My Inquiry
My Account
Analog Devices Inc. ADP1871ACPZ-0.6-R7
- Part No.:
- ADP1871ACPZ-0.6-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 10-VFDFN Exposed Pad, CSP
- Datasheet:
-
ADP1871ACPZ-0.6-R7.pdf
- Description:
- IC REG CTRLR BUCK 10LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,893
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADP1871ACPZ-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, integrates bootstrap diode and internal LDO (5 V), and enables power-saving mode (PSM) for light-load efficiency in telecom POL supplies.
For engineers reviewing the ADP1871ACPZ-0.6-R7 datasheet, ADP1871ACPZ-0.6-R7 pinout, ADP1871ACPZ-0.6-R7 application, or ADP1871ACPZ-0.6-R7 equivalent, key selection criteria include PSM capability, 600 kHz switching frequency, 0.6 V reference tolerance, valley current sensing without external resistor, and thermal shutdown at 155°C.
Technical Context
The ADP1871ACPZ-0.6-R7 uses valley current-mode control to maintain stability at low duty cycles and enable regulation down to 0.6 V output. Its constant on-time architecture provides fast transient response while pseudo-fixed frequency operation simplifies EMI filtering.
It integrates an internal 5 V LDO for gate driver biasing, features precision enable threshold (245–330 mV), and implements hiccup-mode short-circuit protection with 6 ms timing. The device supports all-N-channel MOSFET power stages and starts into precharged loads.
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 Reference Voltage | 0.6 V ±1.0% - enables precise low-voltage core regulation for DSPs and FPGAs with minimal feedback divider error. |
| Switching Frequency | 600 kHz - balances efficiency, size, and EMI; minimum off-time of 340 ns supports high VIN/VOUT ratios. |
| Power Saving Mode | Enabled - pulse-skipping at light loads improves system efficiency without compromising regulation. |
| Integrated Bootstrap Diode | Yes - eliminates external Schottky diode in most designs, reducing BOM count and layout complexity. |
| Thermal Shutdown Threshold | 155°C - protects against sustained overload or poor heatsinking in enclosed server or networking enclosures. |
| Enable Threshold | 245–330 mV with 37 mV hysteresis - ensures clean, noise-immune startup sequencing in multi-rail systems. |
Pinout & Package
ADP1871ACPZ-0.6-R7 is housed in a 10-lead LFCSP package (3 mm × 3 mm, 0.8 mm height) with exposed pad thermally connected to GND. The package supports high-power density layouts and enhanced thermal performance (θJA = 40°C/W on 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-side input supply | Connects to drain of upper N-MOSFET; accepts 2.95–20 V with UVLO at 2.65 V. |
| COMP/EN | Error amplifier output / enable input | Active-low enable: <285 mV disables IC; also serves as loop compensation node. |
| FB | Feedback sense input | Non-inverting input of error amp; monitors output via resistor divider to regulate 0.6 V reference. |
| GND | Analog ground reference | Reference for sensitive analog circuitry; must be separated from PGND in layout. |
| VREG | Internal 5 V LDO output | Bias supply for gate drivers and internal logic; not for external loading (1 µF to PGND required). |
| DRVL | Low-side gate driver output | Drives lower N-MOSFET; also sets current-sense gain via resistor to PGND. |
| PGND | Power ground return | Return path for low-side driver and MOSFET source; connects to power plane under IC. |
| DRVH | High-side gate driver output | Drives upper N-MOSFET gate; sourced from BST node with integrated bootstrap rectifier. |
| SW | Switch node | Connection between high- and low-side MOSFETs; requires low-ESR ceramic capacitor to BST. |
| BST | Bootstrap supply for high-side driver | Charged via internal diode from VREG; requires external capacitor to SW for high-side gate drive. |
Key Features
| Feature | Design Value |
|---|---|
| No current-sense resistor required | Valley current sensing via DRVL-to-PGND resistor enables accurate overcurrent protection without power loss or layout sensitivity. |
| Starts into precharged load | Prevents reverse current flow during soft start, enabling safe hot-swap and rail sequencing in redundant power systems. |
| Integrated bootstrap diode | Reduces external component count by eliminating discrete Schottky diode while maintaining robust high-side drive up to 20 V VIN. |
| Resistor-programmable current-sense gain | Four gain options (2.7–26 V/V) via RES resistor allow optimization of current-limit accuracy across MOSFET RDS(on) variations. |
| Thermal overload and short-circuit protection | Hiccup-mode shutdown with 6 ms timing prevents thermal runaway and enables automatic recovery after fault removal. |
Applications
| Telecom POL Supply | DSP Core Power |
|---|---|
Use Scenario: Point-of-load regulation from 12 V or 48 V intermediate bus in base station RF modules. IC Role / Device Role / Timing Role: Synchronous buck controller managing 0.8–1.8 V core voltage with 600 kHz switching and PSM for burst-mode traffic. Use Value: Achieves >90% efficiency at 1 A–10 A loads and maintains tight output accuracy (±1%) across −40°C to +125°C junction range. | Use Scenario: Low-noise, high-transient-response supply for TI C6000 or Analog Devices SHARC DSP cores. IC Role / Device Role / Timing Role: Constant on-time valley current-mode controller delivering 0.6 V–1.2 V with sub-100 ns propagation delays for fast load-step response. Use Value: Soft-start limits in-rush current; precision enable allows synchronized power-up with FPGA configuration logic. |
| Mid-Range Server VRM | Set-Top Box SoC Supply |
Use Scenario: Secondary regulation stage feeding CPU I/O or memory interface rails in 1U rack servers. IC Role / Device Role / Timing Role: High-efficiency 600 kHz buck controller supporting all-N-MOSFET topology with integrated bootstrap diode and thermal monitoring. Use Value: 155°C thermal shutdown and hiccup-mode protection ensure reliability under sustained 15 A peak loads with minimal derating. | Use Scenario: Compact, cost-optimized 1.8 V or 3.3 V supply for Broadcom or MediaTek SoCs in consumer STBs. IC Role / Device Role / Timing Role: Synchronous controller with PSM and valley current limit enabling standby efficiency <100 µA and fast wake-up response. Use Value: Eliminates external current-sense resistor and bootstrap diode, reducing total solution size by >15% versus discrete alternatives. |
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 biasing. | Targets higher VIN (6–100 V) and higher power (>50 W); lacks PSM and 0.6 V reference accuracy. | Choose LM5116PWPR when input exceeds 20 V or when external bootstrap flexibility is needed for ultra-high-side gate drive. |
| TPS40210DGQR | Voltage-mode controller with fixed 600 kHz, no PSM, no integrated bootstrap diode, requires external current-sense resistor. | Designed for isolated forward/flyback topologies; lacks valley current sensing and precharged-load startup. | Choose TPS40210DGQR only for non-synchronous or isolated applications where valley current mode is unnecessary. |
Compared with LM5116PWPR and TPS40210DGQR, the ADP1871ACPZ-0.6-R7 delivers superior light-load efficiency via PSM, eliminates two external components (bootstrap diode and sense resistor), and guarantees ±1.0% reference accuracy-critical for low-voltage digital core rails.
Availability
ADP1871ACPZ-0.6-R7 is available at Aetrix Electronics and suitable for telecom POL supplies, DSP core power, mid-range server VRMs, and set-top box SoC supplies requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance.
Supply support for ADP1871ACPZ-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 for point-of-load applications demanding precision regulation, compact size, and robust protection in telecom, server, and consumer electronics.
FAQ
What is the switching frequency of the ADP1871ACPZ-0.6-R7?
The ADP1871ACPZ-0.6-R7 is factory-configured for 600 kHz nominal switching frequency. This value is fixed per part number variant and remains stable across input voltage (13 V–16.5 V) and temperature (−40°C to +125°C), with typical variation within ±10%. The frequency is pseudo-fixed due to constant on-time architecture but exhibits minimal load- or line-dependent drift.
Does the ADP1871ACPZ-0.6-R7 require an external current-sense resistor?
No, the ADP1871ACPZ-0.6-R7 does not require an external current-sense resistor. It implements valley current-mode sensing using the RDS(on) of the low-side MOSFET, with gain programmable via a resistor from DRVL to PGND. This eliminates power loss, layout sensitivity, and component cost associated with discrete sense resistors.
What is the purpose of the COMP/EN pin on the ADP1871ACPZ-0.6-R7?
The COMP/EN pin on the ADP1871ACPZ-0.6-R7 serves dual functions: as the output of the internal error amplifier for loop compensation, and as the precision enable input. Pulling this pin below 285 mV disables the controller; releasing it above 330 mV enables operation. Its 37 mV hysteresis prevents chatter during marginal enable conditions.
Can the ADP1871ACPZ-0.6-R7 start into a precharged output?
Yes, the ADP1871ACPZ-0.6-R7 supports startup into a precharged output. Its internal circuitry prevents reverse current flow during soft start by controlling gate drive timing and disabling the high-side MOSFET until the output reaches regulation. This feature is essential for hot-swap and redundant power architectures.
What package type is used for the ADP1871ACPZ-0.6-R7?
The ADP1871ACPZ-0.6-R7 uses a 10-lead LFCSP package (3 mm × 3 mm, 0.8 mm height) with exposed thermal pad. This package delivers θJA = 40°C/W on a 4-layer PCB, significantly better than the MSOP alternative (171.7°C/W), enabling higher power density and improved thermal margin in space-constrained applications.
ADP1871ACPZ-0.6-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad, CSP
- 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-LFCSP-WD (3x3)
ADP1871ACPZ-0.6-R7 FAQ
1.How can I place an order for ADP1871ACPZ-0.6-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1871ACPZ-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 ADP1871ACPZ-0.6-R7 reliable?
The price and inventory of ADP1871ACPZ-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 ADP1871ACPZ-0.6-R7 is usually 5 days.
3.What payment methods are accepted for ADP1871ACPZ-0.6-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1871ACPZ-0.6-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1871ACPZ-0.6-R7?
ADP1871ACPZ-0.6-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1871ACPZ-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 ADP1871ACPZ-0.6-R7?
For technical support, including ADP1871ACPZ-0.6-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1871ACPZ-0.6-R7 requirements.
6.How does Aetrix verify that ADP1871ACPZ-0.6-R7 is sourced from the original manufacturer or authorized distributors?
All ADP1871ACPZ-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 ADP1871ACPZ-0.6-R7 meets industry standards.
7.What is the process for return or replacement of ADP1871ACPZ-0.6-R7?
All ADP1871ACPZ-0.6-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1871ACPZ-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 ADP1871ACPZ-0.6-R7 part is unused and in its original packaging.
Return procedure for ADP1871ACPZ-0.6-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADP1871ACPZ-0.6-R7 Tags
-
UCC28C45DR
Texas Instruments
-
UCC28C40DR
Texas Instruments
-
UCC28C43DR
Texas Instruments
-
ZXSC410E6TA
Diodes Incorporated
-
LM3524DMX/NOPB
Texas Instruments
-
LM3489MMX/NOPB
Texas Instruments
-
MIC2102YML-TR
Microchip Technology
-
LM5148RGYR
Texas Instruments
-
TL598CDR
Texas Instruments
-
LM5155DSSR
Texas Instruments
-
LM25085MYX/NOPB
Texas Instruments
-
UCC2813DTR-0
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
