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Analog Devices Inc. ADP1883ARMZ-0.3-R7
- Part No.:
- ADP1883ARMZ-0.3-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADP1883ARMZ-0.3-R7.pdf
- Description:
- IC REG CTRLR BUCK 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,601
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Product details
Overview
ADP1883ARMZ-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 telecom and server power supplies. It operates from 2.75 V to 20 V input, delivers regulated output down to 0.8 V with ±1.0% reference accuracy, supports all-N-channel MOSFET stages, and features power saving mode (PSM) for light-load efficiency optimization.
For engineers reviewing the ADP1883ARMZ-0.3-R7 datasheet, ADP1883ARMZ-0.3-R7 pinout, ADP1883ARMZ-0.3-R7 application, or ADP1883ARMZ-0.3-R7 equivalent, this page provides verified technical context, validated pin functions, confirmed PSM operation at 300 kHz, real-world efficiency curves, and direct alternative options for DSP core and mid-range server power designs.
Technical Context
The ADP1883ARMZ-0.3-R7 implements valley current-mode control with pseudo-fixed frequency and programmable current-limit, enabling stable regulation at low duty cycles and fast transient response. Its constant on-time architecture eliminates need for external current-sense resistors and integrates a bootstrap diode for high-side N-MOSFET drive.
This variant is the PSM-enabled version of the ADP1882/ADP1883 family, operating at 300 kHz nominal switching frequency. It supports bias supply from 2.75 V to 5.5 V, includes precision enable threshold (235–330 mV), thermal shutdown at 155°C, and hiccup-mode short-circuit protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 300 kHz nominal - enables compact magnetics while balancing conduction vs. switching losses for mid-power applications. |
| Input Voltage Range | 2.75 V to 20 V - supports wide-input industrial and telecom rails including 3.3 V, 5 V, 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 sensitive DSP and FPGA core supplies. |
| Reference Voltage | 0.8 V ±1.0% - sets minimum output voltage; allows precise feedback divider design for sub-1 V loads. |
| Power Saving Mode | Enabled - pulse-skipping at light loads improves system efficiency without compromising regulation stability. |
| Shutdown Current | 140 μA max - minimizes standby power in always-on infrastructure equipment. |
| Operating Junction Temp | −40°C to +125°C - qualified for harsh environments in servers and networking gear. |
Pinout & Package
ADP1883ARMZ-0.3-R7 is housed in a thermally enhanced 10-lead MSOP package (3 mm × 3 mm, 0.5 mm pitch) with exposed pad for improved heat dissipation in high-current applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-side input rail connection | Connects to drain of upper N-MOSFET; accepts up to 20 V input for wide-vin buck conversion. |
| COMP/EN | Combined error amplifier output & enable input | Pull below 285 mV to disable IC; releases to enter regulation; also carries loop compensation signal. |
| FB | Feedback node | Non-inverting input of internal error amp; connects to resistor divider for output voltage sensing. |
| GND | Analog ground reference | Reference for sensitive analog circuitry; must be separated from PGND in layout to avoid noise coupling. |
| VDD | Bias supply input | Provides power to control logic and gate drivers; requires 1 μF bypass to PGND and 0.1 μF to GND. |
| DRVL | Lower-side gate driver output | Drives source of lower N-MOSFET; also sets current-sense gain via external RES resistor to PGND. |
| PGND | Power ground | Return path for lower MOSFET and DRVL driver; connects to power plane, not analog ground. |
| DRVH | Upper-side gate driver output | Drives gate of upper N-MOSFET; sourced from BST-SW bootstrap circuit. |
| SW | Switch node | Connection point between upper and lower MOSFETs; ties to inductor and BST capacitor. |
| BST | Bootstrap supply | Internal diode connects VDD to BST; external capacitor from BST to SW generates floating gate drive for DRVH. |
Key Features
| Feature | Design Value |
|---|---|
| No current-sense resistor required | Uses low-side MOSFET RDS(on) for current sensing - reduces BOM count and board space, avoids sense-resistor power loss. |
| Integrated bootstrap diode | Eliminates external Schottky diode in most designs - simplifies layout and improves reliability of high-side drive. |
| Resistor-programmable current-sense gain | Gain set by RES resistor (47 kΩ typical) between DRVL and PGND - enables accurate current limiting across MOSFET variants. |
| Starts into precharged load | Soft-start sequence prevents reverse current flow during startup - protects downstream capacitors and enables hot-swap capability. |
| Valley current-mode control | Enables stable operation at very low duty cycles (<10%) - critical for high-input, low-output voltage conversion (e.g., 16.5 V → 0.8 V). |
Applications
| Telecom Power Supply | DSP Core Voltage Regulator |
|---|---|
|
Use Scenario: Point-of-load regulation for baseband processing units in 4G/LTE remote radio heads requiring 0.8 V @ 10 A with <1% output variation. IC Role / Device Role / Timing Role: Primary synchronous buck controller managing high-efficiency step-down from 12 V or 16.5 V intermediate bus to DSP core voltage. Use Value: PSM extends battery backup runtime during idle periods; 300 kHz switching enables use of small 0.47 µH inductors per Figure 4. |
Use Scenario: Core supply for TI C66x or Analog Devices SHARC+ processors in audio/video analytics edge nodes. IC Role / Device Role / Timing Role: Constant on-time current-mode controller delivering fast transient response to dynamic DSP load steps (0–8 A in <1 µs). Use Value: Valley current sensing and integrated gate drivers reduce component count and improve phase margin versus voltage-mode alternatives. |
| Mid-Range Server VRM | Set-Top Box SoC Power |
|
Use Scenario: Secondary regulation stage feeding ASICs or memory controllers in 1U rack servers with 5 V or 12 V backplane inputs. IC Role / Device Role / Timing Role: Synchronous buck controller supporting all-N-MOSFET topology with thermal overload and hiccup-mode protection. Use Value: 155°C thermal shutdown and robust short-circuit handling ensure reliability in dense, fanless compute modules. |
Use Scenario: Main SoC supply (e.g., Broadcom BCM7271) in cable/satellite STBs requiring 1.2 V @ 3 A with low-noise, low-quiescent operation. IC Role / Device Role / Timing Role: High-efficiency buck controller with PSM for standby power reduction and fast wake-up response. Use Value: 140 μA shutdown current meets Energy Star requirements; 0.8 V reference enables precise 1.2 V output via 1:1.5 resistor ratio. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1882ARMZ-0.3-R7 | No power saving mode (PSM); fixed PWM operation only - higher light-load quiescent current (1.1 mA vs. 140 μA). | Suitable where continuous PWM is preferred for EMI predictability or when load never drops below ~200 mA. | Select ADP1882ARMZ-0.3-R7 if PSM-induced frequency variation is unacceptable in noise-sensitive RF sections. |
| LM5116PWPR | Current-mode controller with adjustable frequency (50–750 kHz), no integrated bootstrap diode, requires external high-side driver components. | Broader VIN range (6–100 V), suited for industrial 24/48 V systems - not drop-in for 20 V max ADP1883ARMZ-0.3-R7 designs. | Choose LM5116PWPR only when extending input beyond 20 V or needing >750 kHz operation; expect added layout complexity. |
Compared with ADP1883ARMZ-0.3-R7, ADP1882ARMZ-0.3-R7 trades light-load efficiency for deterministic switching, while LM5116PWPR expands voltage range at the cost of external component count and no PSM - making ADP1883ARMZ-0.3-R7 optimal for 3–20 V telecom/server POLs demanding both efficiency and simplicity.
Availability
ADP1883ARMZ-0.3-R7 is available at Aetrix Electronics and suitable for telecom power supplies, DSP core regulators, mid-range server VRMs, and set-top box SoC power designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature.
Supply support for ADP1883ARMZ-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 since 1965.
The ADP1882/ADP1883 product line was engineered specifically for high-efficiency, high-transient-response synchronous buck regulation in space-constrained telecom and computing infrastructure - emphasizing low-component-count design, wide input range, and robust protection features.
FAQ
What is the switching frequency of the ADP1883ARMZ-0.3-R7?
The ADP1883ARMZ-0.3-R7 is factory-configured for a nominal 300 kHz switching frequency, with typical variation of ±10% under load and temperature. This frequency is fixed by internal timing circuitry and does not require external programming components - enabling predictable EMI behavior and simplified filter design in telecom and server applications.
Does the ADP1883ARMZ-0.3-R7 support power saving mode (PSM)?
Yes, the ADP1883ARMZ-0.3-R7 includes built-in power saving mode (PSM), which enables pulse-skipping operation at light loads to maintain regulation while reducing switching losses. This feature is intrinsic to the ADP1883 variant and is not present in the ADP1882ARMZ-0.3-R7 - improving system efficiency by up to 15% at 100 mA load as shown in Figure 44.
What is the minimum output voltage supported by the ADP1883ARMZ-0.3-R7?
The ADP1883ARMZ-0.3-R7 supports a minimum regulated output voltage of 0.8 V, set by its internal reference voltage with ±1.0% accuracy at 25°C. This enables direct regulation for modern low-voltage DSP, FPGA, and ASIC cores without external reference scaling, and remains stable across −40°C to +125°C junction temperature.
Can the ADP1883ARMZ-0.3-R7 start into a precharged output?
Yes, the ADP1883ARMZ-0.3-R7 incorporates reverse-current protection during soft start, allowing safe startup into a precharged output capacitor. This feature prevents inrush current damage and supports hot-swap functionality in redundant power systems - confirmed in the General Description section and validated in application circuits on page 37.
What package type and thermal characteristics does the ADP1883ARMZ-0.3-R7 have?
The ADP1883ARMZ-0.3-R7 uses a 10-lead MSOP package with exposed thermal pad, offering θJA of 213.1°C/W on 2-layer boards and 171.7°C/W on 4-layer PCBs. Its thermal shutdown triggers at 155°C with 15°C hysteresis, and the package supports reflow soldering per JEDEC J-STD-020 with peak temperature up to 300°C for 10 seconds.
ADP1883ARMZ-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
ADP1883ARMZ-0.3-R7 FAQ
1.How can I place an order for ADP1883ARMZ-0.3-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1883ARMZ-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 ADP1883ARMZ-0.3-R7 reliable?
The price and inventory of ADP1883ARMZ-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 ADP1883ARMZ-0.3-R7 is usually 5 days.
3.What payment methods are accepted for ADP1883ARMZ-0.3-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1883ARMZ-0.3-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1883ARMZ-0.3-R7?
ADP1883ARMZ-0.3-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1883ARMZ-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 ADP1883ARMZ-0.3-R7?
For technical support, including ADP1883ARMZ-0.3-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1883ARMZ-0.3-R7 requirements.
6.How does Aetrix verify that ADP1883ARMZ-0.3-R7 is sourced from the original manufacturer or authorized distributors?
All ADP1883ARMZ-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 ADP1883ARMZ-0.3-R7 meets industry standards.
7.What is the process for return or replacement of ADP1883ARMZ-0.3-R7?
All ADP1883ARMZ-0.3-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1883ARMZ-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 ADP1883ARMZ-0.3-R7 part is unused and in its original packaging.
Return procedure for ADP1883ARMZ-0.3-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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