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NXP Semiconductors LD6836CX4/22P,315
- Part No.:
- LD6836CX4/22P,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6836CX4/22P,315.pdf
- Description:
- IC REG LINEAR 2.2V 300MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:18,000
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Product details
Overview
LD6836CX4/22P,315 from NXP Semiconductors is a 2.2 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 integrated auto-discharge via pull-down transistor. It delivers stable power to core logic and RF circuitry in space-constrained mobile devices.
For engineers reviewing the LD6836CX4/22P,315 datasheet, LD6836CX4/22P,315 pinout, LD6836CX4/22P,315 application, or LD6836CX4/22P,315 equivalent, this page provides verified electrical specs, WLCSP4 terminal mapping, thermal resistance (130 K/W), PSRR (55 dB @ 1 kHz), and validated alternatives for portable power rail design.
Technical Context
The LD6836CX4/22P,315 implements a PMOS pass transistor architecture enabling ultra-low dropout operation down to 90 mV at 300 mA while maintaining stability with only 0.7 µF ceramic output capacitance. Its active-HIGH enable input (VIH ≥ 1.1 V) controls fast turn-on (150 µs) and controlled shutdown (300 µs) with auto-discharge via 100 Ω internal pull-down.
Designed for high-PSRR analog supply domains, it achieves −55 dB rejection at 1 kHz and integrates over-temperature shutdown (160 °C) and current limiting (600 mA short-circuit). The device operates across −40 °C to +85 °C ambient with input voltage range 2.3 V to 5.5 V and supports RoHS-compliant, halogen-free PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.2 V ±3 % over −30 °C to +85 °C; enables direct powering of 2.2 V I/O domains without external feedback. |
| Dropout Voltage | 90 mV typical at 300 mA; allows regulation from 2.3 V input down to 2.2 V output, maximizing 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 or ADC circuitry. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz); meets low-noise requirements for precision analog sensors and audio codecs. |
| Quiescent Current | 0.1 µA typical in shutdown mode; minimizes leakage current in always-on system standby states. |
| Thermal Resistance | 130 K/W (junction-to-ambient); requires minimal PCB copper area for thermal management in compact layouts. |
| Enable Threshold | VIL ≤ 0.4 V / VIH ≥ 1.1 V; compatible with 1.8 V and 3.3 V GPIO logic without level-shifting. |
Pinout & Package
LD6836CX4/22P,315 uses a 4-bump Wafer-Level Chip-Scale Package (WLCSP4) with 0.4 mm pitch and footprint 0.76 mm × 0.76 mm. Bumps are arranged in a 2×2 grid with index marker at bump A1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Supply ground reference | Primary return path for output current and internal bias; must connect to solid ground plane for noise and thermal performance. |
| EN | Enable input (active HIGH) | Controls regulator state; driven HIGH ≥1.1 V to enable, LOW ≤0.4 V to disable with auto-discharge activation. |
| OUT | Regulated output voltage | Delivers 2.2 V to load; requires ≥0.7 µF X7R ceramic capacitor with ESR 5–500 mΩ for stability. |
| IN | Input voltage supply | Accepts 2.3–5.5 V; benefits from local 1 µF input decoupling capacitor near the bump. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Integrated 100 Ω pull-down transistor discharges output to <10 % VOUT in 300 µs upon disable, preventing floating rails in multi-rail sequencing. |
| Low-noise regulation | 30 µVRMS output noise enables clean power for RF transceivers and high-resolution ADCs without additional filtering. |
| Ultra-fast startup | 150 µs turn-on time supports dynamic power gating in processors and modems requiring rapid rail activation. |
| High PSRR at low frequency | 55 dB rejection at 1 kHz mitigates ripple from buck converter switching frequencies and their harmonics. |
| Miniaturized packaging | 0.76 mm × 0.76 mm WLCSP4 footprint saves >70 % board area versus SOT753, critical for camera modules and wearables. |
Applications
| Smartphone Application Processor Core Rail | Bluetooth Low Energy (BLE) Radio Supply |
|---|---|
Use Scenario: Powers 2.2 V core logic of application processors during active and low-power modes in slim smartphone designs. IC Role / Device Role / Timing Role: Primary LDO delivering regulated 2.2 V with fast transient response and ultra-low noise to maintain SoC timing integrity. Use Value: 90 mV dropout extends usable battery voltage range; 30 µVRMS noise prevents digital jitter in CPU clock paths. | Use Scenario: Supplies clean 2.2 V to BLE radio ICs in wireless earbuds and IoT sensors where EMI sensitivity is critical. IC Role / Device Role / Timing Role: Low-noise, low-quiescent LDO providing stable bias to RF front-end and baseband circuits. Use Value: 55 dB PSRR blocks switching noise from shared PMIC; auto-discharge ensures safe BLE reset sequencing. |
| Digital Camera Image Sensor Bias | Portable Media Player Audio Codec Supply |
Use Scenario: Delivers 2.2 V to CMOS image sensor analog front-end in compact digital still cameras and action cams. IC Role / Device Role / Timing Role: Precision LDO supplying low-noise bias to pixel amplifiers and column ADCs. Use Value: 30 µVRMS noise directly limits image sensor readout noise floor; WLCSP4 size fits tight lens module PCBs. | Use Scenario: Powers stereo audio codec in portable media players requiring low THD+N and wide dynamic range. IC Role / Device Role / Timing Role: Ultra-low-noise LDO isolating codec analog supply from noisy digital subsystems. Use Value: Sub-30 µVRMS noise preserves SNR >105 dB; 0.1 µA shutdown current extends playback time in sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B222MR-G | 2.2 V fixed output, 300 mA, SOT-25 package (2.9 × 2.8 mm), 150 mV dropout, 45 dB PSRR @ 1 kHz | Larger footprint; lower PSRR and higher dropout reduce efficiency in battery-critical designs | Select when board space permits larger SMT package and PSRR >50 dB is not required. |
| Richtek RT9013-22GB | 2.2 V fixed output, 300 mA, DFN-6L (1.5 × 1.5 mm), 120 mV dropout, 60 dB PSRR @ 1 kHz, 25 µVRMS noise | Same 2.2 V output but uses 6-pin DFN; slightly better PSRR/noise but no auto-discharge function | Choose when lowest possible noise is prioritized and external discharge circuitry can be added. |
Compared with XC6210B222MR-G and RT9013-22GB, LD6836CX4/22P,315 uniquely combines WLCSP4 miniaturization, 90 mV dropout, auto-discharge, and 55 dB PSRR - making it optimal for space- and noise-constrained portable applications where rail sequencing and battery efficiency are critical.
Availability
LD6836CX4/22P,315 is available at Aetrix Electronics and suitable for smartphone power management, BLE radio supplies, digital camera sensor biasing, and portable media player audio subsystems requiring stable component supply with guaranteed long-term sourcing.
Supply support for LD6836CX4/22P,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 markets, with leadership in power management, RF, and embedded processing.
The LD6836 series was designed specifically for ultra-miniaturized, low-noise power delivery in portable electronics - targeting applications demanding sub-100 mV dropout, <35 µVRMS noise, and integrated auto-discharge in chip-scale packaging.
FAQ
What is the maximum input voltage rating for LD6836CX4/22P,315?
The absolute maximum input voltage on the IN pin of LD6836CX4/22P,315 is +6.0 V for transient conditions up to 4 ms. For continuous operation, the recommended input range is 2.3 V to 5.5 V. Exceeding 6.0 V risks permanent damage, and operation below 2.3 V prevents regulation at 2.2 V output. Always include input overvoltage protection if upstream sources may exceed these limits.
Does LD6836CX4/22P,315 require an external output capacitor, and what value is recommended?
Yes, LD6836CX4/22P,315 requires an external ceramic output capacitor for stability. The minimum value is 0.7 µF with ±30 % tolerance, and 1.0 µF is recommended. X7R dielectric is specified to meet full temperature range (−40 °C to +125 °C). Equivalent Series Resistance (ESR) must be between 5 mΩ and 500 mΩ. Using less than 0.7 µF risks oscillation and loss of regulation.
How does the auto-discharge function operate in LD6836CX4/22P,315?
When the EN pin is driven LOW (≤0.4 V), LD6836CX4/22P,315 activates an internal 100 Ω pull-down transistor between OUT and GND. This discharges the output capacitance to <10 % of 2.2 V within 300 µs, ensuring rapid rail collapse for safe power sequencing. The function is intrinsic to the "P" suffix and eliminates need for external discharge resistors or FETs.
What is the thermal resistance (Rth(j-a)) of LD6836CX4/22P,315, and how does it affect layout?
LD6836CX4/22P,315 has a typical junction-to-ambient thermal resistance of 130 K/W under standard two-layer PCB conditions. To achieve this, all four bumps must connect to large copper areas - especially GND - and avoid solder-mask coverage under the die. Adding thermal vias beneath GND and OUT bumps significantly reduces effective Rth(j-a) in production layouts.
Is LD6836CX4/22P,315 compatible with lead-free reflow processes?
Yes, LD6836CX4/22P,315 is RoHS-compliant, halogen-free, and qualified for lead-free reflow soldering per J-STD-020C. Its moisture sensitivity level (MSL) requires handling per packaging label; typical peak reflow temperature is 260 °C for ≤30 seconds. The WLCSP4 package is reflow-only - wave soldering is not permitted due to solder bump geometry.
LD6836CX4/22P,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):
- 2.2V
- 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)
LD6836CX4/22P,315 FAQ
1.How can I place an order for LD6836CX4/22P,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6836CX4/22P,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 LD6836CX4/22P,315 reliable?
The price and inventory of LD6836CX4/22P,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6836CX4/22P,315 is usually 5 days.
3.What payment methods are accepted for LD6836CX4/22P,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6836CX4/22P,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6836CX4/22P,315?
LD6836CX4/22P,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6836CX4/22P,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 LD6836CX4/22P,315?
For technical support, including LD6836CX4/22P,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6836CX4/22P,315 requirements.
6.How does Aetrix verify that LD6836CX4/22P,315 is sourced from the original manufacturer or authorized distributors?
All LD6836CX4/22P,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 LD6836CX4/22P,315 meets industry standards.
7.What is the process for return or replacement of LD6836CX4/22P,315?
All LD6836CX4/22P,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6836CX4/22P,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 LD6836CX4/22P,315 part is unused and in its original packaging.
Return procedure for LD6836CX4/22P,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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