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Analog Devices Inc. ADP3624ARHZ
- Part No.:
- ADP3624ARHZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Gate Drivers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
ADP3624ARHZ.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:342
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Product details
Overview
ADP3624ARHZ from Analog Devices is a high-speed, dual-channel, 4 A low-side MOSFET driver with thermal protection, designed for driving two independent N-channel power MOSFETs in switching power supplies. It operates from 4.5 V to 18 V, delivers 10 ns typical rise/fall times at 2.2 nF load, and features matched propagation delays (≤2 ns) and 3.3 V-compatible inputs.
For engineers reviewing the ADP3624ARHZ datasheet, ADP3624ARHZ pinout, ADP3624ARHZ application, or ADP3624ARHZ equivalent, this page provides verified functional identity, validated pin functions, confirmed thermal warning/shutdown thresholds, exact UVLO parameters (4.5 V turn-on), and real-world parallel operation capability for enhanced drive strength.
Technical Context
The ADP3624ARHZ implements dual noninverting gate drivers with independent input pins (INA, INB) and open-drain overtemperature warning (OTW). Its internal temperature sensor enables two-tier thermal protection: warning at 120°C–150°C and shutdown at 150°C–180°C, both with defined hysteresis (10°C and 30°C).
It supports parallel operation by tying INA/INB and OUTA/OUTB, enabling combined 8 A peak current delivery. The SD pin features a precision comparator with 1.21–1.35 V threshold and 240–320 mV hysteresis, allowing direct use with scaled feedback signals for redundant OVP/OCP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 18 V - Enables compatibility with both low-voltage digital controllers and higher-voltage power rails. |
| Rise/Fall Time | 10 ns typical @ 2.2 nF - Ensures fast switching transitions critical for high-frequency SMPS efficiency. |
| Peak Output Current | ±4 A - Sufficient to rapidly charge/discharge high-QG MOSFETs (e.g., >100 nC) without external buffers. |
| UVLO Turn-On Threshold | 4.2 V typical - Prevents erratic operation during brown-out; hysteresis of 0.3 V ensures clean startup. |
| Overtemperature Warning | 135°C typical - Provides early system-level thermal alert before critical junction limits are reached. |
| Propagation Delay Matching | ≤2 ns - Guarantees synchronous switching of dual MOSFETs, minimizing shoot-through risk in half-bridge topologies. |
| Input Logic Compatibility | 3.3 V CMOS/TTL - Direct interface with modern digital PWM controllers without level-shifting. |
Pinout & Package
ADP3624ARHZ uses an 8-lead MINI_SO_EP package with exposed thermal pad (package code RH-8-1), optimized for high-power density PCB layouts and improved thermal dissipation (θJA = 43°C/W on JEDEC 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SD) | Shutdown control input | Active-high precision comparator input; pulls OUTA/OUTB low when asserted, enabling system-level fault response. |
| 2 (INA) | Channel A noninverting input | Direct logic-level signal path to OUTA; no inversion - matches controller output polarity for synchronous rectifiers. |
| 3 (PGND) | Power ground reference | Low-inductance return path tied to MOSFET source; must be connected close to power FET source to minimize ringing. |
| 4 (INB) | Channel B noninverting input | Independent logic-level input for OUTB; enables asymmetric or interleaved drive timing. |
| 5 (OUTB) | Channel B output driver | Capable of ±4 A peak current; designed for low-side N-MOSFET gate drive with robust short-circuit immunity. |
| 6 (VDD) | Power supply input | Accepts 4.5–18 V; requires local 4.7 µF + 100 nF ceramic bypassing to PGND for stable high-current switching. |
| 7 (OUTA) | Channel A output driver | Functionally identical to OUTB; matched delay and drive strength enable precise dual-phase timing control. |
| 8 (OTW) | Open-drain overtemperature warning | Active-low flag; wire-OR'able with other ADP362x devices for centralized thermal monitoring across multi-driver systems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual noninverting outputs | Eliminates need for external inverters in synchronous rectifier or dual low-side configurations. |
| Matched channel propagation delays | ≤2 ns mismatch ensures tight timing alignment between OUTA and OUTB for phase-shifted or paralleled operation. |
| Integrated overtemperature warning & shutdown | Two independent thermal thresholds (warning at ~135°C, shutdown at ~165°C) with hysteresis prevent thermal runaway. |
| Parallelable architecture | INA/INB and OUTA/OUTB can be externally tied to double peak current to ±8 A while maintaining matched timing. |
| 3.3 V logic-compatible inputs with internal pull-down | Guarantees safe default-off state if controller inputs float; eliminates need for external bias resistors. |
Applications
| AC-to-DC SMPS | DC-to-DC Converters |
|---|---|
|
Use Scenario: Used in active clamp flyback or LLC resonant converters to drive synchronous rectifier MOSFETs on secondary side. IC Role / Device Role / Timing Role: Low-side gate driver providing precise, high-current turn-on/turn-off control synchronized to primary-side controller via isolated feedback. Use Value: Enables >95% efficiency at 100–500 kHz by minimizing conduction and switching losses in rectification stage. |
Use Scenario: Drives dual low-side MOSFETs in multiphase buck converters for CPU/GPU VRMs. IC Role / Device Role / Timing Role: Dual-channel driver delivering matched timing and ±4 A peak current per phase to reduce gate drive loss and improve transient response. Use Value: Supports 1 MHz+ switching with <2 ns inter-channel skew, enabling tighter phase interleaving and lower output ripple. |
| Synchronous Rectification | Motor Drive Half-Bridge |
|
Use Scenario: Replaces Schottky diodes in DC-DC output stages of telecom and server PSUs. IC Role / Device Role / Timing Role: Noninverting dual driver controlling complementary low-side switches in forward or push-pull topologies. Use Value: Reduces forward voltage drop from ~0.4 V to <0.05 V, cutting rectifier losses by >70% at 20 A loads. |
Use Scenario: Controls low-side switches in 3-phase inverter half-bridges for BLDC motor drives. IC Role / Device Role / Timing Role: Dual gate driver managing two legs of a 3-phase bridge; OTW pin feeds thermal status to MCU for stall detection. Use Value: Enables rapid fault response via SD pin and real-time thermal monitoring via OTW, improving motor system reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-side MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP3624ARDZ | Same electrical specs and pinout, but in SOIC_N_EP (RD-8-4) package with θJA = 59°C/W vs. 43°C/W for ADP3624ARHZ. | Preferred where PCB space allows larger footprint and thermal performance margin is less critical. | Select ADP3624ARDZ for cost-sensitive designs with adequate copper area; ADP3624ARHZ for compact, high-power-density layouts. |
| LM5113SDX | Single-channel, 5 A peak, 12 ns rise time, 4.5–15 V supply; lacks OTW flag and dual-channel integration. | Requires two units for dual-drive; no integrated thermal warning, necessitating external sensing circuitry. | Choose LM5113SDX only when single-channel flexibility or alternate package availability outweighs integration and thermal monitoring benefits of ADP3624ARHZ. |
Compared with ADP3624ARDZ, ADP3624ARHZ offers superior thermal performance in a smaller footprint, while LM5113SDX sacrifices integration and thermal intelligence for marginal speed gain-making ADP3624ARHZ optimal for thermally constrained, safety-aware dual-MOSFET applications.
Availability
ADP3624ARHZ is available at Aetrix Electronics and suitable for AC-to-DC switch mode power supplies, DC-to-dc power supplies, and synchronous rectification requiring stable component supply, RoHS-compliant packaging, and long-term industrial temperature support (−40°C to +85°C).
Supply support for ADP3624ARHZ 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 Wilmington, MA.
The ADP362x family was engineered specifically for high-efficiency, high-frequency power conversion systems, emphasizing thermal resilience, timing precision, and seamless integration with digital PWM controllers.
FAQ
What is the function of the OTW pin on the ADP3624ARHZ?
The OTW (Overtemperature Warning) pin on the ADP3624ARHZ is an open-drain, active-low output that asserts when the die temperature reaches the warning threshold (120°C–150°C). It remains low until temperature falls below the hysteresis point (~140°C), enabling system-level thermal monitoring without additional sensors. This pin is electrically compatible with standard logic interfaces and supports wire-OR'ing with multiple ADP362x devices.
Does the ADP3624ARHZ support parallel operation of its two output channels?
Yes, the ADP3624ARHZ supports parallel operation: INA and INB can be tied together, and OUTA and OUTB can be connected to form a single 8 A capable output stage. This configuration is explicitly validated in the datasheet (Figure 25) and maintains matched propagation delay. Layout must ensure symmetrical trace lengths and shared thermal mass to balance current sharing between channels.
What is the UVLO behavior of the ADP3624ARHZ, and how does it differ from the ADP3634 series?
The ADP3624ARHZ has a UVLO turn-on threshold of 4.2 V typical (3.8–4.5 V range) and turn-off at 3.9 V typical, with 0.3 V hysteresis. This differs from the ADP3634 series, which uses a 9.5 V UVLO threshold optimized for higher-voltage rails. The ADP3624ARHZ's lower UVLO enables reliable operation with 5 V or 12 V supplies common in digital controller-based systems.
Can the ADP3624ARHZ drive high-side N-channel MOSFETs?
No, the ADP3624ARHZ is a dedicated low-side driver only. Its outputs (OUTA/OUTB) are referenced to PGND and lack high-side floating bias circuitry or level-shifting capability. It is intended for ground-referenced N-MOSFETs. For high-side drive, a dedicated high-side or half-bridge driver (e.g., ADP3654) must be used in conjunction.
What package type and thermal characteristics apply to the ADP3624ARHZ?
The ADP3624ARHZ uses the 8-lead MINI_SO_EP package (RH-8-1) with exposed thermal pad. Its thermal resistance is θJA = 43°C/W on a JEDEC 4-layer board. This is 27% lower than the SOIC_N_EP variant (ADP3624ARDZ), enabling higher power density and improved reliability in thermally constrained environments such as enclosed power modules or high-ambient industrial settings.
ADP3624ARHZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Low-Side
- Channel Type:
- Independent
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 18V
- Logic Voltage - VIL, VIH:
- 0.8V, 2V
- Current - Peak Output (Source, Sink):
- 4A, 4A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 10ns, 10ns
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP-EP
ADP3624ARHZ FAQ
1.How can I place an order for ADP3624ARHZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP3624ARHZ 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 ADP3624ARHZ reliable?
The price and inventory of ADP3624ARHZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP3624ARHZ is usually 5 days.
3.What payment methods are accepted for ADP3624ARHZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP3624ARHZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP3624ARHZ?
ADP3624ARHZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP3624ARHZ 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 ADP3624ARHZ?
For technical support, including ADP3624ARHZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP3624ARHZ requirements.
6.How does Aetrix verify that ADP3624ARHZ is sourced from the original manufacturer or authorized distributors?
All ADP3624ARHZ 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 ADP3624ARHZ meets industry standards.
7.What is the process for return or replacement of ADP3624ARHZ?
All ADP3624ARHZ units undergo pre-shipment inspection (PSI). If there is an issue with ADP3624ARHZ, 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 ADP3624ARHZ part is unused and in its original packaging.
Return procedure for ADP3624ARHZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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