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Analog Devices Inc. ADP1882ARMZ-0.3-R7
- Part No.:
- ADP1882ARMZ-0.3-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADP1882ARMZ-0.3-R7.pdf
- Description:
- IC REG CTRLR BUCK 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,097
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Product details
Overview
ADP1882ARMZ-0.3-R7 from Analog Devices is a synchronous current-mode PWM buck controller with constant on-time architecture, designed for high-efficiency DC/DC conversion in N-channel MOSFET power stages. It operates from 2.75 V to 20 V input, delivers 0.8 V output with ±1.0% reference accuracy, supports 300 kHz switching, and integrates bootstrap diode and thermal/short-circuit protection.
For engineers reviewing the ADP1882ARMZ-0.3-R7 datasheet, ADP1882ARMZ-0.3-R7 pinout, ADP1882ARMZ-0.3-R7 application, or ADP1882ARMZ-0.3-R7 equivalent, this controller is selected for telecom/server core supplies where valley current-mode control, precharged-load startup, and low-duty-cycle regulation down to 0.8 V are critical design requirements.
Technical Context
The ADP1882ARMZ-0.3-R7 implements a valley current-mode control scheme with pseudo-fixed frequency operation, enabling stable regulation at low duty cycles and fast transient response. Its constant on-time architecture eliminates need for external current-sense resistors and supports programmable current-sense gain via DRVL-to-PGND resistor.
It features integrated high-side and low-side gate drivers (DRVH/DRVL), internal bootstrap diode, precision enable threshold (235–330 mV), and soft-start period of 3.0 ms. Thermal shutdown triggers at 155°C with 15°C hysteresis, and hiccup-mode short-circuit protection activates after 6 ms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 300 kHz - fixed nominal frequency enabling compact magnetics and predictable EMI profile |
| Input Voltage Range | 2.75 V to 20 V - supports wide-range industrial and telecom input rails including 12 V and 16.5 V systems |
| Output Voltage Accuracy | ±1.0% at 25°C, ±1.2% over −40°C to +125°C - ensures tight regulation for DSP/FPGA core supplies |
| Reference Voltage | 0.800 V - enables direct generation of sub-1 V outputs without external divider scaling |
| Shutdown Current | 140 μA - minimizes standby power loss in always-on subsystems |
| Thermal Shutdown Threshold | 155°C - protects against sustained overload or poor PCB thermal design |
| Soft Start Period | 3.0 ms - limits in-rush current and prevents reverse current during startup into precharged loads |
Pinout & Package
ADP1882ARMZ-0.3-R7 is housed in a 10-lead MSOP package (3 mm × 3 mm, 0.5 mm pitch) with exposed pad for thermal enhancement. Pin numbering follows standard top-view orientation with pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-side power input | Connects to drain of upper N-MOSFET; accepts up to 20 V, enabling direct use with 12 V/16.5 V bus rails |
| COMP/EN | Error amplifier output / enable input | Active-low enable: <285 mV disables IC; also serves as loop compensation node for stability tuning |
| FB | Feedback sense input | Non-inverting input of error amp; connects to resistor divider for precise 0.8 V reference tracking |
| GND | Analog ground reference | Separate analog ground plane required-must be isolated from PGND to minimize noise coupling into feedback path |
| VDD | Bias supply input | 2.75–5.5 V bias rail; powers internal logic and gate drivers; bypassed with 1 μF to PGND and 0.1 μF to GND |
| DRVL | Low-side gate driver output | Drives lower N-MOSFET gate; also sets current-sense gain via external resistor to PGND |
| PGND | Power ground return | Return path for low-side driver and MOSFET source; must be connected directly to power ground plane |
| DRVH | High-side gate driver output | Drives upper N-MOSFET gate; requires BST capacitor to SW for bootstrap operation |
| SW | Switch node | Connection point between upper and lower MOSFETs; ties to inductor and BST capacitor; high dv/dt node |
| BST | Bootstrap supply | Internal diode-connected to VDD; requires external capacitor to SW to generate gate drive voltage > VIN |
Key Features
| Feature | Design Value |
|---|---|
| Valley current-mode control | Enables stable regulation at ultra-low duty cycles (e.g., 0.8 V out from 16.5 V in) without subharmonic oscillation |
| No external current-sense resistor | Reduces BOM count and power loss by using MOSFET RDS(on) sensing via DRVL-based gain programming |
| Integrated bootstrap diode | Eliminates need for external Schottky diode in most designs; optional external diode improves gate drive capability |
| Start-up into precharged output | Prevents reverse current flow during soft start, protecting input source and output capacitors |
| Thermal and short-circuit protection | Hiccup-mode current limiting and 155°C thermal shutdown ensure robustness under fault conditions |
Applications
| Telecom Core Supply | Server CPU VRM |
|---|---|
|
Use Scenario: Regulating 0.8 V core voltage for high-performance ASICs in 48 V intermediate bus telecom systems with 12 V local distribution. IC Role / Device Role / Timing Role: Primary synchronous buck controller managing high-current, low-voltage conversion with valley current-mode loop stability. Use Value: Achieves >90% efficiency at 10 A load (VIN = 13 V, VOUT = 0.8 V, fSW = 300 kHz) while maintaining ±1.2% output accuracy across temperature. |
Use Scenario: Providing tightly regulated 1.8 V supply to multi-core processors in mid-tier servers with dynamic load steps up to 12 A. IC Role / Device Role / Timing Role: Constant on-time PWM controller delivering fast transient response (<10 µs recovery) and hiccup-mode fault protection. Use Value: Soft-start and precharged-load capability prevent in-rush damage during hot-swap events; 3.0 ms ramp avoids system brownouts. |
| Set-Top Box SoC Power | DSP Core Supply |
|
Use Scenario: Generating 1.2 V and 3.3 V rails for multimedia SoCs in consumer set-top boxes operating from 5.5 V or 12 V inputs. IC Role / Device Role / Timing Role: Dual-output capable controller (with external components) supporting multiple voltage domains with independent feedback paths. Use Value: 0.8 V reference allows flexible resistor-divider configuration; ±1.0% accuracy ensures compliance with SoC VDD tolerance specs. |
Use Scenario: Delivering 0.8 V–1.8 V core power to TI C6000 or Analog Devices SHARC DSPs in real-time audio/video processing equipment. IC Role / Device Role / Timing Role: High-precision buck controller with low-noise FB input and dedicated analog ground for signal integrity. Use Value: 50 nA typical FB leakage current preserves feedback divider accuracy; 300 kHz switching balances efficiency and EMI filtering cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1883ARMZ-0.3-R7 | Includes power saving mode (PSM) for pulse-skipping at light loads; identical pinout, frequency, and control architecture | Preferred for battery-powered or energy-sensitive systems requiring >85% efficiency below 100 mA load | Select ADP1883ARMZ-0.3-R7 if PSM operation is needed; otherwise ADP1882ARMZ-0.3-R7 offers simpler control with forced PWM only |
| TPS54331DR | Fixed-frequency current-mode controller (570 kHz), no integrated bootstrap diode, requires external sense resistor | Lower BOM cost but higher layout complexity; lacks precharged-load startup and valley-mode stability at low duty cycle | Choose TPS54331DR for cost-driven, non-critical 1.2 V+ applications; avoid for 0.8 V/16.5 V scenarios due to duty-cycle limitation |
Compared with ADP1883ARMZ-0.3-R7, the ADP1882ARMZ-0.3-R7 omits PSM but simplifies design for constant-load or PWM-only systems; versus TPS54331DR, it delivers superior low-VOUT regulation, integrated bootstrap, and precharged-start capability-critical for telecom and server core rails.
Availability
ADP1882ARMZ-0.3-R7 is available at Aetrix Electronics and suitable for telecom infrastructure, server power delivery, and DSP core supply applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADP1882ARMZ-0.3-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The ADP1882/ADP1883 product line was engineered for high-efficiency, high-current synchronous buck conversion in space-constrained telecom and computing systems, emphasizing low-VOUT stability, fast transient response, and robust fault protection.
FAQ
What is the minimum output voltage supported by the ADP1882ARMZ-0.3-R7?
The ADP1882ARMZ-0.3-R7 supports a minimum output voltage of 0.8 V, enabled by its precise 0.800 V internal reference with ±1.0% accuracy at 25°C. This allows direct regulation of modern low-voltage ASIC, FPGA, and DSP cores without external reference scaling or divider compensation.
Does the ADP1882ARMZ-0.3-R7 require an external current-sense resistor?
No, the ADP1882ARMZ-0.3-R7 does not require an external current-sense resistor. It implements low-side MOSFET RDS(on) current sensing, with gain programmable via a resistor from DRVL to PGND-supporting RES values of 100 kΩ, 47 kΩ, 22 kΩ, or open circuit for configurable current-limit thresholds.
Can the ADP1882ARMZ-0.3-R7 start up into a precharged output capacitor?
Yes, the ADP1882ARMZ-0.3-R7 supports startup into a precharged output. Its internally fixed 3.0 ms soft-start period and reverse-current protection circuitry prevent damaging in-rush current when the output is already biased, making it suitable for hot-swap and redundant power architectures.
What package type and thermal characteristics does the ADP1882ARMZ-0.3-R7 use?
The ADP1882ARMZ-0.3-R7 uses a 10-lead MSOP package with exposed pad. Its thermal resistance is θJA = 213.1°C/W on a 2-layer board and 171.7°C/W on a 4-layer board. Junction temperature is rated from −40°C to +125°C, with thermal shutdown activating at 155°C.
How does the ADP1882ARMZ-0.3-R7 differ from the ADP1883ARMZ-0.3-R7?
The ADP1882ARMZ-0.3-R7 is the base version without power saving mode (PSM); the ADP1883ARMZ-0.3-R7 adds PSM for pulse-skipping at light loads to improve efficiency. Both share identical pinout, 300 kHz frequency option, valley current-mode architecture, and protection features-only PSM functionality differs.
ADP1882ARMZ-0.3-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 2.75V ~ 20V
- Frequency - Switching:
- 300kHz
- Duty Cycle (Max):
- 84%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- Enable
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
ADP1882ARMZ-0.3-R7 FAQ
1.How can I place an order for ADP1882ARMZ-0.3-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1882ARMZ-0.3-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 ADP1882ARMZ-0.3-R7 reliable?
The price and inventory of ADP1882ARMZ-0.3-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1882ARMZ-0.3-R7 is usually 5 days.
3.What payment methods are accepted for ADP1882ARMZ-0.3-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1882ARMZ-0.3-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1882ARMZ-0.3-R7?
ADP1882ARMZ-0.3-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1882ARMZ-0.3-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 ADP1882ARMZ-0.3-R7?
For technical support, including ADP1882ARMZ-0.3-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1882ARMZ-0.3-R7 requirements.
6.How does Aetrix verify that ADP1882ARMZ-0.3-R7 is sourced from the original manufacturer or authorized distributors?
All ADP1882ARMZ-0.3-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 ADP1882ARMZ-0.3-R7 meets industry standards.
7.What is the process for return or replacement of ADP1882ARMZ-0.3-R7?
All ADP1882ARMZ-0.3-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1882ARMZ-0.3-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 ADP1882ARMZ-0.3-R7 part is unused and in its original packaging.
Return procedure for ADP1882ARMZ-0.3-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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