My Inquiry
My Account
Nexperia USA Inc. LD6805K/33H,115
- Part No.:
- LD6805K/33H,115
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
LD6805K/33H,115.pdf
- Description:
- NEXPERIA LD6805K/33H - FIXED POS
- Quantity:
- Payment:
- Shipping:
Inventory:60,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LD6805K/33H,115 from NXP Semiconductors is a 3.3 V fixed-output linear voltage regulator with 500 mA output current, ±2% output voltage tolerance, and thermal shutdown protection; used in low-noise power rails for microcontroller core supplies and sensor interface circuits.
For engineers reviewing the LD6805K/33H,115 datasheet, LD6805K/33H,115 pinout, LD6805K/33H,115 application, or LD6805K/33H,115 equivalent, key selection criteria include dropout voltage at full load, quiescent current in standby mode, PSRR at 1 kHz, thermal resistance (RθJA), and compatibility with ceramic output capacitors.
Technical Context
This regulator employs a PNP pass transistor architecture enabling low dropout voltage (450 mV at 500 mA) and stable operation with 1 µF ceramic output capacitance. It integrates internal current limiting and thermal foldback to prevent damage during overload or high-temperature conditions.
The device operates over an input voltage range of 2.5 V to 16 V and maintains regulation down to 1.5 V input when output current is reduced. Its ground pin current remains below 100 µA across temperature and load, supporting battery-powered system efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2%; ensures consistent logic-level compatibility with 3.3 V I/O domains. |
| Max Output Current | 500 mA; supports mid-power MCU cores and peripheral clusters without external boost. |
| Dropout Voltage | 450 mV at 500 mA; enables operation from single-cell Li-ion or 5 V rail with margin. |
| Quiescent Current | 70 µA typical; minimizes standby power loss in always-on sensor nodes. |
| PSRR @ 1 kHz | 65 dB; suppresses switching noise from upstream DC-DC converters feeding the LDO. |
| Thermal Resistance RθJA | 120 °C/W (SO8 package); defines maximum power dissipation before thermal shutdown triggers. |
Pinout & Package
Package: SO8 (Small Outline, 8-pin, 150 mil width). Moisture Sensitivity Level (MSL) 3 per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 2.5–16 V unregulated input; requires local 1 µF ceramic decoupling. |
| 2 (GND) | Ground reference | Low-impedance return path; must be routed separately from high-current digital grounds. |
| 3 (OUT) | Regulated output | Delivers stable 3.3 V; requires 1 µF ceramic capacitor with ESR < 100 mΩ. |
| 4 (EN) | Enable control input | Active-high logic input; pulls output to high-impedance state when low. |
| 5 (NC) | No connect | Internally unused; must remain unconnected per datasheet. |
| 6 (NC) | No connect | Internally unused; must remain unconnected per datasheet. |
| 7 (NC) | No connect | Internally unused; must remain unconnected per datasheet. |
| 8 (NC) | No connect | Internally unused; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 70 µA typical enables >1-year battery life in wake-on-event sensor nodes. |
| Ceramic capacitor compatible | Stable with 1 µF X7R ceramic output cap; eliminates need for costly tantalum parts. |
| Integrated enable function | EN pin allows system-level power sequencing and deep-sleep mode control. |
| Thermal shutdown with hysteresis | Shuts down at 160 °C and resumes at 140 °C; prevents thermal runaway in enclosed enclosures. |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting via BLE every 5 minutes. IC Role / Device Role / Timing Role: Primary 3.3 V supply for MCU, BLE radio, and analog front-end. Use Value: 70 µA quiescent current extends AA battery life beyond 18 months; 450 mV dropout preserves runtime as battery discharges to 3.7 V. | Use Scenario: Handheld ECG device with OLED display and USB charging. IC Role / Device Role / Timing Role: Clean 3.3 V rail for precision ADC and touch controller, isolated from noisy USB charger path. Use Value: 65 dB PSRR at 1 kHz rejects ripple from buck converter powering display backlight. |
| Smart Meter Communication Module | PLC Digital Input Card |
Use Scenario: NB-IoT modem module operating in utility meter cabinets with wide ambient temperature range. IC Role / Device Role / Timing Role: Regulated supply for RF transceiver and secure element IC. Use Value: Thermal shutdown with 20 °C hysteresis prevents lockup during summer cabinet temperatures exceeding 70 °C. | Use Scenario: 24 V industrial input card converting field signals to 3.3 V logic for FPGA processing. IC Role / Device Role / Timing Role: Post-regulator after primary 5 V DC-DC, providing noise-sensitive logic supply. Use Value: ±2% output tolerance guarantees reliable level-shifting between 24 V field side and 3.3 V controller side. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO (Microchip) | 250 mA max output, 6 µA quiescent current, SOT-23-5 package | Limited to ultra-low-power sensors; insufficient for BLE radio peak current | Select when standby current dominates design and load never exceeds 250 mA. |
| TLS850B2TE/V1 (Infineon) | 500 mA, 35 µA IQ, integrated watchdog and reset generator | Includes safety features for automotive ECUs; higher cost and qualification overhead | Choose only if ASIL-B compliance and system monitoring functions are required. |
Compared with MCP1700-3302E/TO and TLS850B2TE/V1, LD6805K/33H,115 balances medium output current, low dropout, and industrial-grade thermal behavior without automotive qualification overhead or severe current limitation.
Availability
LD6805K/33H,115 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, and smart meter communication modules requiring stable component supply and long-term manufacturability.
Supply support for LD6805K/33H,115 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
LD6805K/33H,115 belongs to NXP's LD68xx family of high-PSRR, low-dropout regulators designed specifically for noise-sensitive analog and mixed-signal subsystems in harsh industrial environments.
FAQ
What is the minimum input voltage required for regulation at full 500 mA load?
The LD6805K/33H,115 requires a minimum input voltage of 3.75 V to maintain 3.3 V output at 500 mA load, based on its 450 mV dropout specification. Below this, output voltage drops linearly with input; operation below 2.5 V input is not functional.
Can the EN pin be left floating in a simple always-on configuration?
No - the EN pin must be tied to IN or a clean 3.3 V rail via a pull-up resistor. Floating EN may cause erratic startup or oscillation due to noise susceptibility; NXP recommends a 100 kΩ pull-up to IN for default-enable operation.
Is an input capacitor required, and what value is recommended?
Yes - a minimum 1 µF X7R ceramic capacitor is required at the IN pin, placed within 5 mm of pins 1 and 2. This stabilizes the input impedance and prevents oscillation under fast transient loads; larger values (e.g., 4.7 µF) improve surge immunity but are not mandatory.
Does LD6805K/33H,115 support reverse-voltage protection?
No - the device lacks internal reverse-battery or reverse-polarity protection. Applying negative voltage to IN or OUT relative to GND can damage the IC. External protection (e.g., series Schottky diode or dedicated protection IC) is required in systems prone to wiring reversal.
LD6805K/33H,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 4-UDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Transient Voltage
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1010C-4
LD6805K/33H,115 FAQ
1.How can I place an order for LD6805K/33H,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for LD6805K/33H,115 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 LD6805K/33H,115 reliable?
The price and inventory of LD6805K/33H,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LD6805K/33H,115 is usually 5 days.
3.What payment methods are accepted for LD6805K/33H,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LD6805K/33H,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LD6805K/33H,115?
LD6805K/33H,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LD6805K/33H,115 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 LD6805K/33H,115?
For technical support, including LD6805K/33H,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LD6805K/33H,115 requirements.
6.How does Aetrix verify that LD6805K/33H,115 is sourced from the original manufacturer or authorized distributors?
All LD6805K/33H,115 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 LD6805K/33H,115 meets industry standards.
7.What is the process for return or replacement of LD6805K/33H,115?
All LD6805K/33H,115 units undergo pre-shipment inspection (PSI). If there is an issue with LD6805K/33H,115, 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 LD6805K/33H,115 part is unused and in its original packaging.
Return procedure for LD6805K/33H,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LD6805K/33H,115 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
