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Analog Devices Inc./Maxim Integrated ADPL13602BATE+
- Part No.:
- ADPL13602BATE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
ADPL13602BATE+.pdf
- Description:
- IC REG BUCK ADJ 2.4A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:303
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Product details
Overview
ADPL13602BATE+ from Analog Devices is a synchronous step-down DC-DC converter with integrated high-side and low-side MOSFETs, operating from 3.5V to 36V input and delivering up to 2.4A output current. It features peak-current-mode control, adjustable switching frequency (400kHz–1.5MHz), ±1.5% output voltage regulation accuracy over –40°C to +125°C, and built-in compensation eliminating external loop components. It is used in industrial control power supplies where wide VIN, high efficiency, and robust hiccup-mode overload protection are required.
For engineers reviewing the ADPL13602BATE+ datasheet, ADPL13602BATE+ pinout, ADPL13602BATE+ application, or ADPL13602BATE+ equivalent, key selection considerations include its 16-pin TQFN-EP (3mm × 3mm) package, programmable EN/UVLO threshold (1.194V–1.303V), 0.6V feedback reference, RESET monitoring with 92–97% VFB_OK thresholds, and EXTVCC bias support for improved efficiency at high VIN.
Technical Context
The ADPL13602BATE+ employs a peak-current-mode control architecture with internal transconductance error amplifier, slope compensation, and cycle-by-cycle current limiting. Its MODE pin selects between forced PWM (constant frequency, negative inductor current allowed) and DCM (discontinuous conduction, higher light-load efficiency, no negative current).
It integrates dual LDOs-IN-LDO powered from VIN and EXT-LDO powered from EXTVCC (2.448V–12V)-with automatic switchover to maximize efficiency. The device supports prebiased startup, monotonic soft-start via external capacitor on SS, and hiccup-mode OCP triggered when FB falls below 0.390V for 32,768 cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports wide industrial input rails including 12V, 24V, and 36V systems without external pre-regulation. |
| Output Current | Up to 2.4A continuous - sufficient for powering FPGAs, microcontrollers, and industrial I/O modules. |
| Switching Frequency | 400kHz to 1.5MHz - adjustable via RT resistor; default 500kHz enables compact magnetics and EMI filtering. |
| Feedback Reference | 0.600V ±1.5% - enables precise output setting from 1V to 90% of VIN using standard resistor dividers. |
| Peak Efficiency | 95% - achieved with synchronous rectification and low RDS(ON) MOSFETs (0.14Ω HS / 0.10Ω LS typical). |
| Operating Temperature | –40°C to +125°C ambient - rated for harsh industrial environments with thermal shutdown at +160°C junction. |
| Package | 16-pin TQFN-EP (3mm × 3mm) - exposed pad improves thermal performance; θJA = 38°C/W on multilayer board. |
Pinout & Package
ADPL13602BATE+ is housed in a 16-pin, 3mm × 3mm TQFN-EP package with exposed thermal pad (EP) that must be connected to SGND and thermally anchored via multiple vias. Pin functions are validated per Analog Devices' official datasheet Rev. 0 (Dec 2023).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO (Pin 1) | Enable & Input UVLO Input | Drives device ON when >1.25V; UVLO rising threshold 1.194–1.303V; falling threshold 0.75V for true shutdown. |
| VCC (Pin 2) | 1.8V LDO Output | Internal 1.8V supply for logic and gate drivers; requires 2.2μF ceramic bypass to SGND; not for external loading. |
| SGND (Pin 3) | Signal Ground Reference | Reference node for FB, SS, MODE, RESET, and EN/UVLO; must be separated from PGND except at single point. |
| MODE (Pin 4) | Operation Mode Select | Connect to SGND for forced PWM; connect to VCC for DCM; sets behavior at power-up after UVLO thresholds met. |
| SS (Pin 5) | Soft-Start Timing Input | Capacitor to SGND sets ramp time; ISS = 5μA typical; enables monotonic startup into prebiased outputs. |
| FB (Pin 6) | Feedback Voltage Input | Monitors output via resistor divider; regulates to 0.600V ±1.5%; triggers RESET when <92% or >97% of VFB_REG. |
| RT (Pin 7) | Frequency Programming | Resistor to SGND sets fSW: 400kHz (51.1kΩ), 500kHz (open), 1.5MHz (12.7kΩ); accuracy ±10%. |
| RESET (Pin 8) | Open-Drain Status Output | Asserts low when FB drops below 92% VFB_REG; deasserts 1024 cycles after FB rises above 95% VFB_REG. |
| EXTVCC (Pin 9) | External Bias Input | Bypasses IN-LDO when 2.448–12V applied; improves efficiency at high VIN; connect to SGND if unused. |
| BST (Pin 10) | Bootstrap Capacitor Node | Requires 0.1μF ceramic cap to LX; supplies gate drive for high-side MOSFET; BST–LX max voltage = +2.2V. |
| LX (Pins 11,12) | Switching Node Outputs | Connects directly to inductor; carries high di/dt pulsed current; must be routed short and wide to minimize EMI. |
| PGND (Pins 13,14) | Power Ground Terminals | Return path for high-current switching loops; connect externally to dedicated power ground plane with low inductance. |
| VIN (Pins 15,16) | Main Power Input | 3.5–36V supply input; decouple with ≥2.2μF ceramic cap placed close to pins; handles 30V/µs slew rate max. |
| EP | Exposed Thermal Pad | Mandatory connection to SGND; requires multiple thermal vias for junction-to-board heat transfer; critical for 2.4A operation. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Buck Architecture | Integrated 0.14Ω/0.10Ω HS/LS MOSFETs eliminate external Schottky diode and reduce conduction losses. |
| Internal Compensation | Eliminates external Type-II/III compensation network - simplifies design, reduces BOM count, and improves stability across full VOUT range. |
| All-Ceramic Solution Support | Stable with X7R/X5R ceramic capacitors on input/output - enables compact, low-profile layout without electrolytics. |
| Hiccup-Mode Overcurrent Protection | Triggers after 32,768 cycles when FB < 0.390V - limits average power dissipation during sustained short-circuit events. |
| Adjustable EXTVCC Bias | Accepts 2.448–12V external bias to power VCC LDO - increases efficiency by ~3–5% at VIN > 15V versus IN-LDO only. |
| Prebiased Output Startup | Both HS/LS switches remain off until first PWM pulse - prevents reverse current flow into precharged output rails. |
Applications
| Industrial Control Power Supplies | Distributed Supply Regulation |
|---|---|
|
Use Scenario: Powering PLC I/O modules, sensor interfaces, and fieldbus transceivers in factory automation cabinets with 24V rail. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator converting 24V bus to 3.3V/5V for digital logic and analog front-ends. Use Value: Wide 3.5–36V input accommodates brownout and surge conditions; hiccup mode prevents thermal runaway during field wiring faults. |
Use Scenario: Local point-of-load regulation on multi-voltage PCBs in motor drives and robotics controllers. IC Role / Device Role / Timing Role: Secondary buck stage deriving 1.2V for FPGA core, 1.8V for memory, and 5V for peripherals from intermediate 12V rail. Use Value: 400kHz–1.5MHz frequency tuning avoids noise coupling into sensitive analog or encoder timing circuits. |
| Wall Transformer Regulation | High-Voltage, Single-Board Systems |
|
Use Scenario: Replacing linear regulators in AC/DC adapter secondary side for 5V/2A USB-C PD accessory power. IC Role / Device Role / Timing Role: High-efficiency buck converter stepping down 9–12V from transformer rectifier to regulated 5V output. Use Value: 95% peak efficiency and all-ceramic support enable fanless, compact enclosure designs meeting energy standards. |
Use Scenario: Power management in railway signaling or grid-edge metering units with 36V nominal battery backup. IC Role / Device Role / Timing Role: Main system regulator accepting wide-range input (18–36V) and delivering stable 3.3V for MCU and RF modem. Use Value: –40°C to +125°C ambient rating and thermal shutdown at +160°C ensure reliability in uncontrolled outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480RQWR | 4.5–36V input, 8A output, fixed 500kHz fSW, no EXTVCC, larger 16-pin WQFN (4mm × 4mm). | Higher current capacity but less flexible frequency tuning and no external bias option for efficiency optimization. | Choose LM61480RQWR when >2.4A load or simpler fixed-frequency design is needed; ADPL13602BATE+ preferred for size-constrained 2.4A apps with EXTVCC efficiency gain. |
| MP2451DT-LF-Z | 4.5–36V input, 0.6A output, 2MHz fSW, no MODE pin, no RESET, smaller 8-pin SOIC package. | Lower current, no hiccup mode, no output monitoring - suitable only for low-power auxiliary rails. | MP2451DT-LF-Z is not a functional replacement; ADPL13602BATE+ is required for 2.4A loads, RESET supervision, and industrial temperature compliance. |
Compared with LM61480RQWR and MP2451DT-LF-Z, ADPL13602BATE+ uniquely balances 2.4A capability, 3mm × 3mm footprint, EXTVCC efficiency boost, and integrated RESET monitoring - making it optimal for space-limited industrial PoL designs requiring robust fault handling.
Availability
ADPL13602BATE+ is available at Aetrix Electronics and suitable for industrial control power supplies, distributed supply regulation, wall transformer regulation, and high-voltage single-board systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for ADPL13602BATE+ 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 ADPL13602BATE+ belongs to Analog Devices' ADPL family of high-efficiency, wide-input synchronous buck converters designed specifically for rugged industrial and automotive power applications demanding reliability, small solution size, and comprehensive protection features.
FAQ
What is the minimum recommended input voltage for ADPL13602BATE+?
The ADPL13602BATE+ has a specified minimum input voltage of 3.5V. Operation below this level may cause UVLO activation or unstable regulation. The input UVLO rising threshold is 2.95–3.26V, ensuring reliable startup only when VIN exceeds 3.5V under all temperature and process conditions. For 1V output, minimum practical VIN is ~1.11V due to duty cycle limits, but the IC will not operate unless VIN ≥ 3.5V.
Does ADPL13602BATE+ support prebiased output startup?
Yes, ADPL13602BATE+ supports monotonic, prebiased output startup. When the output is precharged, both high-side and low-side MOSFETs remain off until the internal PWM comparator commands the first pulse. This prevents reverse current flow and ensures smooth, controlled ramp-up of the output voltage to the target value - critical for hot-swap and redundant power systems.
How is the switching frequency set on ADPL13602BATE+?
The switching frequency of ADPL13602BATE+ is set via a resistor from the RT pin to SGND. The relationship is RRT(kΩ) = 20625/fSW(kHz) − 1. Common values include 51.1kΩ for 400kHz, open circuit for 500kHz (default), and 12.7kΩ for 1.5MHz. Frequency accuracy is ±10%, and the device supports operation from 400kHz to 1.5MHz to optimize size, efficiency, and EMI performance.
What protection features does ADPL13602BATE+ include?
ADPL13602BATE+ includes hiccup-mode overcurrent protection (triggered when FB < 0.390V), thermal shutdown at +160°C junction with 20°C hysteresis, input UVLO with programmable threshold, output voltage monitoring with open-drain RESET, and bootstrap undervoltage lockout. These features collectively prevent damage during short circuits, overtemperature, input brownouts, and output faults - essential for unattended industrial deployments.
Can ADPL13602BATE+ operate without an external EXTVCC supply?
Yes, ADPL13602BATE+ operates fully without EXTVCC. When EXTVCC is left unconnected or tied to SGND, the internal IN-LDO powers VCC from VIN. However, applying 2.448–12V to EXTVCC bypasses the IN-LDO and improves overall efficiency - especially at VIN > 15V - by reducing LDO dropout losses. The device automatically selects the appropriate LDO source based on EXTVCC voltage level.
ADPL13602BATE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 32.4V
- Current - Output:
- 2.4A
- Frequency - Switching:
- 400kHz ~ 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
ADPL13602BATE+ FAQ
1.How can I place an order for ADPL13602BATE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADPL13602BATE+ 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 ADPL13602BATE+ reliable?
The price and inventory of ADPL13602BATE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADPL13602BATE+ is usually 5 days.
3.What payment methods are accepted for ADPL13602BATE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADPL13602BATE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADPL13602BATE+?
ADPL13602BATE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADPL13602BATE+ 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 ADPL13602BATE+?
For technical support, including ADPL13602BATE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADPL13602BATE+ requirements.
6.How does Aetrix verify that ADPL13602BATE+ is sourced from the original manufacturer or authorized distributors?
All ADPL13602BATE+ 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 ADPL13602BATE+ meets industry standards.
7.What is the process for return or replacement of ADPL13602BATE+?
All ADPL13602BATE+ units undergo pre-shipment inspection (PSI). If there is an issue with ADPL13602BATE+, 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 ADPL13602BATE+ part is unused and in its original packaging.
Return procedure for ADPL13602BATE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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