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NXP Semiconductors LD6806CX4/28H,315
- Part No.:
- LD6806CX4/28H,315
- Manufacturer:
- NXP Semiconductors
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
LD6806CX4/28H,315.pdf
- Description:
- IC REG LINEAR 2.8V 200MA 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,171
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Product details
Overview
LD6806CX4/28H,315 from NXP Semiconductors is a 2.8 V, 200 mA ultra-low-dropout linear regulator in WLCSP4 package with 60 mV dropout at full load, 30 µVRMS output noise (10 Hz–100 kHz), and active-HIGH enable control-designed for power-sensitive mobile handset baseband and RF subsystems.
For engineers reviewing the LD6806CX4/28H,315 datasheet, LD6806CX4/28H,315 pinout, LD6806CX4/28H,315 application, or LD6806CX4/28H,315 equivalent, key selection criteria include its high-ohmic (3-state) output during disable, thermal shutdown at 160 °C, ±0.5 % output voltage accuracy at +25 °C, and compatibility with 1 µF X7R ceramic output capacitors.
Technical Context
The LD6806CX4/28H,315 uses a monolithic silicon LDO architecture with internal reference generator, current limiter, and thermal protection circuitry. Its high-ohmic output state when disabled (EN = LOW) isolates downstream circuitry without sinking current, supporting low-power retention modes in portable systems.
It operates across −40 °C to +85 °C ambient, maintains regulation with input as low as 2.3 V, and achieves 55 dB PSRR at 1 kHz-enabling clean supply generation for noise-sensitive analog blocks like ADCs and RF synthesizers in space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 2.8 V nominal, ±0.5 % tolerance at +25 °C - ensures stable bias for 2.8 V I/O rails and core logic in mobile SoCs. |
| Dropout voltage | 60 mV typical at 200 mA - enables operation with <2.86 V input, critical for battery-powered systems near end-of-discharge. |
| Noise (RMS) | 30 µV over 10 Hz–100 kHz - minimizes jitter in clock buffers and SNR degradation in audio/RF signal chains. |
| PSRR | −55 dB at 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding the LDO input. |
| Enable threshold | VIH = 1.4 V min, VIL = 0.4 V max - compatible with 1.8 V and 3.3 V GPIOs without level-shifting. |
| Quiescent current | 70–100 µA operating, 0.1–1.0 µA in shutdown - extends battery life in always-on sensor or standby circuits. |
| Thermal shutdown | 160 °C junction temperature with 20 K hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
LD6806CX4/28H,315 is housed in a wafer-level chip-scale package (WLCSP4) measuring 0.76 mm × 0.76 mm × 0.47 mm with 0.4 mm bump pitch and Pb-free, RoHS-compliant construction.
| 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 thermal and noise performance. |
| EN | Enable input (active HIGH) | Logic-controlled ON/OFF; pulls output to high-impedance state when LOW-enables power sequencing and system sleep modes. |
| OUT | Regulated output | Delivers 2.8 V to load; requires ≥1.0 µF X7R ceramic capacitor with ESR 5–500 mΩ for stability. |
| IN | Input supply | Accepts 2.3–5.5 V; benefits from local 1 µF input decoupling to suppress upstream ripple and transient spikes. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 60 mV at 200 mA enables >97 % efficiency at light-to-moderate loads and extends usable battery range. |
| Low-noise regulation | 30 µVRMS noise supports high-fidelity audio codecs and precision analog front-ends without external filtering. |
| Fast start-up | 200 µs turn-on time allows rapid wake-up from deep-sleep states in real-time responsive applications. |
| Integrated ESD protection | 10 kV HBM rating eliminates need for external TVS diodes on EN and OUT pins in handheld interfaces. |
| Thermal & current protection | Auto-recovery shutdown at 160 °C and foldback current limiting prevent latch-up and board-level failures under fault conditions. |
Applications
| Mobile Baseband Power | RF Front-End Biasing |
|---|---|
Use Scenario: Supplying 2.8 V to cellular modem baseband processors during active data transmission and idle monitoring. IC Role / Device Role / Timing Role: Primary low-noise, sequenced power rail delivering regulated voltage with fast enable response for burst-mode operation. Use Value: Maintains processor timing integrity and reduces digital noise coupling into adjacent RF sections via 55 dB PSRR and 30 µV noise floor. | Use Scenario: Biasing power amplifiers and low-noise amplifiers in LTE/Wi-Fi front-end modules. IC Role / Device Role / Timing Role: Clean, isolated 2.8 V source enabling precise gain control and minimizing AM-to-PM distortion. Use Value: High-ohmic disable state prevents reverse current flow during PA shutdown, preserving battery charge and preventing signal leakage. |
| Portable Audio Codec Supply | Wearable Sensor Hub Core Rail |
Use Scenario: Powering stereo audio DACs and headphone drivers in Bluetooth earbuds with strict THD+N requirements. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from noisy digital domains using dedicated LDO stage. Use Value: 30 µVRMS noise directly translates to >105 dB SNR, meeting Hi-Res Audio certification thresholds. | Use Scenario: Providing 2.8 V core voltage to ultra-low-power microcontrollers and inertial measurement units in fitness trackers. IC Role / Device Role / Timing Role: Always-on regulated rail supporting sub-µA sleep currents and <200 µs wake-up latency. Use Value: 0.1–1.0 µA shutdown current and 200 µs startup minimize energy overhead per sensor sampling event. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0528DBVR | 200 mA, 2.8 V fixed, 170 mV dropout at 200 mA, SOT-23-5 package | Larger footprint, higher dropout, no high-ohmic disable - unsuitable for bidirectional isolation or tight battery headroom | Select when board space permits larger package and thermal budget allows higher dropout loss. |
| MCP1700T-2802E/TT | 250 mA, 2.8 V fixed, 175 mV dropout at 250 mA, SOT-23-3 package, no enable pin | Uncontrolled shutdown (no EN), higher dropout, no thermal shutdown - lacks sequencing and fault protection | Choose only for simple, non-sequenced, cost-sensitive applications without safety-critical thermal constraints. |
Compared with TPS7A0528DBVR and MCP1700T-2802E/TT, LD6806CX4/28H,315 delivers superior efficiency in battery-limited designs due to its 60 mV dropout, adds system-level reliability via thermal shutdown and 3-state disable, and enables compact integration through its 0.76 mm × 0.76 mm WLCSP4 footprint.
Availability
LD6806CX4/28H,315 is available at Aetrix Electronics and suitable for mobile handset power management, wearable sensor hub designs, and portable audio subsystems requiring stable component supply with guaranteed long-term availability.
Supply support for LD6806CX4/28H,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.
The LD6806 series belongs to NXP's ultra-low-noise, miniaturized LDO portfolio, engineered specifically for space-constrained portable electronics demanding high efficiency, low EMI, and robust protection features.
FAQ
What is the maximum input voltage rating for LD6806CX4/28H,315?
The absolute maximum input voltage on the IN pin of LD6806CX4/28H,315 is +6.0 V for 4 ms transients, with recommended continuous operation between 2.3 V and 5.5 V. Exceeding 6.0 V-even briefly-risks permanent damage. The device's 55 dB PSRR at 1 kHz helps reject ripple within this input range, making it suitable for use after buck converters or directly from Li-ion batteries.
Does LD6806CX4/28H,315 require an external output capacitor, and what type is recommended?
Yes, LD6806CX4/28H,315 requires a minimum 1.0 µF X7R ceramic capacitor on the OUT pin for stability, with ESR between 5 mΩ and 500 mΩ. The datasheet specifies ±30 % capacitance tolerance over −40 °C to +125 °C. Using lower-ESR or smaller-value capacitors may cause oscillation or degraded transient response, while tantalum or aluminum electrolytics are not recommended due to ESR and temperature limitations.
How does the high-ohmic output state function during disable on LD6806CX4/28H,315?
When the EN pin is driven LOW, LD6806CX4/28H,315 places its OUT pin in a high-impedance (3-state) condition-neither sourcing nor sinking significant current. This isolates downstream circuitry, prevents back-driving, and avoids unintended power-up of connected ICs. Unlike low-ohmic variants (e.g., LD6806CX4/28P), it does not pull OUT to GND, making it ideal for shared-bus or multi-rail power domains where voltage contention must be avoided.
What is the thermal resistance (Rth(j-a)) of LD6806CX4/28H,315, and how does it affect layout?
LD6806CX4/28H,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 internal layers should include thermal vias beneath the package. Poor thermal layout can raise Rth(j-a) significantly, triggering thermal shutdown at lower loads. The 160 °C shutdown threshold provides protection but underscores the need for proper copper pour and via placement.
Can LD6806CX4/28H,315 be used with a 1.8 V enable signal?
Yes, LD6806CX4/28H,315 is fully compatible with 1.8 V GPIOs: its EN pin requires VIH ≥ 1.4 V to activate and tolerates VIN up to 5.5 V, so a 1.8 V logic HIGH meets the threshold with margin. No level shifter is needed. The device draws only 0.1–1.0 µA in shutdown, making it suitable for direct connection to low-power microcontroller outputs without loading concerns.
LD6806CX4/28H,315 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 4-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- 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):
- 0.1V @ 200mA
- Current - Output:
- 200mA
- 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 (0.78x0.78)
LD6806CX4/28H,315 FAQ
1.How can I place an order for LD6806CX4/28H,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6806CX4/28H,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 LD6806CX4/28H,315 reliable?
The price and inventory of LD6806CX4/28H,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6806CX4/28H,315 is usually 5 days.
3.What payment methods are accepted for LD6806CX4/28H,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6806CX4/28H,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6806CX4/28H,315?
LD6806CX4/28H,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6806CX4/28H,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 LD6806CX4/28H,315?
For technical support, including LD6806CX4/28H,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6806CX4/28H,315 requirements.
6.How does Aetrix verify that LD6806CX4/28H,315 is sourced from the original manufacturer or authorized distributors?
All LD6806CX4/28H,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 LD6806CX4/28H,315 meets industry standards.
7.What is the process for return or replacement of LD6806CX4/28H,315?
All LD6806CX4/28H,315 units undergo pre-shipment inspection (PSI). If there is an issue with LD6806CX4/28H,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 LD6806CX4/28H,315 part is unused and in its original packaging.
Return procedure for LD6806CX4/28H,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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