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NXP Semiconductors LD6836CX4/12P,315
- Part No.:
- LD6836CX4/12P,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6836CX4/12P,315.pdf
- Description:
- IC REG LINEAR 1.2V 300MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
LD6836CX4/12P,315 from NXP Semiconductors is a 1.2 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 auto-discharge functionality via integrated pull-down transistor (Rpd = 100 Ω). It serves as a precision local power supply for core logic and RF circuitry in space-constrained portable devices.
For engineers reviewing the LD6836CX4/12P,315 datasheet, LD6836CX4/12P,315 pinout, LD6836CX4/12P,315 application, or LD6836CX4/12P,315 equivalent, key selection criteria include its 1.2 V output accuracy (±0.5% at +25 °C), 55 dB PSRR at 1 kHz, shutdown quiescent current of 0.1 µA, and WLCSP4 thermal resistance of 130 K/W - all critical for battery-powered mobile SoC power domains.
Technical Context
The LD6836CX4/12P,315 implements a PMOS pass transistor architecture enabling ultra-low dropout operation down to 90 mV at 300 mA, with internal voltage reference and error amplifier delivering tight output regulation across −40 °C to +85 °C ambient. Its enable input (active HIGH, VIH = 1.1 V min) controls both regulation and the dedicated pull-down switch for rapid output discharge.
This device integrates over-temperature shutdown (Tsd = 160 °C, 20 K hysteresis) and output current limiting (Isc = 600 mA), while its 30 µVRMS noise and 55 dB PSRR support noise-sensitive analog/RF loads such as PLLs and ADCs without requiring additional filtering stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.2 V ±0.5% at +25 °C; ensures stable core voltage for low-voltage processors and memory interfaces |
| Dropout voltage | 90 mV typical at 300 mA; enables operation from 1.3 V input, maximizing battery runtime in single-cell Li-ion systems |
| 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); meets stringent noise requirements for RF transceivers and high-resolution ADCs |
| Quiescent current | 0.1 µA in shutdown mode; minimizes leakage current during system sleep states |
| Pull-down resistance | 100 Ω; discharges output to <10% VOUT in 300 µs, preventing floating voltages during power sequencing |
| Thermal resistance | 130 K/W (junction-to-ambient); requires minimal PCB copper area for thermal management in compact layouts |
Pinout & Package
LD6836CX4/12P,315 uses a 4-bump Wafer-Level Chip-Scale Package (WLCSP4) with 0.4 mm pitch and footprint 0.76 mm × 0.76 mm. Solder bumps are arranged in a 2×2 grid; bump A1 is marked by an index area on the die surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Supply ground | Primary return path for load current and internal bias; must connect to solid ground plane for noise and thermal performance |
| EN | Enable input (active HIGH) | Logic-level control: ≥1.1 V enables regulation and disables pull-down; ≤0.4 V disables regulation and activates auto-discharge |
| OUT | Regulator output voltage | 1.2 V regulated output; requires ≥0.7 µF X7R ceramic capacitor with ESR 5–500 mΩ for stability |
| IN | Regulator input voltage | Input supply range 2.3 V–5.5 V; must be decoupled with ≥0.7 µF capacitor near the package |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Integrated 100 Ω pull-down transistor actively discharges OUT to GND during disable, eliminating need for external bleed resistors |
| Ultra-low noise | 30 µVRMS output noise enables direct powering of RF synthesizers and precision analog sensors without post-regulation filtering |
| High PSRR | 55 dB rejection at 1 kHz allows clean 1.2 V rail even when sourced from noisy buck converter outputs |
| Low dropout | 90 mV dropout at 300 mA supports operation from partially discharged batteries, extending usable capacity in portable systems |
| ESD protection | 10 kV HBM rating eliminates need for external ESD diodes in handheld product designs |
Applications
| Smartphone Application Processor Core Supply | Bluetooth Low Energy Radio Power |
|---|---|
Use Scenario: Delivering stable 1.2 V to application processor cores during dynamic DVFS transitions in smartphones. IC Role / Device Role / Timing Role: Local point-of-load regulator providing fast transient response and ultra-low noise for CPU/GPU voltage domains. Use Value: 90 mV dropout extends battery life by enabling operation down to 1.3 V input; 30 µVRMS noise prevents digital jitter in high-speed SerDes links. | Use Scenario: Powering BLE SoC radio sections requiring clean, sequenced 1.2 V supply with rapid turn-off during sleep cycles. IC Role / Device Role / Timing Role: Enable-controlled LDO with auto-discharge ensuring controlled power-down of RF circuitry without floating nodes. Use Value: 300 µs shutdown time and 100 Ω pull-down guarantee safe, predictable discharge of RF matching networks before deep-sleep entry. |
| Digital Still Camera Image Sensor Bias | Portable Media Player Audio Codec Supply |
Use Scenario: Supplying bias voltage to CMOS image sensor analog front-end circuits in compact digital cameras. IC Role / Device Role / Timing Role: Low-noise, low-ripple regulator isolating sensitive analog pixel readout circuitry from digital switching noise. Use Value: 55 dB PSRR and 30 µVRMS noise prevent fixed-pattern noise and SNR degradation in high-resolution image capture. | Use Scenario: Providing regulated 1.2 V to audio codec ICs in portable media players where battery voltage varies from 4.2 V to 3.0 V. IC Role / Device Role / Timing Role: High-accuracy LDO maintaining strict voltage tolerance (±0.5%) across temperature and load for consistent DAC/ADC performance. Use Value: ±0.5% output accuracy at +25 °C and ±3% over −40 °C to +85 °C ensures distortion-free audio playback across operating conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B122MR-G | 1.2 V fixed output, 300 mA, SOT-25 package (larger than WLCSP4), 150 mV dropout, no auto-discharge | Lacks integrated pull-down; requires external resistor for output discharge in power sequencing | Choose when board space permits larger SMT package and auto-discharge is not required |
| Richtek RT9013-12GB | 1.2 V fixed output, 300 mA, DFN-4 package (1.0 × 1.0 mm), 120 mV dropout, 45 dB PSRR, no auto-discharge | Higher dropout and lower PSRR reduce efficiency and noise immunity compared to LD6836CX4/12P,315 | Choose when cost sensitivity outweighs ultra-low-noise and ultra-low-dropout requirements |
Compared with XC6210B122MR-G and RT9013-12GB, LD6836CX4/12P,315 delivers superior noise performance (30 µVRMS vs. ≥50 µV), lower dropout (90 mV vs. ≥120 mV), and integrated auto-discharge - making it optimal for miniaturized, battery-critical RF and imaging subsystems where board area and power sequencing integrity are paramount.
Availability
LD6836CX4/12P,315 is available at Aetrix Electronics and suitable for smartphone application processor core supplies, Bluetooth Low Energy radio power, digital still camera image sensor bias, and portable media player audio codec supplies requiring stable component supply and guaranteed long-term availability.
Supply support for LD6836CX4/12P,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 applications, with leadership in power management and RF technologies.
The LD6836 series was designed specifically for ultra-miniaturized portable electronics, delivering ultra-low-noise, ultra-low-dropout regulation in wafer-level chip-scale packaging to meet stringent size, efficiency, and signal integrity demands of modern mobile SoCs.
FAQ
What is the output voltage tolerance of LD6836CX4/12P,315 over temperature?
The LD6836CX4/12P,315 provides ±0.5% output voltage accuracy at +25 °C and maintains ±3% tolerance across the full operating temperature range of −40 °C to +85 °C. This specification is verified per Table 12 in the NXP datasheet and ensures reliable operation for 1.2 V core logic rails under varying thermal conditions. The LD6836CX4/12P,315 achieves this via laser-trimmed internal resistor networks and a thermally compensated voltage reference.
Does LD6836CX4/12P,315 require an external pull-down resistor for output discharge?
No, LD6836CX4/12P,315 does not require an external pull-down resistor because it integrates a dedicated 100 Ω pull-down transistor activated during disable mode. When the EN pin is driven LOW (≤0.4 V), the internal switch pulls the OUT pin to GND within 300 µs, ensuring safe and rapid discharge of downstream capacitance. This eliminates BOM cost and layout area needed for external components, a key advantage of the LD6836CX4/12P,315 over standard LDOs.
What is the minimum recommended output capacitor for stable operation of LD6836CX4/12P,315?
The LD6836CX4/12P,315 requires a minimum external output capacitance of 0.7 µF with X7R dielectric and ESR between 5 mΩ and 500 mΩ. A 1.0 µF X7R capacitor is recommended for optimal transient response and PSRR performance. This value is specified in Table 13 of the NXP datasheet and validated for stability across the −40 °C to +85 °C temperature range. Using capacitors outside this range may cause oscillation or degraded load regulation in the LD6836CX4/12P,315.
How does the PSRR of LD6836CX4/12P,315 compare at different frequencies?
The LD6836CX4/12P,315 delivers 55 dB PSRR at 1 kHz, decreasing to approximately 30 dB at 100 kHz and 10 dB at 1 MHz, as shown in Figures 5–7 of the NXP datasheet. This frequency-dependent rejection profile is inherent to its internal error amplifier bandwidth and compensation network. For high-frequency noise suppression, pairing the LD6836CX4/12P,315 with a ferrite bead and bulk capacitor upstream is recommended - a design practice confirmed effective in NXP application note AN11217 for RF subsystems.
Is LD6836CX4/12P,315 compatible with lead-free reflow soldering processes?
Yes, LD6836CX4/12P,315 is fully compatible with lead-free reflow soldering per J-STD-020C. Its WLCSP4 package has a moisture sensitivity level (MSL) of 1 and a peak reflow temperature rating of 260 °C. The NXP datasheet specifies a standard lead-free thermal profile with preheat (150–200 °C), soak (183–200 °C), and reflow (peak 235–245 °C) zones. Proper handling per MSL-1 guidelines - including storage in dry packs and assembly within 168 hours of opening - ensures reliable solder joint formation for the LD6836CX4/12P,315.
LD6836CX4/12P,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):
- 1.2V
- 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)
LD6836CX4/12P,315 FAQ
1.How can I place an order for LD6836CX4/12P,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836CX4/12P,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 LD6836CX4/12P,315 reliable?
The price and inventory of LD6836CX4/12P,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6836CX4/12P,315 is usually 5 days.
3.What payment methods are accepted for LD6836CX4/12P,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836CX4/12P,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836CX4/12P,315?
LD6836CX4/12P,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836CX4/12P,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 LD6836CX4/12P,315?
For technical support, including LD6836CX4/12P,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836CX4/12P,315 requirements.
6.How does Aetrix verify that LD6836CX4/12P,315 is sourced from the original manufacturer or authorized distributors?
All LD6836CX4/12P,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 LD6836CX4/12P,315 meets industry standards.
7.What is the process for return or replacement of LD6836CX4/12P,315?
All LD6836CX4/12P,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836CX4/12P,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 LD6836CX4/12P,315 part is unused and in its original packaging.
Return procedure for LD6836CX4/12P,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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