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Analog Devices Inc. ADPL16000CATA+T
- Part No.:
- ADPL16000CATA+T
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN
- Datasheet:
-
ADPL16000CATA+T.pdf
- Description:
- IC REG BUCK ADJ 0.4V 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,603
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Product details
Overview
ADPL16000CATA+T from Analog Devices is a synchronous step-down DC-DC converter with integrated MOSFETs, delivering up to 400mA at adjustable output voltages from 0.9V to 0.89 × VIN. It operates across a 4.5V–60V input range, features internal compensation and soft-start, and uses an 8-pin 2mm × 2mm TDFN-CU package for industrial point-of-load regulation in space-constrained sensors and 4–20mA loops.
For engineers reviewing the ADPL16000CATA+T datasheet, ADPL16000CATA+T pinout, ADPL16000CATA+T application, or ADPL16000CATA+T equivalent, key selection criteria include its PFM/PWM mode configurability, 92% peak efficiency, 2.2µA shutdown current, hiccup-mode overcurrent protection, and built-in RESET monitoring - all validated for -40°C to +125°C ambient operation.
Technical Context
The ADPL16000CATA+T implements peak-current-mode control with a latched MODE pin that selects between fixed-frequency PWM (for EMI-sensitive systems) and light-load-optimized PFM (with pulse skipping and zero-negative-inductor-current). Its internal 5V LDO powers gate drivers and logic, while the FB/VOUT pin supports adjustable regulation via external resistor divider.
It integrates high-side pMOS (1.8Ω typ @ +25°C) and low-side nMOS (0.62Ω typ @ +25°C) switches, enabling full integration with only VIN, LX, VOUT, and GND external components. Protection includes cycle-by-cycle current limiting (0.62A typ), runaway current detection (0.75A typ), thermal shutdown at 166°C, and output voltage monitoring via open-drain RESET with 2ms delay and 92–95% trip thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports wide industrial input rails including 12V, 24V, and 48V systems without external pre-regulation. |
| Output Current | Up to 400mA - sufficient for powering microcontrollers, analog front-ends, and isolated interface ICs in compact modules. |
| Output Voltage Range | Adjustable 0.9V to 0.89 × VIN - enables precise rail generation (e.g., 1.8V, 2.5V, 3.3V, 5V, 12V) using external feedback resistors. |
| Switching Frequency | 465kHz to 535kHz - fixed-frequency PWM operation avoids audible noise and simplifies EMI filtering design. |
| Peak Efficiency | 92% - achieved with synchronous rectification and low RDS(on) MOSFETs, reducing thermal load in sealed enclosures. |
| Shutdown Current | 2.2µA (typ) - enables ultra-low-power sleep modes in battery-backed or energy-harvested sensor nodes. |
| Operating Temperature | -40°C to +125°C ambient - qualified for harsh environments including motor drives, HVAC controls, and industrial PLC I/O modules. |
Pinout & Package
ADPL16000CATA+T is housed in an 8-pin, 2mm × 2mm TDFN-CU package with exposed thermal pad (pin 7 GND connected to pad). The package supports high power density and efficient heat dissipation in minimal PCB area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power Input | Primary input supply connection; requires local 1µF X7R ceramic bypass to GND for stability and noise suppression. |
| EN/UVLO (Pin 2) | Enable & Input UVLO | Active-high enable with programmable turn-on threshold (1.215V typ rising); enables system-level brownout protection via external resistor divider. |
| VCC (Pin 3) | Internal LDO Output | 5V regulated supply for internal circuitry; must be bypassed with ≥1µF capacitor to GND to maintain regulation and reduce switching noise coupling. |
| FB/VOUT (Pin 4) | Feedback Input | Connects to resistor divider for adjustable output; sets regulation point at 0.900V reference - determines final VOUT = 0.900V × (1 + R1/R2). |
| MODE (Pin 5) | Control Mode Select | Ground for forced-PWM; floating for auto-switching PFM - configures efficiency vs. EMI trade-off at power-up only. |
| RESET (Pin 6) | Open-Drain Monitor | Pulls low when VOUT drops below 92% of nominal; high-impedance after 2ms delay when VOUT exceeds 95% - enables system reset sequencing and fault logging. |
| GND (Pin 7) | Power Ground | Main ground reference for VIN, LX, and internal circuits; must connect to thermal pad and low-impedance ground plane to ensure stability and thermal performance. |
| LX (Pin 8) | Switch Node | Connection to inductor switch node; carries high di/dt current - requires short, low-inductance trace routing to minimize EMI and voltage spikes. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous MOSFET Integration | Eliminates need for external Schottky diode and reduces conduction losses - improves full-load efficiency and eases layout in space-constrained designs. |
| Internal Compensation | Removes requirement for external compensation network - accelerates design cycle and ensures stable loop response across operating conditions. |
| Programmable EN/UVLO Threshold | Allows custom input undervoltage lockout using resistor divider - supports flexible system-level power sequencing and brownout recovery behavior. |
| Monotonic Startup into Prebiased Output | Prevents reverse current flow during power-up when output is already charged - essential for multi-rail systems with powered peripherals or back-fed supplies. |
| Hiccup-Mode Overcurrent Protection | Disables switching for 131ms upon runaway current detection (0.75A) or sustained undervoltage - protects MOSFETs and inductor under short-circuit or overload faults. |
Applications
| Industrial Sensors | 4–20mA Current Loops |
|---|---|
Use Scenario: Powering MEMS pressure sensors and RTD signal conditioners in remote field transmitters with limited board area and wide input voltage variation (e.g., 12–48V loop-powered systems). IC Role / Device Role / Timing Role: Primary point-of-load regulator generating stable 3.3V or 5V rail from unregulated loop supply; provides RESET signal for sensor self-test and fault reporting. Use Value: Enables single-supply operation with 92% efficiency at 100mA load, minimizing self-heating in sealed IP67 housings while meeting CISPR32 Class B emissions. | Use Scenario: Supplying precision DACs, op-amps, and isolators in 4–20mA transmitter modules where input voltage may vary from 12V to 36V due to line drop or supply tolerance. IC Role / Device Role / Timing Role: High-voltage buck converter replacing discrete LDOs; delivers regulated 5V rail with internal soft-start to avoid current surges during loop commissioning. Use Value: Reduces component count by eliminating external pass transistor and heatsink; 2.2µA shutdown current extends battery life in portable calibrators. |
| HVAC and Building Control | General Purpose Point-of-Load |
Use Scenario: Powering wireless Zigbee/BLE modules, temperature/humidity sensors, and valve actuators in smart thermostats and zone controllers operating from 24V AC/DC building supplies. IC Role / Device Role / Timing Role: Compact DC-DC regulator supporting both PWM (for RF coexistence) and PFM (for standby efficiency) modes via MODE pin configuration. Use Value: Achieves >85% efficiency at 10mA load in PFM mode - extends battery backup runtime during AC loss while maintaining fast transient response for actuator control. | Use Scenario: Generating auxiliary rails (e.g., 1.8V for FPGAs, 2.5V for ADCs) on industrial embedded boards where main supply is 12V or 24V and layout space is constrained. IC Role / Device Role / Timing Role: Adjustable-output synchronous buck converter with internal MOSFETs and feedback divider - replaces multi-component solutions requiring external compensation and driver stages. Use Value: Simplifies BOM with only inductor, input/output capacitors, and two feedback resistors; 4.1ms soft-start prevents inrush-induced supply droop on shared rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QWRGRRQ1 | 4.5V–65V input, 300mA output, 500kHz fixed frequency, no integrated VCC LDO - requires external bias supply. | Automotive AEC-Q100 qualified; lacks RESET and programmable UVLO - less suitable for industrial fault logging. | Select if automotive qualification and higher VIN max are required; accept added complexity of external bias and missing monitoring features. |
| MAX20004AATP+T | 3.5V–65V input, 400mA output, 2.2MHz switching, integrated 5V LDO, but no PFM mode - fixed PWM only. | Smaller 2mm × 2mm TDFN package; higher fSW enables smaller inductors but increases EMI risk in noise-sensitive analog sections. | Select for ultra-compact layouts needing <1µH inductors; avoid where light-load efficiency or EMI sensitivity mandates PFM capability. |
Compared with LM5164QWRGRRQ1 and MAX20004AATP+T, ADPL16000CATA+T uniquely combines adjustable output, integrated VCC LDO, PFM/PWM mode flexibility, and built-in RESET in a thermally enhanced TDFN-CU package - making it optimal for industrial point-of-load designs requiring robust fault monitoring and wide-input adaptability without external biasing.
Availability
ADPL16000CATA+T is available at Aetrix Electronics and suitable for industrial sensors, 4–20mA current loops, HVAC controls, and general-purpose point-of-load applications requiring stable component supply, long-term manufacturability, and compliance with CISPR32 Class B emissions standards.
Supply support for ADPL16000CATA+T 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 ADPL16000 product line delivers ultra-small, high-efficiency synchronous buck regulators targeting industrial point-of-load conversion where wide input range, low quiescent current, and integrated protection are critical - especially in space- and reliability-constrained sensor and control modules.
FAQ
What output voltage options does the ADPL16000CATA+T support?
The ADPL16000CATA+T is the adjustable version of the ADPL16000 family and supports output voltages from 0.9V to 0.89 × VIN. It uses an external resistor divider connected to the FB/VOUT pin, referenced to an internal 0.900V feedback threshold. This allows precise setting of common rails such as 1.8V, 2.5V, 3.3V, 5V, or 12V. Unlike the fixed-output ADPL16000A (3.3V) and ADPL16000B (5V), the ADPL16000CATA+T requires two external resistors for configuration - confirmed in the General Description and Electrical Characteristics tables of the datasheet.
How does the MODE pin affect operation of the ADPL16000CATA+T?
The MODE pin on the ADPL16000CATA+T selects between two control schemes at power-up: grounding MODE enables forced-PWM mode (constant 500kHz switching, negative inductor current allowed), while leaving MODE unconnected enables PFM mode (pulse-skipping at light loads, zero-negative-current, 95µA typical quiescent current). The state is latched after EN/UVLO and VCC exceed their UVLO thresholds - subsequent changes have no effect. This dual-mode capability makes ADPL16000CATA+T adaptable to both EMI-sensitive and ultra-low-power applications without hardware redesign.
Does the ADPL16000CATA+T include built-in protection features?
Yes, the ADPL16000CATA+T integrates multiple protection functions: cycle-by-cycle peak current limiting (0.62A typ), runaway current detection (0.75A typ) triggering hiccup mode with 131ms timeout, thermal shutdown at 166°C with 10°C hysteresis, overvoltage monitoring via open-drain RESET (92–95% trip window), and monotonic startup into prebiased outputs. These are explicitly documented in the Absolute Maximum Ratings, Electrical Characteristics, and Detailed Description sections - confirming robust operation in industrial environments with variable loads and fault conditions.
What is the package type and thermal performance of the ADPL16000CATA+T?
The ADPL16000CATA+T uses an 8-pin, 2mm × 2mm TDFN-CU package with exposed thermal pad (connected to Pin 7 GND). Its continuous power dissipation is rated at 496mW at TA = +70°C, derating 6.2mW/°C above that temperature. The package's low thermal resistance enables reliable operation at full 400mA load in ambient temperatures up to +125°C - verified in the Absolute Maximum Ratings table and Outline Dimensions section, where land pattern and soldering profiles (reflow at +260°C) are specified for manufacturability.
Can the ADPL16000CATA+T operate with ceramic capacitors only?
Yes, the ADPL16000CATA+T is fully compatible with all-ceramic capacitor designs - explicitly stated in the FEATURES list and validated in all Typical Application Circuits (e.g., Figure 1 uses 1µF X7R on VIN and 22µF on VOUT). Its internally compensated current-mode architecture eliminates the need for electrolytic or tantalum output capacitors. This reduces board area, improves reliability, and avoids aging-related capacitance drift - a key advantage for long-lifecycle industrial deployments where maintenance is impractical.
ADPL16000CATA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 53.4V
- Current - Output:
- 0.4V
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x2)
ADPL16000CATA+T FAQ
1.How can I place an order for ADPL16000CATA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for ADPL16000CATA+T 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 ADPL16000CATA+T reliable?
The price and inventory of ADPL16000CATA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADPL16000CATA+T is usually 5 days.
3.What payment methods are accepted for ADPL16000CATA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADPL16000CATA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADPL16000CATA+T?
ADPL16000CATA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADPL16000CATA+T 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 ADPL16000CATA+T?
For technical support, including ADPL16000CATA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADPL16000CATA+T requirements.
6.How does Aetrix verify that ADPL16000CATA+T is sourced from the original manufacturer or authorized distributors?
All ADPL16000CATA+T 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 ADPL16000CATA+T meets industry standards.
7.What is the process for return or replacement of ADPL16000CATA+T?
All ADPL16000CATA+T units undergo pre-shipment inspection (PSI). If there is an issue with ADPL16000CATA+T, 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 ADPL16000CATA+T part is unused and in its original packaging.
Return procedure for ADPL16000CATA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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