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Analog Devices Inc./Maxim Integrated ADPL20502AANT+T
- Part No.:
- ADPL20502AANT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-XFBGA, WLBGA
- Datasheet:
-
ADPL20502AANT+T.pdf
- Description:
- IC REG BOOST PROG 6WLP
- Quantity:
- Payment:
- Shipping:
Inventory:2,302
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Product details
Overview
ADPL20502AANT+T from Analog Devices is a synchronous boost converter IC delivering up to 2A peak inductor current, operating from 600mV to 5.5V input with True Shutdown™, 1nA shutdown current, and 96% peak efficiency. It features single-resistor-adjustable output (2.3V–5.2V), 500nA quiescent supply current referred to output, and supports battery-powered wearable audio and IoT sensors.
For engineers reviewing the ADPL20502AANT+T datasheet, ADPL20502AANT+T pinout, ADPL20502AANT+T application, or ADPL20502AANT+T equivalent, key selection criteria include ultra-low IQ operation, output disconnect during shutdown, cycle-by-cycle current limiting, thermal/short-circuit protection, and WLP package compatibility with space-constrained portable designs.
Technical Context
The ADPL20502AANT+T implements an adaptive on-time pulse-frequency modulation (PFM) control scheme that dynamically transitions between Ultra-Low-Power Mode (ULPM), Low-Power Mode (LPM), and High-Power Mode (HPM) based on load current. ULPM enables 500nA output-referred quiescent current and 90% efficiency at 500μA, while HPM delivers tight load regulation (±1.2%) via error amplifier feedback.
True Shutdown™ fully isolates OUT from IN using proprietary synchronous rectifier control, eliminating reverse current and enabling startup into precharged output capacitors. Protection includes cycle-by-cycle 2A inductor current limit, short-circuit detection (VOUT < VIN − 1V), and thermal shutdown at +165°C with 15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 600mV to 5.5V - supports direct connection to single-cell Li-ion, NiMH, or alkaline batteries down to near-dead voltage. |
| Output Voltage Range | 2.3V to 5.2V in 100mV steps - set by single resistor to GND on RSEL pin; eliminates need for feedback divider network. |
| Peak Inductor Current Limit | 2.0A typical - ensures robust transient response and stable operation under heavy loads without external current sensing. |
| Quiescent Supply Current (OUT) | 500nA - enables multi-year battery life in always-on sensor nodes and wearables operating at microamp loads. |
| Shutdown Current | 1nA - minimizes standby leakage, critical for systems requiring long-term storage or infrequent wake-up cycles. |
| Efficiency | 96% peak, ≥90% at 500μA - maintains high conversion efficiency across full load range from nanoamps to 2A. |
| Operating Temperature | −40°C to +125°C - qualified for industrial and medical applications including clinical instrumentation and emergency lighting. |
Pinout & Package
ADPL20502AANT+T uses a 1.58mm × 0.89mm, 0.4mm pitch, 6-bump Wafer-Level Package (WLP) with 3×2 bump arrangement. The package integrates power and analog ground internally and requires direct PCB connection of bumps to appropriate nets.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT | Regulated Output | Delivers programmed output voltage; connects directly to 22μF X7R ceramic capacitor for stability and low ripple. |
| LX | Switching Node | Connects to 1.0μH inductor; carries high di/dt switching current; must be routed with minimal loop area to reduce EMI. |
| GND | Power Ground | Primary return path for high-current paths; ties to PCB ground plane with multiple vias for thermal and noise performance. |
| RSEL | Voltage Select Input | Single resistor to GND sets output voltage; total capacitance must remain below 2pF to ensure accurate detection within 600μs. |
| IN | Input Supply | Accepts wide input range (600mV–5.5V); connects to 22μF X7R ceramic capacitor to suppress input ripple and source peak currents. |
| EN | Enable Control | Logic-level input (0.6V threshold); asserts True Shutdown when pulled below 0.55V, disconnecting OUT from IN. |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ | Zero forward/reverse current between IN and OUT during disable - eliminates need for external load switches in battery-critical systems. |
| Adaptive PFM Control | Automatic mode switching (ULPM/LPM/HPM) optimizes efficiency from 10μA to 2A - no manual configuration required. |
| Single-Resistor Output Programming | 32 discrete output voltages (2.3V–5.2V) selected via one standard 1% resistor - reduces BOM count and PCB footprint vs. dual-resistor feedback. |
| Output Short-Circuit Protection | Detects VOUT < VIN − 1V and disables synchronous rectifier - prevents damage during accidental shorts without external circuitry. |
| Thermal Shutdown | Turns off converter at +165°C junction temperature with automatic recovery at +150°C - protects against sustained overload or poor heatsinking. |
Applications
| Wearable Audio Systems | IoT Sensor Nodes |
|---|---|
Use Scenario: Powering Class-D amplifiers and MEMS microphones in compact earbuds or hearables with single-cell battery. IC Role / Device Role / Timing Role: Boost converter providing regulated 3.3V or 5.0V rail from depleted 1.2V–2.8V battery voltage. Use Value: 500nA quiescent current extends playback time; True Shutdown prevents battery drain during sleep mode. | Use Scenario: Supplying 3.3V to BLE/WiFi modules and environmental sensors in battery-operated smart agriculture nodes. IC Role / Device Role / Timing Role: Primary voltage regulator enabling intermittent transmission bursts while maintaining ultra-low average power draw. Use Value: 90% efficiency at 500μA ensures >5-year battery life; 600mV startup allows operation until battery reaches end-of-life. |
| Clinical Instrumentation | Emergency Lighting |
Use Scenario: Powering optical biosensors and low-noise ADCs in handheld diagnostic devices with strict EMC and reliability requirements. IC Role / Device Role / Timing Role: Isolated DC-DC stage delivering clean, regulated supply independent of battery voltage sag. Use Value: −40°C to +125°C rating supports sterilization and field deployment; short-circuit protection avoids fault propagation. | Use Scenario: Driving white LEDs from backup supercapacitors or NiCd batteries in exit signs and safety lighting. IC Role / Device Role / Timing Role: High-efficiency boost controller sustaining LED brightness as input voltage decays from 3.0V to 0.9V. Use Value: 900mV minimum startup voltage maximizes usable energy; thermal shutdown prevents overheating during extended operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61291DRVR | 0.7V min input, 1.5A max output, 2.5μA IQ, 2mm × 2mm WSON package | Lacks True Shutdown; outputs remain connected to input in shutdown, risking reverse current | Choose when lower cost and simpler layout outweigh need for zero-shutdown leakage. |
| MAX20420ATCA+ | 0.5V min input, 2A output, 2.5μA IQ, integrated inductor option, 2.1mm × 1.6mm FC2QFN | No RSEL-based voltage programming; fixed or I²C-configurable outputs only | Prefer when board space is extremely constrained and programmability via resistor is not required. |
Compared with TPS61291DRVR and MAX20420ATCA+, the ADPL20502AANT+T uniquely combines sub-1nA shutdown current, true output isolation, and resistor-programmable voltage in a 1.58mm × 0.89mm WLP - making it optimal for ultra-long-life, space-limited, and battery-sensitive applications where every nanoamp counts.
Availability
ADPL20502AANT+T is available at Aetrix Electronics and suitable for wearable audio systems, IoT sensor nodes, clinical instrumentation, emergency lighting, and other applications requiring stable component supply with guaranteed long-term availability.
Supply support for ADPL20502AANT+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 ADPL20502 product line targets ultra-low-power, battery-operated systems demanding extended runtime, small solution size, and robust protection - especially in wearables, medical sensors, and industrial IoT endpoints.
FAQ
What is the minimum input voltage required for ADPL20502AANT+T to start up?
The ADPL20502AANT+T requires a minimum startup input voltage of 900mV under typical conditions (RL ≥ 3kΩ, TJ = +25°C). Once running, it sustains regulation down to 600mV input. This dual-threshold behavior enables operation across nearly the full discharge curve of primary and rechargeable cells. The ADPL20502AANT+T achieves this via adaptive startup sequencing that first establishes partial regulation before acquiring the RSEL resistor value.
How does True Shutdown™ in ADPL20502AANT+T differ from standard enable functionality?
True Shutdown™ in ADPL20502AANT+T completely disconnects the output from the input using internal synchronous rectifier control, drawing only 1nA from VIN and preventing any forward or reverse current flow. Standard enable circuits often leave the body diode of the high-side switch forward-biased, allowing parasitic discharge. The ADPL20502AANT+T's architecture eliminates this leakage path, enabling safe use with precharged outputs and zero standby drain.
Can ADPL20502AANT+T be used with a 5.5V output target?
Yes - the ADPL20502AANT+T supports a 5.5V output setting by shorting the RSEL pin to GND, as specified in Table 4 of the datasheet. However, ULPM (Ultra-Low-Power Mode) is disabled at 5.4V and 5.5V outputs, meaning quiescent current rises above 500nA and light-load efficiency decreases. For applications requiring both 5.5V output and nanoamp IQ, consider using the fixed-output version ADPL20502AATA+ with factory-programmed 5.5V and external enable control.
What is the recommended inductor value for ADPL20502AANT+T, and why?
Analog Devices recommends a 1.0μH shielded power inductor for ADPL20502AANT+T. This value balances peak current handling (2A limit), physical size, AC losses, and transient response across the full input/output range. Lower values increase ripple and stress switching components; higher values reduce ripple but degrade light-load efficiency and slow transient recovery. The ADPL20502AANT+T's adaptive on-time control is optimized for 1.0μH, ensuring stable mode transitions between ULPM, LPM, and HPM.
Does ADPL20502AANT+T require external compensation components?
No - the ADPL20502AANT+T uses an internally compensated control loop and requires no external compensation components. Its adaptive PFM architecture and fixed-gain error amplifier eliminate the need for loop compensation networks. Stability is ensured across all valid input/output combinations and load conditions when using the recommended 22μF X7R ceramic input and output capacitors placed per the layout guidelines - specifically with short, low-inductance connections to GND and OUT pins.
ADPL20502AANT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-XFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.95V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.3V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLP (1.58x.89)
ADPL20502AANT+T FAQ
1.How can I place an order for ADPL20502AANT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for ADPL20502AANT+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 ADPL20502AANT+T reliable?
The price and inventory of ADPL20502AANT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADPL20502AANT+T is usually 5 days.
3.What payment methods are accepted for ADPL20502AANT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADPL20502AANT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADPL20502AANT+T?
ADPL20502AANT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADPL20502AANT+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 ADPL20502AANT+T?
For technical support, including ADPL20502AANT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADPL20502AANT+T requirements.
6.How does Aetrix verify that ADPL20502AANT+T is sourced from the original manufacturer or authorized distributors?
All ADPL20502AANT+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 ADPL20502AANT+T meets industry standards.
7.What is the process for return or replacement of ADPL20502AANT+T?
All ADPL20502AANT+T units undergo pre-shipment inspection (PSI). If there is an issue with ADPL20502AANT+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 ADPL20502AANT+T part is unused and in its original packaging.
Return procedure for ADPL20502AANT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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