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NXP Semiconductors LD6816CX4/12H,315
- Part No.:
- LD6816CX4/12H,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6816CX4/12H,315.pdf
- Description:
- IC REG LINEAR 1.2V 150MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
LD6816CX4/12H from NXP Semiconductors is a 1.2 V fixed-output, 150 mA ultra-low-dropout linear regulator in WLCSP4 package, featuring 45 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 LD6816CX4/12H datasheet, LD6816CX4/12H pinout, LD6816CX4/12H application, or LD6816CX4/12H equivalent, key selection criteria include its 2.3–5.5 V input range, 55 dB PSRR at 1 kHz, <150 µs startup time, ±0.5% output accuracy at +25°C, and integrated over-temperature and current limiting protection.
Technical Context
The LD6816CX4/12H employs a PMOS pass transistor architecture enabling ultra-low dropout voltage and stable operation with only 1.0 µF ceramic output capacitance. Its enable input (active HIGH) controls a high-impedance output state-no internal pull-down-making it suitable for systems requiring isolation of downstream circuitry during shutdown.
Internal bandgap reference, error amplifier, and thermal/current protection circuits operate across −40°C to +85°C ambient, with junction temperature limited to +125°C. The device achieves 55 dB power supply rejection at 1 kHz while maintaining low quiescent current (70–100 µA active, 0.1 µA shutdown) and 30 µVRMS noise performance critical for analog and RF supply domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±0.5% at +25°C; ±3% over −30°C to +85°C - ensures stable core logic or sensor biasing without external feedback. |
| Dropout Voltage | 45 mV typical at 150 mA - enables regulation from 1.245 V input, maximizing battery runtime in 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/RF subsystems. |
| Output Noise | 30 µVRMS (10 Hz–100 kHz) - meets low-noise requirements for ADC references, audio codecs, and precision sensors. |
| Startup Time | <150 µs to 95% of 1.2 V - supports fast wake-up sequences in always-on mobile peripherals and IoT edge nodes. |
| Quiescent Current | 70–100 µA under load; 0.1 µA in shutdown - minimizes standby power loss in battery-backed real-time clocks and memory retention rails. |
| Enable Threshold | VIH = 1.1 V min; VIL = 0.4 V max - compatible with 1.8 V and 3.3 V GPIOs without level-shifting. |
Pinout & Package
Package: Wafer-Level Chip-Scale Package (WLCSP4), 0.76 mm × 0.76 mm × 0.47 mm, 0.4 mm pitch, 4 solder bumps (2×2), Pb-free/RoHS/halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (A1) | Supply ground reference | Primary return path for regulator current; must connect to solid ground plane for thermal and noise performance. |
| EN (A2) | Active-HIGH enable input | Drives internal control logic; ≥1.1 V enables regulation; ≤0.4 V disables output into high-ohmic state. |
| OUT (B1) | Regulated 1.2 V output | Delivers up to 150 mA; requires ≥1.0 µF X7R ceramic capacitor with 5–500 mΩ ESR for stability. |
| IN (B2) | Input voltage supply | Accepts 2.3–5.5 V; bypass with local 1 µF capacitor recommended to suppress high-frequency ripple. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 45 mV at 150 mA enables operation from near-threshold input voltages, extending usable battery range. |
| Low-noise regulation | 30 µVRMS output noise supports noise-sensitive analog blocks without additional filtering. |
| High PSRR | 55 dB at 1 kHz rejects ripple from noisy switchers, simplifying multi-rail power architecture design. |
| Fast transient response | <150 µs startup and controlled load regulation (<0.01 %/mA) maintain system timing integrity during mode transitions. |
| Thermal & current protection | Integrated shutdown at 160°C (20 K hysteresis) and current limiting prevent damage during fault conditions. |
Applications
| Smartphone Core Logic Supply | Digital Still Camera Sensor Bias |
|---|---|
Use Scenario: Powering ARM Cortex-M core voltage rail in compact smartphone SoC subsystems where space and efficiency are constrained. IC Role / Device Role / Timing Role: Primary LDO delivering clean, regulated 1.2 V to processor I/O and memory interface blocks. Use Value: 45 mV dropout extends battery life by >8% versus standard LDOs; 30 µVRMS noise prevents digital jitter in high-speed data paths. |
Use Scenario: Providing stable bias to CMOS image sensor analog front-end (AFE) in ultra-thin digital cameras. IC Role / Device Role / Timing Role: Low-noise post-regulator for sensor analog supply, decoupling from noisy main PMIC rails. Use Value: 55 dB PSRR attenuates DC-DC switching artifacts; ±0.5% accuracy ensures consistent pixel response across temperature. |
| Portable Media Player Audio Codec | Personal Navigation Device GPS Front-End |
Use Scenario: Supplying reference and bias voltages to stereo audio DAC/ADC in battery-powered MP3 players. IC Role / Device Role / Timing Role: Dedicated low-noise LDO for audio signal chain, isolated via EN control during playback pause. Use Value: 30 µVRMS noise eliminates audible hiss; high-ohmic disable prevents signal leakage into powered-down codec sections. |
Use Scenario: Regulating LNA and mixer supply in miniaturized GPS receivers embedded in handheld navigation units. IC Role / Device Role / Timing Role: Precision 1.2 V rail for RF front-end ICs requiring minimal phase noise contribution. Use Value: Ultra-low dropout allows direct use of partially discharged Li-ion cells; 55 dB PSRR preserves GPS signal SNR in electrically noisy environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B122MR-G | 1.2 V fixed, 150 mA, 65 mV dropout (at 100 mA), SOT-25 package (2.9 × 2.8 mm) | Larger footprint; higher dropout reduces usable battery range; no integrated thermal shutdown | Select when board space permits larger package and thermal protection is handled externally. |
| Richtek RT9013-12GB | 1.2 V fixed, 300 mA, 250 mV dropout (at 300 mA), SOT-23-5 package | Higher current capability but 5.5× higher dropout; 60 µVRMS noise; no high-ohmic disable | Choose only if higher output current is required and noise/dropout trade-offs are acceptable. |
Compared with XC6219B122MR-G and RT9013-12GB, the LD6816CX4/12H delivers superior battery efficiency via 45 mV dropout, lower noise for analog integrity, and true 3-state disable-critical for power-gated mobile subsystems where leakage and signal coupling must be minimized.
Availability
LD6816CX4/12H is available at Aetrix Electronics and suitable for smartphone power management, portable camera sensor biasing, and GPS front-end regulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LD6816CX4/12H 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 leader focused on secure connectivity solutions for automotive, industrial, and consumer applications, with deep expertise in power management ICs.
The LD6816 series was designed specifically for ultra-miniaturized portable electronics demanding ultra-low dropout, low noise, and high integration in wafer-level chip-scale packages.
FAQ
What is the maximum input voltage rating for LD6816CX4/12H?
The LD6816CX4/12H has an absolute maximum input voltage of +6.0 V for 4 ms transients, with recommended operating range of 2.3 V to 5.5 V. Exceeding 5.5 V continuously risks exceeding thermal limits or triggering overvoltage protection not specified in the datasheet. Always maintain VIN within 2.3–5.5 V for reliable LD6816CX4/12H operation.
Does LD6816CX4/12H include reverse-current protection?
No, the LD6816CX4/12H does not integrate reverse-current protection. When input voltage falls below output voltage (e.g., during battery swap or hot-plug events), current may flow backward from OUT to IN through the PMOS pass device. External diode or ideal diode controller is required if reverse-current blocking is needed in the application using LD6816CX4/12H.
What output capacitor is required for stable operation of LD6816CX4/12H?
The LD6816CX4/12H requires a minimum 0.7 µF X7R ceramic capacitor at the OUT pin, with recommended value of 1.0 µF and ESR between 5 mΩ and 500 mΩ. Using capacitors outside this range may cause instability or excessive overshoot during load transients. This requirement applies directly to LD6816CX4/12H and is validated per Section 10.1 of its datasheet.
How does the high-ohmic disable state of LD6816CX4/12H differ from auto-discharge variants?
The LD6816CX4/12H enters a true high-impedance (3-state) output during disable-no internal pull-down-leaving OUT floating. In contrast, LD6816CX4/12P and LD6816CX4/C12P integrate a ~100 Ω pull-down transistor to actively discharge the output node. This distinction is critical for LD6816CX4/12H users needing isolation rather than rapid discharge in power-gated domains.
Is LD6816CX4/12H suitable for automotive applications?
No, LD6816CX4/12H is qualified per NX1-00023 for consumer applications only, with operating ambient temperature range of −40°C to +85°C and junction limit of +125°C-insufficient for AEC-Q100 Grade 2 (−40°C to +105°C) or Grade 1 (−40°C to +125°C) automotive requirements. For automotive use, consider NXP's automotive-grade LDOs such as the TDA3664 or MC33VR500 instead of LD6816CX4/12H.
LD6816CX4/12H,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):
- 0.075V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 250 µA
- PSRR:
- 55dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Transient Voltage
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-WLCSP (0.76x0.76)
LD6816CX4/12H,315 FAQ
1.How can I place an order for LD6816CX4/12H,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6816CX4/12H,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 LD6816CX4/12H,315 reliable?
The price and inventory of LD6816CX4/12H,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6816CX4/12H,315 is usually 5 days.
3.What payment methods are accepted for LD6816CX4/12H,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6816CX4/12H,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6816CX4/12H,315?
LD6816CX4/12H,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6816CX4/12H,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 LD6816CX4/12H,315?
For technical support, including LD6816CX4/12H,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6816CX4/12H,315 requirements.
6.How does Aetrix verify that LD6816CX4/12H,315 is sourced from the original manufacturer or authorized distributors?
All LD6816CX4/12H,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 LD6816CX4/12H,315 meets industry standards.
7.What is the process for return or replacement of LD6816CX4/12H,315?
All LD6816CX4/12H,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6816CX4/12H,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 LD6816CX4/12H,315 part is unused and in its original packaging.
Return procedure for LD6816CX4/12H,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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