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Analog Devices Inc. ADP1871ARMZ-0.6-R7
- Part No.:
- ADP1871ARMZ-0.6-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADP1871ARMZ-0.6-R7.pdf
- Description:
- IC REG CTRLR BUCK 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,126
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Product details
Overview
ADP1871ARMZ-0.6-R7 from Analog Devices is a synchronous buck controller implementing constant on-time and valley current-mode control for high-efficiency DC/DC conversion. It supports 2.95 V to 20 V input, delivers 0.6 V output with ±1.0% reference accuracy, operates at 600 kHz, includes integrated bootstrap diode and power-saving mode (PSM), and targets DSP core supplies and 12 V POL applications.
For engineers reviewing the ADP1871ARMZ-0.6-R7 datasheet, ADP1871ARMZ-0.6-R7 pinout, ADP1871ARMZ-0.6-R7 application, or ADP1871ARMZ-0.6-R7 equivalent, key selection criteria include its PSM capability for light-load efficiency, 600 kHz switching frequency, valley current-sense architecture, 0.6 V reference tolerance, and MSOP-10 package compatibility with N-channel MOSFET power stages.
Technical Context
The ADP1871ARMZ-0.6-R7 uses a pseudo-fixed-frequency constant on-time control scheme combined with valley current-mode sensing to ensure stability and fast transient response across wide duty cycles. Its architecture enables regulation down to 0.6 V while supporting all-N-channel FET topologies without external current-sense resistors.
It integrates a 5 V internal LDO (VREG) for gate driver biasing, features programmable current-sense gain via DRVL-to-PGND resistor, and implements hiccup-mode short-circuit protection plus thermal shutdown at 155°C. The PSM function enables pulse-skipping operation below ~200 mA load to maintain regulation while improving light-load efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.95 V to 20 V - supports wide-input industrial and telecom rails including 5 V, 12 V, and 16.5 V sources. |
| Output Voltage Reference | 0.6 V ±1.0% - enables precise low-voltage regulation for modern DSP/FPGA cores with tight tolerance requirements. |
| Switching Frequency | 600 kHz - balances efficiency, size, and EMI; minimum off-time limited to 340 ns for high VIN operation. |
| Control Architecture | Constant on-time + valley current mode - provides inherent stability, fast load-step response, and no need for external compensation network tuning. |
| Power Saving Mode | Enabled - reduces quiescent current and enables pulse-skipping at light loads to improve system-level efficiency. |
| Package | 10-Lead MSOP - surface-mount, thermally enhanced package with exposed pad tied to GND for reliable thermal management. |
| Integrated Features | Bootstrap diode, soft-start (3 ms), precision enable (245–330 mV threshold), UVLO (2.65 V), thermal shutdown (155°C). |
Pinout & Package
ADP1871ARMZ-0.6-R7 is housed in a 10-lead MSOP package with exposed thermal pad (must be connected to GND). Pin 1 is VIN; Pin 2 is COMP/EN (dual-function error amplifier output and enable input); Pin 3 is FB (feedback node); Pin 4 is GND (analog ground reference); Pin 5 is VREG (internal 5 V regulator output); Pin 6 is DRVL (low-side driver output and current-sense gain setting); Pin 7 is PGND (power ground); Pin 8 is DRVH (high-side driver output); Pin 9 is SW (switch node); Pin 10 is BST (bootstrap capacitor connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-side MOSFET drain supply | Accepts 2.95–20 V input; powers internal circuitry and high-side gate drive via BST path. |
| COMP/EN | Error amplifier output / Enable input | Open-drain COMP output for loop compensation; logic-low (<285 mV) disables device. |
| FB | Feedback sense input | Connects to resistor divider; regulates output by comparing against 0.6 V internal reference. |
| GND | Analog ground reference | Reference for sensitive analog blocks; must be isolated from noisy power ground paths. |
| VREG | Internal 5 V LDO output | Bias source for drivers and internal logic; not intended for external loading (max 100 mA). |
| DRVL | Low-side gate driver / current-sense gain | Drives lower N-MOSFET; resistor from DRVL to PGND sets current-sense amplifier gain (3 V/V @ 47 kΩ). |
| PGND | Power ground return | Return path for low-side driver and MOSFET source; separates high-current paths from analog ground. |
| DRVH | High-side gate driver | Drives upper N-MOSFET gate; requires external BST capacitor between BST and SW nodes. |
| SW | Switch node | Connection point between high- and low-side MOSFETs; ties to inductor and BST capacitor. |
| BST | Bootstrap supply for high-side driver | Internally connected to VREG via diode; external capacitor to SW generates floating gate drive voltage. |
Key Features
| Feature | Design Value |
|---|---|
| No external current-sense resistor | Valley current sensing via DRVL pin eliminates Rsense, reducing power loss and board area. |
| Integrated bootstrap diode | Reduces external component count and improves reliability vs. discrete bootstrap solutions. |
| Start-up into precharged output | Prevents reverse current flow during soft start, enabling safe hot-plug and rail sequencing. |
| Resistor-programmable current-sense gain | Four gain options (2.7–26 V/V) via single resistor on DRVL, enabling optimization for different FET RDS(on). |
| Thermal overload and short-circuit protection | Hiccup-mode current limiting with 6 ms timing ensures robust fault recovery without latch-up. |
Applications
| Telecom Point-of-Load Supply | DSP Core Power |
|---|---|
Use Scenario: Regulating 12 V backplane to 0.8–1.8 V for baseband processors in 4G/5G remote radio units. IC Role / Device Role / Timing Role: Primary synchronous buck controller managing dynamic load transients and maintaining tight output voltage regulation under burst traffic. Use Value: Valley current-mode control delivers <10 µs response to 50% load steps; PSM extends battery life in powered-over-Ethernet (PoE) systems. | Use Scenario: Providing clean, low-noise 1.2 V supply to multi-core digital signal processors in video encoding modules. IC Role / Device Role / Timing Role: High-accuracy voltage controller with ±1.0% reference ensuring consistent DSP performance across temperature and line variations. Use Value: 0.6 V reference tolerance enables stable operation at minimum core voltage; 600 kHz switching allows compact 0.72 µH inductors. |
| Mid-Range Server VRM | Set-Top Box SoC Supply |
Use Scenario: Generating 0.95 V for CPU I/O domains in edge-server motherboards with 12 V intermediate bus. IC Role / Device Role / Timing Role: Synchronous buck controller delivering up to 15 A with minimal external components and high thermal efficiency. Use Value: Integrated VREG and bootstrap diode reduce BOM count by two parts; MSOP-10 footprint simplifies layout in space-constrained VRMs. | Use Scenario: Powering ARM-based SoCs in consumer set-top boxes requiring efficient 1.0 V and 1.8 V rails from 12 V input. IC Role / Device Role / Timing Role: Dual-rail capable controller (via feedback divider) delivering regulated outputs with low standby power consumption. Use Value: PSM reduces no-load quiescent current to 190–280 µA, meeting Energy Star standby power requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5116PWPR | Current-mode controller with adjustable frequency (50–750 kHz), no integrated bootstrap diode, requires external high-side driver bias. | Designed for higher-power (>20 A), wide-input (6–100 V) industrial supplies; lacks PSM and 0.6 V reference accuracy. | Choose LM5116PWPR when input exceeds 20 V or when external bootstrap flexibility is required; avoid for low-voltage, low-quiescent designs. |
| TPS40210DGQR | Voltage-mode controller with fixed 600 kHz frequency, no valley current sensing, no PSM, requires external current-sense resistor. | Targeted at cost-sensitive telecom and networking supplies where light-load efficiency is secondary to simplicity. | Choose TPS40210DGQR for non-critical 0.6–5 V outputs where ±2% reference tolerance is acceptable and BOM cost dominates. |
Compared with LM5116PWPR and TPS40210DGQR, ADP1871ARMZ-0.6-R7 offers superior light-load efficiency via PSM, eliminates current-sense resistor losses, and guarantees 0.6 V output accuracy-making it optimal for low-voltage, thermally constrained DSP and SoC applications.
Availability
ADP1871ARMZ-0.6-R7 is available at Aetrix Electronics and suitable for telecom point-of-load supplies, DSP core power, and mid-range server VRMs requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for ADP1871ARMZ-0.6-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 ADP1870/ADP1871 product line delivers high-efficiency, high-transient-response synchronous buck controllers optimized for low-voltage, high-current POL applications in telecom infrastructure and computing systems.
FAQ
What is the switching frequency of the ADP1871ARMZ-0.6-R7?
The ADP1871ARMZ-0.6-R7 is factory-configured for 600 kHz nominal switching frequency. This value is fixed per part number variant and remains stable across load and line conditions within ±10% variation, as confirmed in the datasheet's Figure 24 and Table 1 specifications.
Does the ADP1871ARMZ-0.6-R7 support power saving mode (PSM)?
Yes, the ADP1871ARMZ-0.6-R7 includes built-in power saving mode (PSM), which enables pulse-skipping operation at light loads to maintain output regulation while significantly reducing quiescent current-down to 190–280 µA in shutdown, as specified in Table 1.
What is the output voltage accuracy of the ADP1871ARMZ-0.6-R7 over temperature?
The ADP1871ARMZ-0.6-R7 maintains a 0.6 V reference with ±1.0% accuracy over −40°C to +125°C junction temperature, as verified in Table 1 (FB Regulation Voltage: 594.2 mV to 605.8 mV). This is confirmed by Figure 22 showing <±1 mV drift across temperature.
Can the ADP1871ARMZ-0.6-R7 drive both high-side and low-side N-channel MOSFETs?
Yes, the ADP1871ARMZ-0.6-R7 is explicitly designed to drive all-N-channel MOSFET power stages. It provides dedicated DRVH and DRVL outputs with matched rise/fall times (11–25 ns), integrated bootstrap diode, and valley current sensing-eliminating the need for P-channel high-side devices.
What package type does the ADP1871ARMZ-0.6-R7 use?
The ADP1871ARMZ-0.6-R7 uses a 10-lead MSOP package with exposed thermal pad. Per Figure 3 and Table 4, the exposed pad must be soldered to GND for thermal and electrical integrity, and the package is rated for −40°C to +125°C operation.
ADP1871ARMZ-0.6-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):
- 2.95V ~ 20V
- Frequency - Switching:
- 600kHz
- Duty Cycle (Max):
- 65%
- 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
ADP1871ARMZ-0.6-R7 FAQ
1.How can I place an order for ADP1871ARMZ-0.6-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1871ARMZ-0.6-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 ADP1871ARMZ-0.6-R7 reliable?
The price and inventory of ADP1871ARMZ-0.6-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1871ARMZ-0.6-R7 is usually 5 days.
3.What payment methods are accepted for ADP1871ARMZ-0.6-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1871ARMZ-0.6-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1871ARMZ-0.6-R7?
ADP1871ARMZ-0.6-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1871ARMZ-0.6-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 ADP1871ARMZ-0.6-R7?
For technical support, including ADP1871ARMZ-0.6-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1871ARMZ-0.6-R7 requirements.
6.How does Aetrix verify that ADP1871ARMZ-0.6-R7 is sourced from the original manufacturer or authorized distributors?
All ADP1871ARMZ-0.6-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 ADP1871ARMZ-0.6-R7 meets industry standards.
7.What is the process for return or replacement of ADP1871ARMZ-0.6-R7?
All ADP1871ARMZ-0.6-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1871ARMZ-0.6-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 ADP1871ARMZ-0.6-R7 part is unused and in its original packaging.
Return procedure for ADP1871ARMZ-0.6-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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