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Analog Devices Inc. ADP2127ACNZ-1.20R7
- Part No.:
- ADP2127ACNZ-1.20R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-SMD, No Lead
- Datasheet:
-
ADP2127ACNZ-1.20R7.pdf
- Description:
- IC REG BUCK 1.2V 500MA 6EWLP
- Quantity:
- Payment:
- Shipping:
Inventory:1,832
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Product details
Overview
ADP2127ACNZ-1.20R7 from Analog Devices is a fixed-output, synchronous step-down DC-DC converter optimized for ultra-thin portable systems. It delivers 500 mA continuous output at 1.20 V from 2.1–5.5 V input, operates at 6 MHz switching frequency with spread-spectrum EMI reduction, and features pin-selectable auto/PWM mode control via the MODE pin - used in camera modules and image stabilization subsystems.
For engineers reviewing the ADP2127ACNZ-1.20R7 datasheet, ADP2127ACNZ-1.20R7 pinout, ADP2127ACNZ-1.20R7 application, or ADP2127ACNZ-1.20R7 equivalent, key selection considerations include its 0.200 mm max height EWLP package, 0.3 μA shutdown current, external clock enable (6–27 MHz), internal soft start, and output-to-ground short-circuit protection with automatic recovery.
Technical Context
The ADP2127ACNZ-1.20R7 implements a hybrid voltage-mode PWM control architecture with cycle-by-cycle peak current limiting and internal compensation. Its 6 MHz fixed-frequency operation enables use of 1.0 µH multilayer inductors and 2.2 µF ceramic capacitors while spread-spectrum modulation reduces EMI peaks across a ±200 kHz band.
In auto mode (MODE = low), it dynamically transitions between PWM and PFM based on load: PWM maintains regulation under medium/heavy loads (≥250 mA typical), while PFM reduces effective switching frequency and quiescent current (<500 µA) at light loads to maximize battery life - critical for always-on camera modules and digital audio subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.20 V ±2% in PWM mode; ±3% in PFM mode - ensures stable core supply for low-voltage processors and image sensors. |
| Max Output Current | 500 mA continuous - sufficient to power dual-core application processors or high-resolution CMOS image sensor interfaces. |
| Input Voltage Range | 2.1 V to 5.5 V - supports single-cell Li+/Li-polymer, three-cell alkaline, or NiMH batteries without pre-regulation. |
| Switching Frequency | 6 MHz nominal (4.8–6.8 MHz range) with spread spectrum - enables <1.0 mm² total passive footprint and meets CISPR-22 Class B radiated emissions limits. |
| Shutdown Current | 0.3 µA typical - preserves battery charge during system sleep states in mobile phones and DSCs. |
| Package Height | 0.200 mm maximum (6-pad EWLP) - fits within 0.4 mm Z-height constraints of slim smartphone camera modules. |
| Thermal Shutdown | 146°C activation with 13°C hysteresis - protects die during sustained 500 mA operation in thermally constrained PCB layouts. |
Pinout & Package
ADP2127ACNZ-1.20R7 uses a 6-pad Embedded Wafer Level Package (EWLP) with 0.200 mm max height and 0.4 mm pitch. The package is bottom-side terminated with solder bumps; no exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | MODE | Logic input selecting auto (PFM+PWM) or forced PWM mode; must be pulled high or low - floating causes undefined behavior. |
| A2 | VIN | Main power input (2.1–5.5 V); supplies internal LDOs and gate drivers - requires local 2.2 µF ceramic decoupling. |
| B1 | SW | Switch node connecting internal PMOS/NMOS FETs to external inductor - high dv/dt node requiring tight layout and ground shielding. |
| B2 | EXTCLK | Enable input accepting 6–27 MHz clock or logic-high signal (≥1.3 V); absence disables regulator and drops VIN current to 0.3 µA. |
| C1 | FB | Feedback input tied directly to output capacitor; sets regulation point - no external resistor divider needed for fixed 1.20 V version. |
| C2 | GND | Analog ground reference for feedback and internal bias circuits - must connect to low-impedance PCB ground plane beneath package. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated PMOS/NMOS FETs eliminate external Schottky diode - improves light-load efficiency by >15% vs. asynchronous designs. |
| Internal soft start | Gradual peak current ramp-up prevents input inrush - eliminates need for external inrush limiters in battery-powered systems. |
| Output short-circuit protection | Auto-retry with 450 µs off-time and soft-start restart - limits fault power to <50 mW and enables recovery without host intervention. |
| Undervoltage lockout | 1.9 V rising / 1.5 V falling threshold with 400 mV hysteresis - prevents erratic startup during battery brownout or cold-temperature discharge. |
| Spread-spectrum modulation | Controlled ±200 kHz frequency dither around 6 MHz center - reduces peak EMI by up to 10 dB, easing FCC/CE compliance in handheld devices. |
Applications
| Camera Module Power | Image Stabilization System |
|---|---|
Use Scenario: Powers CIS image sensor and ISP core logic in smartphone front/rear cameras with strict Z-height limits. IC Role / Device Role / Timing Role: Primary 1.20 V core regulator delivering 500 mA with <200 µs startup time and <10 mV ripple under dynamic load. Use Value: 0.200 mm EWLP height enables integration into <0.4 mm camera bump assemblies; spread spectrum avoids interference with RF receivers. |
Use Scenario: Supplies gyro/accelerometer interface and actuator driver ICs in optical image stabilization (OIS) modules. IC Role / Device Role / Timing Role: Low-noise, fast-transient 1.20 V source supporting 100 mA burst loads during lens correction events. Use Value: Auto mode extends battery runtime during idle periods; PFM-to-PWM transition <5 µs ensures zero-latency response to motion detection. |
| Digital Audio Codec Supply | Mobile Phone Application Processor Core |
Use Scenario: Provides clean 1.20 V rail for stereo audio codecs in Bluetooth headsets and portable speakers. IC Role / Device Role / Timing Role: Secondary regulated supply with <50 mVpp ripple at 100 Hz–20 kHz bandwidth - meets SNR >100 dB requirements. Use Value: Internal compensation and 6 MHz operation minimize output filter size; shutdown current <0.3 µA preserves standby battery life. |
Use Scenario: Delivers core voltage to ARM Cortex-A series processors in entry-level smartphones during active UI rendering. IC Role / Device Role / Timing Role: High-efficiency buck converter maintaining 1.20 V ±2% under 50–500 mA dynamic load steps. Use Value: 6 MHz switching allows use of 1.0 µH inductor - reduces solution size by 40% vs. 2.5 MHz alternatives while sustaining >85% efficiency at 300 mA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | Fixed 1.2 V output, 600 mA, 3–6 MHz adjustable frequency, 0.65 mm height DSBGA | Higher max current but larger package - unsuitable for sub-0.4 mm Z-height camera modules | Choose when higher output current and adjustable frequency outweigh height constraints. |
| RT8059ZSP | 1.2 V fixed, 500 mA, 2.5 MHz, 0.55 mm height WDFN-6 | Lower switching frequency increases inductor size; no spread spectrum - higher EMI risk near cellular bands | Acceptable only in non-RF-sensitive industrial portable devices with relaxed EMI and height requirements. |
Compared with TPS62231DRYR and RT8059ZSP, ADP2127ACNZ-1.20R7 uniquely combines 0.200 mm height, 6 MHz spread-spectrum operation, and 0.3 µA shutdown - making it the only viable choice for space-constrained, battery-sensitive camera and audio subsystems requiring certified EMI performance.
Availability
ADP2127ACNZ-1.20R7 is available at Aetrix Electronics and suitable for mobile phones, digital still/video cameras, and camera modules requiring stable component supply across long production lifecycles and rapid design iterations.
Supply support for ADP2127ACNZ-1.20R7 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.
The ADP2127ACNZ-1.20R7 belongs to Analog Devices' ultralow-profile DC-DC converter family, engineered specifically for battery-powered portable electronics where board area, efficiency, and EMI compliance are non-negotiable.
FAQ
What is the maximum recommended PCB temperature rise for continuous 500 mA operation of the ADP2127ACNZ-1.20R7?
The ADP2127ACNZ-1.20R7 has a junction-to-ambient thermal resistance (θJA) of 105°C/W on a 4-layer board. At 500 mA output and 3.6 V input, power dissipation is ~180 mW. To keep junction temperature ≤125°C at 85°C ambient, PCB temperature rise must stay below 35°C - achieved using 2 oz copper, thermal vias under the GND pad, and ≥2 cm² copper pour.
Does the ADP2127ACNZ-1.20R7 require an external resistor divider on the FB pin?
No. The ADP2127ACNZ-1.20R7 is the fixed 1.20 V output variant - the feedback divider is internal. The FB pin connects directly to the output capacitor's positive terminal per the typical application circuit. Adding external resistors would disrupt regulation and is not supported.
Can the ADP2127ACNZ-1.20R7 be enabled using only a logic-high signal on EXTCLK, without an external clock?
No. The ADP2127ACNZ-1.20R7 datasheet explicitly states that "logic high enable is only available on certain models." This part number (ADP2127ACNZ-1.20R7) is specified for external clock enable only (6–27 MHz). Applying a static logic-high signal will not activate regulation - confirmed by timing diagram Figure 3 and Pin Function Table 4.
What is the minimum input voltage required for the ADP2127ACNZ-1.20R7 to maintain regulation at 500 mA?
The ADP2127ACNZ-1.20R7 requires ≥2.1 V input to sustain 500 mA output while maintaining 1.20 V ±2% regulation. Below 2.1 V, undervoltage lockout activates at 1.9 V (rising threshold), disabling switching. At exactly 2.1 V input, efficiency drops to ~78% (per Figure 5), but regulation holds until the UVLO threshold is crossed.
How does the ADP2127ACNZ-1.20R7 behave during an output short-circuit event?
When output voltage falls below 0.52 V (SCP threshold), the ADP2127ACNZ-1.20R7 disables switching for 450 µs, then initiates soft start. This cycle repeats until the short is removed. During each off period, VIN current drops to <0.3 µA, limiting fault power to <50 mW - protecting both the IC and external components without requiring host firmware intervention.
ADP2127ACNZ-1.20R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-SMD, No Lead
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.1V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 6MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-EWLP (1.3x0.90)
ADP2127ACNZ-1.20R7 FAQ
1.How can I place an order for ADP2127ACNZ-1.20R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2127ACNZ-1.20R7 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 ADP2127ACNZ-1.20R7 reliable?
The price and inventory of ADP2127ACNZ-1.20R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2127ACNZ-1.20R7 is usually 5 days.
3.What payment methods are accepted for ADP2127ACNZ-1.20R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2127ACNZ-1.20R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2127ACNZ-1.20R7?
ADP2127ACNZ-1.20R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2127ACNZ-1.20R7 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 ADP2127ACNZ-1.20R7?
For technical support, including ADP2127ACNZ-1.20R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2127ACNZ-1.20R7 requirements.
6.How does Aetrix verify that ADP2127ACNZ-1.20R7 is sourced from the original manufacturer or authorized distributors?
All ADP2127ACNZ-1.20R7 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 ADP2127ACNZ-1.20R7 meets industry standards.
7.What is the process for return or replacement of ADP2127ACNZ-1.20R7?
All ADP2127ACNZ-1.20R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2127ACNZ-1.20R7, 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 ADP2127ACNZ-1.20R7 part is unused and in its original packaging.
Return procedure for ADP2127ACNZ-1.20R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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