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Analog Devices Inc. ADP2107ACPZ-1.2-R7
- Part No.:
- ADP2107ACPZ-1.2-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-WQFN Exposed Pad, CSP
- Datasheet:
-
ADP2107ACPZ-1.2-R7.pdf
- Description:
- IC REG BUCK 1.2V 2A 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,994
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Product details
Overview
ADP2107ACPZ-1.2-R7 from Analog Devices is a 2 A synchronous step-down DC-to-DC converter in a 4 mm × 4 mm LFCSP package, operating from 2.7 V to 5.5 V input and delivering a fixed 1.2 V output with ±3% accuracy over temperature and load. It achieves up to 97% efficiency at 2 A, features 1.2 MHz switching frequency, 20 µA quiescent current, and integrated P-channel high-side switch (100 mΩ typical) and N-channel synchronous rectifier (90 mΩ typical).
For engineers reviewing the ADP2107ACPZ-1.2-R7 datasheet, ADP2107ACPZ-1.2-R7 pinout, ADP2107ACPZ-1.2-R7 application, or ADP2107ACPZ-1.2-R7 equivalent, key selection criteria include its 2 A continuous output capability, ultralow quiescent current for battery longevity, seamless PWM/PFM mode transition, and compatibility with small ceramic output capacitors in space-constrained portable power rails.
Technical Context
The ADP2107ACPZ-1.2-R7 employs a peak-current-mode, constant-frequency PWM control architecture at medium-to-heavy loads for tight regulation and fast transient response, while automatically shifting to pulse-frequency modulation (PFM) under light loads to maintain high efficiency down to 10 mA. Its internal 0.8 V reference feeds a precision feedback amplifier with ±2% FB voltage tolerance over −40°C to +125°C.
It integrates dual power switches - a P-channel MOSFET (100 mΩ typ.) and N-channel synchronous rectifier (90 mΩ typ.) - enabling 100% duty-cycle operation in dropout, soft-start via external capacitor (750–1200 µs), and undervoltage lockout with 200 mV hysteresis. The device supports logic-level enable with 0.1 µA shutdown current and operates across full industrial junction temperature range (−40°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2 A continuous - supports high-current digital core or I/O rails in portable SoC designs. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single Li+/Li− polymer, multi-cell alkaline/NiMH, and PCMCIA supplies. |
| Fixed Output Voltage | 1.2 V ±3% - factory-trimmed for stable low-voltage logic supply without external resistors. |
| Switching Frequency | 1.2 MHz (±167 kHz) - enables compact LC filter design with ≤2.2 µH inductors and 10 µF ceramic output caps. |
| Quiescent Current | 20 µA - extends battery life in always-on subsystems such as RTC or sensor monitoring circuits. |
| Efficiency Peak | 97% at 2 A - achieved via low RDS(on) integrated switches and synchronous rectification. |
| Shutdown Current | 0.1 µA - ensures near-zero leakage during system sleep states. |
| Thermal Shutdown | 140°C with 40°C hysteresis - protects against sustained overload or poor PCB thermal layout. |
Pinout & Package
ADP2107ACPZ-1.2-R7 uses a 16-lead, 4 mm × 4 mm LFCSP package with exposed thermal pad soldered to PCB ground plane. Pin 1 is EN (enable); pins 2, 3, 4, and 15 are test-only GND pins tied to AGND; pin 5 is COMP (compensation node); pin 6 is SS (soft-start input); pin 7 is AGND (analog ground); pin 8 is NC (no connect); pins 9 and 13 are PWIN1/PWIN2 (power switch source inputs); pins 10 and 12 are LX1/LX2 (switch node outputs, must be tied together); pin 11 is PGND (power ground); pin 14 is IN (internal circuitry supply); pin 16 is FB (feedback input, internally connected to 1.2 V divider); EP is exposed pad (thermal ground).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable logic input | Active-high control: >2 V enables converter; <0.4 V disables with 0.1 µA input current. |
| IN (Pin 14) | Internal bias supply | Powers control circuitry; bypassed to AGND with ≥0.1 µF capacitor; connected to PWIN1 via 10 Ω resistor. |
| FB (Pin 16) | Feedback reference node | Internally connected to 1.2 V output divider; no external resistors required for fixed-output version. |
| LX1/LX2 (Pins 10/12) | Switch node outputs | Drain terminals of integrated P-FET and N-FET; must be shorted externally and routed to LC filter. |
| PGND (Pin 11) | Power ground return | Low-impedance return path for input/output capacitors; connected to exposed pad for thermal conduction. |
| AGND (Pin 7) | Analog ground reference | Reference for FB, COMP, SS, and compensation network; must be star-connected near IC and tied to EP. |
| COMP (Pin 5) | Error amplifier output | Transconductance amplifier (50 µA/V) output; requires RC network to AGND for loop stability. |
| SS (Pin 6) | Soft-start timing input | Capacitor-to-AGND sets startup ramp time (e.g., 1 nF = 1 ms); prevents inrush current into output cap. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous power stage | 100 mΩ P-FET + 90 mΩ N-FET eliminates external diode, reduces conduction loss, and enables >95% efficiency at 1.5 A. |
| Adaptive PWM/PFM mode transition | Automatically shifts from fixed-frequency PWM (≥100 mA) to variable-frequency PFM (<100 mA), maintaining >85% efficiency down to 10 mA load. |
| 100% duty cycle LDO mode | Operates in dropout when VIN ≤ VOUT + VDS(on), sustaining regulated 1.2 V output with minimal headroom (e.g., 1.35 V input). |
| Programmable soft start | External capacitor on SS pin controls output ramp rate (750–1200 µs), limiting inrush current into downstream capacitance. |
| Robust protection suite | Includes undervoltage lockout (2.4 V rising threshold), thermal shutdown (140°C), and current limit (2.9 A typical peak). |
| Optimized for miniaturization | 1.2 MHz switching frequency allows use of 2.2 µH inductors and 10 µF X5R/X7R ceramics - no electrolytics required. |
Applications
| Mobile Application Processor Core Rail | Portable Audio Codec Power Supply |
|---|---|
Use Scenario: Powers ARM Cortex-A series CPU cores requiring tightly regulated 1.2 V at up to 2 A with fast load-transient response. IC Role / Device Role / Timing Role: Primary buck regulator supplying digital core voltage; handles dynamic current steps up to 1.5 A/µs. Use Value: Delivers 97% efficiency at full load and maintains <±15 mV output deviation during 0–2 A transients, reducing thermal stress on SoC. |
Use Scenario: Supplies clean 1.2 V bias to stereo audio DAC/ADC in Bluetooth headphones or smart speakers. IC Role / Device Role / Timing Role: Low-noise, low-quiescent-current power source enabling >20-hour battery life in always-listening mode. Use Value: 20 µA quiescent current and PFM operation below 50 mA extend runtime; 1.2 MHz switching avoids audible noise in sensitive analog sections. |
| Industrial IoT Sensor Hub Rail | Wearable Health Monitor Subsystem |
Use Scenario: Provides 1.2 V rail for ultra-low-power microcontroller and BLE radio in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Always-on power manager supporting deep-sleep wake-up events with sub-µA standby leakage. Use Value: 0.1 µA shutdown current and −40°C to +125°C operation ensure reliable field deployment in uncontrolled environments. |
Use Scenario: Powers optical heart-rate sensor ASIC and flash memory in wrist-worn fitness trackers. IC Role / Device Role / Timing Role: Compact, thermally efficient regulator fitting within 8 mm × 8 mm PCB area constraints. Use Value: 4 mm × 4 mm LFCSP package with exposed pad dissipates heat effectively under skin-contact thermal conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62172DRCT | 1.2 V fixed, 2 A, 2.25 V–5.5 V input, 2.25 MHz switching, 18 µA IQ, WSON-10 (3 mm × 3 mm) | Higher switching frequency enables smaller inductors but increases EMI sensitivity; lacks PFM mode at light load. | Preferred where board area is critical and higher-frequency noise can be filtered; not drop-in due to different pinout and package. |
| RT7295BGJ5 | 1.2 V fixed, 2 A, 4.5 V–18 V input, 500 kHz switching, 300 µA IQ, TSOT-23-5 | Wider input range suits 12 V intermediate bus; higher IQ and lower efficiency at light load reduce battery runtime. | Applicable in industrial 12 V systems where input exceeds 5.5 V; unsuitable for Li+ battery direct connection. |
Compared with TPS62172DRCT and RT7295BGJ5, ADP2107ACPZ-1.2-R7 offers superior light-load efficiency via PFM mode and tighter output accuracy (±3% vs. ±4%), making it optimal for battery-powered applications demanding long standby life and precise voltage regulation.
Availability
ADP2107ACPZ-1.2-R7 is available at Aetrix Electronics and suitable for mobile handset power management, wearable health monitor subsystems, and industrial IoT sensor hubs requiring stable component supply, extended temperature support, and high-efficiency DC-DC conversion.
Supply support for ADP2107ACPZ-1.2-R7 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADP2107ACPZ-1.2-R7 belongs to Analog Devices' ADP210x family of high-efficiency, low-IQ synchronous buck converters designed specifically for battery-powered portable electronics requiring compact, thermally robust, and highly efficient power delivery.
FAQ
What is the maximum continuous output current of the ADP2107ACPZ-1.2-R7?
The ADP2107ACPZ-1.2-R7 delivers up to 2 A continuous output current at 1.2 V under typical thermal conditions (θJA = 40°C/W, 4-layer board with exposed pad soldered). Derating applies above +85°C ambient; peak current limit is 2.9 A typical, with thermal shutdown activating at 140°C junction temperature to protect the device.
Does the ADP2107ACPZ-1.2-R7 require external feedback resistors?
No. The ADP2107ACPZ-1.2-R7 is a fixed-output variant with internal resistor divider set to 1.2 V. Pin 16 (FB) connects directly to the internal 0.8 V reference amplifier and requires no external components - simplifying layout and improving accuracy versus adjustable versions.
How does the ADP2107ACPZ-1.2-R7 manage efficiency at light loads?
The ADP2107ACPZ-1.2-R7 automatically transitions from constant-frequency PWM mode (above ~100 mA) to pulse-frequency modulation (PFM) mode at light loads. This reduces switching losses and maintains >85% efficiency down to 10 mA, enabled by its 20 µA quiescent current and adaptive control architecture.
What package type and thermal considerations apply to the ADP2107ACPZ-1.2-R7?
The ADP2107ACPZ-1.2-R7 uses a 16-lead 4 mm × 4 mm LFCSP package with an exposed thermal pad. For optimal performance, the pad must be soldered to a solid PCB ground plane with ≥4 thermal vias. Thermal resistance is θJA = 40°C/W under JEDEC-standard 4-layer board conditions.
Can the ADP2107ACPZ-1.2-R7 operate with input voltage below 1.2 V?
No. The ADP2107ACPZ-1.2-R7 requires minimum input voltage of 2.7 V per specifications. However, it supports 100% duty-cycle operation when input drops close to output (e.g., 1.35 V input sustains 1.2 V output), functioning as a low-dropout regulator in dropout condition - but only down to the 2.7 V absolute minimum input rating.
ADP2107ACPZ-1.2-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-LFCSP (4x4)
ADP2107ACPZ-1.2-R7 FAQ
1.How can I place an order for ADP2107ACPZ-1.2-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP2107ACPZ-1.2-R7 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 ADP2107ACPZ-1.2-R7 reliable?
The price and inventory of ADP2107ACPZ-1.2-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP2107ACPZ-1.2-R7 is usually 5 days.
3.What payment methods are accepted for ADP2107ACPZ-1.2-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP2107ACPZ-1.2-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP2107ACPZ-1.2-R7?
ADP2107ACPZ-1.2-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP2107ACPZ-1.2-R7 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 ADP2107ACPZ-1.2-R7?
For technical support, including ADP2107ACPZ-1.2-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP2107ACPZ-1.2-R7 requirements.
6.How does Aetrix verify that ADP2107ACPZ-1.2-R7 is sourced from the original manufacturer or authorized distributors?
All ADP2107ACPZ-1.2-R7 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 ADP2107ACPZ-1.2-R7 meets industry standards.
7.What is the process for return or replacement of ADP2107ACPZ-1.2-R7?
All ADP2107ACPZ-1.2-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP2107ACPZ-1.2-R7, 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 ADP2107ACPZ-1.2-R7 part is unused and in its original packaging.
Return procedure for ADP2107ACPZ-1.2-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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