ADP1706ACPZ-3.3-R7 Analog Devices Integrated Circuit (Small Outline No-lead) In Stock
Analog Devices ADP1706ACPZ-3.3-R7 is a fixed 3.3 V, 1 A low-dropout linear regulator in a compact 8-lead LFCSP package. Accepts 3.9 V to 5.5 V input with 345 mV typical dropout, delivering clean regulated output for digital and mixed-signal systems. Available in stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- ADP1706ACPZ-3.3-R7 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 3.3 V output at 1 A load with only 345 mV typical dropout voltage from a 3.9 V to 5.5 V input, ideal for 5 V to 3.3 V single-step conversion
- Compact 8-lead LFCSP (CP-8-13) package reduces PCB footprint compared to SOT-223 alternatives while maintaining 1 A current capability
- Low noise and high PSRR design suitable for powering RF front-ends, ADCs, and sensitive analog circuits alongside digital logic
Applications
The ADP1706ACPZ-3.3-R7 is commonly used to generate a clean 3.3 V rail from a 5 V USB or wall-adapter supply in embedded systems, FPGAs, and microcontroller boards. Its 1 A output supports multiple digital peripherals simultaneously, including Ethernet PHYs, flash memory, and wireless modules. The low-noise output characteristic makes it well suited for powering analog-to-digital converters and RF transceivers where power supply rejection is critical.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | CP-8-13 |
| YTEOL | 10 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.63V |
| Dropout Voltage1-Nom | 0.345V |
| Input Voltage Absolute-Max | 6V |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 3.9V |
| JESD-30 Code | S-XQCC-N8 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.00528% |
| Load Regulation-Max | 0.03267% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1A |
| Output Voltage1-Max | 3.382V |
| Output Voltage1-Min | 3.217V |
| Output Voltage1-Nom | 3.3V |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | SOLCC8,.11,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 2.5% |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ADP1706ACPZ-3.3-R7:
suggested
Frequently Asked Questions
What dropout voltage does the ADP1706ACPZ-3.3-R7 require at full 1 A load to stay in regulation?
The ADP1706ACPZ-3.3-R7 has a typical dropout voltage of 345 mV and a maximum of 630 mV at 1 A output. Therefore the minimum input voltage required to maintain the fixed 3.3 V output in regulation is 3.645 V typical and up to 3.93 V worst case. This is well within the 3.9 V minimum input specification, ensuring reliable 3.3 V regulation from any 5 V source that sags no lower than 4 V under load.
How does the LFCSP-8 package of ADP1706ACPZ-3.3-R7 compare to SOT-223 for thermal dissipation in a 1 A design?
The 8-lead LFCSP (CP-8-13) package uses an exposed thermal pad on the underside, allowing heat to be conducted directly into PCB copper pours. At 1 A with a 5 V input and 3.3 V output, approximately 1.7 W is dissipated. The exposed pad reduces junction-to-board thermal resistance compared to a standard SOT-223, enabling adequate cooling with a modest 1 to 2 inch squared copper area without external heatsinks.
Can ADP1706ACPZ-3.3-R7 power an ESP32 Wi-Fi module and its associated flash memory simultaneously from a 5 V USB supply?
Yes, the ADP1706ACPZ-3.3-R7 can power an ESP32 plus external SPI flash and PSRAM simultaneously. The ESP32 draws up to 500 mA during active Wi-Fi transmit, and SPI flash plus PSRAM add approximately 50 mA to 100 mA, keeping total load well below the 1 A rated output. The fixed 3.3 V output requires only a 3.9 V minimum input, leaving ample margin from a 5 V USB VBUS rail that typically stays above 4.75 V.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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