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NXP Semiconductors TEA1703TS/N1,115
- Part No.:
- TEA1703TS/N1,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Supply Controllers, Monitors
- Package:
- SC-74, SOT-457
- Datasheet:
-
TEA1703TS/N1,115.pdf
- Description:
- IC CTLR SMPS STANDBY 6TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,049
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Product details
Overview
TEA1703TS/N1,115 from NXP Semiconductors is a low-power standby controller IC for switched-mode power supplies (SMPS), designed to achieve < 0.5 mW no-load standby power in notebook adapters. It integrates a patented switched-mode optocoupler driver, operates from 3.5–30 V supply, draws only 30 μA typical supply current, and features six-pin TSOP6 (SOT457) packaging for compact integration.
For engineers reviewing the TEA1703TS/N1,115 datasheet, TEA1703TS/N1,115 pinout, TEA1703TS/N1,115 application, or TEA1703TS/N1,115 equivalent, key selection criteria include ultra-low ICC(oper) (28–35 μA), precise Vth(VSENSE) (1.17–1.31 V), PSENSE threshold hysteresis (16–34 mV), SWDET activation current (0.8–2 μA), and OPTO on-time (1.2–1.65 μs) for reliable SMPS standby control.
Technical Context
The TEA1703TS/N1,115 implements dual-sensing control: voltage sensing via VSENSE (1.22 V threshold) with −0.94 μA output current above threshold, and power sensing via PSENSE (0.5 V threshold) with 25 mV typical hysteresis. Its internal oscillator runs at 24–33 kHz to drive the OPTO pin with fixed 1.42 μs on-time and 100 Ω RDS(on).
Switching detection on SWDET (1.3 μA typical threshold) prevents unintended latched-protection reset in companion controllers like TEA1753T or TEA1733T. The open-drain OPTO output includes an integrated freewheeling diode to VCC and supports pulse-mode driving to maintain high CTR while minimizing average current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3.5 V to 30 V - supports wide-input auxiliary supplies without external regulation |
| ICC(oper) | 28–35 μA typical - enables sub-0.5 mW system standby power in 20 V adapter applications |
| Vth(VSENSE) | 1.17–1.31 V - sets precise output voltage detection threshold for hysteresis-based restart control |
| Vth(PSENSE) | 0.45–0.55 V - triggers standby entry when converter output power drops below defined load level |
| Ith(det)sw | 0.8–2 μA - ensures reliable switching detection without false triggering from noise or leakage |
| fosc | 24–33 kHz - determines OPTO pulse frequency for efficient, high-CTR optocoupler drive |
| ton(OPTO) | 1.2–1.65 μs - defines narrow pulse width to limit average optocoupler current while sustaining peak drive |
Pinout & Package
TEA1703TS/N1,115 is housed in a plastic surface-mounted TSOP6 package (SOT457), measuring 3.1 mm × 2.7 mm × 1.1 mm with 0.95 mm lead pitch and gull-wing leads for reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Supply input | Accepts 3.5–30 V DC; powers internal circuitry and provides return path for OPTO freewheeling diode |
| GND (Pin 2) | Ground reference | Common return for all analog sensing inputs and digital logic; requires low-impedance PCB connection |
| VSENSE (Pin 3) | Voltage sense input | Detects output voltage via resistive divider; outputs −0.94 μA when >1.22 V to enable hysteresis control |
| SWDET (Pin 4) | Switching detection input | Monitors primary-side activity; must exceed 1.3 μA to permit standby activation and avoid latched-protection reset |
| PSENSE (Pin 5) | Power sense input | Samples switching frequency-derived signal; <0.5 V triggers standby mode; 25 mV hysteresis reduces ripple sensitivity |
| OPTO (Pin 6) | Optocoupler driver output | Open-drain output with integrated VCC-connected diode; driven at 28 kHz with 1.42 μs pulses for high-CTR efficiency |
Key Features
| Feature | Design Value |
|---|---|
| Switched-mode optocoupler driver | Patented NXP circuit enabling >10× optocoupler drive efficiency vs. resistor-limited DC drive |
| Ultra-low operating current | 30 μA typical ICC(oper) directly enables <0.5 mW total standby power in 19 V adapter designs |
| Integrated SWDET protection logic | Prevents accidental reset of latched protections in TEA1753T/TEA1733T during standby transitions |
| 6-pin minimal footprint | TSOP6 (SOT457) package allows placement near optocoupler with minimal board area and routing complexity |
| VSENSE/PSENSE dual-threshold control | Independent 1.22 V voltage and 0.5 V power thresholds enable robust, ripple-immune no-load detection |
Applications
| Notebook Adapter Standby | USB-C PD Auxiliary Supply |
|---|---|
Use Scenario: AC-DC adapter remains powered but delivers zero load during laptop sleep mode. IC Role / Device Role / Timing Role: TEA1703TS/N1,115 monitors VSENSE and PSENSE to detect no-load condition and assert OPTO to disable primary controller. Use Value: Reduces total adapter standby consumption to <0.5 mW, meeting stringent Energy Star and EU CoC Tier 2 requirements. |
Use Scenario: USB-C PD power brick maintains regulated 5/9/15/20 V rails during device disconnect. IC Role / Device Role / Timing Role: TEA1703TS/N1,115 senses falling PSENSE voltage and rising VSENSE hysteresis to initiate controlled shutdown sequence. Use Value: Enables fast restart (<100 ms) after load reappearance by retaining VCC charge and avoiding full soft-start delay. |
| Smart Home Wall Adapter | Industrial IoT Power Module |
Use Scenario: Always-on wall adapter powers Wi-Fi/BLE modules with intermittent sensor polling. IC Role / Device Role / Timing Role: TEA1703TS/N1,115 uses SWDET input to confirm primary-side inactivity before entering deep standby. Use Value: Eliminates false standby entries caused by burst-mode operation, ensuring stable 3.3 V rail for MCU retention. |
Use Scenario: DIN-rail mounted power supply powers PLC I/O modules during factory downtime. IC Role / Device Role / Timing Role: TEA1703TS/N1,115 interfaces with TEA1733T via SWDET and OPTO to coordinate multi-stage standby sequencing. Use Value: Achieves <10 mW system-level standby across redundant 24 V outputs without compromising fault latch integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SMPS standby controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TEA1708TS/N1,115 | Higher VCC(max) = 36 V; adds internal VCC OVP; identical pinout and functional architecture | Required where auxiliary supply exceeds 30 V or OVP coordination with primary controller is needed | Select TEA1708TS/N1,115 when input voltage margin or overvoltage protection integration is critical |
| UCC28704DR | TI part with integrated HV start-up; 20–30 V VDD range; different pin assignment and control algorithm | Used in self-powered flyback designs without auxiliary winding; lacks dedicated SWDET pin | Choose UCC28704DR only when eliminating auxiliary winding is mandatory and SWDET functionality is not required |
Compared with TEA1703TS/N1,115, TEA1708TS/N1,115 extends voltage range and adds OVP, while UCC28704DR eliminates auxiliary winding dependency at the cost of SWDET-based protection coordination - making TEA1703TS/N1,115 optimal for cost-sensitive, externally powered, safety-critical standby control.
Availability
TEA1703TS/N1,115 is available at Aetrix Electronics and suitable for notebook adapters, USB-C PD auxiliary supplies, smart home wall adapters, and industrial IoT power modules requiring stable component supply with guaranteed long-term availability.
Supply support for TEA1703TS/N1,115 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 for automotive, industrial, and consumer applications.
The TEA1703TS/N1,115 belongs to NXP's GreenChip SMPS controller family, engineered specifically to minimize no-load power in AC-DC adapters and meet international energy efficiency regulations.
FAQ
What is the minimum supply voltage required for TEA1703TS/N1,115 to operate reliably?
The TEA1703TS/N1,115 has a specified minimum supply voltage (VCC(min)) of 3.5 V, with typical operation at 4.0 V and maximum of 30 V. Below 3.5 V, internal biasing fails and the OPTO output becomes inactive. In practice, designs using TEA1703TS/N1,115 maintain VCC ≥ 4.2 V via auxiliary winding or startup resistor to ensure robust startup and continuous standby monitoring under varying line conditions.
How does TEA1703TS/N1,115 prevent accidental reset of latched protections in companion controllers like TEA1753T?
The TEA1703TS/N1,115 incorporates a dedicated SWDET pin that monitors primary-side switching activity. Only when SWDET current exceeds 1.3 μA does the IC permit standby activation. This ensures TEA1703TS/N1,115 never asserts OPTO during active switching - preventing spurious VINSENSE-driven resets of TEA1753T's latched overvoltage or overcurrent protections.
Can TEA1703TS/N1,115 be used without an external optocoupler?
No - TEA1703TS/N1,115 requires an external optocoupler connected to the OPTO pin to communicate with the primary-side controller. Its open-drain OPTO output drives the optocoupler LED in pulsed mode (28 kHz, 1.42 μs on-time); omitting the optocoupler breaks the feedback loop and renders standby control inoperative. The IC does not provide direct PWM or digital interface alternatives.
What is the purpose of the hysteresis on the PSENSE pin, and how is it implemented?
The PSENSE pin features 16–34 mV of internal hysteresis (Vhys(PSENSE)) to reject noise and ripple during low-load operation. When PSENSE voltage falls below 0.5 V, standby activates; it only exits standby once PSENSE rises above 0.5 V + Vhys(PSENSE). This prevents oscillation during marginal load transitions and is implemented entirely within the TEA1703TS/N1,115 - no external components are needed to set hysteresis.
Is TEA1703TS/N1,115 qualified for automotive applications?
No - TEA1703TS/N1,115 is not automotive-qualified. Per NXP's datasheet legal section, it is intended for industrial and consumer power supplies only. It lacks AEC-Q100 qualification, extended temperature grade (-40°C to +125°C), and automotive-specific reliability testing. For automotive infotainment or body electronics, designers must select NXP's automotive-grade GreenChip variants or alternative qualified controllers.
TEA1703TS/N1,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- GreenChip™
- Package/Case:
- SC-74, SOT-457
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Applications:
- Secondary-Side Controller
- Voltage - Input:
- 5V ~ 30V
- Voltage - Supply:
- 5V ~ 30V
- Current - Supply:
- 30 µA
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-74
TEA1703TS/N1,115 FAQ
1.How can I place an order for TEA1703TS/N1,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for TEA1703TS/N1,115 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 TEA1703TS/N1,115 reliable?
The price and inventory of TEA1703TS/N1,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TEA1703TS/N1,115 is usually 5 days.
3.What payment methods are accepted for TEA1703TS/N1,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TEA1703TS/N1,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TEA1703TS/N1,115?
TEA1703TS/N1,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TEA1703TS/N1,115 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 TEA1703TS/N1,115?
For technical support, including TEA1703TS/N1,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TEA1703TS/N1,115 requirements.
6.How does Aetrix verify that TEA1703TS/N1,115 is sourced from the original manufacturer or authorized distributors?
All TEA1703TS/N1,115 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 TEA1703TS/N1,115 meets industry standards.
7.What is the process for return or replacement of TEA1703TS/N1,115?
All TEA1703TS/N1,115 units undergo pre-shipment inspection (PSI). If there is an issue with TEA1703TS/N1,115, 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 TEA1703TS/N1,115 part is unused and in its original packaging.
Return procedure for TEA1703TS/N1,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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