (e.g., RF front-ends, high-resolution SAR ADCs) without post-regulation filtering. |
| High PSRR at low frequency | 55 dB rejection at 1 kHz mitigates ripple from buck converter switching frequencies and their harmonics, preserving signal integrity in mixed-signal SoCs. |
| Fast transient response | 150 µs startup time ensures rapid power sequencing compliance in multi-rail systems with strict timing windows (e.g., mobile application processors). |
| Robust protection suite | Thermal shutdown (160 °C), overcurrent limiting (600 mA), and 10 kV HBM ESD rating enable reliable operation in handheld consumer electronics exposed to environmental stress. |
Applications
| Smartphone Baseband Power | Digital Camera Image Sensor Bias |
|---|---|
Use Scenario: Supplies 2.8 V bias to baseband processor I/O banks during active call mode and low-power idle states. IC Role / Device Role / Timing Role: Primary LDO delivering clean, sequenced power with fast enable/disable control synchronized to modem state transitions. Use Value: Auto-discharge eliminates floating I/O lines during deep sleep, preventing leakage-induced battery drain and false interrupts. |
Use Scenario: Powers CMOS image sensor analog front-end (AFE) requiring ultra-low noise and tight voltage tolerance. IC Role / Device Role / Timing Role: Low-noise post-regulator placed downstream of a switching DC-DC converter to suppress switching artifacts. Use Value: 30 µVRMS noise and 55 dB PSRR ensure minimal fixed-pattern noise and improved SNR in captured images. |
| Portable Media Player Audio Codec | Bluetooth LE Peripheral MCU Core Rail |
Use Scenario: Provides 2.8 V supply to stereo audio DAC/ADC in battery-powered media players. IC Role / Device Role / Timing Role: Low-dropout regulator maintaining regulation during battery voltage sag (down to 2.9 V VIN) across playback cycles. Use Value: 100 mV dropout enables >95% efficiency at end-of-life battery voltage, extending usable runtime by ~12% versus higher-dropout alternatives. |
Use Scenario: Powers 32-bit ARM Cortex-M0+ MCU core in Bluetooth earbuds and wearables operating from single-cell Li-ion. IC Role / Device Role / Timing Role: Always-on LDO supplying MCU VDD during advertising/scanning intervals with microamp-level quiescent current in shutdown. Use Value: 0.1 µA shutdown current reduces average system standby power by >30% compared to standard 5 µA LDOs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS73628DBVT | 2.8 V fixed, 400 mA, 75 mV dropout (typ), 30 µVRMS noise, SOT23-5, but no auto-discharge; shutdown current = 1 µA. | Lacks pull-down transistor - requires external discharge circuit for systems needing rapid output collapse. | Select when lowest possible dropout is critical and auto-discharge is handled externally or not required. |
| MCP1703T-2802E/MB | 2.8 V fixed, 250 mA, 600 mV dropout (typ), 40 µVRMS noise, SOT23-5, no enable pin or auto-discharge. | Non-adjustable, no enable control - suitable only for always-on, low-current applications. | Choose for cost-sensitive, non-sequenced designs where 250 mA and higher dropout are acceptable. |
Compared with TPS73628DBVT and MCP1703T-2802E/MB, LD6836TD/28P,125 uniquely combines 300 mA capability, 100 mV dropout, 30 µVRMS noise, and integrated auto-discharge in SOT753 - making it optimal for battery-powered portable systems demanding both low-noise regulation and controlled power-down behavior.
Availability
LD6836TD/28P,125 is available at Aetrix Electronics and suitable for smartphone baseband power, digital camera image sensor bias, portable media player audio codec supply, and Bluetooth LE peripheral MCU core rail applications requiring stable component supply and long-term production support.
Supply support for LD6836TD/28P,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 markets.
The LD6836 series was designed specifically for portable and battery-powered applications requiring ultra-low-noise, low-dropout regulation with fast enable control and integrated safety features - targeting space-constrained mobile interfaces and sensor subsystems.
FAQ
What is the nominal output voltage and tolerance of the LD6836TD/28P,125?
The LD6836TD/28P,125 delivers a fixed 2.8 V output with ±2% tolerance over −40 °C to +85 °C ambient temperature and full 300 mA load range. This specification is guaranteed per Table 12 in the official NXP datasheet Rev. 2 (2012), and applies directly to the LD6836TD/28P,125 variant with /28P suffix indicating 2.8 V pull-down configuration.
Does the LD6836TD/28P,125 include auto-discharge functionality, and how does it operate?
Yes, the LD6836TD/28P,125 integrates an active pull-down transistor that provides low-ohmic output discharge when disabled (EN < 0.4 V). As confirmed in Section 1.1 and Figure 4 of the datasheet, this auto-discharge function pulls the OUT pin to <5% of nominal voltage within 300 µs, ensuring safe, rapid power-down in battery-operated systems. The LD6836TD/28P,125 implements this feature inherently due to its /P suffix designation.
What are the recommended external capacitors for stable operation of the LD6836TD/28P,125?
The LD6836TD/28P,125 requires a minimum 0.7 µF X7R ceramic capacitor on both input (IN) and output (OUT), with ESR between 5 mΩ and 500 mΩ. Per Section 10.1 and Table 13, 1.0 µF is the typical value used for optimal transient response and PSRR performance. These values apply specifically to the LD6836TD/28P,125 in SOT753 package and are validated across its full operating temperature range.
What is the maximum input voltage and thermal limit for the LD6836TD/28P,125?
The LD6836TD/28P,125 supports input voltages up to +6.0 V for transient conditions (4 ms max) and +5.5 V continuously, as specified in Table 9. Its junction temperature is rated from −40 °C to +125 °C, with thermal shutdown activating at +160 °C (20 K hysteresis). These absolute maximum ratings are defined for the LD6836TD/28P,125 in SOT753 package and assume proper PCB copper area per thermal characterization data (Rth(j-a) = 125 K/W).
Is the LD6836TD/28P,125 RoHS-compliant and halogen-free?
Yes, the LD6836TD/28P,125 is Pb-free, RoHS-compliant, and free of halogen and antimony per NXP's "dark green compliant" standard, as stated in Section 1.2 of the datasheet. This compliance applies to the full LD6836TD product family, including the LD6836TD/28P,125 variant in SOT753 packaging, and is verified under NXP's quality and reliability specifications (NX1-00023).
LD6836TD/28P,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):
- 2.8V
- 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/28P,125 FAQ
1.How can I place an order for LD6836TD/28P,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836TD/28P,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/28P,125 reliable?
The price and inventory of LD6836TD/28P,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/28P,125 is usually 5 days.
3.What payment methods are accepted for LD6836TD/28P,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836TD/28P,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836TD/28P,125?
LD6836TD/28P,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836TD/28P,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/28P,125?
For technical support, including LD6836TD/28P,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836TD/28P,125 requirements.
6.How does Aetrix verify that LD6836TD/28P,125 is sourced from the original manufacturer or authorized distributors?
All LD6836TD/28P,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/28P,125 meets industry standards.
7.What is the process for return or replacement of LD6836TD/28P,125?
All LD6836TD/28P,125 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836TD/28P,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/28P,125 part is unused and in its original packaging.
Return procedure for LD6836TD/28P,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LD6836TD/28P,125 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
