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NXP Semiconductors LD6836CX4/29H,315
- Part No.:
- LD6836CX4/29H,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6836CX4/29H,315.pdf
- Description:
- IC REG LINEAR 2.9V 300MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
LD6836CX4/29H,315 from NXP Semiconductors is a 2.9 V fixed-output, 300 mA ultra-low-dropout linear regulator in a 0.4 mm pitch WLCSP4 package (0.76 × 0.76 × 0.47 mm), featuring 90 mV dropout at full load, 30 µVRMS output noise (10 Hz–100 kHz), and high-ohmic (3-state) output during disable - designed for power-sensitive mobile interfaces in smartphones and portable media players.
For engineers reviewing the LD6836CX4/29H,315 datasheet, LD6836CX4/29H,315 pinout, LD6836CX4/29H,315 application, or LD6836CX4/29H,315 equivalent, key selection criteria include its 2.9 V nominal output, WLCSP4 footprint compatibility with space-constrained PCBs, enable-input threshold (VIH = 1.1 V), thermal shutdown at 160 °C, and PSRR of −55 dB at 1 kHz - all critical for low-noise analog supply rails in battery-powered systems.
Technical Context
The LD6836CX4/29H,315 implements a PMOS pass transistor architecture enabling ultra-low dropout (90 mV typ. at 300 mA), precise 2.9 V output regulation (±0.5% at +25 °C), and fast 150 µs startup time. Its internal bandgap reference and error amplifier ensure stable operation across −40 °C to +85 °C ambient temperature.
It integrates over-temperature protection (160 °C trip, 20 K hysteresis), output current limiting (600 mA short-circuit), and 10 kV HBM ESD protection. The high-ohmic disable state eliminates output leakage paths, supporting clean system-level power sequencing in multi-rail mobile SoC designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 2.9 V ±0.5% at +25 °C; supports precision analog circuitry without external feedback components. |
| Dropout voltage | 90 mV typical at 300 mA; enables >97% efficiency at VIN = 3.0 V, extending battery runtime in 3.3 V rail-down applications. |
| PSRR | −55 dB at 1 kHz; suppresses switching noise from upstream DC-DC converters feeding sensitive RF or audio subsystems. |
| Output noise | 30 µVRMS (10 Hz–100 kHz); meets low-noise requirements for ADC references and PLL VCO supplies. |
| Quiescent current | 0.1 µA typical in shutdown (VEN ≤ 0.4 V); minimizes standby power loss in always-on sensor nodes. |
| Enable threshold | VIH = 1.1 V min, VIL = 0.4 V max; compatible with 1.8 V GPIO logic without level-shifting. |
| Thermal resistance | Rth(j-a) = 130 K/W; requires minimal copper pour for thermal management in compact handheld layouts. |
Pinout & Package
LD6836CX4/29H,315 uses a 4-bump Wafer-Level Chip-Scale Package (WLCSP4) with 0.4 mm pitch and dimensions 0.76 mm × 0.76 mm × 0.47 mm. Bump layout follows 2×2 grid with index area marking bump A1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Supply ground | Primary return path for output current and internal bias; must connect to solid ground plane for noise and thermal performance. |
| EN | Device enable input (active HIGH) | Controls regulator ON/OFF state; VIH ≥ 1.1 V enables output; VIL ≤ 0.4 V forces high-ohmic disable. |
| OUT | Regulator output voltage | Delivers regulated 2.9 V; requires ≥0.7 µF X7R ceramic capacitor (ESR 5–500 mΩ) for stability. |
| IN | Regulator input voltage | Accepts 2.3–5.5 V input; must be decoupled with ≥0.7 µF capacitor close to pin to suppress ripple and transient spikes. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 90 mV at 300 mA enables operation from single-cell Li-ion (3.0 V min) while maintaining 2.9 V output. |
| Low-noise regulation | 30 µVRMS output noise ensures clean power for noise-sensitive analog blocks like RF transceivers. |
| High-ohmic disable | Output enters 3-state (high-Z) mode when disabled - prevents back-powering or loading of downstream circuits. |
| Integrated protection | Thermal shutdown (160 °C), current limiting (600 mA), and 10 kV HBM ESD protect against real-world board-level stress. |
| Miniaturized packaging | WLCSP4 footprint (0.76 × 0.76 mm) reduces PCB area by >70% vs. SOT753, ideal for ultra-thin mobile devices. |
Applications
| Smartphone Core Logic Supply | Digital Camera Image Sensor Bias |
|---|---|
Use Scenario: Powering ARM Cortex-A series application processors' I/O or core domains requiring stable 2.9 V with minimal voltage headroom. IC Role / Device Role / Timing Role: Primary LDO delivering regulated 2.9 V from shared 3.3 V or 3.8 V system rail; provides low-noise, fast-transient response for dynamic DVFS scaling. Use Value: 90 mV dropout preserves battery life during peak CPU load; 150 µs startup enables rapid wake-from-sleep transitions without brownout. | Use Scenario: Biasing CMOS image sensor analog front-end (AFE) and column ADC circuitry in compact digital still cameras. IC Role / Device Role / Timing Role: Low-noise local regulator supplying sensor analog chain; synchronized via EN pin to match exposure timing windows. Use Value: 30 µVRMS noise prevents fixed-pattern noise in captured images; high-ohmic disable isolates sensor during idle to reduce dark current leakage. |
| Portable Media Player Audio Codec | Bluetooth LE Peripheral Power Rail |
Use Scenario: Providing clean 2.9 V to stereo audio DACs and headphone amplifiers in battery-powered media players. IC Role / Device Role / Timing Role: Dedicated LDO for audio signal path; decouples noise from noisy digital subsystems sharing same battery source. Use Value: −55 dB PSRR at 1 kHz attenuates switching noise from DC-DC converters, eliminating audible buzz in headphones. | Use Scenario: Supplying 2.9 V to Bluetooth Low Energy SoCs (e.g., Nordic nRF52 series) in wearables and IoT sensors. IC Role / Device Role / Timing Role: Always-on LDO powering BLE radio and MCU sleep modes; enabled only during active connection bursts. Use Value: 0.1 µA shutdown current extends shelf life and operational battery life beyond 1 year on coin-cell batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LD6836CX4/29P | Same 2.9 V output and WLCSP4 package, but includes integrated pull-down transistor for auto-discharge during disable. | Required where rapid output discharge is needed (e.g., multi-voltage domain sequencing, safety-critical reset). | Select LD6836CX4/29P if downstream circuitry must actively pull OUT to GND upon disable; otherwise LD6836CX4/29H,315's high-Z state is preferred for isolation. |
| LD6836TD/29H | SOT753 (5-pin) package instead of WLCSP4; higher Rth(j-a) (125 K/W vs. 130 K/W); 100 mV dropout (typ.) at 300 mA. | Suitable for prototyping or cost-sensitive designs where PCB area is less constrained and reflow process supports larger SMD packages. | Choose LD6836TD/29H for hand-soldering feasibility or legacy board compatibility; LD6836CX4/29H,315 is optimal for miniaturized production designs. |
Compared with LD6836CX4/29P, LD6836CX4/29H,315 offers superior isolation in shutdown but lacks auto-discharge; versus LD6836TD/29H, it delivers smaller footprint and lower dropout at the cost of tighter assembly requirements - making it the preferred choice for volume-manufactured portable electronics demanding maximum integration density.
Availability
LD6836CX4/29H,315 is available at Aetrix Electronics and suitable for smartphone power management, portable media player audio subsystems, and Bluetooth LE peripheral designs requiring stable component supply with guaranteed long-term availability.
Supply support for LD6836CX4/29H,315 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.
The LD6836 series was developed specifically for ultra-miniaturized, low-noise power regulation in battery-powered mobile devices - emphasizing sub-100 mV dropout, WLCSP packaging, and robust protection features for high-reliability portable applications.
FAQ
What is the nominal output voltage of the LD6836CX4/29H,315?
The LD6836CX4/29H,315 delivers a fixed nominal output voltage of 2.9 V, with initial accuracy of ±0.5% at +25 °C and ±3% over the full −40 °C to +85 °C operating temperature range. This tight tolerance eliminates need for external trimming and ensures reliable operation of 2.8–3.0 V logic and analog circuits.
Does the LD6836CX4/29H,315 support active-high enable control?
Yes, the LD6836CX4/29H,315 features an active-HIGH enable input (EN pin) with VIH minimum of 1.1 V and VIL maximum of 0.4 V, fully compatible with 1.8 V GPIO standards. When EN is pulled below 0.4 V, the device enters shutdown with 0.1 µA quiescent current and high-ohmic output state.
What package type is used for the LD6836CX4/29H,315?
The LD6836CX4/29H,315 is housed in a Wafer-Level Chip-Scale Package (WLCSP4) with 2×2 bump array, 0.4 mm pitch, and overall dimensions of 0.76 mm × 0.76 mm × 0.47 mm - optimized for ultra-dense PCB layouts in smartphones and wearables.
What is the dropout voltage specification for the LD6836CX4/29H,315 at full load?
The LD6836CX4/29H,315 exhibits a typical dropout voltage of 90 mV at 300 mA output current, with a maximum of 160 mV across temperature and process variation. This allows operation from as low as 3.0 V input while sustaining 2.9 V output - critical for single-cell Li-ion battery systems.
How does the LD6836CX4/29H,315 handle thermal overload conditions?
The LD6836CX4/29H,315 incorporates integrated over-temperature protection that disables the output when junction temperature reaches 160 °C, with 20 K hysteresis to prevent oscillation. Recovery occurs automatically once temperature falls below 140 °C, ensuring safe operation under sustained high-load or poor heatsinking conditions.
LD6836CX4/29H,315 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 4-XFBGA, WLCSP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.16V @ 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:
- 4-WLCSP (0.76x0.76)
LD6836CX4/29H,315 FAQ
1.How can I place an order for LD6836CX4/29H,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836CX4/29H,315 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 LD6836CX4/29H,315 reliable?
The price and inventory of LD6836CX4/29H,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6836CX4/29H,315 is usually 5 days.
3.What payment methods are accepted for LD6836CX4/29H,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836CX4/29H,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836CX4/29H,315?
LD6836CX4/29H,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836CX4/29H,315 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 LD6836CX4/29H,315?
For technical support, including LD6836CX4/29H,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836CX4/29H,315 requirements.
6.How does Aetrix verify that LD6836CX4/29H,315 is sourced from the original manufacturer or authorized distributors?
All LD6836CX4/29H,315 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 LD6836CX4/29H,315 meets industry standards.
7.What is the process for return or replacement of LD6836CX4/29H,315?
All LD6836CX4/29H,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836CX4/29H,315, 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 LD6836CX4/29H,315 part is unused and in its original packaging.
Return procedure for LD6836CX4/29H,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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