My Inquiry
My Account
Analog Devices Inc./Maxim Integrated ADPL20502AATA+T
- Part No.:
- ADPL20502AATA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ADPL20502AATA+T.pdf
- Description:
- IC REG BOOST PROG 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,865
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADPL20502AATA+T from Analog Devices is a synchronous boost DC-DC converter delivering up to 2A peak inductor current, operating from 600mV to 5.5V input and supporting 2.3V–5.5V adjustable output voltage with True Shutdown™, 1nA shutdown current, and 96% peak efficiency. It serves as the primary power rail generator in ultra-low-power battery systems such as wearable audio and IoT sensors.
For engineers reviewing the ADPL20502AATA+T datasheet, ADPL20502AATA+T pinout, ADPL20502AATA+T application, or ADPL20502AATA+T equivalent, key selection criteria include its 500nA output-referred quiescent current, single-resistor output programming (RSEL), cycle-by-cycle current limiting, and guaranteed operation across –40°C to +125°C with no reverse current into precharged outputs.
Technical Context
The ADPL20502AATA+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 - enabling 90% efficiency at 500μA and stable regulation down to 10μA. Its internal error amplifier regulates output voltage with ±1.2% DC load/line regulation and supports startup from as low as 900mV input.
True Shutdown™ disconnects OUT from IN via proprietary synchronous rectifier control, eliminating body-diode leakage and enabling zero forward/reverse current during disable - critical for systems requiring dynamic power cycling into precharged capacitors. Short-circuit protection limits input current to 1.1A and triggers thermal shutdown at 165°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 600mV–5.5V; enables direct operation from single-cell Li-ion, NiMH, or coin cells without pre-regulation. |
| Output Voltage Range | 2.3V–5.5V in 100mV steps; programmed by single resistor (RSEL) - reduces BOM count and PCB footprint vs. dual-resistor feedback. |
| Peak Inductor Current Limit | 2.0A typical; provides robust overcurrent protection while maintaining high output current capability at low VIN (e.g., 800mA @ 5.0V out with 3.0V in). |
| Quiescent Current (OUT) | 500nA typical; measured output-referred, enabling >1-year battery life in always-on sensor nodes drawing microamps. |
| Shutdown Current | 1nA typical; ensures negligible battery drain during system sleep, even with biased output loads. |
| Efficiency | 96% peak, ≥90% at 500μA; sustains high conversion efficiency across 7-decade load range due to adaptive PFM architecture. |
| Operating Temperature | –40°C to +125°C; qualified for industrial and medical environments where thermal margin is critical. |
Pinout & Package
ADPL20502AATA+T is housed in an 8-pin, 2mm × 2mm TDFN package with exposed pad (EP), optimized for thermal performance and compact layout. The EP must be connected to AGND/GND externally via short traces under the device.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input Power Supply | Accepts 600mV–5.5V; requires 22μF X7R ceramic capacitor to ground for low-impedance decoupling and ripple suppression. |
| OUT | Regulated Output | Delivers programmable 2.3V–5.5V; connects directly to 22μF output capacitor - placement must be adjacent to IC to minimize loop inductance. |
| LX | Switching Node | Drives external 1.0μH inductor; high di/dt node requiring minimal trace area and separation from sensitive analog paths. |
| GND | Power Ground | Main return path for high-current switching; tied to EP and AGND at single point to avoid ground bounce. |
| AGND | Analog Ground | Reference for internal error amplifier and RSEL detection; must connect to EP externally - not internally routed. |
| RSEL | Voltage Select Input | Single-resistor interface (0Ω–909kΩ) sets output voltage; total pin capacitance must stay <2pF to ensure accurate startup detection. |
| EN | Enable Control | Logic-level input (VEN_IH = 0.6V min); asserts True Shutdown when pulled below 0.55V - disables all switching and isolates OUT from IN. |
| EP | Exposed Thermal Pad | Internally connected to AGND; mandatory PCB connection to GND plane via multiple vias for thermal dissipation and noise reduction. |
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 applications. |
| Adaptive PFM Control | Three-mode operation (ULPM/LPM/HPM) automatically optimizes switching frequency and on-time to sustain ≥90% efficiency from 10μA to full load. |
| Single-Resistor Output Programming | 32 discrete output voltages (2.3V–5.5V) set via one standard 1% resistor - simplifies inventory and enables flexible design reuse. |
| Output Disconnect Protection | Prevents reverse current flow into precharged output capacitors - enables safe hot-plug and fast wake-up from deep sleep states. |
| Integrated Short-Circuit & Thermal Protection | 1.1A input current limit and 165°C thermal shutdown with 15°C hysteresis - protects against fault conditions without external circuitry. |
Applications
| Wearable Audio Systems | IoT Sensor Nodes |
|---|---|
|
Use Scenario: Powering Bluetooth LE audio codecs and MEMS microphones in earbuds with coin-cell batteries. IC Role / Device Role / Timing Role: Primary step-up regulator generating stable 3.3V rail from 1.1–1.5V depleted battery. Use Value: 500nA quiescent current extends battery runtime beyond 30 days in standby; True Shutdown prevents discharge during case-open events. |
Use Scenario: Supplying 3.0V to ultra-low-power environmental sensors (temperature/humidity) in wireless mesh networks. IC Role / Device Role / Timing Role: Always-on power source enabling sub-10μA system sleep current and rapid wake-up from motion-triggered interrupts. Use Value: 90% efficiency at 500μA load ensures minimal energy loss during periodic 10ms measurement bursts; RSEL simplifies firmware-agnostic voltage scaling. |
| Emergency Lighting Controls | Clinical Instrumentation |
|
Use Scenario: Driving white LEDs from backup supercapacitors in industrial emergency exit signs with 10-year service life. IC Role / Device Role / Timing Role: Boost converter maintaining regulated 5.0V output as supercapacitor voltage decays from 5.5V to 0.9V. Use Value: 600mV minimum input allows full energy extraction from storage; thermal shutdown prevents LED driver failure during sustained high-brightness operation. |
Use Scenario: Powering precision ADCs and low-noise op-amps in portable ECG monitors powered by rechargeable Li-ion cells. IC Role / Device Role / Timing Role: Clean, low-noise 2.5V reference rail generator isolated from noisy digital subsystems via True Shutdown sequencing. Use Value: 1nA shutdown current preserves battery charge during transport mode; 85.3°C/W θJA enables reliable operation inside sealed enclosures at 60°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61291DRVR | Higher 1.2μA IQ (vs. 500nA), fixed 3.3V/5.0V options only, no RSEL programming, 1.5A peak current limit. | Limited to fixed-output designs; lacks true output disconnect - requires external load switch for zero-leakage shutdown. | Choose when fixed voltage suffices and board space permits larger solution size; avoid for dynamically reconfigurable systems. |
| MAX20472ATPA+ | 2.5V–5.5V input, 500nA IQ, but only 1.2A peak current limit and no ULPM mode below 100μA. | Lower output current capability restricts use in high-pulse-load applications like RF transceivers; no precharged-capacitor startup support. | Select for cost-sensitive industrial sensors where 1.2A peak suffices and thermal margin exceeds 125°C ambient. |
Compared with TPS61291DRVR and MAX20472ATPA+, ADPL20502AATA+T uniquely combines 500nA IQ, 2A peak current, single-resistor programmability, and True Shutdown - making it optimal for space-constrained, long-life battery systems requiring flexible voltage rails and zero-leakage disable.
Availability
ADPL20502AATA+T is available at Aetrix Electronics and suitable for wearable audio systems, IoT sensor nodes, emergency lighting controls, and clinical instrumentation requiring stable component supply, extended temperature operation, and ultra-low-power performance.
Supply support for ADPL20502AATA+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, serving industrial, automotive, communications, and healthcare markets.
The ADPL20502 product line delivers ultra-low-quiescent-current boost converters for battery-powered edge devices - designed specifically to maximize runtime in applications where every nanoamp counts and reliability across extreme temperatures is non-negotiable.
FAQ
What is the minimum input voltage required for ADPL20502AATA+T to start up?
The ADPL20502AATA+T starts up from a minimum input voltage of 900mV under typical conditions (RL ≥ 3kΩ, TJ = +25°C). Once running, it continues regulation down to 600mV input. Startup behavior depends on load resistance and output capacitor precharge state - lighter loads enable reliable startup closer to the 900mV threshold.
How does the RSEL pin configure output voltage on ADPL20502AATA+T?
The ADPL20502AATA+T uses a single resistor from RSEL to GND to select one of 32 output voltages between 2.3V and 5.5V in 100mV steps. For example, a 191kΩ resistor sets VOUT = 3.3V. During startup, the IC sources ~200μA for ~600μs to read RSEL; total pin capacitance must remain below 2pF for accuracy.
Does ADPL20502AATA+T support true output disconnect during shutdown?
Yes. ADPL20502AATA+T features True Shutdown™, which actively disconnects the output from the input using internal synchronous rectifier control - preventing both forward conduction through the body diode and reverse current from a precharged output capacitor. This results in only 1nA shutdown current from VIN.
What is the maximum achievable output current from ADPL20502AATA+T at 5.0V output?
At VOUT = 5.0V and VIN = 3.0V, the ADPL20502AATA+T typically delivers 800mA continuous output current. Peak inductor current is limited to 2.0A, but practical output current depends on input voltage, inductor DCR, PCB thermal design, and ambient temperature - derating applies above +85°C ambient.
Can ADPL20502AATA+T operate efficiently at very light loads, such as 10μA?
Yes. ADPL20502AATA+T achieves ≥90% efficiency at 500μA and maintains usable efficiency down to 10μA via its Ultra-Low-Power Mode (ULPM), where quiescent current is just 500nA output-referred. In ULPM, regulation accuracy is ±2.7% (rising), optimized for minimal energy loss in always-on sensing applications.
ADPL20502AATA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- 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:
- 8-TDFN-EP (2x2)
ADPL20502AATA+T FAQ
1.How can I place an order for ADPL20502AATA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for ADPL20502AATA+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 ADPL20502AATA+T reliable?
The price and inventory of ADPL20502AATA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADPL20502AATA+T is usually 5 days.
3.What payment methods are accepted for ADPL20502AATA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADPL20502AATA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADPL20502AATA+T?
ADPL20502AATA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADPL20502AATA+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 ADPL20502AATA+T?
For technical support, including ADPL20502AATA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADPL20502AATA+T requirements.
6.How does Aetrix verify that ADPL20502AATA+T is sourced from the original manufacturer or authorized distributors?
All ADPL20502AATA+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 ADPL20502AATA+T meets industry standards.
7.What is the process for return or replacement of ADPL20502AATA+T?
All ADPL20502AATA+T units undergo pre-shipment inspection (PSI). If there is an issue with ADPL20502AATA+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 ADPL20502AATA+T part is unused and in its original packaging.
Return procedure for ADPL20502AATA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADPL20502AATA+T Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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…
