My Inquiry
My Account
Analog Devices Inc. ADPL54203ES8E#TRPBF
- Part No.:
- ADPL54203ES8E#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
ADPL54203ES8E#TRPBF.pdf
- Description:
- IC REG FLYBACK ADJ 3.4A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,982
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADPL54203ES8E#TRPBF from Analog Devices is a monolithic micropower isolated flyback converter IC with integrated 60V/3.4A DMOS switch, operating from 3.2V to 40V input and delivering up to 17W isolated output power. It eliminates opto-isolators and third-winding feedback via primary-side flyback waveform sampling, supports quasi-resonant boundary mode at heavy load and low-ripple Burst Mode® at light load, and targets auxiliary/housekeeping power in industrial and medical systems.
For engineers reviewing the ADPL54203ES8E#TRPBF datasheet, ADPL54203ES8E#TRPBF pinout, ADPL54203ES8E#TRPBF application, or ADPL54203ES8E#TRPBF equivalent, key selection considerations include its no-opto regulation architecture, 115µA sleep-mode quiescent current, 8-lead SOIC thermally enhanced package, and temperature-compensated output voltage programming using RFB/RREF/RTC resistors.
Technical Context
The ADPL54203ES8E#TRPBF implements current-mode control with a novel flyback pulse sense circuit and sample-and-hold error amplifier that samples the reflected output voltage on the SW pin when secondary current reaches zero-enabling precise regulation without isolation components. Its boundary mode detector and internal oscillator enforce quasi-resonant operation at heavy loads and clamp maximum switching frequency to <380kHz under light loads.
It integrates all high-voltage circuitry-including 60V-rated SW pin, 3.4A DMOS switch with 100mΩ RDS(ON), internal 3V LDO (INTVCC), accurate 1.00V RREF reference, and PTAT TC pin (1V at 25°C, 3.35mV/°K)-into a single 8-lead SOIC package with exposed thermal pad. Control logic includes programmable EN/UVLO (1.214V enable threshold, 14mV hysteresis) and built-in soft-start (11ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.2V to 40V - supports wide-input industrial and automotive auxiliary rails without external pre-regulation. |
| Switch Rating | 60V drain-source, 3.4A peak current - enables 17W isolated output with margin for flyback voltage spikes. |
| Quiescent Current | 115µA in sleep mode - minimizes no-load power loss in always-on housekeeping supplies. |
| RREF Voltage | 1.00V ±3% - provides stable reference for output voltage setting via resistor divider (RFB/RREF). |
| TC Pin Output | 1V at 25°C, +3.35mV/°K - enables direct compensation of output diode forward-voltage drift (–1 to –2mV/°C). |
| Minimum Switch-On Time | 160ns - ensures leading-edge blanking for reliable current sensing and prevents false triggering. |
| EN/UVLO Threshold | 1.214V enable, 0.75V shutdown - allows precise input undervoltage lockout programming with resistor divider. |
Pinout & Package
ADPL54203ES8E#TRPBF is housed in a thermally enhanced 8-lead SOIC package (SO-8EP) with exposed GND pad (Pin 9) soldered to PCB ground plane for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN/UVLO | Enable and input UVLO input | Accepts resistor divider from VIN to set accurate 1.214V enable threshold with 14mV hysteresis; pull below 0.3V to shut down. |
| 2 - INTVCC | Internal 3V LDO output | Powers internal control circuitry and gate driver; requires ≥1µF ceramic bypass to GND; must not be externally driven. |
| 3 - VIN | Main input supply | Supplies power to internal circuitry and serves as reference for RFB feedback path; requires local bulk and ceramic bypassing. |
| 4 & 9 - GND | Power and signal ground | Pin 4 is signal GND; exposed Pad 9 is thermal/electrical GND - both must connect to low-impedance PCB ground plane. |
| 5 - SW | Drain of internal DMOS switch | Connects to transformer primary; high dv/dt node - minimize trace area to reduce EMI and voltage overshoot. |
| 6 - RFB | Feedback input from SW node | Samples reflected flyback voltage; connects via resistor to SW pin - determines output voltage with RREF and turns ratio. |
| 7 - RREF | Reference resistor connection | Ground-referenced node for RREF (typically 10kΩ); sets gain for RFB-based output regulation; accepts optional RTC for temp compensation. |
| 8 - TC | Temperature compensation output | PTAT voltage source (1V @ 25°C, +3.35mV/°K); connects to RREF via RTC to cancel diode VF drift across temperature. |
Key Features
| Feature | Design Value |
|---|---|
| No-opto isolated regulation | Eliminates opto-isolator and third winding by sampling flyback pulse on SW pin at zero secondary current - reduces BOM count, cost, and aging-related drift. |
| Low-ripple Burst Mode® | Maintains <15mVPP output ripple at light loads while achieving >75% efficiency at 10mA - ideal for standby and low-power monitoring circuits. |
| Thermally enhanced SOIC-8EP | Exposed GND pad lowers θJA to ~45°C/W - enables 17W output in compact footprint without heatsink under natural convection. |
| Programmable output voltage | Set via two external resistors (RFB/RREF); optional third resistor (RTC) between TC and RREF enables ±0.5% output stability over –40°C to +125°C. |
| Integrated protection suite | Includes output short-circuit protection, overtemperature shutdown (>150°C), minimum load detection (<0.5% full scale), and robust EN/UVLO hysteresis. |
Applications
| Industrial PLC Auxiliary Supply | Medical Isolated Sensor Bias |
|---|---|
Use Scenario: Providing isolated 5V/2A auxiliary power for I/O modules and communication interfaces in programmable logic controllers with 24V DC field bus input. IC Role / Device Role / Timing Role: Primary-side flyback controller regulating isolated output without optocoupler; samples SW node during boundary conduction to maintain ±1.5% load regulation across 10mA–2A. Use Value: Reduces component count by 4 parts vs. opto-based solution, improves long-term reliability by eliminating LED aging, and meets IEC 61000-4-5 surge immunity via inherent transformer isolation. | Use Scenario: Generating isolated 3.3V/500mA bias for analog front-end sensors and ADCs in patient-connected diagnostic equipment requiring reinforced isolation per IEC 60601-1. IC Role / Device Role / Timing Role: Micropower flyback controller operating in Burst Mode® at standby; delivers stable output with <0.5% line/load regulation and <±2mV/°C drift via TC-pin compensation. Use Value: Enables <100µA system standby current, satisfies creepage/clearance requirements via certified transformer, and avoids opto-isolator CMTI limitations in high-noise ECG/EEG environments. |
| Smart Meter Housekeeping Rail | Isolated CAN Transceiver Power |
Use Scenario: Delivering isolated 5V/300mA auxiliary power for metrology ASICs, real-time clocks, and secure elements in utility smart meters with 12–40V DC input range. IC Role / Device Role / Timing Role: Input-wide flyback controller supporting 3.2–40V operation; uses EN/UVLO hysteresis to prevent brownout oscillation during battery backup transitions. Use Value: Ensures continuous RTC and security module operation during main supply dips; achieves >85% efficiency at full load and <120µA no-load draw for extended battery life. | Use Scenario: Supplying isolated 5V/200mA power to CAN FD transceivers in automotive body control modules where 12V battery input varies from 5.5V (cold crank) to 16V (load dump). IC Role / Device Role / Timing Role: High-voltage flyback controller with 60V SW rating tolerating 40V transient spikes; regulates output using boundary mode for tight cross-regulation across multiple isolated rails. Use Value: Replaces discrete MOSFET+controller solutions, withstands ISO 7637-2 Pulse 5a, and maintains CAN bus uptime during engine start-stop cycles without reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated flyback controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28911DR | Requires opto-isolator for regulation; 700V integrated MOSFET; no TC pin or temperature compensation. | Targeted at higher-input AC/DC adapters (85–265VAC); lacks primary-side sensing for low-VIN flyback. | Choose UCC28911DR only for universal-input offline applications where opto-isolation is acceptable and input exceeds 70V. |
| LT3748EMSE#TRPBF | Also no-opto, but uses different sampling method; 100V/3.5A switch; requires external compensation network. | Supports higher output power (up to 25W); larger 16-lead MSOP package with more layout constraints. | Choose LT3748EMSE#TRPBF when >17W output or tighter EMI compliance (spread-spectrum option) is required, accepting added design complexity. |
Compared with UCC28911DR and LT3748EMSE#TRPBF, ADPL54203ES8E#TRPBF uniquely combines 3.2–40V input support, integrated temperature compensation, and ultra-low 115µA sleep current in an 8-lead SOIC - making it optimal for low-input, space-constrained, and thermally sensitive isolated auxiliary supplies.
Availability
ADPL54203ES8E#TRPBF is available at Aetrix Electronics and suitable for industrial PLC auxiliary supplies, medical sensor bias rails, smart meter housekeeping power, and isolated CAN transceiver power requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for ADPL54203ES8E#TRPBF 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 precision instrumentation, industrial automation, healthcare, and communications markets.
The ADPL54203ES8E#TRPBF belongs to Analog Devices' isolated power controller product line, designed specifically to simplify and miniaturize isolated auxiliary power supplies in safety-critical and space-constrained applications without compromising regulation accuracy or reliability.
FAQ
What is the maximum output power achievable with ADPL54203ES8E#TRPBF?
The ADPL54203ES8E#TRPBF delivers up to 17W of isolated output power under typical conditions (e.g., 12VIN/5VOUT, 2.9A load). This limit arises from its 3.4A/60V internal DMOS switch, thermal design in the SOIC-8EP package, and efficiency profile peaking at ~85% across 10mA–3A loads. Higher outputs require external switching or parallel configurations not supported by ADPL54203ES8E#TRPBF.
Does ADPL54203ES8E#TRPBF require an opto-isolator or third-winding transformer?
No, ADPL54203ES8E#TRPBF does not require an opto-isolator or third-winding transformer. It achieves precise output regulation by sampling the reflected flyback voltage directly on the SW pin during zero-secondary-current intervals - a proprietary primary-side sensing technique confirmed in the ADPL54203ES8E#TRPBF datasheet Section "Theory of Operation" and Figure 4 block diagram.
How is output voltage programmed on ADPL54203ES8E#TRPBF?
Output voltage on ADPL54203ES8E#TRPBF is programmed using two external resistors: RFB connected between SW and the RFB pin, and RREF connected between RREF and GND. The nominal relationship is VOUT ≈ 1.00V × (RFB/RREF) × (1/NPS) − VF, where NPS is the transformer turns ratio and VF is the output diode forward voltage. An optional RTC resistor between TC and RREF adds temperature compensation.
What is the purpose of the TC pin on ADPL54203ES8E#TRPBF?
The TC pin on ADPL54203ES8E#TRPBF provides a proportional-to-absolute-temperature (PTAT) voltage: 1.00V at 25°C with +3.35mV/°K coefficient. When connected via RTC to RREF, it injects a temperature-dependent current that cancels the negative temperature coefficient of the output diode (–1 to –2mV/°C), enabling ±0.5% output stability over –40°C to +125°C - a capability explicitly verified in ADPL54203ES8E#TRPBF Figure 6 and Section "Output Temperature Compensation".
Can ADPL54203ES8E#TRPBF operate with input voltages below 5V?
Yes, ADPL54203ES8E#TRPBF operates down to 3.2V input, as specified in Table 1 (VIN Voltage Range: 3.2V to 40V). It maintains regulation and Burst Mode® operation even at 3.3V input, enabling use in low-voltage battery-backed systems. The EN/UVLO threshold (1.214V enable, 0.75V shutdown) remains accurate across this range, and INTVCC regulation holds at 3.0V ±1.5% down to minimum VIN.
ADPL54203ES8E#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive, Isolation Capable
- Topology:
- Flyback
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.2V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- 60V (Switch)
- Current - Output:
- 3.4A (Switch)
- Frequency - Switching:
- 12kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP
ADPL54203ES8E#TRPBF FAQ
1.How can I place an order for ADPL54203ES8E#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for ADPL54203ES8E#TRPBF 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 ADPL54203ES8E#TRPBF reliable?
The price and inventory of ADPL54203ES8E#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADPL54203ES8E#TRPBF is usually 5 days.
3.What payment methods are accepted for ADPL54203ES8E#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADPL54203ES8E#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADPL54203ES8E#TRPBF?
ADPL54203ES8E#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADPL54203ES8E#TRPBF 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 ADPL54203ES8E#TRPBF?
For technical support, including ADPL54203ES8E#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADPL54203ES8E#TRPBF requirements.
6.How does Aetrix verify that ADPL54203ES8E#TRPBF is sourced from the original manufacturer or authorized distributors?
All ADPL54203ES8E#TRPBF 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 ADPL54203ES8E#TRPBF meets industry standards.
7.What is the process for return or replacement of ADPL54203ES8E#TRPBF?
All ADPL54203ES8E#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with ADPL54203ES8E#TRPBF, 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 ADPL54203ES8E#TRPBF part is unused and in its original packaging.
Return procedure for ADPL54203ES8E#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADPL54203ES8E#TRPBF 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…
