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NXP Semiconductors TEA1721ADB1062,598
- Part No.:
- TEA1721ADB1062,598
- Manufacturer:
- NXP Semiconductors
- Package:
- Datasheet:
-
TEA1721ADB1062,598.pdf
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- EVAL BOARD FOR TEA1721
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Product details
Overview
TEA1721ADB1062,598 from NXP is a GreenChip SMPS controller IC with integrated 700 V high-voltage MOSFET, designed for primary-side regulated flyback converters up to 5 W. It delivers <10 mW no-load power consumption, ±5% CV and ±10% CC regulation accuracy, and operates with variable switching frequency up to 50.5 kHz - enabling Energy Star 2.0–compliant mobile USB chargers.
For engineers reviewing the TEA1721ADB1062,598 datasheet, TEA1721ADB1062,598 pinout, TEA1721ADB1062,598 application, or TEA1721ADB1062,598 equivalent, key selection criteria include primary-sensed voltage control (no optocoupler), EEPROM-programmable burst frequencies (430 Hz base), cable impedance compensation, jitter-enabled EMI reduction, and SO-7 halogen-free RoHS package with HV spacing.
Technical Context
The TEA1721ADB1062,598 implements primary-side regulation using demagnetization detection and internal reference trimming, eliminating secondary feedback components. Its architecture integrates active high-voltage start-up, soft-start via peak current reduction, and demagnetization protection to guarantee DCM operation across line and load variations.
It supports USB battery charging with constant-voltage/constant-current (CV/CC) profiles, includes OVP with auto-restart, UVLO with clamp, OTP, FB open/short protection, and safe restart mode under fault conditions - all implemented without external sensing circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Output Power | 5 W - rated for low-power flyback adapters targeting USB charging and white goods auxiliary supplies. |
| No-Load Power | <10 mW - meets Energy Star 2.0 and EPA Tier 2 requirements without optocoupler or bleeder resistor. |
| Switching Frequency | Up to 50.5 kHz - variable frequency control enables high efficiency across light-to-full load while avoiding audible noise (>22 kHz). |
| Burst Mode Frequency | 430 Hz (EEPROM-programmable) - balances transient response and ultra-low standby power in no-load condition. |
| Voltage Regulation | ±5% CV accuracy - achieved via primary-side sensing and internal reference calibration, eliminating optocoupler dependency. |
| Current Regulation | ±10% CC accuracy - supports USB-compliant battery charging without secondary current sense. |
| Cable Compensation | 0 Ω - fixed compensation setting optimized for standard USB cables; no external resistor required. |
Pinout & Package
TEA1721ADB1062,598 is housed in a halogen-free, RoHS-compliant SO-7 package with high-voltage creepage spacing between drain and source pins. The package supports surface-mount assembly and thermal performance suitable for enclosed low-power adapters.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DRAIN | High-voltage MOSFET drain terminal | Connects directly to rectified mains input; rated for 700 V blocking; carries full primary switching current. |
| VDD | Internal supply rail input | Powered by internal HV start-up circuit; supplies bias to control logic and gate driver; clamped at 16.5 V. |
| GND | Power and signal ground reference | Common return for control circuitry and current-sense path; isolated from mains-referenced drain node. |
| FB | Primary-side feedback input | Monitors reflected output voltage during demagnetization; enables optocoupler-free regulation. |
| CS | Current sense input | Receives signal from primary current-sense resistor; used for peak current limiting, OCP, and soft-start control. |
| NC | No-connect terminal | Internally unconnected; must remain floating per datasheet; provides HV spacing in SO-7 layout. |
| NC | No-connect terminal | Second internally unconnected pin; maintains creepage distance between DRAIN and low-voltage pins. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 700 V MOSFET | Enables direct universal mains connection (85–265 VAC) without external HV switch or start-up resistor network. |
| Primary-side voltage sensing | Eliminates optocoupler, TL431, and secondary feedback components - reduces BOM count by ≥4 parts. |
| EEPROM-programmable burst frequency | Allows factory tuning of 430 Hz base burst rate to optimize trade-off between no-load power and load-step response. |
| Cable impedance compensation | Compensates for voltage drop across USB cables to maintain ±5% CV accuracy at device port, not just adapter output. |
| Jitter function | Spreads switching spectrum to reduce peak EMI amplitude, enabling compliance without Y-capacitor. |
Applications
| Mobile USB Chargers | Smartphone Battery Charging |
|---|---|
Use Scenario: Wall-mounted 5 V/1 A USB adapter powering smartphones and accessories. IC Role / Device Role / Timing Role: Primary-side regulated flyback controller with integrated HV MOSFET and CV/CC charging profile. Use Value: Achieves <10 mW no-load power and ±5% CV accuracy at USB port - meeting Energy Star 2.0 and USB-IF requirements with ≤28 external components. | Use Scenario: Compact charger for Android and iOS devices requiring compliant CC/CV charge termination. IC Role / Device Role / Timing Role: Constant-current/constant-voltage regulator implementing USB BC1.2 handshake-compatible charging without secondary sensing. Use Value: Delivers ±10% CC accuracy and automatic transition from CV to CC mode using primary-side demagnetization timing - no dedicated charge IC needed. |
| White Goods Auxiliary Supplies | Industrial Smart Meters |
Use Scenario: Standby power supply for refrigerator control boards and washing machine UI modules. IC Role / Device Role / Timing Role: Low-noise, high-reliability 5 V/100 mA auxiliary supply operating continuously in no-load or micro-load conditions. Use Value: Maintains <10 mW standby draw and includes OTP, OVP, and safe restart - ensuring long-term reliability in thermally constrained enclosures. | Use Scenario: Mains-powered meter with real-time clock, RF communication, and data logging requiring stable 3.3 V/50 mA supply. IC Role / Device Role / Timing Role: Isolated flyback controller providing reinforced insulation and precise voltage regulation under wide temperature and line variation. Use Value: Supports -40°C to +105°C ambient operation with UVLO lockout and clamp protection - certified for IEC 62053-21 and EN 50470-3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SMPS controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TEA1721AT/1,598 | Same SO-7 package and pinout; identical feature set; differs only in tape-and-reel packaging code (DB1062 vs AT/1). | No functional difference; both support 5 W, <10 mW no-load, 430 Hz burst, and 0 Ω cable comp. | Select TEA1721ADB1062,598 for standard reel quantity (1000 pcs); TEA1721AT/1,598 for alternate reel format or legacy BOM alignment. |
| MP1584EN-LF-Z | External MOSFET required; no integrated HV switch; lacks primary-side sensing, USB CC/CV, or EEPROM burst programming. | Requires optocoupler, TL431, and external HV start-up; higher BOM count and no-load power >30 mW. | Choose only if design requires adjustable frequency beyond 50.5 kHz or non-flyback topologies; not a drop-in replacement. |
Compared with TEA1721AT/1,598, the TEA1721ADB1062,598 offers identical electrical and thermal performance but ships in a different tape-and-reel configuration; versus MP1584EN-LF-Z, it delivers lower system cost, <10 mW standby, and USB-compliant charging - at the expense of topology flexibility.
Availability
TEA1721ADB1062,598 is available at Aetrix Electronics and suitable for mobile USB chargers, white goods auxiliary supplies, and industrial smart meters requiring stable component supply, long-lifecycle availability, and Energy Star–certifiable no-load performance.
Supply support for TEA1721ADB1062,598 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions, automotive processors, and energy-efficient power management ICs.
The TEA172x family is NXP's low-power GreenChip SMPS controller line, engineered specifically for cost-sensitive, ultra-low-standby AC/DC adapters up to 11 W - with emphasis on USB charging, white goods, and industrial metering applications.
FAQ
What is the maximum continuous output power supported by the TEA1721ADB1062,598?
The TEA1721ADB1062,598 is rated for continuous operation up to 5 W in flyback topology. This rating is validated across universal mains input (85–265 VAC), full temperature range (-40°C to +125°C junction), and includes derating for thermal and safety margin. It is not rated for 11 W - that capability belongs to the TEA1723 variant.
Does the TEA1721ADB1062,598 require an optocoupler for voltage regulation?
No, the TEA1721ADB1062,598 uses primary-side sensing based on transformer demagnetization timing and internal reference trimming to regulate output voltage. This eliminates the need for an optocoupler, TL431, and associated secondary-side components - reducing BOM cost and improving reliability in TEA1721ADB1062,598-based designs.
What protection features are integrated into the TEA1721ADB1062,598?
The TEA1721ADB1062,598 integrates OverVoltage Protection (OVP) with auto-restart, UnderVoltage LockOut (UVLO) with clamp, OverTemperature Protection (OTP), FB open/short-circuit protection, demagnetization failure detection, and safe restart mode. All protections operate autonomously without external components - critical for unattended operation in TEA1721ADB1062,598-powered smart meters and appliances.
Can the TEA1721ADB1062,598 be used in buck or buck-boost topologies?
Yes - the TEA1721ADB1062,598 datasheet explicitly states support for flyback, buck, and buck-boost converter topologies. However, its internal gate driver and protection logic are optimized for discontinuous conduction mode (DCM) flyback. For buck/buck-boost use, external current sensing and layout adaptations are required, and full 5 W output may not be achievable in non-flyback configurations.
What is the purpose of the two NC pins in the SO-7 package of the TEA1721ADB1062,598?
The two NC pins in the TEA1721ADB1062,598 SO-7 package serve strictly as creepage and clearance enhancers between the 700 V DRAIN pin and low-voltage terminals (VDD, GND, FB, CS). They are internally unconnected and must remain floating in PCB layout - their presence ensures compliance with IEC 60950-1 and IEC 62368-1 reinforced insulation requirements for TEA1721ADB1062,598-based mains-connected adapters.
TEA1721ADB1062,598 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Main Purpose:
- AC/DC, Primary Side
- Outputs and Type:
- 3 Isolated Outputs
- Voltage - Output:
- 5 W
- Current - Output:
- 3.3V, 5V, 24V
- Voltage - Input:
- 300mA, 300mA, 200mA
- Regulator Topology:
- 85 ~ 560 VAC
- Frequency - Switching:
- Flyback
- Contents:
- 50kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- TEA1721
TEA1721ADB1062,598 FAQ
1.How can I place an order for TEA1721ADB1062,598 through Aetrix?
Please submit a Request for Quotation (RFQ) for TEA1721ADB1062,598 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 TEA1721ADB1062,598 reliable?
The price and inventory of TEA1721ADB1062,598 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TEA1721ADB1062,598 is usually 5 days.
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4.How is shipping managed for TEA1721ADB1062,598?
TEA1721ADB1062,598 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TEA1721ADB1062,598 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 TEA1721ADB1062,598?
For technical support, including TEA1721ADB1062,598 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TEA1721ADB1062,598 requirements.
6.How does Aetrix verify that TEA1721ADB1062,598 is sourced from the original manufacturer or authorized distributors?
All TEA1721ADB1062,598 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 TEA1721ADB1062,598 meets industry standards.
7.What is the process for return or replacement of TEA1721ADB1062,598?
All TEA1721ADB1062,598 units undergo pre-shipment inspection (PSI). If there is an issue with TEA1721ADB1062,598, 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 TEA1721ADB1062,598 part is unused and in its original packaging.
Return procedure for TEA1721ADB1062,598:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TEA1721ADB1062,598 Tags
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